0001628280-26-007117 | 10-K | XBRL Viewer

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Pension and Postretirement Health and Life Benefits (Schedule of Healthcare Cost Trend Rates) (Details)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Defined Benefit Plan, Assumed Health Care Cost Trend Rates [Abstract]
Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Next Fiscal Year	9.00%	7.00%
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate	5.00%	5.00%
Defined Benefit Plan, Year Health Care Cost Trend Rate Reaches Ultimate Trend Rate	2034	2033

Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2025

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets [Table Text Block]

Intangible asset balances are as follows (in millions):


	December 31, 2025						December 31, 2024
	Gross Carrying Amount		Accumulated Amortization		Net Amount		Gross Carrying Amount		Accumulated Amortization		Net Amount
Backlog	$	54.6	$	50.6	$	4.0	$	54.6	$	46.8	$	7.8
Customer relationships	68.9		51.7		17.2		68.9		47.1		21.8
Total	$	123.5	$	102.3	$	21.2	$	123.5	$	93.9	$	29.6

Finite-lived Intangible Assets Amortization Expense [Table Text Block]

The amount of amortization expense for intangible assets in each of the succeeding years is estimated to be as follows (in millions):


2026	$	6.1
2027	5.8
2028	5.9
2029	3.4
2030	—
Thereafter	—
Total	$	21.2

Accounts Payable and Accrued Liabilities

12 Months Ended

Dec. 31, 2025

Accounts Payable and Accrued Liabilities [Abstract]

Accounts Payable and Accrued Liabilities [Text Block]

ACCOUNTS PAYABLE AND ACCRUED LIABILITIES

Components of accounts payable and accrued liabilities follow (in millions):


	December 31,
	2025		2024

Trade payables	$	10.0	$	5.8
Compensation and employee benefits	16.6		19.9
Postretirement health and life benefit obligations - current	9.2		9.5


Accrued interest on 2.25% Convertible Notes	1.5		1.3
Operating lease liability	1.5		1.4
Other accrued liabilities	2.8		0.9
Total accounts payable and accrued liabilities	$	41.6	$	38.8

Pension and Postretirement Health and Life Benefits (Narrative) (Details) $ in Millions	3 Months Ended	9 Months Ended		12 Months Ended
	Dec. 31, 2023 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Sep. 30, 2024 USD ($)	May 28, 2024 USD ($)	Oct. 12, 2023 USD ($)	Dec. 31, 2022 USD ($)
Defined Contribution Plan, Cost				$ 3.1	$ 2.6	$ 2.3
Defined Benefit Plan, Actuarial (Gain) Loss From Remeasurement				$ (2.9)	17.3	24.6
Portion of Defined Benefit Plan, Benefit Obligation related to Remeasurement										$ 30.6
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment		$ 16.8	$ 0.9
Defined Benefit Plan, Pension Plan Obligation Transferred								$ 234.0	$ 186.5
Defined Benefit Plan, Pension Plan Assets Transferred							$ 15.4	$ 224.0	$ 171.4
Income (Loss) Related to Pension Settlement	$ 28.6
Pension Plan, Defined Benefit [Member]
Approximate Number of Plan Participants				300
Defined Benefit Plan, Actuarial (Gain) Loss From Remeasurement				$ 0.9	(21.9)
Defined Benefit Plan, Benefit Obligation	308.2			31.0	30.6	308.2				$ 527.3
Pension Plan, Defined Benefit [Member] \| Qualified Plan [Member]
Expected defined benefit plan contributions for next fiscal year for qualified plans				0.0
Pension Plan, Defined Benefit [Member] \| Nonqualified Plan [Member]
Expected defined benefit plan contributions for next fiscal year for qualified plans				1.3
Other Postretirement Benefits Plan [Member]
Expected defined benefit plan contributions for next fiscal year for qualified plans				9.2
Defined Benefit Plan, Actuarial (Gain) Loss From Remeasurement				2.5	0.0
Defined Benefit Plan, Benefit Obligation	$ 91.3			$ 81.4	$ 84.1	$ 91.3

Cover Page - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Cover Page - USD ($) $ / shares in Units, $ in Millions	Dec. 31, 2025	Feb. 02, 2026	Jun. 30, 2025	Dec. 31, 2024
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Dec. 31, 2025
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	FY
Entity File Number	1-14287
Entity Registrant Name	Centrus Energy Corp.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	52-2107911
Entity Address, Address Line One	6901 Rockledge Drive, Suite 800
Entity Address, City or Town	Bethesda
Entity Address, State or Province	MD
Entity Address, Postal Zip Code	20817
City Area Code	(301)
Local Phone Number	564-3200
Title of 12(b) Security	Class A Common Stock, par value $0.10 per share
Trading Symbol	LEU
Security Exchange Name	NYSE
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Central Index Key	0001065059
Current Fiscal Year End Date	--12-31
Amendment Flag	false
Entity Current Reporting Status	Yes
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Public Float			$ 3,200.0
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Document Type	10-K
ICFR Auditor Attestation Flag	true
Documents Incorporated by Reference	DOCUMENTS INCORPORATED BY REFERENCE Portions of the definitive proxy statement for the 2026 annual meeting of shareholders to be filed with the Securities and Exchange Commission within 120 days after the end of fiscal year 2025 are incorporated by reference into Part III of this Annual Report on Form 10-K.
Document Financial Statement Error Correction [Flag]	false
Common Class A [Member]
Common Stock, Par or Stated Value Per Share	$ 0.10			$ 0.10
Entity Common Stock, Shares Outstanding		18,945,365
Common Class B [Member]
Common Stock, Par or Stated Value Per Share	$ 0.10			$ 0.10
Entity Common Stock, Shares Outstanding		719,200

Revenue and Contracts with Customers (Contract with Customer Asset and Liability) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Deferred costs associated with deferred revenue	$ 40.9	$ 63.9
Deferred revenue	131.1	183.6
Deferred revenue change	(52.5)
Advances from customers	0.0	$ 32.8
Advances from customers change	$ (32.8)

Fair Value Measurements (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
0% Convertible Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, face amount	$ 805.0
2.25% Convertible Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, face amount	402.5	$ 402.5
Senior Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt, long-term and short-term, combined carrying value	0.0	89.6
Long-term debt, current	0.0	6.1
Long-term debt, fair value	0.0	73.6
Long-term debt, face amount	1,207.5	486.0
Senior Notes [Member] \| 2.25% Convertible Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, face amount	402.5
Convertible Debt \| 0% Convertible Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt, long-term and short-term, combined carrying value	783.7	0.0
Long-term debt, fair value	1,089.8	0.0
Convertible Debt \| 2.25% Convertible Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt, long-term and short-term, combined carrying value	391.2	389.0
Long-term debt, fair value	$ 1,080.4	$ 403.8

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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+ Details

Commitment and Contingencies (Details) - USD ($) $ in Millions	Feb. 09, 2026	Dec. 31, 2025
Loss Contingency, Possible Loss Not Accrued		$ 9.6
Scenario, Forecast [Member] \| Fluor
Loss Contingency, Cancellation Fee Initial Amount	$ 24.0
Loss Contingency, Cancellation Fee, Value Per Month Decrease	2.0
Loss Contingency, Cancellation Fee Ending Amount	$ 0.0

Pension and Postretirement Health and Life Benefits (Plan Asset Allocations) (Details)	Dec. 31, 2026	Dec. 31, 2025	Dec. 31, 2024
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage		100.00%	100.00%
Equity Securities [Member]
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage		19.00%	19.00%
Equity Securities [Member] \| Scenario, Forecast [Member] \| Minimum [Member]
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	10.00%
Equity Securities [Member] \| Scenario, Forecast [Member] \| Maximum [Member]
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	20.00%
Debt Securities [Member]
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage		80.00%	80.00%
Debt Securities [Member] \| Scenario, Forecast [Member] \| Minimum [Member]
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	80.00%
Debt Securities [Member] \| Scenario, Forecast [Member] \| Maximum [Member]
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	90.00%
Cash [Member]
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage		1.00%	1.00%
Cash [Member] \| Scenario, Forecast [Member] \| Minimum [Member]
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	0.00%
Cash [Member] \| Scenario, Forecast [Member] \| Maximum [Member]
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage	5.00%

Revenue and Contracts with Customers (Revenue from External Customers by Geographic Areas) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Revenue	$ 448.7	$ 442.0	$ 320.2
United States
Revenue	335.3	253.4	281.6
Japan
Revenue	102.7	117.2	23.6
Other Foreign
Revenue	10.7	29.0	15.0
Foreign
Revenue	113.4	188.6	38.6
NETHERLANDS
Revenue	0.0	42.4	0.0
Product [Member]
Revenue	346.2	349.9	269.0
Product [Member] \| United States
Revenue	232.8	161.3	230.4
Product [Member] \| Japan
Revenue	102.7	117.2	23.6
Product [Member] \| Other Foreign
Revenue	10.7	29.0	15.0
Product [Member] \| Foreign
Revenue	113.4	188.6	38.6
Product [Member] \| NETHERLANDS
Revenue	$ 0.0	$ 42.4	$ 0.0

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details

Pension and Postretirement Health and Life Benefits (Schedule of Estimated Future Benefit Payments) (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Pension Plan, Defined Benefit [Member]
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months	$ 2.7
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	2.0
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	1.9
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	2.3
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	2.5
Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter	$ 10.9
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months		$ 9.2
Defined Benefit Plan, Expected Future Benefit Payment, Year Two		8.6
Defined Benefit Plan, Expected Future Benefit Payment, Year Three		8.0
Defined Benefit Plan, Expected Future Benefit Payment, Year Four		7.6
Defined Benefit Plan, Expected Future Benefit Payment, Year Five		6.9
Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter		$ 28.9

Compensation Related Costs, Retirement Benefits	12 Months Ended
Compensation Related Costs, Retirement Benefits	Dec. 31, 2025
Retirement Benefits [Abstract]
Compensation and Employee Benefit Plans	SEVERANCE PLAN The Company maintains the Severance Plan which provides severance benefits for covered executives. In addition, the Company also enters into employee agreements with key executives which incorporate severance benefits, including continuation of certain insurance benefits. The benefits payable under the Severance Plan (as well as applicable employment agreements) outline benefits based on salary level, amongst other variables. Accordingly, as the severance expenses are part of an on-going benefit arrangement, the Company recognizes the expense when payment of the severance is probable and can be reasonably estimated in accordance with ASC 712, Compensation — Nonretirement Postemployment Benefits. In December 2023, the Company recorded a severance charge of $3.6 million related to the separation of one executive, which was recorded in Selling, General, and Administrative Expenses in the Consolidated Statements of Operations. The majority of the severance charge was paid out in 2024, excluding the costs for the continuation of insurance benefits. The Company’s severance expenses were $0.8 million, $0.3 million, and $3.6 million for the years ended December 31, 2025, 2024, and 2023, respectively.

Stock-Based Compensation (Options) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2025
Share-Based Payment Arrangement, Noncash Expense [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	0	96	96
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Exercise Price	$ 0	$ 4.37	$ 4.37
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Remaining Contractual Term		3 months 18 days	2 years 2 months 12 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	0	0
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price	$ 0	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	(96)	0
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price	$ 4.37	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value		$ 4.8	$ 2.7
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options				0
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options, Weighted Average Exercise Price				$ 0

Net Income Per Share

12 Months Ended

Dec. 31, 2025

Earnings Per Share [Abstract]

Net Income (Loss) Per Share

NET INCOME PER COMMON SHARE

Basic net income per share is calculated by dividing income allocable to common stockholders by the weighted average number of shares of common stock outstanding during the period. In calculating diluted net income per share, the number of shares is increased by the weighted average number of potential common shares related to stock compensation awards including restricted stock, stock options, stock appreciation rights and notional stock units, and a warrant. For further details, refer to Note 16, Stockholders’ Equity. No dilutive effect is recognized in a period in which a net loss has occurred.

On November 7, 2024, Centrus issued $402.5 million aggregate principal amount 2.25% Convertible Notes due 2030. On August 18, 2025, Centrus issued $805.0 million aggregate principal amount 0% Convertible Notes due 2032. The dilutive impact of both the 2.25% Convertible Notes and 0% Convertible Notes on the calculation of diluted income per share is considered using the if-converted method. However, because the principal amount of the 2.25% Convertible Notes and 0% Convertible Notes must be settled in cash, the dilutive impact of applying the if-converted method is limited to the in-the-money portion, if any, of the 2.25% Convertible Notes and 0% Convertible Notes. For further details, refer to Note 8, Debt.

The weighted average number of common and common equivalent shares and the calculation of basic and diluted income per common share are as follows:


	Year Ended December 31,
	2025		2024		2023
Numerator (in millions):
Net income	$	77.8	$	73.2	$	84.4





Denominator (in thousands):
Average common shares outstanding - basic	17,967		16,309		15,212
Potentially dilutive shares related to equity-compensation awards	58		64		289
Potentially dilutive shares related to 2.25% Convertible Notes	1,900		—		—
Potentially dilutive shares related to 0% Convertible Notes	—		—		—
Average common shares outstanding - diluted	19,925		16,373		15,501

Net income per common share (in dollars):
Basic	$	4.33	$	4.49	$	5.55
Diluted	$	3.90	$	4.47	$	5.44

0% Convertible Notes (if-converted) excluded from the diluted calculation because they would have been antidilutive (in thousands)	951		$	—	$	—

Intangible Assets

12 Months Ended

Dec. 31, 2025

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets

INTANGIBLE ASSETS, NET

Intangible assets originated from the Company’s reorganization and application of fresh start accounting as of the date the Company emerged from bankruptcy, September 30, 2014, and reflect the conditions at that time. The intangible asset related to the LEU Segment backlog is amortized as the backlog, existing at emergence, is reduced, principally as a result of deliveries to customers. The intangible asset related to customer relationships is amortized using the straight-line method over the estimated average useful life of 15 years. Amortization of Intangible Assets is presented below gross profit on the Consolidated Statements of Operations. Intangible asset balances are as follows (in millions):


	December 31, 2025						December 31, 2024
	Gross Carrying Amount		Accumulated Amortization		Net Amount		Gross Carrying Amount		Accumulated Amortization		Net Amount
Backlog	$	54.6	$	50.6	$	4.0	$	54.6	$	46.8	$	7.8
Customer relationships	68.9		51.7		17.2		68.9		47.1		21.8
Total	$	123.5	$	102.3	$	21.2	$	123.5	$	93.9	$	29.6

The amount of amortization expense for intangible assets in each of the succeeding years is estimated to be as follows (in millions):


