Accounts Receivable [Abstract]
Accounts Receivable [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable [Table]
Schedule of Accounts, Notes, Loans and Financing Receivable [Table]
Financing Receivable Portfolio Segment [Axis]
Financing Receivable Portfolio Segment [Axis]
Financing Receivable Portfolio Segment [Domain]
Financing Receivable Portfolio Segment [Domain]
Class of Financing Receivable, Type [Axis]
Class of Financing Receivable, Type [Axis]
Class of Financing Receivable, Type [Domain]
Class of Financing Receivable, Type [Domain]
Collateral [Axis]
Collateral [Axis]
Collateral [Domain]
Collateral [Domain]
Geographic Distribution [Axis]
Geographic Distribution [Axis]
Geographic Distribution [Domain]
Geographic Distribution [Domain]
Class of Financing Receivable, Type of Borrower [Axis]
Class of Financing Receivable, Type of Borrower [Axis]
Class of Financing Receivable, Type of Borrower [Domain]
Class of Financing Receivable, Type of Borrower [Domain]
Industry of Counterparty, Type [Axis]
Industry of Counterparty, Type [Axis]
Industry of Counterparty [Domain]
Industry of Counterparty [Domain]
Legal Entity of Counterparty, Type [Axis]
Legal Entity of Counterparty, Type [Axis]
Legal Entity Type of Counterparty [Domain]
Legal Entity Type of Counterparty [Domain]
Counterparty Name [Axis]
Counterparty Name [Axis]
Counterparty Name [Domain]
Counterparty Name [Domain]
Product and Service [Axis]
Product and Service [Axis]
Product and Service [Domain]
Product and Service [Domain]
Consolidation Items [Axis]
Consolidation Items [Axis]
Consolidation Items [Domain]
Consolidation Items [Domain]
Segments [Axis]
Segments [Axis]
Segments [Domain]
Segments [Domain]
Subsegments [Axis]
Subsegments [Axis]
Subsegments [Domain]
Subsegments [Domain]
Geographical [Axis]
Geographical [Axis]
Geographical [Domain]
Geographical [Domain]
Billing Status, Type [Axis]
Billing Status, Type [Axis]
Receivables Billing Status [Domain]
Receivables Billing Status [Domain]
Receivable Type [Axis]
Receivable Type [Axis]
Receivable [Domain]
Receivable [Domain]
Industry Sector [Axis]
Industry Sector [Axis]
Industry Sector [Domain]
Industry Sector [Domain]
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Axis]
Concentration Risk Benchmark [Domain]
Concentration Risk Benchmark [Domain]
Concentration Risk Type [Axis]
Concentration Risk Type [Axis]
Concentration Risk Type [Domain]
Concentration Risk Type [Domain]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Billed Contracts Receivable
Billed Contracts Receivable
Unbilled Receivables, Current
Unbilled Receivables, Current
Uranium feed receivable
Uranium feed receivable
Uranium feed receivable
Accounts receivable, net
Accounts Receivable, Net, Current
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Statement [Table]
Statement [Table]
Retirement Plan Type [Axis]
Retirement Plan Type [Axis]
Retirement Plan Type [Domain]
Retirement Plan Type [Domain]
Pension Plan, Defined Benefit [Member]
Pension Plan [Member]
Other Postretirement Benefits Plan [Member]
Other Postretirement Benefits Plan [Member]
Statement [Line Items]
Statement [Line Items]
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets
Accounts Payable and Accrued Liabilities [Abstract]
Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]
Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]
Stockholders' Equity Attributable to Parent [Abstract]
Schedule of Stock by Class [Table Text Block]
Schedule of Stock by Class [Table Text Block]
Defined Benefit Plan, Assumed Health Care Cost Trend Rates [Abstract]
Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Next Fiscal Year
Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Next Fiscal Year
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate
Defined Benefit Plan, Year Health Care Cost Trend Rate Reaches Ultimate Trend Rate
Defined Benefit Plan, Year Health Care Cost Trend Rate Reaches Ultimate Trend Rate
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer
Revenue from Contract with Customer [Text Block]
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment [Table]
Property, Plant and Equipment [Table]
Property, Plant and Equipment, Type [Axis]
Property, Plant and Equipment, Type [Axis]
Property, Plant and Equipment, Type [Domain]
Property, Plant and Equipment, Type [Domain]
Land [Member]
Land [Member]