2026	$	6.1
2027	5.8
2028	5.9
2029	3.4
2030	—
Thereafter	—
Total	$	21.2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
Summary of Significant Accounting Policies (Policies)	Dec. 31, 2025
Summary of Significant Accounting Policies [Abstract]
Basis of Accounting, Policy [Policy Text Block]	Basis of Presentation and Principles of Consolidation The Consolidated Financial Statements of Centrus Energy Corp. (“Centrus” or the “Company”), which include the accounts of the Company, its principal subsidiary Enrichment Corp., and its other subsidiaries, were prepared in conformity with U.S. GAAP. Certain prior year amounts have been reclassified for consistency with the current year presentation. All material intercompany transactions have been eliminated.
Use of Estimates, Policy [Policy Text Block]	Use of Estimates The preparation of Consolidated Financial Statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect reported amounts presented and disclosed in the Consolidated Financial Statements. Significant estimates and judgments include, but are not limited to, revenue and related costs, asset valuations, pension and postretirement health and life benefit costs and obligations, the tax bases of assets and liabilities, the future recoverability of deferred tax assets, and determination of the valuation allowance for deferred tax assets. Actual results may differ from such estimates, and estimates may change if the underlying conditions or assumptions change.
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash and Cash Equivalents Cash and cash equivalents include short-term or highly liquid assets with original maturities of three months or less.
Inventory, Policy [Policy Text Block]	Inventories and Inventories Owed to Customers and Suppliers LEU consists of two components: SWU and UF6. SWU is a standard unit of measurement that represents the effort required to transform a given amount of natural uranium into two components: enriched uranium having a higher percentage of U235 and depleted uranium having a lower percentage of U235. The SWU contained in LEU is calculated using an industry standard formula based on the physics of enrichment. The amount of enrichment deemed to be contained in LEU under this formula is commonly referred to as its SWU component and the quantity of UF6 deemed to be used in the production of LEU under this formula is referred to as its uranium or “feed” component. SWU and uranium inventory costs are determined using the average cost method. SWU and uranium purchase costs include shipping costs when applicable. Inventories of SWU and uranium are valued at the lower of cost or NRV. NRV is the estimated selling price in the ordinary course of business less reasonably predictable costs of completion, disposal, and transportation. The estimated selling price for SWU and uranium is based on the pricing terms of contracts in the Company’s backlog, and, for uranium not under contract, the estimated selling price is based primarily on published price indicators at the balance sheet date. Inventories owed to customers and suppliers, included in current liabilities, consist primarily of SWU and uranium inventories owed to fabricators. Fabricators process LEU into fuel for use in nuclear reactors. As delivery obligations under actual customer orders arise, Centrus typically satisfies these obligations by arranging for the transfer to the customer of title to the specified quantity of LEU at the fabricator. Centrus’ balances of SWU and uranium may vary over time based on the timing of customer orders and Centrus’ delivery of LEU. Balances can be positive or negative based on Centrus’ contractual agreements with the fabricators. In cases where the transfer of title of LEU from Centrus to the customer results in quantities of SWU and uranium being owed by Centrus to the fabricator, the amounts of SWU and uranium owed to fabricators are satisfied as future deliveries of LEU to fabricators are made.
Income Tax, Policy [Policy Text Block]	Deferred Taxes Centrus follows the asset and liability approach to account for deferred taxes. Deferred tax assets and liabilities are recognized for the anticipated future tax consequences of temporary differences between the balance sheet carrying amounts of assets and liabilities and their respective tax bases. Deferred taxes are based on income tax rates in effect for the years in which temporary differences are expected to reverse. The effect on deferred taxes of a change in income tax rates is recognized in income when the change in rates is enacted in the law. A valuation allowance is provided if it is more likely than not that all, or some portion, of the deferred tax assets may not be realized.
Property, Plant and Equipment, Policy [Policy Text Block]	Property, Plant and Equipment Property, plant and equipment are recorded at acquisition cost. Leasehold improvements and machinery and equipment are depreciated on a straight-line basis over the shorter of the useful life of the assets or the lease term, if applicable. Refer also to Carrying Value of Long-Lived Assets below.
Intangible Assets, Policy [Policy Text Block]	Intangible Assets Centrus has intangible assets resulting from fresh start accounting as a result of emergence from Chapter 11 bankruptcy on September 30, 2014. The identifiable intangible assets relate to the sales backlog and customer relationships. The backlog intangible asset is amortized as the backlog valued at emergence is reduced, principally as a result of deliveries to customers. The customer relationships intangible asset is amortized using the straight-line method over the estimated average useful life of 15 years, with 3 ¾ years of scheduled amortization remaining. Refer also to Carrying Value of Long-Lived Assets below. Carrying Value of Long-Lived Assets The Company evaluates the carrying values of property, plant and equipment and identifiable intangible assets when events or changes in business circumstances indicate that the carrying amount of asset, or asset group, may not be fully recoverable. The carrying amount of a long-lived asset is not recoverable if it exceeds the sum of the undiscounted cash flows expected to result from the use and eventual disposition of the asset. An impairment loss is measured as the amount by which the carrying amount of a long-lived asset, or asset group, exceeds its fair value.
Fair Value of Financial Instruments, Policy [Policy Text Block]	Financial Instruments and Fair Value Measurement Accounting standards define fair value as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities required or permitted to be recorded at fair value, consideration is given to the principal or most advantageous market and assumptions that market participants would use when pricing the asset or liability. Pursuant to accounting standards, Centrus’ 0% Convertible Notes due August 2032 and 2.25% Convertible Notes due November 2030 are recorded at face value and carrying value respectively, and the fair value is disclosed. Centrus’ 8.25% Notes due February 2027 were recorded at face value and carrying value respectively, and the fair value as of December 31, 2024 is disclosed. The 8.25% Notes were redeemed on March 26, 2025. The estimated fair value of the 0% Convertible Notes, 2.25% Convertible Notes and 8.25% Notes are based on bid/ask quotes as of or near the balance sheet date. Debt issuance costs are deferred and amortized over the life of the instrument. The balance sheet carrying amounts for accounts receivable, accounts payable and accrued liabilities, and payables under inventory purchase agreements approximate fair value because of the short-term nature of the instruments.
Concentration Risk, Credit Risk, Policy [Policy Text Block]	Concentrations of Credit Risk Credit risk could result from the possibility of a customer failing to perform or pay according to the terms of a contract. Extension of credit is based on an evaluation of each customer’s financial condition. Centrus regularly monitors credit risk exposure and takes steps intended to mitigate the likelihood of such exposure resulting in a loss.
Segment Reporting, Policy [Policy Text Block]	Segments Centrus operates two business segments: LEU, which supplies various components of nuclear fuel to commercial customers from our global network of suppliers, and Technical Solutions, which provides advanced uranium enrichment for the nuclear industry and the U.S. government and advanced manufacturing and other technical services to government and private sector customers and advanced uranium enrichment for the nuclear industry and the U.S. government.
Revenue Recognition, Policy	Revenue The Company accounts for a contract when it has approval and commitment from both parties, the rights of the parties are identified, payment terms are identified, the contract has commercial substance and collectability of consideration is probable. Revenue for product and service sales is recognized when or as the Company transfers control of the promised products or services to the customer. Revenue is measured at the transaction price, which is based on the amount of consideration that the Company expects to receive in exchange for transferring the promised goods or services to the customer. The transaction price will include estimates of variable consideration to the extent it is probable that a significant reversal of revenue recognized will not occur. SWU and Uranium Revenue Revenue for the Company’s LEU segment is derived from sales of the SWU component of LEU, sales of both the SWU and uranium components of LEU, sales of conversion credits, and sales of UF6 and U3O8. Contracts with customers are primarily medium and long-term, fixed-commitment, contracts under which its customers are obligated to purchase a specified quantity of the SWU component of LEU or the SWU and uranium components of LEU. The Company’s contracts for UF6 and U3O8 are generally shorter-term, fixed-commitment contracts. Revenue is recognized at the time the customer obtains control of the LEU or uranium. Customers generally obtain control of LEU at nuclear fuel fabricators. Centrus ships LEU to nuclear fuel fabricators for scheduled or anticipated orders from utility customers. Based on customer orders, Centrus arranges for the transfer of title of LEU from Centrus to the customer for the specified quantity of LEU at the fuel fabricator. Each such delivery to a customer is accounted for as a distinct performance obligation under a contract, and a contract may call for multiple deliveries over a number of periods. The contract’s transaction price is allocated to each performance obligation based on the observable standalone selling price of each distinct delivery of SWU or uranium. For certain contracts the customers may elect not to take control of the LEU or uranium and Centrus may have the right to enforce payment under the terms of the contractual agreement. The revenue recognition for these contracts is assessed when it occurs. Utility customers in general have the option to defer receipt of uranium products purchased from the Company beyond the contractual sale period. In such cases, title to SWU and/or uranium components are transferred to the customer and a performance obligation for Centrus is created and a receivable is recorded. Cash is collected for the receivable under normal credit terms. The performance obligation is represented as deferred revenue in Deferred Revenue and Advances from Customers on the Consolidated Balance Sheet and the customer-titled product is classified as Deferred Costs Associated with Deferred Revenue on the Consolidated Balance Sheet. Risk of loss remains with Centrus until the customer obtains control of the uranium product. The recognition of revenue and related cost of sales occurs at the point in time at which the customer obtains control of SWU or uranium and risk of loss of the product transfers to the customer, which may occur beyond one year. The timing of the transfer of control, subject to notice period requirements, is at the option of the customer. As such, deferred costs and deferred revenue are classified within current assets and current liabilities, respectively. On occasion, the Company will accept payment in the form of uranium. Revenue from the sale of SWU under such contracts is recognized at the time transfer of control of LEU occurs and is based on the fair value of the uranium at contract inception or, as the quantity of uranium is finalized, if variable. Amounts billed to customers for handling costs are included in sales. Handling costs are accounted for as a fulfillment cost and are included in cost of sales. The Company does not have shipping costs associated with outbound freight after control over a product has transferred to a customer. The Company’s contracts with customers do not provide for significant payment terms or financing components. Technical Solutions Revenue The Company generally recognizes revenue for performance obligations to provide services over time based on costs incurred or the right to invoice method (in cases where the value transferred matches the Company’s billing rights), as the customer receives and consumes the benefits. For performance obligations in which control does not continuously transfer to the customer, the Company recognizes revenue at the point in time in which each performance obligation is fully satisfied. This coincides with the point in time the customer obtains control of the product or service, which typically occurs upon customer acceptance or receipt of the product or service, given that the Company maintains control of the product or service until that point. For performance obligation to deliver products with continuous transfer of control to the customer, the Company uses the cost-to-cost input method of progress because it best depicts the transfer of control to the customer that occurs as the Company incurs costs. Under the cost-to-cost method, the extent of progress towards completion is measured based on the proportion of direct costs incurred to date to the total estimated direct costs at completion of the performance obligation. Revenues are recorded proportionally as costs are incurred. Revenue for the Technical Solutions segment, which provides advanced uranium enrichment for the nuclear industry and the U.S. government and advanced manufacturing and other technical services to government and private sector customers is generally recognized over the contractual period as services are rendered. The Company recognizes revenue over time as it performs on these contracts because of the continuous transfer of control to the customer. For public sector contracts, this continuous transfer of control to the customer is supported by clauses in the contract that allow the customer to unilaterally terminate the contract for convenience, pay the Company for costs incurred plus a reasonable profit and assume control of any work in progress. The Company’s government and private sector contracts generally contain contractual termination clauses or entitle the Company to payments for work performed to date for goods and services that do not have an alternative use. With control transferring over time, revenue is recognized based on the extent of progress towards completion of the performance obligation. A contract may contain one or more performance obligations. Two or more promises to transfer goods or services to a customer may be considered a single performance obligation if the goods or services are highly interdependent or highly interrelated such that utility of the promised goods or services to the customer includes integration services provided by the Company. The Company determines the transaction price for each contract based on the consideration it expects to receive for the products or services being provided under the contract. If transaction prices are not stated in the contract for each performance obligation, contractual prices are allocated to performance obligations based on estimated relative standalone selling prices of the promised services. For contracts with multiple performance obligations, the Company allocates the transaction price to each performance obligation based on the estimated standalone selling price of the product or service underlying each performance obligation. The standalone selling price represents the amount the Company would sell the product or service to a customer on a standalone basis (i.e., not bundled with any other products or services). The Company's contracts with the U.S. government are subject to the FAR and the price is typically based on estimated or actual costs plus a reasonable profit margin. As a result of these regulations, the standalone selling price of products or services in the Company’s contracts with the U.S. government are typically equal to the selling price stated in the contract. The Company does not contemplate future modifications, including unexercised options, until they become legally enforceable. Contracts may be subsequently modified to include changes in specifications, requirements or price, which may create new or change existing enforceable rights and obligations. Depending on the nature of the modification, the Company considers whether to account for the modification as an adjustment to the existing contract or as a separate contract. Use of the cost-to-cost method requires the Company to make reasonably dependable estimates of costs at completion associated with the design, manufacture and delivery of products and services in order to calculate revenue. Significant judgment is used to estimate total revenue and costs at completion, particularly in the assumptions related to internal labor hours and third-party services for which a vendor invoice or quote is not yet available. As a significant change in one or more estimates could affect the profitability of the Company’s contracts, the Company reviews and updates its contract-related estimates regularly. Adjustments in estimated profits/losses are recognized under the cumulative catch-up method. Under this method, the impact of the adjustments is recognized in the period the adjustment is recognized. When estimates of total costs at completion for such an integrated, construction type contract exceed total estimates of revenue to be earned on a performance obligation related to complex equipment or related services, a provision for the remaining loss on the performance obligation is recognized in the period the loss is determined. The Company applied the practical expedient in paragraph ASC 606-10-50-14 and does not disclose the value of remaining performance obligations under service contracts having original expected terms of one year or less. The timing of revenue recognition may differ from the timing of invoicing to customers. Progress on satisfying performance obligations under contracts with customers and the related billings and cash collections are recorded on the Consolidated Balance Sheet as contract assets or contract liabilities. Contract balances are classified as assets or liabilities on a contract-by-contract basis at the end of each reporting period. Unbilled receivables are included in Accounts Receivable on the Consolidated Balance Sheet and arise when the timing of cash collected from customers differs from the timing of revenue recognition. In the Technical Solutions segment, amounts are billed as work progresses in accordance with agreed-upon contractual terms, either at periodic intervals or upon achievement of contractual milestones. Generally, billing occurs subsequent to revenue recognition, resulting in contract assets. These assets are reported on the Consolidated Balance Sheet on a contact-by-contract basis at the end of each reporting period. Those assets are recognized when the revenue associated with the contract is recognized prior to billing and derecognized when billed in accordance with the terms of the contract. To the extent billings to the customer precede the recognition of Technical Solutions revenue, the Company recognizes a liability included in Deferred Revenue and Advances from Customers on the Consolidated Balance Sheet.
Advanced Technology Costs, Policy [Policy Text Block]	Advanced Technology Costs American Centrifuge and related expenses that are outside of the Company’s customer contracts are included in Advanced Technology Costs.
Pension and Other Postretirement Plans, Policy [Policy Text Block]	Pension and Postretirement Health and Life Benefit Plans The Company provides retirement benefits to certain employees and retirees under defined benefit pension plans and a postretirement health and life benefit plan. The valuation of benefit obligations and costs is based on provisions of the plans and actuarial assumptions that involve judgments and estimates. Plan assets and benefit obligations are remeasured each year as of the balance sheet date, or when lump sum payments exceed certain levels, resulting in differences between actual and projected results. The Company has elected to recognize these actuarial gains and losses immediately in the statement of operations to provide transparency regarding the impacts of changes in plan assets and benefit obligations. Executive Severance Plan The Company provides severance benefits to certain covered executives, which may also include continuation of certain insurance benefits, under an Executive Severance Plan (the “Severance Plan”). The benefits payable under the Severance Plan are based on salary level, amongst other variables. As the severance expenses are part of an on-going benefit arrangement, the Company recognizes the expense when payment of the severance is probable and can be reasonably estimated in accordance with ASC 712, Compensation — Nonretirement Postemployment Benefits.
Stock-based Compensation, Policy [Policy Text Block]	Equity-Based Compensation Centrus has an equity-based compensation plan which authorizes the issuance of common stock to the Company’s employees, officers, directors, and other individuals providing services to the Company or its affiliates in the form of stock options, SARs, restricted stock units (“RSU”), restricted stock, notional stock units, performance awards, dividend equivalent rights, and other equity-based awards, as well as cash-based awards. Equity-based compensation cost for options, restricted stock, and other equity-settled awards are measured at the grant date based on the fair value of the award. The cost is recognized over the requisite service period on a straight-line basis over the vesting period. Equity-based compensation cost for awards likely to be settled with cash payments is recognized over the requisite service period and accrued as a liability and re-measured each reporting period based on the trading price of the Company’s common stock. The Company recognizes forfeitures as they occur. New Accounting Standards Recently Adopted Accounting Standards In November 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update ("ASU") 2023-07, Segment Reporting, to improve reportable segment disclosure requirements, primarily through enhanced disclosures about significant segment expenses. This pronouncement is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024 and early adoption is permitted. Based on the Company’s review, it does not have a material impact on its Consolidated Financial Statements. In December 2023, the FASB issued ASU 2023-09, Income Taxes, to improve the transparency of income tax disclosures, primarily through requiring consistent categories and greater disaggregation in the rate reconciliation and requiring disaggregation of income taxes paid by jurisdiction. This pronouncement is effective for fiscal years beginning after December 15, 2024 and early adoption is permitted. Based on the Company’s review, it does not have a material impact on its Consolidated Financial Statements. Accounting Standards Effective in Future Periods In November 2024, the FASB issued ASU 2024-03, Income Statement-Reporting Comprehensive Income-Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses, requiring public entities to disclose additional information about specific expense categories in the notes to the financial statements on an interim and annual basis. This pronouncement is effective for fiscal years beginning after December 15, 2026, and for interim periods beginning after December 15, 2027, and early adoption is permitted. The Company is evaluating the impact this will have on its Consolidated Financial Statements. In December 2025, the FASB issued ASU 2025-10, Government Grants (Topic 832), Accounting for Government Grants Received by Business Entities, to establish authoritative guidance on the accounting for government grants received by business entities. The amendments in this pronouncement establish the accounting for a government grant received by a business entity, including guidance for (1) a grant related to an asset and (2) a grant related to income. A grant related to an asset is a government grant, or part of a government grant, that is conditioned on the purchase, construction, or acquisition of an asset (for example, a long-lived asset or inventory). A grant related to income is a government grant, or part of a government grant, other than a grant related to an asset (for example, a grant that reimburses a business entity for operating expenses). This pronouncement is effective for annual reporting periods beginning after December 15, 2028, and for interim periods within those annual periods, and early adoption is permitted. The Company is evaluating the impact this will have on its Consolidated Financial Statements.

Segment Information (Segment Reporting Information) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting Information [Line Items]
Revenue	$ 448.7	$ 442.0	$ 320.2
Cost of sales	331.2	330.5	208.1
Gross Profit	117.5	111.5	112.1
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	85.9	73.0	84.5
LEU and Technical Solutions Segment
Segment Reporting Information [Line Items]
Revenue	448.7	442.0	320.2
Cost of sales	331.2	330.5	208.1
Gross Profit	117.5	111.5	112.1
LEU and Technical Solutions Segment \| Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenue	(12.4)	(6.4)	(5.0)
Cost of sales	(10.7)	(2.1)	(3.0)
Gross Profit	(1.7)	(4.3)	(2.0)
Low Enriched Uranium Segment [Member]
Segment Reporting Information [Line Items]
Cost of sales	245.4	258.1	166.9
Gross Profit	111.5	93.9	105.1
Low Enriched Uranium Segment [Member] \| Consolidation, Eliminations
Segment Reporting Information [Line Items]
Gross Profit	113.2	98.2	107.1
Low Enriched Uranium Segment [Member] \| Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenue	12.4	6.4	5.0
Gross Profit	1.7	4.3	2.0
Technical Solutions Segment [Member]
Segment Reporting Information [Line Items]
Revenue	461.1	448.4	325.2
Gross Profit	6.0	17.6	7.0
Technical Solutions Segment [Member] \| Consolidation, Eliminations
Segment Reporting Information [Line Items]
Gross Profit	6.0	17.6	7.0
Product [Member]
Segment Reporting Information [Line Items]
Revenue	346.2	349.9	269.0
Cost of sales	234.7	256.0	163.9
Product [Member] \| Low Enriched Uranium Segment [Member]
Segment Reporting Information [Line Items]
Revenue	358.6	356.3	274.0
Product [Member] \| Low Enriched Uranium Segment [Member] \| Intersegment Eliminations
Segment Reporting Information [Line Items]
Cost of sales	10.7	2.1	3.0
Product [Member] \| Technical Solutions Segment [Member]
Segment Reporting Information [Line Items]
Cost of sales	96.5	74.5	44.2
Separative Work Units [Member]
Segment Reporting Information [Line Items]
Revenue	298.7	246.8	208.2
Uranium [Member]
Segment Reporting Information [Line Items]
Revenue	47.5	103.1	60.8
Service [Member] \| Technical Solutions Segment [Member]
Segment Reporting Information [Line Items]
Revenue	102.5	92.1	51.2
Cost of sales	$ 96.5	$ 74.5	$ 44.2

Debt (Narrative) (Details) $ / shares in Units, $ in Millions	2 Months Ended	4 Months Ended	12 Months Ended
	Dec. 31, 2024 USD ($) Rate	Dec. 31, 2025 USD ($) Rate $ / shares	Dec. 31, 2025 USD ($) $ / shares Rate	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Aug. 18, 2025 USD ($)	Nov. 07, 2024 USD ($)
Long-term debt, carrying amount		$ 1,207.5	$ 1,207.5
Gain on early extinguishment of debt			(11.8)	$ 0.0	$ 0.0
Long-term debt	$ 472.5	$ 1,174.8	1,174.8	472.5
Interest expense			12.5	1.6	$ 0.0
Debt Instrument, Repaid, Principal			$ 74.3
Senior Notes [Member]
Debt instrument interest rate		8.25%	8.25%
Long-term debt, face amount	486.0	$ 1,207.5	$ 1,207.5	486.0
Long-term debt, current	6.1	$ 0.0	$ 0.0	6.1
2.25% Convertible Notes
Debt instrument interest rate \| Rate		2.25%	2.25%
Long-term debt, face amount	402.5	$ 402.5	$ 402.5	402.5
Debt Issuance Costs, Gross							$ 13.8
Debt Issuance Costs, Net	$ 13.5	11.3	11.3	13.5
Long-term debt		$ 391.2	$ 391.2
Debt Instrument, Interest Rate, Effective Percentage \| Rate		2.87%	2.87%
Debt Instrument, Convertible, Conversion Ratio			10.2564
Debt Instrument, Convertible, Conversion Price \| $ / shares		$ 97.5	$ 97.5
2.25% Convertible Notes \| Convertible Debt Conversion Terms One
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger \| Rate	98.00%
2.25% Convertible Notes \| Convertible Debt Conversion Terms Two
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger \| Rate	130.00%
Debt Instrument, Convertible, Threshold Trading Days \| Rate	20
Debt Instrument, Convertible, Threshold Consecutive Trading Days \| Rate	30
2.25% Convertible Notes \| Senior Notes [Member]
Long-term debt, face amount		$ 402.5	$ 402.5
0% Convertible Notes
Long-term debt, face amount		805.0	805.0
Debt Issuance Costs, Gross						$ 22.5
Debt Issuance Costs, Net	$ 0.0	21.3	21.3	0.0
Long-term debt		$ 783.7	$ 783.7
Debt Instrument, Interest Rate, Effective Percentage \| Rate		0.41%	0.41%
Debt Instrument, Convertible, Conversion Ratio			4.3551
Debt Instrument, Convertible, Conversion Price \| $ / shares		$ 229.62	$ 229.62
0% Convertible Notes \| Convertible Debt Conversion Terms One
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger \| Rate		98.00%
Debt Instrument, Convertible, Threshold Trading Days \| Rate		5
Debt Instrument, Convertible, Threshold Consecutive Trading Days \| Rate		10
0% Convertible Notes \| Convertible Debt Conversion Terms Two
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger \| Rate		130.00%
Debt Instrument, Convertible, Threshold Trading Days \| Rate		20
Debt Instrument, Convertible, Threshold Consecutive Trading Days \| Rate		30
8.25% Notes \| Senior Notes [Member]
Long-term debt, face amount	74.3	$ 0.0	$ 0.0	74.3
Long-term debt, current	$ 6.1	$ 0.0	$ 0.0	$ 6.1

Summary of Significant Accounting Policies (Details)	12 Months Ended
Summary of Significant Accounting Policies (Details)	Dec. 31, 2025
Average useful life of finite-lived intangible assets	15 years
Concentration Risk, Supplier	Concentrations of Supply Risk and Other Considerations with the War in UkraineThe current war in Ukraine has led to the U.S., Russia and other countries imposing sanctions and other measures that restrict international trade, including the Import Ban Act and the Russian Decree. The situation is rapidly changing, and it is not possible to predict future actions that could be taken.In May 2024, the U.S. passed the Import Ban Act that bans imports of LEU from Russia into the U.S., subject to the issuance of waivers by the DOE. Centrus has received three waivers from the DOE authorizing the importation of Russian LEU committed for delivery to our U.S. and foreign customers through 2027 and authorizing the importation of Russian LEU for processing and reexport to our foreign customers in 2025. On November 14, 2024, Russia passed the Russian Decree, effective through December 31, 2027, that rescinded TENEX’s general license to export LEU to the United States or to entities registered in the United States. Beginning in November 2024, TENEX was required to obtain a specific export license from the Russian authorities in order for it to make shipments of LEU to Centrus and for shipments to Centrus through 2027. Except for the initial delay, TENEX has received specific licenses to satisfy shipments to Centrus in the regular course of business. However, Centrus has been informed that there is no certainty whether such licenses will be issued by the Russian authorities and if issued, whether they will be issued in a timely manner or rescinded prior to the shipment taking place. Canada has imposed sanctions on ocean transportation of Russian LEU, but has given a permit to the Company’s carrier that extends to March 2027. Additional sanctions or other restrictions by the U.S. or foreign governments (including the Russian government) could be imposed or the existing Canadian permit might not be extended. Any sanctions or restrictions directed at trade in LEU from Russia or the parties involved in such trade or otherwise, including denial or non-renewal of licenses or permits, could interfere with, or prevent, implementation of the TENEX Supply Contract. In response to these bans and potential future bans or restrictions taken to limit the supply of Russian LEU or to prohibit or limit dealings with Russian entities, including, but not limited to, TENEX or Rosatom, to the extent within the Company’s control, the Company will seek additional licenses, waivers or other approvals from the government imposing such measures to ensure that the Company could continue to fulfill its purchase and sales obligations. There is no assurance that such licenses, waivers, or approvals would be granted. If a license, waiver or approval were not granted, the Company would need to look to alternative sources of LEU to replace the LEU that it could not procure from TENEX. The Company has multiple sources of supply; however, the supply contract with TENEX remains the Company’s largest source and accounts for well over one-half of its anticipated supply in 2026-2027 for deliveries to U.S. customers. The Company has contracts and prospects for alternative sources that it expects to use to mitigate a portion of the near term impacts. However, the Company’s alternative sources are not sufficient to replace all of the Russian LEU the Company is currently permitted to import under the RSA, and to the extent additional supply cannot be obtained, or obtained at a higher costs, it will have a material adverse impact on its business, results of operations, and competitive position.Given the foregoing, there is no assurance that future developments would not have a material adverse effect on the Company’s procurement, payment, delivery or sale of LEU under the TENEX Supply Contract and well as on our business, results of operations, and competitive position.
Related Party Transaction, Description of Transaction	Foreign CurrencyThe Company records foreign currency transaction gains and losses, realized and unrealized, and foreign exchange gains and losses resulting from the re-measurement of monetary assets and liabilities that are not denominated in U.S. dollars in Other Income, Net in the Consolidated Statements of Operations.
Senior Notes [Member]
Debt Instrument, Interest Rate, Stated Percentage	8.25%

- Definition

A description of the related party transaction, including transactions to which no amounts or nominal amounts were ascribed and such other information deemed necessary to an understanding of the effects of the transactions on the financial statements. Examples of common related party transactions are, sales, purchases and transfers of realty and personal property, services received or furnished, loans and leases to and from top management and affiliates.

+ References + Details

Pension and Postretirement Health and Life Benefits (Schedule of Assumptions Used) (Details)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Pension Plan, Defined Benefit [Member]
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate	5.60%	5.70%	5.20%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets	6.30%	6.80%	6.80%
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate	5.40%	5.60%	5.20%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets	0.00%	0.00%	4.00%

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Total revenue	$ 448,700	$ 442,000	$ 320,200
Cost of sales	331,200	330,500	208,100
Gross profit (loss)	117,500	111,500	112,100
Advanced technology license and decommissioning costs	16,900	17,200	14,200
Selling, general and administrative	36,200	35,000	36,900
Amortization of intangible assets	8,400	9,800	6,300
Operating income (loss)	50,200	48,000	52,400
Nonoperating components of net periodic benefit expense (income)	6,800	(14,700)	(23,200)
Interest Expense, Nonoperating	14,000	2,700	1,300
Investment income	(44,700)	(12,900)	(8,700)
Other Nonoperating Income	0	(100)	(1,500)
Income (loss) before income taxes	85,900	73,000	84,500
Provision (benefit) for income taxes	8,100	(200)	100
Net income (loss)	$ 77,800	$ 73,200	$ 84,400
Net income (loss) per common share - basic	$ 4.33	$ 4.49	$ 5.55
Net income (loss) per common share - diluted	$ 3.90	$ 4.47	$ 5.44
Weighted-average number of shares outstanding:
Average number of shares outstanding, basic	17,967	16,309	15,212
Average number of shares outstanding, diluted	19,925	16,373	15,501
Labor and Related Expense	$ 5,800	$ 1,500	$ 2,300
Gain (Loss) on Extinguishment of Debt	(11,800)	0	0
Accumulated Deficit [Member]
Net income (loss)	77,800	73,200	84,400
Product [Member]
Total revenue	346,200	349,900	269,000
Cost of sales	234,700	256,000	163,900
Separative Work Units [Member]
Total revenue	298,700	246,800	208,200
Uranium [Member]
Total revenue	$ 47,500	$ 103,100	$ 60,800

Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2025

Fair Value Disclosures [Abstract]

Schedule of Financial Instruments Recorded at Fair Value

Financial Instruments Recorded at Fair Value (in millions):


	December 31, 2025								December 31, 2024
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Assets:
Cash and cash equivalents	$	1,957.2	$	—	$	—	$	1,957.2	$	671.4	$	—	$	—	$	671.4
Deferred compensation asset (a)	0.5		—		—		0.5		0.4		—		—		0.4

Liabilities:
Deferred compensation obligation (a)	$	0.5	$	—	$	—	$	0.5	$	0.4	$	—	$	—	$	0.4

(a) The deferred compensation obligation represents the balance of deferred compensation plus net investment earnings. The deferred compensation plan is funded through a rabbi trust. Trust funds are invested in mutual funds for which unit prices are quoted in active markets and are classified within Level 1 of the valuation hierarchy.

Revenue and Contracts with Customers (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended				37 Months Ended	38 Months Ended	72 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2025	Feb. 11, 2026	Dec. 31, 2024	Jan. 05, 2026	Sep. 28, 2023	Nov. 10, 2022
Revenue, nonmonetary transaction	$ 32.8	$ 30.2	$ 14.8
Deferred revenue, additions in period	17.3	16.9
Deferred revenue, revenue recognized	102.6	117.2
Separative work units borrowed in period, value				$ 28.3
Accounts receivable, net	30.7	80.0			$ 30.7		$ 80.0
Revenue, remaining performance obligation, amount	600.0	800.0			600.0		800.0
Deferred Revenue and Advances from Customers - Current and Noncurrent	131.1	216.4			131.1		216.4
Contract with Customer, Advances, Liability	0.0	32.8			0.0		32.8
Revenue	448.7	442.0	320.2
Unrealized Gain (Loss), Foreign Currency Transaction, before Tax	0.1	(0.2)	$ 0.1
Option 1a
Contract Value	108.2				108.2
Contract Estimated Fee	8.7				8.7
Contract Minimum Fee	99.3				99.3
Option 1b
Contract Estimated Fee	15.2				15.2
Contract Minimum Fee	163.5				163.5
HALEU Ops Contract
Cost obligated to DOE					316.2
Total Amount Program Cost					316.6
Contract Value										$ 150.0
HALEU Ops Contract \| Phase Scope
Contract Value	8.8				8.8				$ 5.8
HALEU Demo Contract
Contract Value	$ 173.0				$ 173.0
Government cost share, percentage	80.00%				80.00%
HALEU Demo Contract \| Subsequent Event
Contract Value								$ 170.0
Contract Value, Award Task								$ 900.0
Maximum [Member] \| HALEU Ops Contract \| Phase 1
Government cost share portion										30.0
Company cost share portion										$ 30.0
Government [Member] \| HALEU Ops Contract
Proceeds from Customers					$ 225.3
Government [Member] \| HALEU Demo Contract
Proceeds from Customers							171.2
Low Enriched Uranium Segment [Member]
Revenue, remaining performance obligation, amount	$ 600.0	700.0			600.0		700.0
Technical Solutions Segment [Member]
Revenue, remaining performance obligation, amount	$ 79.1	$ 28.0			$ 79.1		$ 28.0
Scenario, Forecast [Member] \| HALEU Ops Contract
Cost obligated to DOE						$ 317.0
Total Amount Program Cost						317.4
Scenario, Forecast [Member] \| HALEU Ops Contract \| Phase Scope
Contract Value						$ 9.7

Income Taxes (Deferred Income Taxes) (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Components of Deferred Tax Assets and Liabilities [Abstract]
Deferred Tax Assets, Employee Benefits Costs	$ 21.1	$ 22.1
Deferred Tax Assets, Inventory	19.0	27.2
Deferred Tax Assets, Property, Plant and Equipment	178.1	178.2
Deferred Tax Asset, In-Process Research and Development	1.5	2.4
Deferred Tax Assets, Net Operating Loss and Credit Carryforwards	159.0	165.2
Deferred Tax Assets, Accrued Expenses	0.5	0.4
Deferred Tax Assets, Long-Term Debt and Financing Costs	0.9	3.8
Deferred Tax Asset, Lease Liability	0.5	0.5
Deferred Tax Assets, Other	0.7	0.8
Deferred Tax Assets, Gross	381.3	400.6
Deferred Tax Assets, Valuation Allowance	(355.4)	(365.7)
Deferred Tax Assets, Net of Valuation Allowance	25.9	34.9
Deferred Tax Liabilities, Intangible Assets	3.3	4.9
Deferred Tax Liability, Lease Asset	0.4	0.3
Deferred Tax Liabilities, Prepaid Expenses	0.3	0.4
Deferred Tax Liabilities	4.0	5.6
Deferred Tax Assets, Net, Current	$ 21.9	$ 29.3

Inventories (Narrative) (Details) - USD ($) $ in Millions	1 Months Ended	12 Months Ended
Inventories (Narrative) (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Inventory, Net [Abstract]
Separative work units borrowed in period, value					$ 28.3
Separative work units repaid in period, value		$ (39.7)	$ (13.6)	$ (11.1)
Separative work units valuation change in period		3.6	$ 2.1	$ 7.4
UF6 units borrowed in period	$ 22.5
UF6 repaid in period, value		$ (29.8)

Stock-Based Compensation Costs, Rollforward (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options	0
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Exercise Price		$ 0	$ 4.37	$ 4.37
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price		0	0
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price		$ 4.37	$ 0
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Remaining Contractual Term			3 months 18 days	2 years 2 months 12 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value			$ 4,800	$ 2,700
Board Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	3,000	21,000	17,000	28,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	4,000	21,000	17,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	(21,000)	(14,000)	(28,000)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	1,000	3,000	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value	$ 190.04	$ 41.65	$ 35.95	$ 38.80
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	190.04	41.65	35.95
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value	41.65	35.95	38.80
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value	$ 190.04	$ 35.95	$ 0
Employee Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	18,000	16,000	21,000	3,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	6,000	0	20,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	(4,000)	(5,000)	(1,000)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	0	0	1,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value	$ 73.84	$ 55.54	$ 54.04	$ 24.01
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	113.43	0	55.54
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value	55.54	49.23	24.01
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value	$ 0	$ 0	$ 24.01
Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number			0	70,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period			0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period			(74,000)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period			4,000
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options	0
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Exercise Price			$ 0	$ 5.53
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price			0
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price			5.53
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price			$ 5.53
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price	$ 0
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Remaining Contractual Term				3 months 18 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value				$ 2,700
Stock Appreciation Rights (SARS), Performance Condition [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number		0	17,000	18,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		0	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period		(17,000)	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period		0	1,000
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options	0
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Exercise Price		$ 0	$ 19.44	$ 19.44
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price		0	0
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price		19.44	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price		$ 0	$ 19.44
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price	$ 0
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Remaining Contractual Term			2 months 12 days	1 year 3 months 18 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value			$ 300	$ 0
Notional Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number		0	0	122,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		0	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period		0	(104,000)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period		0	18,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value		$ 0	$ 0	$ 5.53
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value		0	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value		0	5.53
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value		$ 0	$ 5.53
Notional Stock Units, Performance Condition [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number		0	8,000	8,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		0	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period		(8,000)	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period		0	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value		$ 0	$ 39.55	$ 39.55
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value		0	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value		39.55	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value		$ 0	$ 0
Restricted Stock, Performance Condition [Domain] \| 2024 Award
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	17,000	24,000	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	0	24,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	(3,000)	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	4,000	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value	$ 38.67	$ 38.67	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	0	38.67
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value	38.67	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value	$ 38.67	$ 0

Cash, Cash Equivalents and Restricted Cash

12 Months Ended

Dec. 31, 2025

Cash, Cash Equivalents and Restricted Cash [Abstract]

Cash and Cash Equivalents Disclosure

CASH, CASH EQUIVALENTS AND RESTRICTED CASH

The following table summarizes the Company’s cash, cash equivalents and restricted cash as presented on the Consolidated Balance Sheets to amounts on the Consolidated Statements of Cash Flows (in millions):


	December 31,
	2025		2024
Cash and cash equivalents	$	1,957.2	$	671.4
Deposits for financial assurance - current (a)	0.2		30.0
Deposits for financial assurance - noncurrent	2.7		2.6
Total cash, cash equivalents and restricted cash	$	1,960.1	$	704.0

(a) Deposits for financial assurance - current is included within Other Current Assets in the Consolidated Balance Sheets.

The Company has $0.1 million and $0.5 million denominated in euros as of December 31, 2025 and 2024, respectively, and recorded $0.1 million in transaction losses, $0.2 million in transaction gains, and less than $0.1 million in transaction losses in the year ended December 31, 2025, 2024, and 2023, respectively.

The following table provides additional detail regarding the Company’s deposits for financial assurance (in millions):


	December 31, 2025				December 31, 2024
	Current		Long-Term		Current		Long-Term
Collateral for Inventory Loans	$	—	$	—	$	29.8	$	—
Workers’ Compensation	—		2.6		—		2.5
Other	0.2		0.1		0.2		0.1
Total deposits for financial assurance	$	0.2	$	2.7	$	30.0	$	2.6

In 2022, the Company entered into three inventory loans which required a cash deposit into an escrow fund (see Note 4, Inventories). In March 2025, the Company repaid two of the three inventory loans and, in May 2025, received $18.6 million of restricted cash which was released from escrow. In June 2025, the Company repaid the last of the three inventory loans and, in July 2025, received $11.2 million of restricted cash which was released from escrow (see Note 4, Inventories).

The Company has provided financial assurance to states in which it was previously self-insured for workers’ compensation in accordance with each state’s requirements in the form of a surety bond or deposit that is fully cash collateralized by Centrus. Each surety bond or deposit is subject to reduction and/or cancellation, as each state determines that the likelihood of further workers’ compensation obligations related to the period of self-insurance.

Schedule of Debt (Details) - USD ($) $ in Millions	12 Months Ended
Schedule of Debt (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Long-term debt, carrying amount	$ 1,207.5
Long-Term Debt, Maturity, Year One	0.0
Long-Term Debt, Maturity, Year Two	0.0
Long-Term Debt, Maturity, Year Three	0.0
Long-Term Debt, Maturity, Year Four	0.0
Long-Term Debt, Maturity, Year Five	402.5
Long-Term Debt, Maturity, after Year Five	805.0
Interest Expense, Debt, Excluding Amortization	9.1	$ 1.3	$ 0.0
Amortization of Debt Issuance Costs	3.4	0.3	0.0
Interest expense	12.5	1.6	$ 0.0
2.25% Convertible Notes
Debt Instrument [Line Items]
Long-term debt, face amount	402.5	402.5
0% Convertible Notes
Debt Instrument [Line Items]
Long-term debt, face amount	805.0
Senior Notes [Member]
Debt Instrument [Line Items]
Long-term debt, face amount	1,207.5	486.0
Long-term debt, current	0.0	6.1
Senior Notes [Member] \| 8.25% Notes
Debt Instrument [Line Items]
Long-term debt, face amount	0.0	74.3
Long-term debt, interest	0.0	9.2
Long-term debt, current	0.0	$ 6.1
Senior Notes [Member] \| 2.25% Convertible Notes
Debt Instrument [Line Items]
Long-term debt, face amount	$ 402.5

Accumulated Other Comprehensive Income (Loss)	12 Months Ended
Accumulated Other Comprehensive Income (Loss)	Dec. 31, 2025
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss)	ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)The sole component of accumulated other comprehensive income (loss) relates to activity in the accounting for pension and postretirement health and life benefit plans. The amortization of prior service costs (credits) is reclassified from accumulated other comprehensive income (loss) and included in the computation of net periodic benefit cost. For further details, refer to Note 11, Pension and Postretirement Health and Life Benefits.

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Preferred Stock, Shares Authorized	20,000,000
Common Stock, Shares, Issued	19,664,565
Series B Preferred Stock [Member]
Preferred Stock, Par Value Per Share	$ 1.00
Common Class A [Member]
Common Stock, Shares, Outstanding	18,945,365	16,045,916	14,956,434	13,919,646
Common Stock, Par or Stated Value Per Share	$ 0.10	$ 0.10
Common Stock, Shares Authorized	70,000,000	70,000,000
Common Stock, Shares, Issued	18,945,365	16,045,916
Common Class B [Member]
Common Stock, Shares, Outstanding	719,200	719,200	719,200	719,200
Common Stock, Par or Stated Value Per Share	$ 0.10	$ 0.10
Common Stock, Shares Authorized	30,000,000	30,000,000
Common Stock, Shares, Issued	719,200	719,200

Income Taxes Income Taxes (Tables)

12 Months Ended

Dec. 31, 2025

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

The income tax expense (benefit) is as follows (in millions):


	Year Ended December 31,
	2025		2024		2023
Current:
Federal	$	—	$	—	$	—
State and local	0.7		0.5		1.6
Foreign	—		—		—
	0.7		0.5		1.6
Deferred:
Federal (a)	8.1		(0.6)		(0.7)
State and local	(0.7)		(0.1)		(0.8)
Foreign	—		—		—
	7.4		(0.7)		(1.5)

Income tax expense (benefit)	$	8.1	$	(0.2)	$	0.1

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

Future tax consequences of temporary differences between the carrying amounts for financial reporting purposes and the Company’s estimate of the tax bases of its assets and liabilities result in deferred tax assets and liabilities, as follows (in millions):


	December 31,
	2025		2024
Deferred tax assets:
Employee benefits costs	$	21.1	$	22.1
Inventory	19.0		27.2
Property, plant and equipment	178.1		178.2
Research and experimental expenditures	1.5		2.4
Net operating loss and credit carryforwards	159.0		165.2
Accrued expenses	0.5		0.4
Long-term debt and financing costs	0.9		3.8
Lease liability	0.5		0.5
Other	0.7		0.8
Deferred tax assets	381.3		400.6
Valuation allowance	(355.4)		(365.7)
Deferred tax assets, net of valuation allowance	$	25.9	$	34.9

Deferred tax liabilities:
Intangible assets	$	3.3	$	4.9
Lease asset	0.4		0.3
Prepaid expenses	0.3		0.4
Deferred tax liabilities	4.0		5.6
Deferred tax assets, net	$	21.9	$	29.3

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

A reconciliation of income taxes calculated based on the federal statutory income tax rate and the effective tax rate follows:


	Year Ended December 31,
	2025				2024				2023
	Amount		Percentage		Amount		Percentage		Amount		Percentage
Federal statutory tax rate	$	17.9	21	%	$	15.3	21	%	$	17.7	21	%
State and local income taxes, net of federal income tax effect (1)	(0.3)		—		(0.3)		—		—		—
Changes in valuation allowances	(10.2)		(12)		(16.6)		(23)		(19.4)		(23)
Nontaxable or nondeductible items
Nondeductible Executive compensation under IRC section 162(m)	0.3		1		0.9		1		0.8		1
Other	0.2		—		(0.2)		—		0.4		—
Changes in unrecognized tax benefits	0.2		—		0.7		1		0.6		1
Effective tax rate	$	8.1	10	%	$	(0.2)	—	%	$	0.1	—	%

(1) State Taxes in Maryland (greater than 50 percent) of the tax effect in this category for the calendar year ending December 31, 2025.

Schedule of Unrecognized Tax Benefits Roll Forward

A reconciliation of the beginning and ending amount of unrecognized tax benefits follows (in millions):


	Year Ended December 31,
	2025		2024
Balance at beginning of the period	$	3.4	$	2.9
Additions to tax positions of current period	0.2		0.5
Reductions to tax positions of prior years	—		—
Balance at end of the period	$	3.6	$	3.4

Stock-Based Compensation

12 Months Ended

Dec. 31, 2025

Share-Based Payment Arrangement, Noncash Expense [Abstract]

Stock-Based Compensation

-RELATED COMPENSATION

The Company’s 2014 Plan authorizes the issuance of stock options, SARs, restricted stock units, restricted stock, notional stock units, performance awards, dividend equivalent rights, and other equity-based awards, as well as cash-based awards, to employees, officers, directors, and other individuals providing services to the Company or its affiliates. The 2014 Plan currently authorizes the issuance of up to 1,900,000 shares. As of December 31, 2025, there were 547,669 shares available for future awards.

Under this plan, the Company has granted awards that are subject to annual, cliff-based or performance-based vesting. The cliff-based awards typically vest after three years of service. The performance-based awards vest if the Company reaches or exceeds a pre-defined net income target for the three-year award term. Equity awards are payable in common stock, cash, or a combination of both, at the discretion of the Board of Directors. Compensation costs for awards that are likely to be settled with cash payments are remeasured each reporting period based on the closing price of the Company’s Class A Common Stock. These cumulative vested costs are accrued in Accounts Payable and Accrued Liabilities or Other Long-Term Liabilities. Equity awards that are payable in stock are accounted for as equity and compensation costs and are amortized on a straight-line basis over the vesting period.

In March 2022, 2023, and 2024 and in February 2025, restricted stock units were granted to participating executives with a vesting period ending in March 2025, 2026, 2027, and 2028 respectively. The restricted stock unit awards are time based and payable in shares of the Company’s Class A Common Stock subject to achieving a threshold level of cumulative net income over the vesting period. The grant-date value is included in Excess of Capital over Par Value as the value is amortized over the vesting period.

The plan payouts for the 2020-2022 performance period were settled in Class A Common Stock in March and April 2023. In the first quarter of 2023, the Company withheld $1.9 million of shares that vested during the period for the purpose of funding the grantees’ tax withholding obligations under the terms of the equity-based compensation plan.

The Class A Common Stock issued for the 2021-2023 performance period were issued in March 2024. The Class A Common Stock issued for the 2022-2024 performance period were issued in March 2025. The Company withheld $0.1 million and $0.3 million of shares, respectively, that vested during the period to fund the grantees’ tax withholding obligations under the terms of the equity-based compensation plan.

In 2025, the Compensation, Nominating and Governance Committee (“CNGC”) of the Board approved a resolution primarily related to the 2024 RSU grants to withhold shares to fund the grantees’ income tax liabilities beyond the Company’s legal requirement. The resolution resulted in reclassification of these grants from equity to liability, $3.6 million of Equity-Related Compensation in the Consolidated Statements of Operations, and cash payments of $2.2 million.

In 2024, the CNGC approved a resolution primarily related to the 2023 RSU grants to withhold shares to fund the grantees’ income tax liabilities beyond the Company’s legal requirement. The resolution resulted in reclassification of these grants from equity to liability, $0.1 million of Equity-Related Compensation in the Consolidated Statements of Operations, and cash payments of $0.3 million.

Compensation cost for restricted stock units is measured at the grant date, based on the fair value of the award, and is recognized on a straight-line basis over the requisite service period. As of December 31, 2025, there was $1.4 million of unrecognized compensation cost, adjusted for actual forfeitures, related to non-vested stock-based payments granted, all of which relates to restricted stock units. That cost is expected to be recognized over a weighted-average period of 25 months. In 2025, certain participating executives were granted Class A Common Stock that vested immediately. Compensation costs for Class A Common Stock awards is measured and recognized at the grant date, based on the fair value of the award.

A summary of stock-based compensation costs is as follows (in millions):


	Year Ended December 31,
	2025		2024		2023

Notional stock units and stock appreciation rights	$	—	$	—	$	1.0
Restricted stock	$	0.7	$	0.5	$	0.4
BOD and employee restricted stock units	4.8		1.0		0.9
Common stock	0.2		—		—
Total stock-based compensation costs	$	5.7	$	1.5	$	2.3

Total recognized tax benefit	$	(1.2)	$	(0.3)	$	(0.3)

The total recognized tax benefit is reported at the federal statutory rate net of the tax valuation allowance.

Board Restricted Stock Units

Non-employee, independent directors are granted restricted stock units as part of their compensation for serving on the Board of Directors. Settlement of these restricted stock units is made in shares of Class A Common Stock upon the director’s retirement, other end of service, or vesting, in accordance with the terms of the grant agreement. The restricted stock units generally vest over one year; however, vesting is accelerated upon (1) the director attaining eligibility for retirement, (2) termination of the director’s service by reason of death or disability, or (3) a change in control. As of December 31, 2025, approximately 111,000 shares of restricted stock units could potentially be converted to Class A Common Stock once vested and settled.

A summary of Centrus’ board restricted stock activity is as follows:


	Shares (in thousands)	Weighted Average Grant Date Fair Value (per share)

Nonvested at December 31, 2022	28	$38.80
Granted	17	$35.95
Vested	(28)	$38.80
Forfeited	—	—
Nonvested at December 31, 2023	17	$35.95
Granted	21	$41.65
Vested	(14)	$35.95
Forfeited	(3)	$35.95
Nonvested at December 31, 2024	21	$41.65
Granted	4	$190.04
Vested	(21)	$41.65
Forfeited	(1)	$190.04
Nonvested at December 31, 2025	3	$190.04

Employee Restricted Stock Units

In 2021 and 2025, certain employees were granted restricted stock units as part of their compensation. The restricted stock units generally vest over two to three years and will be settled in Class A Common Stock upon vesting. As of December 31, 2025, 3,000 of these restricted stock units were outstanding. In December 2023, the Company granted 20,000 restricted stock units to the new CEO as part of his compensation. In April and August 2025, the Company granted restricted stock units to the new SVP & CFO as part of their compensation. The restricted stock units generally vest over one to five years and will be settled in Class A Common Stock. As of December 31, 2025, 15,000 shares of these restricted stock units could potentially be converted to Class A Common Stock once vested and settled.