Leasehold Improvements [Member]
Leasehold Improvements [Member]
Equipment [Member]
Equipment [Member]
Other Capitalized Property Plant and Equipment [Member]
Other Capitalized Property Plant and Equipment [Member]
Range [Axis]
Range [Axis]
Range [Domain]
Range [Domain]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross
Property, Plant and Equipment, Gross
Property, Plant and Equipment, Additions
Property, Plant and Equipment, Additions
Property, Plant and Equipment, Disposals
Property, Plant and Equipment, Disposals
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
Depreciation
Depreciation
Accumulated Depreciation, Depletion and Amortization, Sale or Disposal of Property, Plant and Equipment
Accumulated Depreciation, Depletion and Amortization, Sale or Disposal of Property, Plant and Equipment
Property, Plant And Equipment, Net Capital Expenditures
Property, Plant And Equipment, Net Capital Expenditures
Property, Plant And Equipment, Net Capital Expenditures
Property, Plant and Equipment, Net
Property, Plant and Equipment, Net
Cash, Cash Equivalents and Restricted Cash [Abstract]
Cash, Cash Equivalents and Restricted Cash [Abstract]
Cash and Cash Equivalents Disclosure
Cash and Cash Equivalents Disclosure [Text Block]
Segment Reporting [Abstract]
Revenue from top 10 customers
Revenue from top 10 customers
Revenue from top 10 customers
Revenue from top 3 customers
Revenue from top 3 customers
Revenue from top 3 customers
Revenue from first customer over 10 percent
Revenue from first customer over 10 percent
Revenue from first customer over 10 percent
Revenue from second customer over 10 percent
Revenue from second customer over 10 percent
Revenue from second customer over 10 percent
Revenue from third customer over 10 percent
Revenue from third customer over 10 percent
Revenue from third customer over 10 percent
Revenue from fourth customer over 10 percent
Revenue from fourth customer over 10 percent
Revenue from fourth customer over 10 percent
Schedule of Cash and Cash Equivalents
Schedule of Cash and Cash Equivalents [Table Text Block]
Restrictions on Cash and Cash Equivalents
Restrictions on Cash and Cash Equivalents [Table Text Block]
Scenario [Axis]
Scenario [Axis]
Scenario, Unspecified [Domain]
Scenario, Unspecified [Domain]
Trade payables
Accounts Payable, Other, Current
Postretirement health and life benefit obligations - current
Liability, Pension and Other Postretirement and Postemployment Benefits, Current
Compensation and benefits payable
CompensationAndBenefitsPayable
Compensation and benefits payable
Provision for Loss on Contracts
Provision for Loss on Contracts
Operating Lease, Liability, Current
Operating Lease, Liability, Current
Accrued severance payments
Accrued severance payments
Accrued severance payments
Accrued lease turnover - current
Accrued lease turnover - current
Accrued lease turnover - current
Accrued interest payable on debt
Interest Payable, Current
Other accrued liabilities
Other Accrued Liabilities, Current
Accounts payable and accrued liabilities
Accounts Payable and Accrued Liabilities, Current
Components of Deferred Tax Assets and Liabilities [Abstract]
Deferred Tax Assets, Employee Benefits Costs
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Benefits
Deferred Tax Assets, Inventory
Deferred Tax Assets, Inventory
Deferred Tax Assets, Property, Plant and Equipment
Deferred Tax Assets, Property, Plant and Equipment
Deferred Tax Assets, Net Operating Loss and Credit Carryforwards
Deferred Tax Assets, Operating Loss Carryforwards
Deferred Tax Assets, Accrued Expenses
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities
Deferred Tax Assets, Long-Term Debt and Financing Costs
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Other
Deferred Tax Asset, Lease Liability
Deferred Tax Asset, Lease Liability
Deferred Tax Asset, Lease Liability
Deferred Tax Assets, Other
Deferred Tax Assets, Tax Deferred Expense, Other
Deferred Tax Assets, Gross
Deferred Tax Assets, Gross
Deferred Tax Assets, Valuation Allowance
Deferred Tax Assets, Valuation Allowance
Deferred Tax Assets, Net of Valuation Allowance
Deferred Tax Assets, Net of Valuation Allowance
Deferred Tax Liabilities, Intangible Assets
Deferred Tax Liabilities, Intangible Assets
Deferred Tax Liability, Lease Asset
Deferred Tax Liability, Lease Asset