A summary of Centrus’ employee restricted stock activity is as follows:


	Shares (in thousands)	Weighted Average Grant Date Fair Value (per share)

Nonvested at December 31, 2022	3	$24.01
Granted	20	$55.54
Vested	(1)	$24.01
Forfeited	(1)	$24.01
Nonvested at December 31, 2023	21	$54.04
Granted	—	—
Vested	(5)	$49.23
Forfeited	—	—
Nonvested at December 31, 2024	16	$55.54
Granted	6	$113.43
Vested	(4)	$55.54
Forfeited	—	—
Nonvested at December 31, 2025	18	$73.84

Stock Options

The intrinsic value of an option, if any, represents the excess of the fair value of the common stock over the exercise price. The fair value of stock option awards is estimated using the Black-Scholes option pricing model, which includes a number of assumptions including Centrus’ estimates of stock price volatility, employee stock option exercise behaviors, future dividend payments, and risk-free interest rates.

The expected term of options granted is the estimated period of time from the beginning of the vesting period to the date of expected exercise or other settlement, based on historical exercises and post-vesting terminations. Centrus has estimated the expected term using the simplified method described in SEC Staff Accounting Bulletin Topic 14, Share-Based Payment, due to the lack of historical exercise and post-vesting termination information available for the Company since its reorganization. Future stock price volatility is estimated based on the Company’s historical volatility. The risk-free interest rate for the expected option term is based on the U.S. Treasury yield curve in effect at the time of grant. No cash dividends are expected in the foreseeable future, and therefore, an expected dividend yield of zero is used in the option valuation model.

There were no options granted in the years ended December 31, 2025, 2024, and 2023.

Stock options vest and become exercisable in equal annual installments over a three or four year period and expire ten years from the date of grant. A summary of stock option activity is as follows:


	Stock Options (in thousands)	Weighted Average Exercise Price (per share)	Weighted Average Remaining Contractual Life in Years	Aggregate Intrinsic Value (in millions)

Outstanding at December 31, 2022	96	$4.37	2.2	$2.7
Granted	—	—	—	—
Exercised	—	—	—	—
Forfeited/Cancelled	—	—	—	—
Outstanding at December 31, 2023	96	$4.37	0.3	$4.8
Granted	—	—	—	—
Exercised	(96)	$4.37	—	—
Forfeited/Cancelled	—	—	—	—
Outstanding at December 31, 2024 and 2025	—	—	—	—





Exercisable at December 31, 2025	—	—	—	—

Stock Appreciation Rights

The intrinsic value of a SAR, if any, represents the excess of the fair value of the common stock over the exercise price. The fair value of SAR awards is estimated using the Black-Scholes option pricing model, which includes a number of assumptions including Centrus’ estimates of stock price volatility, expected term, future dividend payments, and risk-free interest rates. Future stock price volatility is estimated based on the Company’s historical volatility. The risk-free interest rate for the expected term is based on the U.S. Treasury yield curve in effect at the time of grant. No cash dividends are expected in the foreseeable future and, therefore, an expected dividend yield of zero is used in the valuation model.

Stock Appreciation Rights - 2020 Award

These SARs generally have a defined term of three years from award and are automatically exercised at the end of its term.

A summary of SARs with time-based vesting granted under the 2014 Plan is as follows:


	Stock Appreciation Rights (in thousands)	Weighted Average Exercise Price (per share)	Weighted Average Remaining Contractual Life in Years	Aggregate Intrinsic Value (in millions)

Outstanding at December 31, 2022	70	$5.53	0.3	$2.7
Granted	—	—	—	—
Exercised	(74)	$5.53	—	—
Forfeited/Cancelled	4	$5.53	—	—
Outstanding at December 31, 2023, 2024 and 2025	—	—	—	—









Exercisable at December 31, 2025	—	—	—	—

Stock Appreciation Rights (Performance Condition) - 2021 Award

These SARs generally have a defined term of three years from award and are automatically exercised at the end of its term if the performance condition has been met.

A summary of SARs with performance-based vesting granted under the 2014 Plan is as follows:


	Stock Appreciation Rights (in thousands)	Weighted Average Exercise Price (per share)	Weighted Average Remaining Contractual Life in Years	Aggregate Intrinsic Value (in millions)

Outstanding at December 31, 2022	18	$19.44	1.3	—
Granted	—	—	—	—
Exercised	—	—	—	—
Forfeited/Cancelled	(1)	$19.44	—	—
Outstanding at December 31, 2023	17	$19.44	0.2	$0.3
Granted	—	—	—	—
Exercised	(17)	$19.44	—	—
Forfeited/Cancelled	—	—	—	—
Outstanding at December 31, 2024 and 2025	—	—	—	—





Exercisable at December 31, 2025	—	—	—	—

Notional Stock Units

A summary of notional stock units with time-based vesting granted under the 2014 Plan is as follows:


	2019 and 2020 Awards		2021 Award
	Shares (in thousands)	Weighted Average Grant Date Fair Value (per share)	Shares (in thousands)	Weighted Average Grant Date Fair Value (per share)

Nonvested at December 31, 2022	122	$5.53	8	$39.55
Granted	—	—	—	—
Vested	(104)	$5.53	—	—
Forfeited/Cancelled	(18)	$5.53	—	—
Nonvested at December 31, 2023	—	—	8	$39.55
Granted	—	—	—	—
Vested	—	—	(8)	$39.55
Forfeited/Cancelled	—	—	—	—
Nonvested at December 31, 2024 and 2025	—	—	—	—

Restricted Stock (Performance Condition)

A summary of restricted stock with performance-based vesting granted under the 2014 Plan is as follows:


	2022 Award		2023 Award		2024 Award		2025 Award
	Shares (in thousands)	Weighted Average Grant Date Fair Value (per share)	Shares (in thousands)	Weighted Average Grant Date Fair Value (per share)	Shares (in thousands)	Weighted Average Grant Date Fair Value (per share)	Shares (in thousands)	Weighted Average Grant Date Fair Value (per share)

Nonvested at December 31, 2022	22	$33.70	—	—	—	—	—	—
Granted	—	—	17	$42.70	—	—	—	—
Vested	—	—	—	—	—	—	—	—
Forfeited	(5)	$33.70	(6)	$42.70	—	—	—	—
Nonvested at December 31, 2023	17	$33.70	11	$42.70	—	—	—	—
Granted	—	—	—	—	24	$38.67	—	—
Vested	—	—	—	—	—	—	—	—
Forfeited	—	—	—	—	—	—	—	—
Nonvested at December 31, 2024	17	$33.70	11	$42.70	24	$38.67	—	—
Granted	—	—	—	—	—	—	12	$84.40
Vested	(17)	$33.70	(2)	$42.70	(3)	$38.67	(1)	$84.40
Forfeited	—	—	(1)	$42.70	(4)	$38.67	(2)	$84.40
Nonvested at December 31, 2025	—	—	8	$42.70	17	$38.67	9	$84.40

Commitments and Contingencies	12 Months Ended
Commitments and Contingencies	Dec. 31, 2025
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	COMMITMENTS AND CONTINGENCIES Commitments under SWU Purchase Agreements TENEX The Russian government-owned entity TENEX, is a major supplier of SWU to the Company. Under the 2011 TENEX Supply Contract, the Company purchases SWU contained in LEU received from TENEX, and the Company delivers natural uranium hexafluoride to TENEX for the LEU’s uranium component. The LEU that the Company obtains from TENEX is subject to quotas and other restrictions applicable to commercial Russian LEU. Further, the ability of the Company or TENEX to perform under the TENEX Supply Contract is vulnerable to (i) sanctions or restrictions that have been or might be imposed by Russia, the United States, or other countries as a result of the war in Ukraine, or otherwise; (ii) customers and other parties who may object to receiving or handling Russian LEU or SWU; or (iii) suppliers and service providers seeking to limit their involvement with business related to Russia. The TENEX Supply Contract originally was signed with commitments through 2022, but was modified in 2015 to give the Company the right to reschedule certain original commitments of SWU quantities into the period 2023 and beyond, in return for the purchase of additional SWU quantities in those years. The Company has exercised this right to reschedule SWU quantities in each year through December 31, 2023. As a result of exercising this right, the Company has purchase commitments that could extend to 2028. The TENEX Supply Contract provides that the Company must pay for all SWU in its minimum purchase obligation each year, even if it fails to submit orders for such SWU. In such a case, the Company would pay for the SWU, but have to take the unordered SWU in the following year. Pricing terms for SWU under the TENEX Supply Contract are based on a combination of market-related price points and other factors. This formula was subject to an adjustment at the end of 2018 that reduced the unit costs of SWU under this contract in 2019 and for the duration of the contract. Orano In 2018, the Company entered into the Orano Supply Agreement with a French company, Orano Cycle, for the long-term supply of SWU contained in LEU. The Orano Supply Agreement subsequently was assigned by Orano Cycle to its affiliate, Orano CE. Under the amended Orano Supply Agreement, the supply of SWU runs through 2030. The Orano Supply Agreement provides significant flexibility to adjust purchase volumes, subject to annual minimums and maximums in fixed amounts that vary year by year. The pricing for the SWU purchased by the Company is determined by a formula that uses a combination of market-related price points and other factors and is subject to certain floors and ceilings. Engineering, Procurement and Construction Contract On February 9, 2026, ACO entered into an engineering, procurement and construction contract with Fluor Federal Services, Inc. (“Fluor”), a third-party contractor, for the commercial expansion and deployment of LEU and HALEU production capability at the American Centrifuge Plant (ACP) in Piketon, Ohio. The contract provides for compensation on a time and materials basis at agreed labor rates and extends until the completion of performance. Under the contract, Fluor’s services will include design, engineering, procurement, construction and construction management, and related services to support full commercial HALEU and LEU operations. Fluor will be paid a reimbursable amount for all costs incurred in connection with the relevant work (such as labor, equipment, materials, and other direct costs), plus other agreed upon margins. ACO will fund the services by establishing a zero-balance and escrow general disbursement account that will be administered in accordance with agreed-upon procedures. ACO will authorize funds incrementally in accordance with stage gates and Fluor’s performance is limited by the authorized funding. The Company has not incurred any costs under the contract and has not deposited any funds into the escrow account. The total price paid to the Contractor will depend on the scope of the services authorized by the ACO, in accordance with the terms of the contract. The contract may be terminated or suspended by ACO or Fluor for cause, or by ACO for convenience, in which case Fluor is entitled to compensation for services and any applicable fee provided through termination. In the event of cancellation by ACO for reasons other than default, Fluor is also entitled to a cancellation fee in the initial amount of $24.0 million on the contract effective date, subsequently decreasing by $2.0 million per month until reaching $0. Milestones Under the 2002 DOE-USEC Agreement The Company’s predecessor, USEC Inc., and the DOE signed the 2002 DOE-USEC Agreement dated June 17, 2002, pursuant to which the parties made long-term commitments directed at resolving issues related to the stability and security of the domestic uranium enrichment industry. This agreement requires Centrus to develop, demonstrate and deploy advanced enrichment technology in accordance with milestones, including the deployment of a commercial American Centrifuge Plant, and provides for remedies in the event of a failure to meet a milestone under certain circumstances, including terminating the agreement, revoking Centrus’ access to the DOE’s centrifuge technology that is required for the success of the Company’s ongoing work with the American Centrifuge technology, requiring Centrus to transfer certain rights in the American Centrifuge technology and facilities to the DOE, and requiring Centrus to reimburse the DOE for certain costs associated with the American Centrifuge technology. The agreement provides further that if a delaying event beyond the control and without the fault or negligence of Centrus occurs that could affect Centrus’ ability to meet the American Centrifuge Plant milestone under the 2002 DOE-USEC Agreement, the DOE and the Company will jointly meet to discuss in good faith possible adjustments to the milestones as appropriate to accommodate the delaying event. In 2014, the 2002 DOE-USEC Agreement and other agreements between the Company and the DOE were assumed by Centrus subject to an express reservation of all rights, remedies and defenses by the DOE and the Company under those agreements. The DOE and the Company have agreed that all rights, remedies and defenses of the parties with respect to any missed milestones and all other matters under the 2002 DOE-USEC Agreement continue to be preserved, and that the time limits for each party to respond to any missed milestones continue to be tolled. Legal Matters From time to time, the Company is involved in various pending legal proceedings, including the pending legal proceedings described below. In 1993, USEC-Government entered into a lease for the Paducah and Portsmouth GDPs with the DOE. As part of that lease, the DOE and USEC-Government also entered into a Power MOU regarding power purchase agreements between DOE and the providers of power to the GDPs. Under the Power MOU, the DOE and USEC-Government agreed upon the allocation of rights and liabilities under the power purchase agreements. In 1998, USEC-Government was privatized and became Enrichment Corp., now a principal subsidiary of the Company. Pursuant to legislation authorizing the privatization, the lease for the GDPs, which included the Power MOU as an Appendix, was transferred to Enrichment Corp., and Enrichment Corp. was given the right to purchase power from the DOE. The Paducah GDP was shut down in 2013 and deleased by Enrichment Corp. in 2014. On August 4, 2021, the DOE informally informed Enrichment Corp. that the Joppa Power Plant, which had supplied power to the Paducah GDP, was planned to undergo D&D. According to the DOE, the power purchase agreement with Electric Energy Inc. requires the DOE to pay for a portion of the D&D costs of the Joppa Power Plant and the DOE has asserted that a portion of the DOE’s liability is the responsibility of Enrichment Corp. under the Power MOU in the amount of approximately $9.6 million. The Company is assessing the DOE’s assertions including whether all or a portion of any such potential liability had been previously settled. The Company has not formed an opinion on the merits of DOE’s claim nor is it able to estimate its potential liability, if any, for such claim and no expense or liability has been accrued. On May 26, 2019, the Company, Enrichment Corp., and six other DOE contractors who have operated facilities at the Portsmouth GDP (including, in the case of the Company, the American Centrifuge Plant site located on the premises) were named as defendants in a class action complaint filed by Ursula McGlone, Jason McGlone, Julia Dunham, and K.D. and C.D., minor children by and through their parent and natural guardian Julia Dunham (collectively, the “McGlone Plaintiffs”) in the U.S. District Court in the Southern District of Ohio, Eastern Division. The complaint seeks damages for alleged off-site contamination allegedly resulting from activities on the Portsmouth GDP site. The McGlone Plaintiffs are seeking to represent a class of (i) all current or former residents within a seven-mile radius of the Portsmouth GDP site and (ii) all students and their parents at the Zahn’s Corner Middle School from 1993-present. The complaint was amended on December 10, 2019 and on January 10, 2020 to add additional plaintiffs and new claims. On July 31, 2020, the court granted in part and denied in part the defendants’ motion to dismiss the case. The court dismissed ten of the fifteen claims and allowed the remaining claims to proceed to the next stage of the litigation process. On August 18, 2020, the McGlone Plaintiffs filed a motion for leave to file a third amended complaint and notice of dismissal of three of the individual plaintiffs. On March 18, 2021, the McGlone Plaintiffs filed a motion for leave to file a fourth amended complaint to add new plaintiffs and allegations. On March 19, 2021, the court granted the McGlone Plaintiffs’ motion for leave to amend the complaint to include Price-Anderson Act and eight other state law claims. On May 24, 2021, the Company, Enrichment Corp., and the other defendants filed their motion to dismiss the complaint. On March 31, 2022, the court granted the Company’s motion in part by dismissing claims brought on behalf of the minor children but allowed the other claims to proceed. As such, the discovery stage of litigation is continuing. On April 28, 2022, the Company, Enrichment Corp., and the other defendants filed their answer to the fourth amended complaint. The Company believes that its operations at the Portsmouth GDP site were fully in compliance with the NRC’s regulations. Further, the Company and Enrichment Corp. believe that any such liability should be indemnified under the Price-Anderson Act. The Company and Enrichment Corp. have provided notifications to DOE required to invoke indemnification under the Price-Anderson Act and other contractual provisions. On June 8, 2022, the Company, Enrichment Corp., and six other DOE contractors who operated facilities at the Portsmouth GDP were named as defendants in a complaint filed by Brad Allen Lykins, as administrator of the estate of Braden Aaron Lee Lykins in the U.S. District Court in the Southern District of Ohio, Eastern Division (the “Lykins Complaint”). In March 2021, Brayden Lykins, who was thirteen years old, passed away from leukemia. The complaint alleges that the defendants released radiation into the environment in violation of the Price-Anderson Act causing Mr. Lykins’s death and seeks monetary damages. On August 30, 2022, the Company, Enrichment Corp., and the other defendants filed their answer to the Lykins Complaint. The Company and Enrichment Corp. believe that their operations at the Portsmouth GDP site were fully in compliance with the NRC’s regulations. Further, the Company and Enrichment Corp. believe that any such liability should be indemnified by DOE under the Price-Anderson Act. The Company and Enrichment Corp. have provided notifications to the DOE required to invoke indemnification under the Price-Anderson Act and other contractual provisions. On March 8, 2023, the Company, Enrichment Corp., and six other DOE contractors that operated facilities at the Portsmouth GDP were named as defendants in a complaint filed by Christian Rose in the U.S. District Court in the Southern District of Ohio, Eastern Division (the “Rose Complaint”). Christian Rose was diagnosed with cancer in June 2022. Although Mr. Rose is an adult, he attended the Zahn’s Corner Middle School, which was closed a few years ago due to contamination and is in the vicinity of the plant. The Rose Complaint alleges that the defendants released radiation into the environment in violation of the Price-Anderson Act causing death – even though the plaintiff is still alive – and seeks monetary damages in the nature of past and future medical expenses, pain and suffering and punitive damages, among others. On May 15, 2023, the Company, Enrichment Corp. and the other defendants filed their answers to the Rose Complaint. The Company and Enrichment Corp. believe that their operations at the Portsmouth GDP site were fully in compliance with the NRC’s regulations. Further, the Company and Enrichment Corp. believe that any such liability should be indemnified under the Price-Anderson Act. The Company and Enrichment Corp. have provided notifications to the DOE required to invoke indemnification under the Price-Anderson Act and other contractual provisions. On November 27, 2023, the Company, Enrichment Corp. and six other DOE contractors who operated facilities at the Portsmouth GDP were named as defendants in a complaint filed by Joshua Shaw in the U.S. District Court in the Southern District of Ohio, Eastern Division (the “Shaw Complaint”). Joshua Shaw was diagnosed with Acute Myeloid Leukemia (“AML”) in August 2008 and after going through chemotherapy continues to experience aftereffects of AML, including anxiety and fatigue. The Shaw Complaint alleges that the defendants released radiation into the environment exposing Mr. Shaw to radiation in violation of the Price-Anderson Act and causing Mr. Shaw’s AML and other injuries. Mr. Shaw seeks monetary damages in nature of past and future medical expenses for treatment and care, pain and suffering and punitive damages, among others. On February 26, 2024, the Company, Enrichment Corp. and the other defendants filed their motion to dismiss the Shaw Complaint, which was thereafter amended on March 14, 2024. On March 28, 2024, the Company, Enrichment Corp. and the other defendants filed their motion to dismiss the amended Shaw Complaint, and, on May 31, 2024 filed their reply to support their motion to dismiss the amended Shaw Complaint. On March 31, 2025, the Court did not grant the Company’s motion to dismiss the Complaint for being time-barred. On April 14, 2025, the Company, Enrichment Corp., and the other defendants filed their answer to the amended complaint. The Company and Enrichment Corp. believe that their operations at the Portsmouth GDP site were fully in compliance with the NRC’s regulations. Further, the Company and Enrichment Corp. believe that any such liability should be indemnified under the Price-Anderson Act. The Company and Enrichment Corp. have provided notifications to the DOE required to invoke indemnification under the Price-Anderson Act and other contractual provisions. On November 24, 2025, the Company, Enrichment Corp., and five other DOE contractors who operated facilities at the Portsmouth GDP were named as defendants in a complaint filed by Julia Dunham in the U.S. District Court in the Southern District of Ohio, Eastern Division (“Dunham Complaint”). In November 2015, Cheyenne Dunham, who was nineteen years old, passed away due to complications following a bone marrow transplant. The complaint alleges that the defendants released radiation into the environment in violation of the Price-Anderson Act causing Ms. Dunham’s death and seeks monetary damages. The Company and Enrichment Corp. believe that their operations at the Portsmouth GDP site were fully in compliance with the NRC’s regulations. Further, the Company and Enrichment Corp. believe that any such liability should be indemnified by DOE under the Price-Anderson Act. The Company and Enrichment Corp. have provided notifications to the DOE required to invoke indemnification under the Price-Anderson Act and other contractual provisions. Centrus is subject to various legal proceedings and claims, either asserted or unasserted, which arise in the ordinary course of business. While the outcome of these claims cannot be predicted with certainty, Centrus does not believe that the outcome of any of these legal matters, individually and in the aggregate, will have a material adverse effect on its cash flows, results of operations or financial condition.

Debt Schedule of Debt (Tables)

12 Months Ended

Dec. 31, 2025

Debt Disclosure [Abstract]

Schedule of Debt

A summary of debt follows (in millions):


		December 31, 2025				December 31, 2024
	Maturity	Current		Long-Term		Current		Long-Term

8.25% Notes:	Feb. 2027
Principal		$	—	$	—	$	—	$	74.3
Interest		—		—		6.1		9.2
2.25% Convertible Notes:	Nov. 2030
Principal		—		402.5		—		402.5
0% Convertible Notes:	Aug. 2032
Principal		—		805.0		—		—
Total		$	—	$	1,207.5	$	6.1	$	486.0

Income Taxes (Unrecognized Tax Benefits) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Liability for Uncertain Tax Positions, Noncurrent	$ 3.6	$ 3.4	$ 2.9
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions	0.2	0.5
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions	$ 0.0	$ 0.0

Cash, Cash Equivalents and Restricted Cash (Tables)

12 Months Ended

Dec. 31, 2025

Cash, Cash Equivalents and Restricted Cash [Abstract]

Schedule of Cash and Cash Equivalents


	December 31,
	2025		2024
Cash and cash equivalents	$	1,957.2	$	671.4
Deposits for financial assurance - current (a)	0.2		30.0
Deposits for financial assurance - noncurrent	2.7		2.6
Total cash, cash equivalents and restricted cash	$	1,960.1	$	704.0

(a) Deposits for financial assurance - current is included within Other Current Assets in the Consolidated Balance Sheets.

Schedule of Restricted Cash and Cash Equivalents

The following table provides additional detail regarding the Company’s deposits for financial assurance (in millions):


	December 31, 2025				December 31, 2024
	Current		Long-Term		Current		Long-Term
Collateral for Inventory Loans	$	—	$	—	$	29.8	$	—
Workers’ Compensation	—		2.6		—		2.5
Other	0.2		0.1		0.2		0.1
Total deposits for financial assurance	$	0.2	$	2.7	$	30.0	$	2.6

Segment Information (Narrative) (Details) - numberOfSegments	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Number of Operating Segments	2
Number of Reportable Segments	2
Ten Largest Customers \| Revenue Benchmark \| Customer Concentration Risk
Revenue	77.00%	75.00%	79.00%
1st Customer over 10% \| Revenue Benchmark \| Customer Concentration Risk
Revenue	16.00%	20.00%	17.00%
2nd Customer over 10% \| Revenue Benchmark \| Customer Concentration Risk
Revenue	15.00%	13.00%	15.00%
3rd Customer over 10% \| Revenue Benchmark \| Customer Concentration Risk
Revenue	13.00%		13.00%
4th Customer over 10% \| Revenue Benchmark \| Customer Concentration Risk
Revenue	11.00%
Technical Solutions Segment [Member]
Revenue from first customer over 10 percent	23.00%	21.00%	16.00%

Intangible Assets Schedule of Intangible Asset Amortization (Details) $ in Millions	Dec. 31, 2025 USD ($)
Intangible Assets Disclosure [Abstract]
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	$ 6.1
Finite-Lived Intangible Assets, Amortization Expense, Year Two	5.8
Finite-Lived Intangible Assets, Amortization Expense, Year Three	5.9
Finite-Lived Intangible Assets, Amortization Expense, Year Four	3.4
Finite-Lived Intangible Assets, Amortization Expense, Year Five	0.0
Finite-Lived Intangible Assets, Amortization Expense, after Year Five	0.0
Finite-Lived Intangible Assets, Net	$ 21.2

Revenue and Contracts with Customers Accounts Receivable (Schedule of Accounts Receivable) (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Billed Contracts Receivable	$ 19.9	$ 69.8
Unbilled Receivables, Current	10.8	10.2
Accounts receivable, net	$ 30.7	$ 80.0

Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2025

Equity, Attributable to Parent [Abstract]

Schedule of Stock by Class [Table Text Block]

Changes in the number of shares outstanding are as follows:


	Common Stock, Class A	Common Stock, Class B

Balance at December 31, 2022	13,919,646	719,200
Issuance under public offering	722,568	—

Issuance of previously vested restricted stock units	45,437	—
Notional stock units paid in shares	119,604	—
Common stock and warrant issued in exchange for preferred stock	149,179	—

Balance at December 31, 2023	14,956,434	719,200
Issuance under public offering	933,987	—
Common stock issued for options exercised	96,000	—
Issuance of previously vested restricted stock units	45,311	—
Notional stock units paid in shares	14,184	—


Balance at December 31, 2024	16,045,916	719,200
Issuance under public offering	2,866,261	—

Issuance of previously vested restricted stock units	31,637	—
Common stock issued under equity-based compensation plan	1,551	—


Balance at December 31, 2025	18,945,365	719,200

- Definition

Tabular disclosure of an entity's stock, including par or stated value per share, number and dollar amount of share subscriptions, shares authorized, shares issued, shares outstanding, number and dollar amount of shares held in an employee trust, dividend per share, total dividends, share conversion features, par value plus additional paid in capital, the value of treasury stock and other information necessary to a fair presentation, and EPS information. Stock by class includes common, convertible, and preferred stocks which are not redeemable or redeemable solely at the option of the issuer. Includes preferred stock with redemption features that are solely within the control of the issuer and mandatorily redeemable stock if redemption is required to occur only upon liquidation or termination of the reporting entity. If more than one issue is outstanding, state the title of each issue and the corresponding dollar amount; dollar amount of any shares subscribed but unissued and the deduction of subscriptions receivable there from; number of shares authorized, issued, and outstanding.

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+ Details

Schedule of Intangible Assets (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets, gross	$ 123.5	$ 123.5
Accumulated intangible asset amortization	(102.3)	(93.9)
Amortizable intangible assets, net	$ 21.2	29.6
Average useful life of finite-lived intangible assets	15 years
Contract-Based Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets, gross	$ 54.6	54.6
Accumulated intangible asset amortization	(50.6)	(46.8)
Amortizable intangible assets, net	4.0	7.8
Customer-Related Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets, gross	68.9	68.9
Accumulated intangible asset amortization	(51.7)	(47.1)
Amortizable intangible assets, net	$ 17.2	$ 21.8

- Definition

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+ Details

Inventories (Tables)

12 Months Ended

Dec. 31, 2025

Inventory, Net [Abstract]

Schedule of Inventories

Components of inventories are as follows (in millions):


	December 31, 2025						December 31, 2024
	Current Assets		Current Liabilities (a)		Inventories, Net		Current Assets		Current Liabilities (a)		Inventories, Net

Separative work units	$	21.1	$	17.8	$	3.3	$	5.0	$	2.5	$	2.5
Uranium	301.8		174.9		126.9		156.6		13.7		142.9
Total	$	322.9	$	192.7	$	130.2	$	161.6	$	16.2	$	145.4

(a)This includes inventories owed to suppliers for advances of uranium.

Net Income Per Share (Narrative) (Details) - $ / shares	12 Months Ended
Net Income Per Share (Narrative) (Details) - $ / shares	Dec. 31, 2025	Dec. 31, 2023
Conversion of Stock, Shares Converted	0
Common Class A [Member]
Conversion of Stock, Shares Converted		149,179
Series B Preferred Stock [Member]
Preferred Stock, Par Value Per Share	$ 1.00

Property, Plant and Equipment (Tables) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 36.2	$ 14.7
Property, Plant and Equipment, Additions	21.5
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(6.7)	(5.3)
Accumulated Depreciation, Depletion and Amortization, Sale or Disposal of Property, Plant and Equipment	(1.4)
Property, Plant And Equipment, Net Capital Expenditures	20.1
Property, Plant and Equipment, Net	29.5	9.4
Depreciation	(1.4)	(1.0)	$ (0.7)
Land [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	1.2	1.2
Property, Plant and Equipment, Additions	0.0
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	6.8	5.6
Property, Plant and Equipment, Additions	1.2
Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	6.6	5.0
Property, Plant and Equipment, Additions	1.6
Other Capitalized Property Plant and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	21.6	$ 2.9
Property, Plant and Equipment, Additions	$ 18.7

Income Taxes (Rate Reconciliation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Federal Statutory Income Tax Rate, Percent	21.00%	21.00%	21.00%
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount	$ 17,900	$ 15,300	$ 17,700
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount	$ (300)	$ (300)	0
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent	(12.00%)	(23.00%)
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount	$ 200	$ (200)	$ 400
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent	0.00%	0.00%	0.00%
Effective Income Tax Rate Reconciliation, State Income Tax Expense, Net of Federal Benefit, Percent	0.00%	0.00%	0.00%
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount	$ (10,200)	$ (16,600)	$ (31,700)
Effective Income Tax Rate Reconciliation, Uncertain Tax Positions	0.00%	1.00%	1.00%
Provision (benefit) for income taxes	$ 8,100	$ (200)	$ 100
Effective Income Tax Rate Reconciliation, Tax Contingency, Amount	$ 200	$ 700	$ 600
Effective Income Tax Rate Reconciliation, Percent	10.00%	0.00%	0.00%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Amount	$ 300	$ 900	$ 800
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-Based Payment Arrangement, Percent	1.00%	1.00%	1.00%
Domestic Tax Jurisdiction [Member]
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent			(23.00%)
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount			$ (19,400)
State and Local Jurisdiction [Member]
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount			12,100
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount			$ 12,300

Accounts Payable and Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2025

Accounts Payable and Accrued Liabilities [Abstract]

Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]

Components of accounts payable and accrued liabilities follow (in millions):


	December 31,
	2025		2024

Trade payables	$	10.0	$	5.8
Compensation and employee benefits	16.6		19.9
Postretirement health and life benefit obligations - current	9.2		9.5


Accrued interest on 2.25% Convertible Notes	1.5		1.3
Operating lease liability	1.5		1.4
Other accrued liabilities	2.8		0.9
Total accounts payable and accrued liabilities	$	41.6	$	38.8

Pension and Postretirement Health and Life Benefits (Schedule of Defined Benefit Plan Amounts Recognized in Other Comprehensive Income) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Pension Plan, Defined Benefit [Member]
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax	$ 0.1	$ 0.0	$ (0.1)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax	0.1	0.0	(0.1)
Total recognized in net periodic benefit costs (income) and other comprehensive income (loss), pre-tax	0.6	(17.7)	(26.6)
Other Postretirement Benefits Plan [Member]
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax	(1.6)	(1.7)	(1.8)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax	(1.6)	(1.7)	(1.8)
Total recognized in net periodic benefit costs (income) and other comprehensive income (loss), pre-tax	$ 5.3	$ 2.7	$ 4.4

- Definition

Amount, before tax, after reclassification adjustment, of (increase) decrease in accumulated other comprehensive income for defined benefit plan.

+ References + Details

Revenue by Geographic Area (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Revenue	$ 448.7	$ 442.0	$ 320.2
United States
Revenue	335.3	253.4	281.6
Japan
Revenue	102.7	117.2	23.6
Other Foreign
Revenue	10.7	29.0	15.0
Foreign [Member]
Revenue	113.4	188.6	38.6
NETHERLANDS
Revenue	$ 0.0	$ 42.4	$ 0.0

- Definition

+ References

+ Details

Stockholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Class of Stock [Line Items]
Preferred Stock, Shares Authorized	20,000,000
Common Stock, Shares, Issued	19,664,565
Conversion of Stock, Shares Converted	0
Operating Loss Carryforwards	$ 505.2
Stock issued during period	$ 523.7	$ 55.2	$ 23.2
Common Class A [Member]
Class of Stock [Line Items]
Common Stock, Shares Authorized	70,000,000	70,000,000
Common Stock, Par or Stated Value Per Share	$ 0.10	$ 0.10
Common Stock, Shares, Issued	18,945,365	16,045,916
Stock Issued During Period, Shares, New Issues	2,866,261	933,987	722,568
Stock Issued During Period, Value, Gross	$ 533.6	$ 56.7	$ 24.4
Stock Issued During Period, Value, Net	524.7	55.1	23.4
Direct Costs of Stock Issuance	$ 1.0	$ 0.3	$ 0.2
Conversion of Stock, Shares Converted			149,179
Common Class B [Member]
Class of Stock [Line Items]
Common Stock, Shares Authorized	30,000,000	30,000,000
Common Stock, Par or Stated Value Per Share	$ 0.10	$ 0.10
Common Stock, Shares, Issued	719,200	719,200
Preferred Series B [Member]
Class of Stock [Line Items]
Preferred stock	$ 0.0	$ 0.0

Subsequent Event Narrative (Details) - USD ($) $ in Millions	Jan. 17, 2026	Jan. 05, 2026	Dec. 31, 2025	Dec. 31, 2024
Accounts receivable, net			$ 30.7	$ 80.0
Payables under SWU purchase agreements			18.5	$ 29.5
HALEU Demo Contract
Contract Value			$ 173.0
Subsequent Event \| TENEX
Accounts receivable, net	$ 1.7
Payables under SWU purchase agreements	2.7
Payable Under Purchase Agreement	$ 1.0
Subsequent Event \| HALEU Demo Contract
Contract Value, Award Task		$ 900.0
Contract Value		170.0
Subsequent Event \| HALEU Enrichment Contract
Contract Value, Award Task		900.0
Contract Value		$ 170.0

Pension and Postretirement Health and Life Benefits (Tables)

12 Months Ended

Dec. 31, 2025

Defined Benefit Plan Disclosure [Line Items]

Schedule of Changes in Projected Benefit Obligations [Table Text Block]

Changes in the projected benefit obligations and plan assets and the funded status of the plans follow:


	Defined Benefit Pension Plans				Postretirement Health and Life Benefit Plans
(in millions)	Year Ended December 31,				Year Ended December 31,
	2025		2024		2025		2024
Changes in Benefit Obligations:
Obligations at beginning of period	$	30.6	$	308.2	$	84.1	$	91.3
Actuarial losses (gains), net	0.9		(21.9)		2.5		—
Service costs	0.4		2.1		—		—
Interest costs	1.7		7.6		4.5		4.5
Benefits paid from plan assets	(1.9)		(24.6)		(9.7)		(11.7)
Benefits paid from Company assets	—		(0.4)		—		—

Settlements	—		(238.8)		—		—
Administrative expenses paid	(0.7)		(1.6)		—		—
Obligations at end of period	31.0		30.6		81.4		84.1
Changes in Plan Assets:
Fair value of plan assets at beginning of period	31.0		290.5		—		—
Actual return on plan assets	2.4		5.3		—		—
Company contributions	0.5		0.6		9.7		11.7
Benefits paid	(1.9)		(25.0)		(9.7)		(11.7)
Settlements	—		(238.8)		—		—
Administrative expenses paid	(0.7)		(1.6)		—		—
Fair value of plan assets at end of period	31.3		31.0		—		—
Funded (Unfunded) status at end of period	$	0.3	$	0.4	$	(81.4)	$	(84.1)

Amounts recognized in assets and liabilities:
Noncurrent assets	$	4.6	$	4.8	$	—	$	—
Current liabilities	(1.3)		(0.4)		(9.2)		(9.5)
Noncurrent liabilities	(3.0)		(4.0)		(72.2)		(74.6)
	$	0.3	$	0.4	$	(81.4)	$	(84.1)
Amounts in accumulated other comprehensive income (loss), pre-tax:
Prior service credit	$	0.1	$	—	$	(1.6)	$	(1.7)

Schedule of Net Benefit Costs [Table Text Block]

Components of Net Periodic Benefit Costs and Other Amounts Recognized in Other Comprehensive Income

The Company reports service costs for its defined benefit pension plans and its postretirement health and life benefit plans in Cost of Sales and Selling, General and Administrative Expenses. The remaining components of net periodic benefit (credits) costs are reported as Nonoperating Components of Net Periodic Benefit Income.


	Defined Benefit Pension Plans						Postretirement Health and Life Benefit Plans
(in millions)	Year Ended December 31,						Year Ended December 31,
	2025		2024		2023		2025		2024		2023
Net Periodic Benefit (Credits) Costs
Service costs	$	0.4	$	2.1	$	2.9	$	—	$	—	$	—
Interest costs	1.7		7.6		27.8		4.5		4.5		5.0
Expected return on plan assets	(1.9)		(9.4)		(31.0)		—		—		(0.1)
Amortization of prior service credits, net	(0.1)		(0.1)		(0.2)		(0.1)		(0.1)		(0.1)
Actuarial losses (gains), net	0.4		(17.9)		(26.0)		2.5		—		1.4
Net periodic benefit (credits) costs	$	0.5	$	(17.7)	$	(26.5)	$	6.9	$	4.4	$	6.2


Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Loss)
Amortization of prior service costs, net	$	—	$	—	$	—	$	(1.6)	$	(1.7)	$	(1.8)
Prior service credit	0.1		—		(0.1)		—		—		—
Total recognized in other comprehensive loss, pre-tax	$	0.1	$	—	$	(0.1)	$	(1.6)	$	(1.7)	$	(1.8)
Total recognized in net periodic benefit costs (income) and other comprehensive income (loss), pre-tax	$	0.6	$	(17.7)	$	(26.6)	$	5.3	$	2.7	$	4.4

Schedule of Assumptions Used [Table Text Block]

Assumptions Used to Determine Net Periodic Benefit Costs


	Defined Benefit Pension Plans			Postretirement Health and Life Benefit Plans
	Year Ended December 31,			Year Ended December 31,
	2025	2024	2023	2025	2024	2023

Discount rate	5.6%	5.7%	5.2%	5.4%	5.6%	5.2%
Expected return on plan assets	6.3%	6.8%	6.8%	—%	—%	4.0%

Schedule of Health Care Cost Trend Rates [Table Text Block]

Healthcare cost trend rates used to measure postretirement health benefit obligations follow:


	December 31,
	2025	2024

Healthcare cost trend rate for the following year	9.0%	7.0%
Long-term rate that the healthcare cost trend rate gradually declines to	5%	5%
Year that the healthcare cost trend rate is expected to reach the long-term rate	2034	2033

Schedule of Allocation of Plan Assets [Table Text Block]

Plan assets are measured at fair value. Following are the plan investments as of December 31, 2025 and 2024, categorized by the fair value hierarchy levels described in Note 10, Fair Value:


	Defined Benefit Pension and Postretirement Health and Life Benefit Plans
(in millions)	Level 1				Level 2				Level 3				Total
	2025		2024		2025		2024		2025		2024		2025		2024

U.S. government securities	$	6.2	$	5.7	$	—	$	—	$	—	$	—	$	6.2	$	5.7
Corporate debt	—		—		—		—		—		—		—		—
Municipal bonds and non-U.S. government securities	18.7		17.7		—		—		—		—		18.7		17.7
Mutual funds	4.7		4.4		—		—		—		—		4.7		4.4

Fair value of investments by hierarchy level	$	29.6	$	27.8	$	—	$	—	$	—	$	—	29.6		27.8
Investments measured at NAV (a)													1.6		3.2
Accrued interest receivable													0.1		—

Plan assets													$	31.3	$	31.0

Schedule of Expected Benefit Payments [Table Text Block]

Estimated future benefit plan payments follow (in millions):


	Defined Benefit Pension Plans		Postretirement Health and Life Benefit Plans

2026	$	2.7	$	9.2
2027	2.0		8.6
2028	1.9		8.0
2029	2.3		7.6
2030	2.5		6.9
2031 to 2035	10.9		28.9

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (k)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-5

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-5

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-5

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (l)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-5

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-5

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (j)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-5

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (j)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-5

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (j)(4)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-5

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (j)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-5

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-5

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-5

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (c)(iv)(02)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-5

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (c)(ii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-5

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-7

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-5

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (m)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-5

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-5

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-5

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-5

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-5

+ Details

Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2025

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

A summary of changes in property, plant and equipment follows (in millions):


	December 31, 2024		Additions / (Depreciation)		December 31, 2025

Land	$	1.2	$	—	$	1.2
Buildings and leasehold improvements	5.6		1.2		6.8
Machinery and equipment	5.0		1.6		6.6
Construction in progress	2.9		18.7		21.6
Property, plant and equipment, gross	14.7		21.5		36.2
Accumulated depreciation	(5.3)		(1.4)		(6.7)
Property, plant and equipment, net	$	9.4	$	20.1	$	29.5