Deferred Tax Liability, Lease Asset
Deferred Tax Liabilities, Prepaid Expenses
Deferred Tax Liabilities, Deferred Expense, Other Capitalized Costs
Deferred Tax Liabilities
Deferred Tax Liabilities, Net
Effective Income Tax Rate Reconciliation, Deduction, Percent [Abstract]
Income Tax Authority [Axis]
Income Tax Authority [Axis]
Income Tax Authority [Domain]
Income Tax Authority [Domain]
Domestic Tax Authority [Member]
Domestic Tax Authority [Member]
State and Local Jurisdiction [Member]
State and Local Jurisdiction [Member]
Federal Statutory Income Tax Rate, Percent
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent
Effective Income Tax Rate Reconciliation, State Income Tax Expense, Net of Federal Benefit, Percent
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent
Effective Income Tax Rate Reconciliation, Gain on Early Extinguishment of Debt, Percent
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent
Effective Income Tax Rate Reconciliation, Interest Expense, Percent
Effective Income Tax Rate Reconciliation, Deduction, Other, Percent
Effective Income Tax Rate Reconciliation, Uncertain Tax Positions
Effective Income Tax Rate Reconciliation, Tax Contingency, Percent
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Percent
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Percent
Effective Income Tax Rate Reconciliation, Percent
Effective Income Tax Rate Reconciliation, Percent
Leases [Abstract]
Lessee, Operating Leases [Text Block]
Lessee, Operating Leases [Text Block]
Restructuring and Related Activities [Abstract]
Special Charges
Restructuring and Related Activities Disclosure [Text Block]
Scenario, Forecast [Member]
Scenario, Forecast [Member]
Low Enriched Uranium Segment [Member]
Low Enriched Uranium Segment [Member]
Low Enriched Uranium Segment [Member]
Government [Member]
Government [Member]
Minimum [Member]
Minimum [Member]
Maximum [Member]
Maximum [Member]
Revenue, nonmonetary transaction
Nonmonetary Transaction, Gross Operating Revenue Recognized
Nonmonetary transaction, amount of barter transaction
Nonmonetary Transaction, Amount of Barter Transaction
Advances from customers, noncurrent
Deferred Revenue, Noncurrent
Deferred revenue, revenue recognized
Deferred Revenue, Revenue Recognized
Separative work units owed to others noncurrent
Separative work units owed to others noncurrent
Separative work units owed to others noncurrent
Government cost share portion
Government cost share portion
Anticipated government cost share portion of new contract
Company cost share portion
Company cost share portion
Anticipated company cost share portion of new government contract
Government cost obligation
Government cost obligation
Government cost obligation on contract
Government spending authorization
Government spending authorization
Government spending authorization on contract
Loss on contracts
Loss on Contracts
Provision for loss on contracts, noncurrent
Provision for loss on contracts, noncurrent
Provision for loss on contracts, noncurrent
Litigation settlement, amount awarded from other party
Litigation Settlement, Amount Awarded from Other Party
Proceeds from Customers
Proceeds from Customers
Advances from customers
Customer Advances, Current
Gain (loss) related to litigation settlement
Gain (Loss) Related to Litigation Settlement
Revenue, remaining performance obligation, amount
Revenue, Remaining Performance Obligation, Amount
Property, Plant and Equipment
Property, Plant and Equipment Disclosure [Text Block]
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments [Table]
Schedule of Long-term Debt Instruments [Table]
Long-term Debt, Type [Axis]
Long-term Debt, Type [Axis]
Long-term Debt, Type [Domain]
Long-term Debt, Type [Domain]
Senior Notes [Member]
Senior Notes [Member]
Payment in Kind (PIK) Note [Member]
Payment in Kind (PIK) Note [Member]
Debt Instrument [Axis]
Debt Instrument [Axis]
Debt Instrument, Name [Domain]
Debt Instrument, Name [Domain]
Variable Rate [Axis]
Variable Rate [Axis]
Variable Rate [Domain]
Variable Rate [Domain]
Debt Instrument, Redemption, Period [Axis]
Debt Instrument, Redemption, Period [Axis]
Debt Instrument, Redemption, Period [Domain]
Debt Instrument, Redemption, Period [Domain]
Debt Instrument [Line Items]
Debt Instrument [Line Items]
Long-term debt, face amount
Debt Instrument, Face Amount
Long-term debt, interest