Cybersecurity Risk Management and Strategy Disclosure	12 Months Ended
Cybersecurity Risk Management and Strategy Disclosure	Dec. 31, 2025
Cybersecurity Risk Management, Strategy, and Governance [Line Items]
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]	Managing cybersecurity risk is critical to Centrus. Centrus expects that the complexity of cybersecurity incidents will continue to evolve. To assess the changing cyber environment, Centrus includes the evaluation of cybersecurity risk as part of its enterprise risk management process and provides periodic reporting to the Board. Assessed risks, whether general or specific to the Company, include operational risk, intellectual property theft, fraud, extortion, harm to employees or customers, violation of privacy laws and other litigation and legal risk, and reputational risk. This process includes evaluating risks from cybersecurity threats associated with the Company’s use of third-party service providers. To evaluate the sufficiency of Centrus’ cybersecurity posture, Centrus aligns with the National Institute of Standards and Technology Cybersecurity Framework. We periodically (i) have external experts complete assessments of Centrus’ cybersecurity posture, (ii) complete internal self-assessments and (iii) engage with third-party experts for assistance in monitoring, deterring, detecting, and addressing potential breaches. The results of any internal or external assessment are reported to senior management and the Board. Based on our monitoring and evaluations to date, including any previously identified cybersecurity incidents, there has not been, and there is not reasonably expected to be, a material effect on the Company’s business strategy, results of operations or financial condition, as a result of risks from cybersecurity threats.
Cybersecurity Risk Management Processes Integrated [Flag]	true
Cybersecurity Risk Management Processes Integrated [Text Block]	Managing cybersecurity risk is critical to Centrus. Centrus expects that the complexity of cybersecurity incidents will continue to evolve. To assess the changing cyber environment, Centrus includes the evaluation of cybersecurity risk as part of its enterprise risk management process and provides periodic reporting to the Board. Assessed risks, whether general or specific to the Company, include operational risk, intellectual property theft, fraud, extortion, harm to employees or customers, violation of privacy laws and other litigation and legal risk, and reputational risk.
Cybersecurity Risk Management Third Party Engaged [Flag]	true
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag]	true
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag]	false
Cybersecurity Risk Board of Directors Oversight [Text Block]	Centrus has policies, procedures, and strategies in place to assist in assessing and managing cybersecurity risks. To help safeguard the Company’s network and information maintained on that network, the Company maintains and executes a cybersecurity program designed to monitor, prevent, detect, mitigate, and remediate cyberattacks. The Board exercises its oversight of material risks from cybersecurity threats through its Cyber Risk Committee. Per its charter, the Board’s Cyber Risk Committee oversees the Company’s cybersecurity policies, procedures, and plans, including the quality and effectiveness of the related security, confidentiality, availability, recoverability, integrity, and disaster or incident response programs. It coordinates with the Audit and Finance Committee and the Board’s Technology, Competition and Regulatory Committee on cross disciplinary issues such as cybersecurity. The Chief Financial Officer has delegated the assessment and management of material risks from cybersecurity threats to management’s Cybersecurity Risk Committee which is comprised of members of senior management, including the Director, Information Technology. Management’s Cybersecurity Risk Committee regularly provides those delegating oversight with updates on the Company’s cybersecurity program which includes the current cybersecurity risk landscape and efforts employed to assist in preventing those risks, the Company’s cybersecurity policies and practices, the ongoing efforts to improve security, as well as the Company’s efforts regarding significant cybersecurity events. In addition, the Company maintains a cybersecurity incident response plan, which includes the Company’s processes for monitoring, preventing, detecting, mitigating, remediating, and recovery from cybersecurity incidents that is updated regularly. Disclosure with regard to a cybersecurity incident will be considered by management’s Cybersecurity Risk Committee, with material issues raised with our Board.
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]	The Board exercises its oversight of material risks from cybersecurity threats through its Cyber Risk Committee. Per its charter, the Board’s Cyber Risk Committee oversees the Company’s cybersecurity policies, procedures, and plans, including the quality and effectiveness of the related security, confidentiality, availability, recoverability, integrity, and disaster or incident response programs. It coordinates with the Audit and Finance Committee and the Board’s Technology, Competition and Regulatory Committee on cross disciplinary issues such as cybersecurity. The Chief Financial Officer has delegated the assessment and management of material risks from cybersecurity threats to management’s Cybersecurity Risk Committee which is comprised of members of senior management, including the Director, Information Technology. Management’s Cybersecurity Risk Committee regularly provides those delegating oversight with updates on the Company’s cybersecurity program which includes the current cybersecurity risk landscape and efforts employed to assist in preventing those risks, the Company’s cybersecurity policies and practices, the ongoing efforts to improve security, as well as the Company’s efforts regarding significant cybersecurity events. In addition, the Company maintains a cybersecurity incident response plan, which includes the Company’s processes for monitoring, preventing, detecting, mitigating, remediating, and recovery from cybersecurity incidents that is updated regularly. Disclosure with regard to a cybersecurity incident will be considered by management’s Cybersecurity Risk Committee, with material issues raised with our Board.
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]	The Board exercises its oversight of material risks from cybersecurity threats through its Cyber Risk Committee. Per its charter, the Board’s Cyber Risk Committee oversees the Company’s cybersecurity policies, procedures, and plans, including the quality and effectiveness of the related security, confidentiality, availability, recoverability, integrity, and disaster or incident response programs. It coordinates with the Audit and Finance Committee and the Board’s Technology, Competition and Regulatory Committee on cross disciplinary issues such as cybersecurity.
Cybersecurity Risk Role of Management [Text Block]	The Board exercises its oversight of material risks from cybersecurity threats through its Cyber Risk Committee. Per its charter, the Board’s Cyber Risk Committee oversees the Company’s cybersecurity policies, procedures, and plans, including the quality and effectiveness of the related security, confidentiality, availability, recoverability, integrity, and disaster or incident response programs. It coordinates with the Audit and Finance Committee and the Board’s Technology, Competition and Regulatory Committee on cross disciplinary issues such as cybersecurity.
Cybersecurity Risk Management Positions or Committees Responsible [Flag]	true
Cybersecurity Risk Management Positions or Committees Responsible [Text Block]	The Chief Financial Officer has delegated the assessment and management of material risks from cybersecurity threats to management’s Cybersecurity Risk Committee which is comprised of members of senior management, including the Director, Information Technology. Management’s Cybersecurity Risk Committee regularly provides those delegating oversight with updates on the Company’s cybersecurity program which includes the current cybersecurity risk landscape and efforts employed to assist in preventing those risks, the Company’s cybersecurity policies and practices, the ongoing efforts to improve security, as well as the Company’s efforts regarding significant cybersecurity events. In addition, the Company maintains a cybersecurity incident response plan, which includes the Company’s processes for monitoring, preventing, detecting, mitigating, remediating, and recovery from cybersecurity incidents that is updated regularly. Disclosure with regard to a cybersecurity incident will be considered by management’s Cybersecurity Risk Committee, with material issues raised with our Board.
Cybersecurity Risk Management Expertise of Management Responsible [Text Block]	The Chief Financial Officer has delegated the assessment and management of material risks from cybersecurity threats to management’s Cybersecurity Risk Committee which is comprised of members of senior management, including the Director, Information Technology. Management’s Cybersecurity Risk Committee regularly provides those delegating oversight with updates on the Company’s cybersecurity program which includes the current cybersecurity risk landscape and efforts employed to assist in preventing those risks, the Company’s cybersecurity policies and practices, the ongoing efforts to improve security, as well as the Company’s efforts regarding significant cybersecurity events. In addition, the Company maintains a cybersecurity incident response plan, which includes the Company’s processes for monitoring, preventing, detecting, mitigating, remediating, and recovery from cybersecurity incidents that is updated regularly.
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]	The Chief Financial Officer has delegated the assessment and management of material risks from cybersecurity threats to management’s Cybersecurity Risk Committee which is comprised of members of senior management, including the Director, Information Technology. Management’s Cybersecurity Risk Committee regularly provides those delegating oversight with updates on the Company’s cybersecurity program which includes the current cybersecurity risk landscape and efforts employed to assist in preventing those risks, the Company’s cybersecurity policies and practices, the ongoing efforts to improve security, as well as the Company’s efforts regarding significant cybersecurity events. In addition, the Company maintains a cybersecurity incident response plan, which includes the Company’s processes for monitoring, preventing, detecting, mitigating, remediating, and recovery from cybersecurity incidents that is updated regularly.
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]	true

Net Income Per Share (Schedule of Income Per Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Per Share Calculation [Line Items]
Net income	$ 77.8	$ 73.2	$ 84.4
Average number of shares outstanding, basic	17,967	16,309	15,212
Potentially dilutive shares related to stock options	58	64	289
Average number of shares outstanding, diluted	19,925	16,373	15,501
Net income (loss) per common share - basic	$ 4.33	$ 4.49	$ 5.55
Net income (loss) per common share - diluted	$ 3.90	$ 4.47	$ 5.44
0% Convertible Notes
Income Per Share Calculation [Line Items]
Antidilutive securities excluded from computation of earnings per share	951	0	0
0% Convertible Notes
Income Per Share Calculation [Line Items]
Potentially dilutive shares related to stock options	0	0	0
2.25% Convertible Notes
Income Per Share Calculation [Line Items]
Potentially dilutive shares related to stock options	1,900	0	0
Accumulated Deficit [Member]
Income Per Share Calculation [Line Items]
Net income	$ 77.8	$ 73.2	$ 84.4

Stockholders' Equity (Tables) (Details) - shares	12 Months Ended
Stockholders' Equity (Tables) (Details) - shares	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Class of Stock [Line Items]
Conversion of Stock, Shares Converted	0
Common Stock, Shares, Issued	19,664,565
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period		96,000	0
Common Class A [Member]
Class of Stock [Line Items]
Common Stock, Shares, Outstanding	18,945,365	16,045,916	14,956,434	13,919,646
Conversion of Stock, Shares Converted			(149,179)
Stock Issued During Period, Shares, New Issues	2,866,261	933,987	722,568
Common Stock, Shares, Issued	18,945,365	16,045,916
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period		96,000
Common Class B [Member]
Class of Stock [Line Items]
Common Stock, Shares, Outstanding	719,200	719,200	719,200	719,200
Common Stock, Shares, Issued	719,200	719,200
Restricted Stock Units (RSUs) [Member] \| Common Class A [Member]
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues	31,637	45,311	45,437
Notional Stock Units [Member] \| Common Class A [Member]
Class of Stock [Line Items]
Stock Issued During Period, Shares, New Issues	1,551	14,184	119,604

Revenue and Contracts with Customers (Tables)

12 Months Ended

Dec. 31, 2025

Revenue from Contract with Customer [Abstract]

Revenue from External Customers by Geographic Areas

The following table presents SWU and uranium revenue disaggregated by geographical region, including foreign countries representing 10% or more of revenue, based on the billing addresses of customers (in millions):


	Year Ended December 31,
	2025		2024		2023
United States	$	232.8	$	161.3	$	230.4
Foreign:

Japan	102.7		117.2		23.6
Netherlands	—		42.4		—
Other	10.7		29.0		15.0
Total foreign	113.4		188.6		38.6
Revenue - SWU and uranium	$	346.2	$	349.9	$	269.0

Revenue by customer location, including customers in a foreign country representing 10% or more of total revenue, follows (in millions):


	Year Ended December 31,
	2025		2024		2023

United States	$	335.3	$	253.4	$	281.6
Foreign:

Japan	102.7		117.2		23.6
Netherlands	—		42.4		—
Other	10.7		29.0		15.0
Total foreign	113.4		188.6		38.6
Total revenue	$	448.7	$	442.0	$	320.2

Contract with Customer, Asset and Liability

The following table presents changes in contract liability balances (in millions):


	December 31,
	2025		2024		Change



Deferred revenue - current	$	131.1	$	183.6	$	(52.5)
Advances from customers - current	$	—	$	32.8	$	(32.8)

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Cash Flows from Operating Activities
Net income	$ 77.8	$ 73.2	$ 84.4
Adjustments to reconcile net income (loss) to net cash (used in) operating activities:
Depreciation and amortization	9.9	10.8	7.1
Accrued loss on long-term contract	0.0	0.0	(20.0)
Increase (Decrease) in Deferred Income Taxes	(7.4)	0.7	1.6
Retirement benefit plans (gains) losses, net	2.9	(17.3)	(24.6)
Revaluation of inventory borrowing	3.6	2.1	7.4
Gain (Loss) on Extinguishment of Debt	(11.8)	0.0	0.0
Equity Related Compensation	5.8	1.5	2.3
Amortization of Debt Discount (Premium)	3.4	0.3	0.0
Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Other Item	0.1	(0.2)	(1.6)
Changes in operating assets and liabilities:
Accounts receivable – (increase) decrease	49.2	(30.5)	(11.3)
Increase (Decrease) in Inventories	(230.0)	101.0	(83.8)
Increase Decrease in Inventories Owed to Suppliers	176.5	(68.1)	23.5
Increase (Decrease) in Other Current Assets	2.2	2.4	14.9
Payables under SWU purchase agreements – increase (decrease)	(11.0)	(12.4)	(1.7)
Deferred revenue, net of deferred costs – increase (decrease)	(29.5)	(15.1)	12.1
Accounts payable and other liabilities – increase (decrease)	0.4	(1.4)	8.5
Pension and postretirement liabilities - increase (decrease)	(5.7)	(8.3)	(5.7)
Other, net	(0.2)	(0.3)	(0.8)
Net cash used in operating activities	51.0	37.0	9.1
Cash Flows Provided by Investing Activities
Capital expenditures	(19.7)	(4.1)	(1.6)
Cash Provided by (Used in) Investing Activity, Including Discontinued Operation	(19.7)	(4.1)	(1.6)
Cash Flows Used in Financing Activities
Proceeds from the sale of common stock, net	(523.7)	(54.7)	(23.2)
Repayments of Debt	(3.5)	(6.1)	(6.1)
Debt Instrument, Repaid, Principal	(74.3)	0.0	0.0
Exercise of stock options	0.0	0.4	0.0
Shares withheld for employee taxes	(3.4)	(0.6)	(3.0)
Proceeds from (Payment for) Other Financing Activity	0.0	0.0	(0.2)
Net cash used in financing activities	1,224.9	437.1	13.9
Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation	(0.1)	0.2	0.0
Decrease in cash, cash equivalents and restricted cash	1,256.1	470.2	21.4
Cash, cash equivalents and restricted cash, start of period	704.0	233.8	212.4
Cash, cash equivalents and restricted cash, end of period	1,960.1	704.0	233.8
Supplemental Cash Flow Information:
Proceeds from Convertible Debt	782.4	388.7	0.0
Income Tax Paid, Federal, after Refund Received	0.0	0.0	0.0
Income Tax Paid, State and Local, after Refund Received	0.7	0.7	0.0
Income Tax Paid, Foreign, after Refund Received	0.0	0.0	0.0
Interest Paid, Including Capitalized Interest, Operating and Investing Activities	8.9	0.0	0.0
MARYLAND
Supplemental Cash Flow Information:
Income Tax Paid, State and Local, after Refund Received	0.7	0.5	0.0
NEW YORK
Supplemental Cash Flow Information:
Income Tax Paid, State and Local, after Refund Received	0.0	0.2	0.0
Property, plant and equipment included in accounts payable and accrued liabilities
Supplemental Cash Flow Information:
Other Significant Noncash Transaction, Value of Consideration Given	2.0	0.2	0.9
Other Significant Noncash Transaction, Value of Consideration Given	(2.0)	(0.2)	(0.9)
Adjustment to Right of Use Lease due to Modification [Domain]
Supplemental Cash Flow Information:
Other Significant Noncash Transaction, Value of Consideration Given	1.3	0.0	(4.2)
Other Significant Noncash Transaction, Value of Consideration Given	(1.3)	0.0	4.2
Equity issuance costs included in accounts payable and accrued liabilities
Supplemental Cash Flow Information:
Other Significant Noncash Transaction, Value of Consideration Given	0.2	0.0	0.0
Other Significant Noncash Transaction, Value of Consideration Given	$ (0.2)	$ 0.0	$ 0.0

Compensation Related Costs, Retirement Benefits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Retirement Benefits [Abstract]
Special charges for workforce reductions and advisory costs	$ 0.8	$ 0.3	$ 3.6
Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration]	Selling, general and administrative

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References + Details

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Current Assets
Cash and cash equivalents	$ 1,957.2	$ 671.4
Accounts receivable, net	30.7	80.0
Inventories	322.9	161.6
Deferred costs associated with deferred revenue	40.9	63.9
Other current assets	11.9	38.3
Total current assets	2,363.6	1,015.2
Property, Plant and Equipment, Net	29.5	9.4
Deposits for surety bonds	2.7	2.6
Intangible assets	21.2	29.6
Deferred tax assets, net	21.9	29.3
Other long-term assets	7.0	7.3
Total Assets	2,445.9	1,093.4
Current Liabilities
Accounts payable and accrued liabilities	41.6	38.8
Payables under SWU purchase agreements	18.5	29.5
Inventories owed to customers and suppliers	192.7	16.2
Deferred revenue and advances from customers	131.1	216.4
Short-term inventory loan	38.9	39.8
Current debt	0.0	6.1
Total current liabilities	422.8	346.8
Long-term debt	1,174.8	472.5
Postretirement health and life benefit obligations	72.2	74.6
Pension benefit liabilities	3.0	4.0
Long-term SWU Loans	0.0	26.2
Other long-term liabilities	8.0	7.9
Total liabilities	$ 1,680.8	932.0
Stockholders' Deficit
Common Stock, Shares, Issued	19,664,565
Excess of capital over par value	$ 762.3	236.5
Accumulated deficit	1.5	(76.3)
Accumulated other comprehensive income (loss), net of tax	(0.7)	(0.5)
Total stockholders' deficit	765.1	161.4
Total Liabilities and Stockholders’ Equity (Deficit)	2,445.9	1,093.4
Preferred Series A [Member]
Stockholders' Deficit
Preferred stock	0.0	0.0
Preferred Series B [Member]
Stockholders' Deficit
Preferred stock	$ 0.0	$ 0.0
Common Class A [Member]
Stockholders' Deficit
Common Stock, Shares Authorized	70,000,000	70,000,000
Common Stock, Par or Stated Value Per Share	$ 0.10	$ 0.10
Common Stock, Shares, Issued	18,945,365	16,045,916
Common stock	$ 1.9	$ 1.6
Common Class B [Member]
Stockholders' Deficit
Common Stock, Shares Authorized	30,000,000	30,000,000
Common Stock, Par or Stated Value Per Share	$ 0.10	$ 0.10
Common Stock, Shares, Issued	719,200	719,200
Common stock	$ 0.1	$ 0.1
Series B Preferred Stock [Member]
Current Liabilities
Preferred Stock, Par Value Per Share	$ 1.00

Segment Information

12 Months Ended

Dec. 31, 2025

Segment Reporting Information, Revenue for Reportable Segment [Abstract]

Segment Information

REVENUE BY GEOGRAPHIC AREA, MAJOR CUSTOMERS AND SEGMENT INFORMATION

Revenue by customer location, including customers in a foreign country representing 10% or more of total revenue, follows (in millions):


	Year Ended December 31,
	2025		2024		2023

United States	$	335.3	$	253.4	$	281.6
Foreign:

Japan	102.7		117.2		23.6
Netherlands	—		42.4		—
Other	10.7		29.0		15.0
Total foreign	113.4		188.6		38.6
Total revenue	$	448.7	$	442.0	$	320.2

The U.S. government and its contractors, in the Company’s Technical Solutions segment, represented approximately 23% of total revenue for the year ended December 31, 2025, 21% for the year ended December 31, 2024, and 16% for the year ended December 31, 2023.

The ten largest customers in the Company’s LEU segment represented approximately 77% of total revenue for the year ended December 31, 2025. Revenue from Customers A, B, C, and D represented approximately 16%, 15%, 13%, and 11%, respectively, of total revenue for the year ended December 31, 2025.

The ten largest customers in the Company’s LEU segment represented approximately 75% of total revenue for the year ended December 31, 2024. Revenue from Customer A and Customer B represented approximately 20% and 13%, respectively, of total revenue for the year ended December 31, 2024.

The ten largest customers in the Company’s LEU segment represented approximately 79% of total revenue for the year ended December 31, 2023. Revenue from Customer A, Customer B, and Customer C represented approximately 17%, 15%, and 13%, respectively, of total revenue for the year ended December 31, 2023.

No other customer represented more than 10% of total revenue for the year ended December 31, 2025, 2024, or 2023.

Centrus has two operating and reportable segments: the LEU segment and the Technical Solutions segment. The reportable segments are business units that are managed separately and offer different products and services. The LEU segment includes sales of the SWU component of LEU, sales of both the SWU and uranium components of LEU, and sales of uranium. The Technical Solutions segment includes revenue and cost of sales for work that Centrus performs under the HALEU Demonstration and Operation Contracts. The Technical Solutions segment also includes advanced manufacturing, engineering and technical services provided by Centrus to public and private customers. Gross profit is Centrus’ measure for segment reporting. Net sales of the Company’s business segments in the following tables exclude intersegment sales as these activities are eliminated in consolidation and thus are not included in management’s evaluation of performance of each segment. Sales between segments are recorded as if the sales were to third parties, that is, at contractual or market prices at the time of the sale. Such intercompany operating income is eliminated in consolidation, so that the company’s total sales and total operating income reflect

only those transactions with external customers. Refer to Note 1, Summary of Significant Accounting Policies, and Note 2, Revenue and Contracts with Customers, for additional details on revenue for each segment.

The following table presents the Company’s segment information (in millions):


	Year Ended December 31,
	2025		2024		2023
Revenue
LEU segment:
Separative work units	$	298.7	$	246.8	$	208.2
Uranium	47.5		103.1		60.8
Intersegment revenue, eliminated on consolidation	12.4		6.4		5.0
Total	358.6		356.3		274.0
Technical Solutions segment	102.5		92.1		51.2
Total revenue	461.1		448.4		325.2
Elimination of intersegment revenue	(12.4)		(6.4)		(5.0)
Total revenue	$	448.7	$	442.0	$	320.2

Cost of Sales
LEU segment:
Separative work units and uranium	$	234.7	$	256.0	$	163.9
Intersegment cost of sales, eliminated on consolidation	10.7		2.1		3.0
Total	245.4		258.1		166.9
Technical Solutions Segment:
Technical Solutions	96.5		74.5		44.2
Total	96.5		74.5		44.2
Elimination of intersegment cost of sales	(10.7)		(2.1)		(3.0)
Total cost of sales	$	331.2	$	330.5	$	208.1

Segment Gross Profit
LEU segment:
LEU segment	$	111.5	$	93.9	$	105.1
Intersegment gross profit, eliminated on consolidation	1.7		4.3		2.0
Total	113.2		98.2		107.1
Technical Solutions segment:
Technical Solutions	6.0		17.6		7.0

Total	6.0		17.6		7.0
Elimination of intersegment gross profit	(1.7)		(4.3)		(2.0)
Gross profit	$	117.5	$	111.5	$	112.1

Reconciliation to Income before income taxes
Advanced technology costs	$	16.9	$	17.2	$	14.2
Selling, general and administrative	36.2		35.0		36.9
Equity-related compensation	5.8		1.5		2.3
Amortization of intangible assets	8.4		9.8		6.3

Nonoperating components of net periodic benefit loss (income)	6.8		(14.7)		(23.2)
Interest expense	14.0		2.7		1.3
Investment income	(44.7)		(12.9)		(8.7)
Extinguishment of long-term debt	(11.8)		—		—
Other income, net	—		(0.1)		(1.5)
Income before income taxes	$	85.9	$	73.0	$	84.5

The Company’s total assets are not presented for each reportable segment as they are not reviewed by, nor otherwise regularly provided to the chief operating decision maker (“CODM”), the CEO. The CODM uses revenue, cost of sales and gross profit to allocate resources (including personnel and financial or capital resources) for each segment, predominantly in the annual budget and quarterly financial review and forecasting process. The CODM considers budget-to-actual variances on a quarterly basis using revenue, cost of sales and gross profit when making decisions about allocating capital and personnel to the segments. Centrus’ long-term or long-lived assets, which include property, plant and equipment and other assets reported on the Consolidated Balance Sheet, were located in the United States as of December 31, 2025 and December 31, 2024.

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Income Taxes

12 Months Ended

Dec. 31, 2025

Income Tax Disclosure [Abstract]

Income Taxes

INCOME TAXES

Income Tax Expense (Benefit)

The income tax expense (benefit) is as follows (in millions):


	Year Ended December 31,
	2025		2024		2023
Current:
Federal	$	—	$	—	$	—
State and local	0.7		0.5		1.6
Foreign	—		—		—
	0.7		0.5		1.6
Deferred:
Federal (a)	8.1		(0.6)		(0.7)
State and local	(0.7)		(0.1)		(0.8)
Foreign	—		—		—
	7.4		(0.7)		(1.5)

Income tax expense (benefit)	$	8.1	$	(0.2)	$	0.1

(a) The income tax expense (benefit) for 2025, 2024, and 2023 includes the reversal of a portion of the federal valuation allowance on net deferred tax assets. See further discussion below.

Deferred Taxes


	December 31,
	2025		2024
Deferred tax assets:
Employee benefits costs	$	21.1	$	22.1
Inventory	19.0		27.2
Property, plant and equipment	178.1		178.2
Research and experimental expenditures	1.5		2.4
Net operating loss and credit carryforwards	159.0		165.2
Accrued expenses	0.5		0.4
Long-term debt and financing costs	0.9		3.8
Lease liability	0.5		0.5
Other	0.7		0.8
Deferred tax assets	381.3		400.6
Valuation allowance	(355.4)		(365.7)
Deferred tax assets, net of valuation allowance	$	25.9	$	34.9

Deferred tax liabilities:
Intangible assets	$	3.3	$	4.9
Lease asset	0.4		0.3
Prepaid expenses	0.3		0.4
Deferred tax liabilities	4.0		5.6
Deferred tax assets, net	$	21.9	$	29.3

The valuation allowance reduces the net deferred tax assets to their net realizable value. The ultimate realization of the net deferred tax assets is dependent upon generating sufficient taxable income in future years when deferred tax assets are recoverable or are expected to reverse.

In 2025, Centrus evaluated both positive and negative evidence that was objectively verifiable to determine the amount of the federal valuation allowance that was required on Centrus’ federal deferred tax assets. Centrus has visibility on a significant portion of revenue in the LEU segment for 2025 through 2030, primarily from its long-term sales contracts. Additionally, Centrus’ investment income forecast increased based upon increased liquidity. Centrus determined that the positive evidence of increased future investment income supported the release of the federal valuation allowance. However, because of the lack of objectively verifiable information in later years, it was determined that forecasted future income was not sufficient to realize all the deferred tax assets. Therefore, Centrus released ($10.2) million of the valuation allowance against its federal net deferred tax assets.

In 2024, the Company evaluated both positive and negative evidence that was objectively verifiable to determine the amount of the federal valuation allowance that was required on Centrus’ federal deferred tax assets. Centrus had visibility on a significant portion of revenue in the LEU segment for 2025 through 2026, primarily from its long-term sales contracts. Additionally, Centrus’ interest income forecast increased based upon increased liquidity. Centrus determined that the positive evidence of increased forecasted future income in the LEU segment based on existing sales backlog and supply contracts along with commodity market forward pricing indicators, and interest outlook supported the release of the federal valuation allowance. However, because of the lack of objectively verifiable information in later years, it was determined that forecasted future income was not sufficient to realize all the deferred tax assets. Therefore, Centrus released ($16.6) million of the valuation allowance against its federal net deferred tax assets.

In 2023, the Company evaluated both positive and negative evidence that was objectively verifiable to determine the amount of the federal valuation allowance that was required on Centrus’ federal deferred tax assets. Centrus had visibility on a significant portion of revenue in the LEU segment for 2024 through 2026, primarily from its long-term sales contracts. Centrus determined that the positive evidence of increased forecasted future income in the LEU segment based on existing sales backlog and supply contracts along with commodity market forward pricing indicators, supported the release of the federal valuation allowance. However, because of the lack of objectively verifiable information in later years, it was determined that forecasted future income was not sufficient to realize all the deferred tax assets. Therefore, Centrus recorded a partial release of its federal valuation allowance. In the third and fourth quarters of 2023, respectively, Centrus released ($7.7) million and ($11.7) million of the valuation allowance against its federal net deferred tax assets.

The Company continues to maintain a partial valuation allowance against its remaining federal and state net deferred tax assets due to significant federal and state net operating losses and insufficient future taxable income. As of December 31, 2025, the valuation allowance against the remaining federal and state net deferred tax assets was $355.4 million.

Going forward, Centrus will continue to evaluate both positive and negative evidence that would support any further changes to the remaining federal and state valuation allowances. Such evidence in the Company’s Technical Solutions segment may include events that could have a significant impact on pre-tax income, such as signing new contracts with significantly higher or lower margins than currently forecasted, follow-on work related to the HALEU program, or abandonment of the commercial deployment of the centrifuge technology. Such evidence in our LEU segment may include renewing SWU sales contracts with existing customers and/or signing new SWU sales or purchase contracts with significantly higher or lower margins than currently forecasted. Additional evidence in the LEU segment may include potential deferrals in the timing of deliveries requested by its customers, which could impact revenue recognition timing. The impact of these and other potential positive and negative events will be weighed and evaluated to determine if the valuation allowances should be increased or decreased in the future.

The Company has federal NOLs of $505.2 million remaining, which were generated through December 31, 2017. They currently expire through 2037. In addition, the Company has federal NOL carryforwards of $131.4 million generated after December 31, 2017, that do not expire. Centrus also has state NOL carryforwards of $491.3 million, with a full valuation allowance, that currently expire through 2038.

Effective Tax Rate

A reconciliation of income taxes calculated based on the federal statutory income tax rate and the effective tax rate follows:


	Year Ended December 31,
	2025				2024				2023
	Amount		Percentage		Amount		Percentage		Amount		Percentage
Federal statutory tax rate	$	17.9	21	%	$	15.3	21	%	$	17.7	21	%
State and local income taxes, net of federal income tax effect (1)	(0.3)		—		(0.3)		—		—		—
Changes in valuation allowances	(10.2)		(12)		(16.6)		(23)		(19.4)		(23)
Nontaxable or nondeductible items
Nondeductible Executive compensation under IRC section 162(m)	0.3		1		0.9		1		0.8		1
Other	0.2		—		(0.2)		—		0.4		—
Changes in unrecognized tax benefits	0.2		—		0.7		1		0.6		1
Effective tax rate	$	8.1	10	%	$	(0.2)	—	%	$	0.1	—	%

(1) State Taxes in Maryland (greater than 50 percent) of the tax effect in this category for the calendar year ending December 31, 2025.

The effective tax rate for the year ended December 31, 2025, includes a decrease to the valuation allowance against net deferred tax assets of $10.2 million, or a change to the effective tax rate of (12%).

The effective tax rate for the year ended December 31, 2024, includes a decrease to the valuation allowance against net deferred tax assets of $16.6 million, or a change to the effective tax rate of (23%).

The effective tax rate for the year ended December 31, 2023, includes a decrease to the valuation allowance against net deferred tax assets of $31.7 million, or a change to the effective tax rate of (38%). Included in the valuation allowance decrease is the release of the valuation allowance against federal net deferred taxes of $19.4 million, or a change to the effective tax rate of (23%), as well as a release of the valuation allowance against state net deferred taxes for state rate changes of $12.3 million during the year, as a result of state law changes, or a change to the effective tax rate of (15%). There is an offsetting increase to the effective tax rate for state rate changes of $12.1 million, or a change to the effective tax rate of 15% so that the impact for the state rate changes net of the corresponding valuation allowance decrease is zero.

Uncertain Tax Positions

Accounting standards require that a tax position meet a minimum recognition threshold in order for the related tax benefit to be recognized in the financial statements. The liability for unrecognized tax benefits, included in Other Long-Term Liabilities, was $3.6 million as of December 31, 2025, and $3.4 million as of December 31, 2024. If recognized, these tax benefits would impact the effective tax rate. As a result of changes to unrecognized tax benefits, the income tax provision (state tax, net of federal benefit) increased by $0.2 million and $0.5 million during the year ended December 31, 2025 and 2024, respectively. The liability for unrecognized tax benefits in the table below relates to unrecognized state income tax benefits.

A reconciliation of the beginning and ending amount of unrecognized tax benefits follows (in millions):


	Year Ended December 31,
	2025		2024
Balance at beginning of the period	$	3.4	$	2.9
Additions to tax positions of current period	0.2		0.5
Reductions to tax positions of prior years	—		—
Balance at end of the period	$	3.6	$	3.4

Centrus and its subsidiaries file income tax returns with the U.S. government and various states and foreign jurisdictions. As of December 31, 2025, the federal, Maryland and Tennessee statutes of limitation are closed with respect to all tax years through 2021.

Centrus recognizes accrued interest related to uncertain tax positions as a component of Interest Expense. Reversals of previously accrued interest for income taxes is typically offset against interest expense, but if the amount is significant, it is reclassified to interest income in the Consolidated Statements of Operations. Centrus recognizes the increase or decrease of accrued penalties for income taxes as a component of Selling, General and Administrative in the Consolidated Statements of Operations.

The impact of accrued interest and penalties for income taxes in the Consolidated Statements of Operations was an increase to expenses of $0.3 million for the year ended December 31, 2025, and $0.3 million for the year ended December 31, 2024. Accrued interest and penalties for income taxes, included as a component of Other Long-Term Liabilities, totaled $0.8 million as of December 31, 2025, and $0.5 million as of December 31, 2024.

- Definition

The entire disclosure for income tax.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 740
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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-Paragraph 1
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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-Paragraph 12C
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-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 6.I.5.Q1)
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+ Details

Audit Information	12 Months Ended
Audit Information	Dec. 31, 2025
Audit Information [Abstract]
Auditor Name	DELOITTE & TOUCHE LLP
Auditor Firm ID	34
Auditor Location	McLean, Virginia

Stock-Based Compensation (Stock-Based Compensation Costs) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Share-Based Payment Arrangement, Noncash Expense [Abstract]
Stock or Unit Option Plan Expense	$ 0.2	$ 0.0	$ 0.0
Stock Appreciation Rights Expense	0.0	0.0	1.0
Allocated Share-based Compensation Expense	5.7	1.5	2.3
Share-based Payment Arrangement, Expense, Tax Benefit	(1.2)	(0.3)	(0.3)
Restricted Stock Units (RSUs) [Member]
Share-Based Payment Arrangement, Noncash Expense [Abstract]
Restricted Stock or Unit Expense	4.8	1.0	0.9
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock or Unit Expense	4.8	1.0	0.9
Restricted Stock
Share-Based Payment Arrangement, Noncash Expense [Abstract]
Restricted Stock or Unit Expense	0.7	0.5	0.4
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock or Unit Expense	$ 0.7	$ 0.5	$ 0.4

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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+ Details

Property, Plant and Equipment (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Abstract]
Depreciation	$ 1.4	$ 1.0	$ 0.7

Leases (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
Leases (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Leases [Abstract]
Operating Lease, Weighted Average Remaining Lease Term	1 year 7 months 6 days	2 years 2 months 12 days
Operating Lease, Weighted Average Discount Rate, Percent	11.00%	11.70%
Operating Lease, Right-of-Use Asset	$ 1.8	$ 1.6
Operating Lease, Liability, Current	1.5	1.4
Operating Lease, Liability, Noncurrent	1.0	1.2
Operating Lease, Liability	2.5	2.6
Operating Lease, Expense	0.8	0.8	$ 0.1
Operating Lease, Expense Adjustment	(0.9)	(0.9)	(1.5)
Operating Lease, Payments	$ (1.9)	$ (1.9)	(1.7)
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other long-term assets	Other long-term assets
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Accounts payable and accrued liabilities	Accounts payable and accrued liabilities
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other long-term liabilities	Other long-term liabilities
Increase (Decrease) in Operating Lease Liability			$ (4.2)	$ 6.6

Income Taxes (Taxes by Jurisdiction) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Current Federal Tax Expense (Benefit)	$ 0	$ 0	$ 0
Current State and Local Tax Expense (Benefit)	700	500	1,600
Current Foreign Tax Expense (Benefit)	0	0	0
Current Income Tax Expense (Benefit)	700	500	1,600
Deferred Federal Income Tax Expense (Benefit)	8,100	(600)	(700)
Deferred Federal, State and Local, Tax Expense (Benefit)	(700)	(100)	(800)
Deferred Foreign Income Tax Expense (Benefit)	0	0	0
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability	(7,400)	700	1,500
Provision (benefit) for income taxes	$ 8,100	$ (200)	$ 100

Cash, Cash Equivalents and Restricted Cash (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Jun. 30, 2025	May 31, 2025
Cash and Cash Equivalent, Held in Foreign Currency	$ 0.1	$ 0.5
Unrealized Gain (Loss), Foreign Currency Transaction, before Tax	$ 0.1	$ (0.2)	$ 0.1
Restricted Cash				$ 11.2	$ 18.6

Fair Value Measurements

12 Months Ended

Dec. 31, 2025

Fair Value Disclosures [Abstract]

Fair Value Measurements

FAIR VALUE

Fair value is the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value of assets and liabilities, the following hierarchy is used in selecting inputs, with the highest priority given to Level 1, as these are the most transparent or reliable:

•Level 1 assets include investments with quoted prices in active markets that the Company has the ability to liquidate as of the reporting date.

•Level 2 assets include investments in U.S. government agency securities, corporate and municipal debt whose estimates are valued based on observable inputs, other than quoted prices.

•Level 3 assets include investments with unobservable inputs, such as third-party valuations, due to little or no market activity.

Financial Instruments Recorded at Fair Value (in millions):


	December 31, 2025								December 31, 2024
	Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		Total
Assets:
Cash and cash equivalents	$	1,957.2	$	—	$	—	$	1,957.2	$	671.4	$	—	$	—	$	671.4
Deferred compensation asset (a)	0.5		—		—		0.5		0.4		—		—		0.4

Liabilities:
Deferred compensation obligation (a)	$	0.5	$	—	$	—	$	0.5	$	0.4	$	—	$	—	$	0.4

There were no transfers between Level 1, 2 or 3 during the periods presented.

Other Financial Instruments

As of December 31, 2025, and 2024, the Consolidated Balance Sheets carrying amounts for Accounts Receivable, Accounts Payable and Accrued Liabilities (excluding the deferred compensation obligation described above), and Payables under Inventory Purchase Agreements approximate fair value because of their short-term nature.

The carrying value and estimated fair value of long-term debt are as follows (in millions):


	December 31, 2025					December 31, 2024
	Carrying Value			Estimated Fair Value (a)		Carrying Value			Estimated Fair Value (a)

8.25% Notes	$	—	(b)	$	—	$	89.6	(b)	$	73.6
2.25% Convertible Notes	$	391.2	(c)	$	1,080.4	$	389.0	(c)	$	403.8
0% Convertible Notes	$	783.7	(d)	$	1,089.8	$	—	(d)	$	—

(a) Estimated fair value is based on bid/ask quotes as of or near the balance sheet date, which are considered Level 2 inputs.

(b) The carrying value of the 8.25% Notes consisted of the principal balance of $0 and $74.3 million as of December 31, 2025 and December 31, 2024, respectively, and the sum of current and noncurrent interest payment obligations until maturity. Refer to Note 8, Debt.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
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-Name Accounting Standards Codification
-Section 55
-Paragraph 107
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-107

Reference 3: http://www.xbrl.org/2003/role/exampleRef
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-100

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Section 50
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-Subparagraph (c)(3)
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-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

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-Name Accounting Standards Codification
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-Paragraph 6A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

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-Subparagraph (h)
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
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-Section 50
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-Subparagraph (e)
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Reference 10: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Property, Plant and Equipment

12 Months Ended

Dec. 31, 2025

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

PROPERTY, PLANT AND EQUIPMENT, NET

A summary of changes in property, plant and equipment follows (in millions):


	December 31, 2024		Additions / (Depreciation)		December 31, 2025

Land	$	1.2	$	—	$	1.2
Buildings and leasehold improvements	5.6		1.2		6.8
Machinery and equipment	5.0		1.6		6.6
Construction in progress	2.9		18.7		21.6
Property, plant and equipment, gross	14.7		21.5		36.2
Accumulated depreciation	(5.3)		(1.4)		(6.7)
Property, plant and equipment, net	$	9.4	$	20.1	$	29.5

Depreciation expense was $1.4 million in 2025, $1.0 million in 2024 and $0.7 million in 2023.

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
Income Taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Sep. 30, 2023	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Increase (decrease) in deferred tax asset valuation allowance	$ (11,700)	$ (7,700)
Operating Loss Carryforwards			$ 505,200
Operating Loss Carryforwards, No Expiration			131,400
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount			10,200	$ 16,600	$ 31,700
Provision (benefit) for income taxes			(8,100)	200	(100)
Liability for Uncertain Tax Positions, Noncurrent	$ 2,900		3,600	3,400	$ 2,900
Income Tax Examination, Penalties and Interest Expense Reduction			(300)	(300)
Unrecognized Tax Benefits, Income Tax Penalties Expense Reduction			(200)	(500)
Income Tax Examination, Penalties and Interest Accrued			$ 800	$ 500
Federal Statutory Income Tax Rate, Percent			21.00%	21.00%	21.00%
Deferred Tax Assets, Valuation Allowance			$ 355,400	$ 365,700
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount			(300)	$ (300)	$ 0
Domestic Tax Jurisdiction [Member]
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount					19,400
State and Local Jurisdiction [Member]
Operating Loss Carryforwards, Valuation Allowance			$ 491,300
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount					(12,300)
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount					$ 12,100

Insider Trading Policies and Procedures	12 Months Ended
Insider Trading Policies and Procedures	Dec. 31, 2025
Insider Trading Policies and Procedures [Line Items]
Insider Trading Policies and Procedures Adopted	false

Cash, Cash Equivalents and Restricted Cash (Schedule of Cash, Cash Equivalents and Restricted Cash) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash, Cash Equivalents and Restricted Cash [Abstract]
Cash and cash equivalents	$ 1,957.2	$ 671.4
Restricted cash included in other current assets	0.2	30.0
Restricted cash included in other long-term assets	2.7	2.6
Total cash, cash equivalents and restricted cash	1,960.1	704.0	$ 233.8	$ 212.4
Unrealized Gain (Loss), Foreign Currency Transaction, before Tax	$ 0.1	$ (0.2)	$ 0.1

Inventories (Schedule of Inventories) (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Inventory, Net [Abstract]
Separative work units inventory	$ 21.1	$ 5.0
Uranium inventory	301.8	156.6
Inventories	322.9	161.6
Separative work units owed to customers and suppliers	17.8	2.5
Uranium owed to customers and suppliers	174.9	13.7
Inventories owed to customers and suppliers	192.7	16.2
Separative work units net of liability	3.3	2.5
Uranium inventory net of liability	126.9	142.9
Inventories, net	$ 130.2	$ 145.4

Stock-Based Compensation Stock-Based Compensation (Assumptions Used in the Black-Scholes Option Pricing Model) (Details) - shares	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	0	0
Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		0
Stock Appreciation Rights (SARS), Performance Condition [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	0	0

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' DEFICIT - USD ($) $ in Millions	Total	Preferred Stock [Member]	Common Stock [Member] Common Class A [Member]	Common Stock [Member] Common Class B [Member]	Excess of Capital over Par Value [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning Balance at Dec. 31, 2022	$ (74.1)	$ 0.0	$ 1.4	$ 0.1	$ 158.1	$ (233.9)	$ 0.2
Net income	84.4	0.0	0.0	0.0	0.0	84.4	0.0
Stock issued during period	23.2	0.0	0.1	0.0	23.1	0.0	0.0
Shares withheld for employee taxes	(3.0)	0.0	0.0	0.0	3.0	0.0	0.0
Other comprehensive income, net of tax	(0.5)	0.0	0.0	0.0	0.0	0.0	(0.5)
Restricted and other common stock issued, net of amortization	2.3	0.0	0.0	0.0	2.3	0.0	0.0
Ending Balance at Dec. 31, 2023	32.3	0.0	1.5	0.1	180.5	(149.5)	(0.3)
Net income	73.2	0.0	0.0	0.0	0.0	73.2	0.0
Stock issued during period	55.2	0.0	0.1	0.0	55.1	0.0	0.0
Reclassification of stock-based compensation from liability to equity	0.1
Shares withheld for employee taxes	(0.6)	0.0	0.0	0.0	0.6	0.0	0.0
Other comprehensive income, net of tax	(0.2)	0.0	0.0	0.0	0.0	0.0	(0.2)
Restricted and other common stock issued, net of amortization	1.5	0.0	0.0	0.0	1.5	0.0	0.0
Ending Balance at Dec. 31, 2024	161.4	0.0	1.6	0.1	236.5	(76.3)	(0.5)
Net income	77.8	0.0	0.0	0.0	0.0	77.8	0.0
Stock issued during period	523.7	0.0	0.3	0.0	523.4	0.0	0.0
Reclassification of stock-based compensation from liability to equity	3.6
Shares withheld for employee taxes	(3.4)	0.0	0.0	0.0	3.4	0.0	0.0
Other comprehensive income, net of tax	(0.2)	0.0	0.0	0.0	0.0	0.0	(0.2)
Restricted and other common stock issued, net of amortization	5.8	0.0	0.0	0.0	5.8	0.0	0.0
Ending Balance at Dec. 31, 2025	$ 765.1	$ 0.0	$ 1.9	$ 0.1	$ 762.3	$ 1.5	$ (0.7)

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

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+ Details

- Definition

Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

+ References + Details

- Definition

Amount of equity (deficit) attributable to parent. Excludes temporary equity and equity attributable to noncontrolling interest.

+ References

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+ Details

Leases (Tables)

12 Months Ended

Dec. 31, 2025

Leases [Abstract]

Lessee, Operating Lease, Liability, Maturity [Table Text Block]

The table below presents the lease-related assets and liabilities for operating leases recorded on the Consolidated Balance Sheets (in millions).


	December 31,
	2025		2024		Classification on the Balance Sheet

Lease assets	$	1.8	$	1.6	Other long-term assets

Lease liabilities:
Current	$	1.5	$	1.4	Accounts payable and accrued liabilities
Noncurrent	1.0		1.2		Other long-term liabilities
Total lease liabilities	$	2.5	$	2.6

The table below reconciles undiscounted payments for operating leases with terms greater than 12 months to the operating lease liabilities recorded on the balance sheet as of December 31, 2025 (in millions).