Other Long-term Debt
Long-term debt, carrying amount
Long-term Debt, Gross
Deferred issuance costs
Debt Issuance Costs, Noncurrent, Net
Long-term debt, current
Long-term Debt, Current Maturities
Long-term debt
Long-term Debt
Inventory, Net [Abstract]
Inventories
Inventory Disclosure [Text Block]
Lessee, Operating Lease, Liability, Maturity [Table Text Block]
Lessee, Operating Lease, Liability, Maturity [Table Text Block]
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
Fair Value Disclosures [Abstract]
Fair Value Measurements, Recurring and Nonrecurring [Table]
Fair Value Measurements, Recurring and Nonrecurring [Table]
Measurement Frequency [Axis]
Measurement Frequency [Axis]
Fair Value, Measurement Frequency [Domain]
Fair Value, Measurement Frequency [Domain]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt, long-term and short-term, combined carrying value
Debt, Long-term and Short-term, Combined Amount
Long-term debt, fair value
Long-term Debt, Fair Value
Restrictions on Cash and Cash Equivalents [Table]
Restrictions on Cash and Cash Equivalents [Table]
Restricted Cash and Cash Equivalents [Axis]
Restricted Cash and Cash Equivalents [Axis]
Cash and Cash Equivalents [Domain]
Cash and Cash Equivalents [Domain]
Other financial assurance [Member]
Other financial assurance [Member]
Other financial assurance [Member]
ARO financial assurance [Member]
ARO financial assurance [Member]
ARO financial assurance [Member]
Workers compensation financial assurance [Member]
Workers compensation financial assurance [Member]
Workers compensation financial assurance [Member]
Lease turnover financial assurance [Member]
Lease turnover financial assurance [Member]
Lease turnover financial assurance [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash included in other current assets
Restricted Cash and Cash Equivalents, Current
Restricted cash included in other long-term assets
Restricted Cash and Cash Equivalents, Noncurrent
Summary of Significant Accounting Policies [Abstract]
Summary of Significant Accounting Policies [Abstract]
Significant Accounting Policies
Significant Accounting Policies [Text Block]
Earnings Per Share [Abstract]
Net Income (Loss) Per Share
Earnings Per Share [Text Block]
Retirement Benefits, Description [Abstract]
Pension and Postretirement Health and Life Benefits
Pension and Other Postretirement Benefits Disclosure [Text Block]
Use of Estimates, Policy [Policy Text Block]
Use of Estimates, Policy [Policy Text Block]
Cash and Cash Equivalents, Policy [Policy Text Block]
Cash and Cash Equivalents, Policy [Policy Text Block]
Inventory, Policy [Policy Text Block]
Inventory, Policy [Policy Text Block]
Income Tax, Policy [Policy Text Block]
Income Tax, Policy [Policy Text Block]
Property, Plant and Equipment, Policy [Policy Text Block]
Property, Plant and Equipment, Policy [Policy Text Block]
Intangible Assets, Policy [Policy Text Block]
Goodwill and Intangible Assets, Policy [Policy Text Block]
Fair Value of Financial Instruments, Policy [Policy Text Block]
Fair Value of Financial Instruments, Policy [Policy Text Block]
Revenue Recognition, Policy
Revenue Recognition, Policy [Policy Text Block]
Advanced Technology Costs, Policy [Policy Text Block]
Research and Development Expense, Policy [Policy Text Block]
Pension and Other Postretirement Plans, Policy [Policy Text Block]
Pension and Other Postretirement Plans, Policy [Policy Text Block]
Stock-based Compensation, Policy [Policy Text Block]
Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]
New Accounting Pronouncements, Policy [Policy Text Block]
New Accounting Pronouncements, Policy [Policy Text Block]
Statement of Stockholders' Equity [Abstract]
Equity Components [Axis]
Equity Components [Axis]
Equity Component [Domain]
Equity Component [Domain]
Preferred Stock [Member]
Preferred Stock [Member]
Common Stock [Member]
Common Stock [Member]
Excess of Capital over Par Value [Member]
Additional Paid-in Capital [Member]
Accumulated Deficit [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
AOCI Attributable to Parent [Member]
Class of Stock [Axis]
Class of Stock [Axis]
Class of Stock [Domain]
Class of Stock [Domain]
Preferred Series B [Member]
Preferred Class B [Member]
Common Class A [Member]
Common Class A [Member]
Common Class B [Member]
Common Class B [Member]
Beginning Balance