2026	$	1.9
2027	1.3
2028	—
2029	—
2030	—
Thereafter	—
Total undiscounted lease payments	3.2
Less imputed interest	(0.7)
Total lease liabilities	$	2.5

Pension and Postretirement Health and Life Benefits (Schedule of Changes in Projected Benefit Obligations) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan, Actuarial (Gain) Loss From Remeasurement	$ (2.9)	$ 17.3	$ 24.6
Defined Benefit Plan, Plan Assets, Amount	31.3	31.0
Pension Plan, Defined Benefit [Member]
Defined Benefit Plan, Benefit Obligation	31.0	30.6	308.2	$ 527.3
Defined Benefit Plan, Actuarial (Gain) Loss From Remeasurement	0.9	(21.9)
Defined Benefit Plan, Service Cost	0.4	2.1	2.9
Defined Benefit Plan, Interest Cost	1.7	7.6	27.8
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement	0.0	(238.8)
Defined Benefit Plan, Benefit Obligation, Administrative Expenses Paid	(0.7)	(1.6)
Defined Benefit Plan, Plan Assets, Amount	31.3	31.0	290.5
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	2.4	5.3
Defined Benefit Plan, Plan Assets, Contributions by Employer	0.5	0.6
Defined Benefit Plan, Plan Assets, Benefits Paid	1.9	25.0
Defined Benefit Plan, Plan Assets, Payment for Settlement	0.0	(238.8)
Defined Benefit Plan, Plan Assets, Administration Expense	(0.7)	(1.6)
Defined Benefit Plan, Funded (Unfunded) Status of Plan	0.3	0.4
Amounts Recognized In Current Liabilities	(1.3)	(0.4)
Amounts Recognized In Noncurrent Liabilities	(3.0)	(4.0)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position	0.3	0.4
Recognized In Accumulated Other Comprehensive Income Pre Tax Prior Service Cost Credit	0.1	0.0
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax	0.1	0.0	(0.1)
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Benefit Obligation	81.4	84.1	91.3
Defined Benefit Plan, Actuarial (Gain) Loss From Remeasurement	2.5	0.0
Defined Benefit Plan, Service Cost	0.0	0.0	0.0
Defined Benefit Plan, Interest Cost	4.5	4.5	5.0
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement	0.0	0.0
Defined Benefit Plan, Benefit Obligation, Administrative Expenses Paid	0.0	0.0
Defined Benefit Plan, Plan Assets, Amount	0.0	0.0	0.0
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	0.0	0.0
Defined Benefit Plan, Plan Assets, Contributions by Employer	9.7	11.7
Defined Benefit Plan, Plan Assets, Benefits Paid	9.7	11.7
Defined Benefit Plan, Plan Assets, Payment for Settlement	0.0	0.0
Defined Benefit Plan, Plan Assets, Administration Expense	0.0	0.0
Defined Benefit Plan, Funded (Unfunded) Status of Plan	(81.4)	(84.1)
Amounts Recognized In Current Liabilities	(9.2)	(9.5)
Amounts Recognized In Noncurrent Liabilities	(72.2)	(74.6)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position	(81.4)	(84.1)
Recognized In Accumulated Other Comprehensive Income Pre Tax Prior Service Cost Credit	(1.6)	(1.7)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax	(1.6)	(1.7)	$ (1.8)
Plan paid [Member] \| Pension Plan, Defined Benefit [Member]
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(1.9)	(24.6)
Plan paid [Member] \| Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(9.7)	(11.7)
Company paid [Member] \| Pension Plan, Defined Benefit [Member]
Defined Benefit Plan, Benefit Obligation, Benefits Paid	0.0	(0.4)
Company paid [Member] \| Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Benefit Obligation, Benefits Paid	$ 0.0	$ 0.0

Fair Value Measurements (Financial Instruments Recorded at Fair Value) (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Cash and cash equivalents	$ 1,957.2	$ 671.4
Cash and cash equivalents	1,957.2	671.4
Deferred compensation asset	0.5	0.4
Deferred compensation obligation	0.5	0.4
Fair Value, Inputs, Level 1 [Member]
Cash and cash equivalents	1,957.2	671.4
Deferred compensation asset	0.5	0.4
Deferred compensation obligation	0.5	0.4
Fair Value, Inputs, Level 2 [Member]
Cash and cash equivalents	0.0	0.0
Deferred compensation asset	0.0	0.0
Deferred compensation obligation	0.0	0.0
Fair Value, Inputs, Level 3 [Member]
Cash and cash equivalents	0.0	0.0
Deferred compensation asset	0.0	0.0
Deferred compensation obligation	$ 0.0	$ 0.0

- Definition

Fair value portion of the amount that could be realized under a life insurance contract or contracts owned by the entity, commonly known as corporate-owned life insurance (COLI) or bank-owned life insurance (BOLI).

+ References + Details

Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Dec. 31, 2025
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Maturity of Operating Lease Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Leases [Abstract]
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	$ 1.9
Lessee, Operating Lease, Liability, Payments, Due Year Two	1.3
Lessee, Operating Lease, Liability, Payments, Due Year Three	0.0
Lessee, Operating Lease, Liability, Payments, Due Year Four	0.0
Lessee, Operating Lease, Liability, Payments, Due Year Five	0.0
Lessee, Operating Lease, Liability, Payments, Due after Year Five	0.0
Lessee, Operating Lease, Liability, Payments, Due	3.2
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(0.7)
Operating Lease, Liability	$ 2.5	$ 2.6

Segment Information (Tables)

12 Months Ended

Dec. 31, 2025

Segment Reporting Information, Revenue for Reportable Segment [Abstract]

Revenue from External Customers by Geographic Areas


	Year Ended December 31,
	2025		2024		2023
United States	$	232.8	$	161.3	$	230.4
Foreign:

Japan	102.7		117.2		23.6
Netherlands	—		42.4		—
Other	10.7		29.0		15.0
Total foreign	113.4		188.6		38.6
Revenue - SWU and uranium	$	346.2	$	349.9	$	269.0

Revenue by customer location, including customers in a foreign country representing 10% or more of total revenue, follows (in millions):


	Year Ended December 31,
	2025		2024		2023

United States	$	335.3	$	253.4	$	281.6
Foreign:

Japan	102.7		117.2		23.6
Netherlands	—		42.4		—
Other	10.7		29.0		15.0
Total foreign	113.4		188.6		38.6
Total revenue	$	448.7	$	442.0	$	320.2

Segment Reporting Information

The following table presents the Company’s segment information (in millions):


	Year Ended December 31,
	2025		2024		2023
Revenue
LEU segment:
Separative work units	$	298.7	$	246.8	$	208.2
Uranium	47.5		103.1		60.8
Intersegment revenue, eliminated on consolidation	12.4		6.4		5.0
Total	358.6		356.3		274.0
Technical Solutions segment	102.5		92.1		51.2
Total revenue	461.1		448.4		325.2
Elimination of intersegment revenue	(12.4)		(6.4)		(5.0)
Total revenue	$	448.7	$	442.0	$	320.2

Cost of Sales
LEU segment:
Separative work units and uranium	$	234.7	$	256.0	$	163.9
Intersegment cost of sales, eliminated on consolidation	10.7		2.1		3.0
Total	245.4		258.1		166.9
Technical Solutions Segment:
Technical Solutions	96.5		74.5		44.2
Total	96.5		74.5		44.2
Elimination of intersegment cost of sales	(10.7)		(2.1)		(3.0)
Total cost of sales	$	331.2	$	330.5	$	208.1

Segment Gross Profit
LEU segment:
LEU segment	$	111.5	$	93.9	$	105.1
Intersegment gross profit, eliminated on consolidation	1.7		4.3		2.0
Total	113.2		98.2		107.1
Technical Solutions segment:
Technical Solutions	6.0		17.6		7.0

Total	6.0		17.6		7.0
Elimination of intersegment gross profit	(1.7)		(4.3)		(2.0)
Gross profit	$	117.5	$	111.5	$	112.1

Reconciliation to Income before income taxes
Advanced technology costs	$	16.9	$	17.2	$	14.2
Selling, general and administrative	36.2		35.0		36.9
Equity-related compensation	5.8		1.5		2.3
Amortization of intangible assets	8.4		9.8		6.3

Nonoperating components of net periodic benefit loss (income)	6.8		(14.7)		(23.2)
Interest expense	14.0		2.7		1.3
Investment income	(44.7)		(12.9)		(8.7)
Extinguishment of long-term debt	(11.8)		—		—
Other income, net	—		(0.1)		(1.5)
Income before income taxes	$	85.9	$	73.0	$	84.5

Pension and Postretirement Health and Life Benefits (Schedule of Net Benefit Costs) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plan, Actuarial (Gain) Loss From Remeasurement	$ (2.9)	$ 17.3	$ 24.6
Pension Plan, Defined Benefit [Member]
Service costs	0.4	2.1	2.9
Interest costs	1.7	7.6	27.8
Expected return on plan assets (gains)	(1.9)	(9.4)	(31.0)
Amortization of prior service costs (credits), net	(0.1)	(0.1)	(0.2)
Actuarial (gains) losses, net	0.4	(17.9)	(26.0)
Defined Benefit Plan, Actuarial (Gain) Loss From Remeasurement	0.9	(21.9)
Net periodic benefit cost (credit)	0.5	(17.7)	(26.5)
Postretirement Health and Life Benefits Plans [Member]
Service costs	0.0	0.0	0.0
Interest costs	4.5	4.5	5.0
Expected return on plan assets (gains)	0.0	0.0	(0.1)
Amortization of prior service costs (credits), net	(0.1)	(0.1)	(0.1)
Actuarial (gains) losses, net	2.5	0.0	1.4
Defined Benefit Plan, Actuarial (Gain) Loss From Remeasurement	2.5	0.0
Net periodic benefit cost (credit)	$ 6.9	$ 4.4	$ 6.2

Pension and Postretirement Health and Life Benefits (Schedule of Fair Value of Plan Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	$ 31.3	$ 31.0
Defined Benefit Plan, Investments Measured at NAV	1.6	3.2
Accrued interest receivable	0.1	0.0
Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	29.6	27.8
Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0.0	0.0
Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0.0	0.0
Fair Value, Inputs, Level 1, 2 and 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	29.6	27.8
US government securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	6.2	5.7
US government securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0.0	0.0
US government securities [Member] \| Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0.0	0.0
US government securities [Member] \| Fair Value, Inputs, Level 1, 2 and 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	6.2	5.7
Corporate debt [Member] \| Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0.0	0.0
Corporate debt [Member] \| Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0.0	0.0
Corporate debt [Member] \| Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0.0	0.0
Corporate debt [Member] \| Fair Value, Inputs, Level 1, 2 and 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0.0	0.0
Municipal bonds and non-U.S. government securities [Member] \| Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	18.7	17.7
Municipal bonds and non-U.S. government securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0.0	0.0
Municipal bonds and non-U.S. government securities [Member] \| Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0.0	0.0
Municipal bonds and non-U.S. government securities [Member] \| Fair Value, Inputs, Level 1, 2 and 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	18.7	17.7
Mutual Fund [Member] \| Fair Value, Inputs, Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	4.7	4.4
Mutual Fund [Member] \| Fair Value, Inputs, Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0.0	0.0
Mutual Fund [Member] \| Fair Value, Inputs, Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	0.0	0.0
Mutual Fund [Member] \| Fair Value, Inputs, Level 1, 2 and 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	4.7	4.4
Pension Plan, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	31.3	31.0	$ 290.5
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount	$ 0.0	$ 0.0	$ 0.0

Net Income Per Share (Tables)

12 Months Ended

Dec. 31, 2025

Earnings Per Share [Abstract]

Schedule of Net Income Per Share

The weighted average number of common and common equivalent shares and the calculation of basic and diluted income per common share are as follows:


	Year Ended December 31,
	2025		2024		2023
Numerator (in millions):
Net income	$	77.8	$	73.2	$	84.4





Denominator (in thousands):
Average common shares outstanding - basic	17,967		16,309		15,212
Potentially dilutive shares related to equity-compensation awards	58		64		289
Potentially dilutive shares related to 2.25% Convertible Notes	1,900		—		—
Potentially dilutive shares related to 0% Convertible Notes	—		—		—
Average common shares outstanding - diluted	19,925		16,373		15,501

Net income per common share (in dollars):
Basic	$	4.33	$	4.49	$	5.55
Diluted	$	3.90	$	4.47	$	5.44

0% Convertible Notes (if-converted) excluded from the diluted calculation because they would have been antidilutive (in thousands)	951		$	—	$	—

Stock-Based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	6 Months Ended	12 Months Ended
	Mar. 31, 2023	Jun. 30, 2024	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized			1,900,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant			547,669
Weighted-average period in years of costs to be recognized			25 months
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized			$ 1.4
Board restricted stock units potentially converted to common stock shares			111,000
Reclassification of stock-based compensation from liability to equity			$ 3.6	$ 0.1
Shares withheld for employee taxes			3.4	0.6	$ 3.0
Payments for Share-Based Compensation Arrangement Reclassification			2.2	0.3
Excess of Capital over Par Value [Member]
Shares withheld for employee taxes	$ (1.9)	$ (0.1)	$ (3.4)	$ (0.6)	$ (3.0)
Notional Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number				0	0	122,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period				0	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period				0	(104,000)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period				0	(18,000)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value				$ 0	$ 0	$ 5.53
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value				0	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value				0	5.53
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value				$ 0	$ 5.53
Notional Stock Units, Performance Condition [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number				0	8,000	8,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period				0	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period				(8,000)	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period				0	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value				$ 0	$ 39.55	$ 39.55
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value				0	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value				39.55	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value				$ 0	$ 0
Restricted Stock, Performance Condition [Domain] \| 2022 Award
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number			0	17,000	17,000	22,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period			0	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period			(17,000)	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period			0	0	(5,000)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value			$ 0	$ 33.70	$ 33.70	$ 33.70
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value			0	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value			33.70	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value			$ 0	$ 0	$ 33.70
Restricted Stock, Performance Condition [Domain] \| 2023 Award
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number			8,000	11,000	11,000	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period			0	0	17,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period			(2,000)	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period			(1,000)	0	(6,000)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value			$ 42.70	$ 42.70	$ 42.70	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value			0	0	42.70
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value			42.70	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value			$ 42.70	$ 0	$ 42.70
Restricted Stock, Performance Condition [Domain] \| 2024 Award
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number			17,000	24,000	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period			0	24,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period			(3,000)	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period			(4,000)	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value			$ 38.67	$ 38.67	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value			0	38.67
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value			38.67	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value			$ 38.67	$ 0
Restricted Stock, Performance Condition [Domain] \| 2025 Award
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number			9,000	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period			12,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period			(1,000)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period			(2,000)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value			$ 84.40	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value			84.40
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value			84.40
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value			$ 84.40

Schedule of Share Based Compensation Shares Authorized Under Stock Option Plans By Exercise Price (Details) - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2025	Dec. 31, 2024
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Exercise Price	$ 4.37	$ 4.37		$ 0
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Remaining Contractual Term	3 months 18 days	2 years 2 months 12 days
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options			0

Accounts Payable and Accrued Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Accounts Payable and Accrued Liabilities [Abstract]
Accounts Payable, Other, Current	$ 10.0	$ 5.8
CompensationAndBenefitsPayable	16.6	19.9
Postretirement health and life benefit obligations - current	9.2	9.5
Operating Lease, Liability, Current	1.5	1.4
Other Accrued Liabilities, Current	2.8	0.9
Accounts payable and accrued liabilities	41.6	38.8
Convertible Notes Payable, Current	$ 1.5	$ 1.3

Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2025

Share-Based Payment Arrangement, Noncash Expense [Abstract]

Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]

A summary of stock-based compensation costs is as follows (in millions):


	Year Ended December 31,
	2025		2024		2023

Notional stock units and stock appreciation rights	$	—	$	—	$	1.0
Restricted stock	$	0.7	$	0.5	$	0.4
BOD and employee restricted stock units	4.8		1.0		0.9
Common stock	0.2		—		—
Total stock-based compensation costs	$	5.7	$	1.5	$	2.3

Total recognized tax benefit	$	(1.2)	$	(0.3)	$	(0.3)

Share-based Payment Arrangement, Nonemployee Director Award Plan, Activity [Table Text Block]

Centrus’ board restricted stock activity is as follows:


	Shares (in thousands)	Weighted Average Grant Date Fair Value (per share)

Nonvested at December 31, 2022	28	$38.80
Granted	17	$35.95
Vested	(28)	$38.80
Forfeited	—	—
Nonvested at December 31, 2023	17	$35.95
Granted	21	$41.65
Vested	(14)	$35.95
Forfeited	(3)	$35.95
Nonvested at December 31, 2024	21	$41.65
Granted	4	$190.04
Vested	(21)	$41.65
Forfeited	(1)	$190.04
Nonvested at December 31, 2025	3	$190.04

Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]

Centrus’ employee restricted stock activity is as follows:


	Shares (in thousands)	Weighted Average Grant Date Fair Value (per share)

Nonvested at December 31, 2022	3	$24.01
Granted	20	$55.54
Vested	(1)	$24.01
Forfeited	(1)	$24.01
Nonvested at December 31, 2023	21	$54.04
Granted	—	—
Vested	(5)	$49.23
Forfeited	—	—
Nonvested at December 31, 2024	16	$55.54
Granted	6	$113.43
Vested	(4)	$55.54
Forfeited	—	—
Nonvested at December 31, 2025	18	$73.84

Share-based Compensation, Stock Options, Activity [Table Text Block]

A summary of stock option activity is as follows:


	Stock Options (in thousands)	Weighted Average Exercise Price (per share)	Weighted Average Remaining Contractual Life in Years	Aggregate Intrinsic Value (in millions)

Outstanding at December 31, 2022	96	$4.37	2.2	$2.7
Granted	—	—	—	—
Exercised	—	—	—	—
Forfeited/Cancelled	—	—	—	—
Outstanding at December 31, 2023	96	$4.37	0.3	$4.8
Granted	—	—	—	—
Exercised	(96)	$4.37	—	—
Forfeited/Cancelled	—	—	—	—
Outstanding at December 31, 2024 and 2025	—	—	—	—





Exercisable at December 31, 2025	—	—	—	—

Share-based Payment Arrangement, Stock Appreciation Right, Activity [Table Text Block]

A summary of SARs with time-based vesting granted under the 2014 Plan is as follows:


	Stock Appreciation Rights (in thousands)	Weighted Average Exercise Price (per share)	Weighted Average Remaining Contractual Life in Years	Aggregate Intrinsic Value (in millions)

Outstanding at December 31, 2022	70	$5.53	0.3	$2.7
Granted	—	—	—	—
Exercised	(74)	$5.53	—	—
Forfeited/Cancelled	4	$5.53	—	—
Outstanding at December 31, 2023, 2024 and 2025	—	—	—	—









Exercisable at December 31, 2025	—	—	—	—

Share-based Payment Arrangement, Stock Appreciation Right, Performance Condition, Activity [Table Text Block]

A summary of SARs with performance-based vesting granted under the 2014 Plan is as follows:


	Stock Appreciation Rights (in thousands)	Weighted Average Exercise Price (per share)	Weighted Average Remaining Contractual Life in Years	Aggregate Intrinsic Value (in millions)

Outstanding at December 31, 2022	18	$19.44	1.3	—
Granted	—	—	—	—
Exercised	—	—	—	—
Forfeited/Cancelled	(1)	$19.44	—	—
Outstanding at December 31, 2023	17	$19.44	0.2	$0.3
Granted	—	—	—	—
Exercised	(17)	$19.44	—	—
Forfeited/Cancelled	—	—	—	—
Outstanding at December 31, 2024 and 2025	—	—	—	—





Exercisable at December 31, 2025	—	—	—	—

Schedule of Notional Stock Units, Activity [Table Text Block]

A summary of notional stock units with time-based vesting granted under the 2014 Plan is as follows:


	2019 and 2020 Awards		2021 Award
	Shares (in thousands)	Weighted Average Grant Date Fair Value (per share)	Shares (in thousands)	Weighted Average Grant Date Fair Value (per share)

Nonvested at December 31, 2022	122	$5.53	8	$39.55
Granted	—	—	—	—
Vested	(104)	$5.53	—	—
Forfeited/Cancelled	(18)	$5.53	—	—
Nonvested at December 31, 2023	—	—	8	$39.55
Granted	—	—	—	—
Vested	—	—	(8)	$39.55
Forfeited/Cancelled	—	—	—	—
Nonvested at December 31, 2024 and 2025	—	—	—	—

Schedule of Notional Stock Units, Performance Condition, Activity [Table Text Block]

Restricted Stock (Performance Condition)

A summary of restricted stock with performance-based vesting granted under the 2014 Plan is as follows:


	2022 Award		2023 Award		2024 Award		2025 Award
	Shares (in thousands)	Weighted Average Grant Date Fair Value (per share)	Shares (in thousands)	Weighted Average Grant Date Fair Value (per share)	Shares (in thousands)	Weighted Average Grant Date Fair Value (per share)	Shares (in thousands)	Weighted Average Grant Date Fair Value (per share)

Nonvested at December 31, 2022	22	$33.70	—	—	—	—	—	—
Granted	—	—	17	$42.70	—	—	—	—
Vested	—	—	—	—	—	—	—	—
Forfeited	(5)	$33.70	(6)	$42.70	—	—	—	—
Nonvested at December 31, 2023	17	$33.70	11	$42.70	—	—	—	—
Granted	—	—	—	—	24	$38.67	—	—
Vested	—	—	—	—	—	—	—	—
Forfeited	—	—	—	—	—	—	—	—
Nonvested at December 31, 2024	17	$33.70	11	$42.70	24	$38.67	—	—
Granted	—	—	—	—	—	—	12	$84.40
Vested	(17)	$33.70	(2)	$42.70	(3)	$38.67	(1)	$84.40
Forfeited	—	—	(1)	$42.70	(4)	$38.67	(2)	$84.40
Nonvested at December 31, 2025	—	—	8	$42.70	17	$38.67	9	$84.40

Cash, Cash Equivalents and Restricted Cash (Schedule of Restricted Cash) (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Restricted Cash and Cash Equivalent Item [Line Items]
Restricted cash included in other current assets	$ 0.2	$ 30.0
Restricted cash included in other long-term assets	2.7	2.6
Other financial assurance [Member]
Restricted Cash and Cash Equivalent Item [Line Items]
Restricted cash included in other current assets	0.2	0.2
Restricted cash included in other long-term assets	0.1	0.1
Workers compensation financial assurance [Member]
Restricted Cash and Cash Equivalent Item [Line Items]
Restricted cash included in other current assets	0.0	0.0
Restricted cash included in other long-term assets	2.6	2.5
Collateral for Inventory Loan
Restricted Cash and Cash Equivalent Item [Line Items]
Restricted cash included in other current assets	0.0	29.8
Restricted cash included in other long-term assets	$ 0.0	$ 0.0