Stockholders' Equity Attributable to Parent
Adoption of ASC 606 as of January 1, 2018
Contract with Customer, Asset, Cumulative Catch-up Adjustment to Revenue, Change in Measure of Progress
Net income (loss)
Net Income (Loss) Attributable to Parent
Stock issued during period
Stock Issued During Period, Value, New Issues
Other comprehensive income, net of tax
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax
Restricted and other common stock issued, net of amortization
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures
Ending Balance
Property, Plant and Equipment
Property, Plant and Equipment [Table Text Block]
Assets and Property Sold [Table Text Block]
Assets and Property Sold [Table Text Block]
Assets and Property Sold [Table Text Block]
Statement of Cash Flows [Abstract]
Other Significant Noncash Transaction [Axis]
Other Significant Noncash Transaction [Axis]
Other Significant Noncash Transaction, Name [Domain]
Other Significant Noncash Transaction, Name [Domain]
Deferred financing costs included in accounts payable and accrued liabilities [Member]
Deferred financing costs included in accounts payable and accrued liabilities [Member]
Deferred financing costs included in accounts payable and accrued liabilities [Member]
Right to use lease assets acquired under operating lease [Member]
Right to use lease assets acquired under operating lease [Member]
Right to use lease assets acquired under operating lease [Member]
Disposal of right to use lease assets for early termination [Member]
Disposal of right to use lease assets for early termination [Member]
Disposal of right to use lease assets for early termination [Member]
Exchange of debt for Class A common stock [Member]
Exchange of debt for Class A common stock [Member]
Exchange of debt for Class A common stock
Cash Flows from Operating Activities
Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract]
Adjustments to reconcile net income (loss) to net cash (used in) operating activities:
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Depreciation and amortization
Depreciation, Depletion and Amortization
Accrued loss on long-term contract
Immediate recognition of retirement benefit plans (gains) losses, net
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)
Interest on paid-in-kind toggle notes
Paid-in-Kind Interest
Gain on early extinguishment of debt
Gain (Loss) on Extinguishment of Debt
Gain on sale of assets
Gain (Loss) on Sale of Assets and Asset Impairment Charges
Inventory valuation adjustments
Other Noncash Expense
Changes in operating assets and liabilities:
Increase (Decrease) in Operating Liabilities [Abstract]
Accounts receivable – (increase) decrease
Increase (Decrease) in Accounts Receivable
Inventories, net – (increase) decrease
Increase (Decrease) in Inventories
Payables under SWU purchase agreements – increase (decrease)
Increase (Decrease) in Accounts Payable, Trade
Deferred revenue, net of deferred costs – increase (decrease)
Increase Decrease in Deferred Revenue, Net of Deferred Costs
Increase Decrease in Deferred Revenue, Net of Deferred Costs
Accounts payable and other liabilities – increase (decrease)
Increase (Decrease) in Accounts Payable and Accrued Liabilities
Pension and postretirement liabilities - increase (decrease)
Increase (Decrease) in Obligation, Pension Benefits
Other, net
Increase (Decrease) in Other Operating Assets and Liabilities, Net
Net Cash (Used in) Operating Activities
Net Cash Provided by (Used in) Operating Activities
Cash Flows Provided by Investing Activities
Net Cash Provided by (Used in) Investing Activities [Abstract]
Capital expenditures
Payments to Acquire Property, Plant, and Equipment
Payments for deferred financing costs
Payments of Financing Costs
Proceeds from sales of assets
Proceeds from Sale of Productive Assets
Net Cash Provided by (Used in) Investing Activities
Net Cash Provided by (Used in) Investing Activities
Cash Flows Used in Financing Activities
Net Cash Provided by (Used in) Financing Activities [Abstract]
Payment of interest classified as debt
Repayments of Debt
Repurchase of debt
Early Repayment of Senior Debt
Principal payments on debt
Repayments of Secured Debt
Payments for deferred financing costs
Payment of Financing and Stock Issuance Costs
Payment of securities transaction costs
Payment for Debt Extinguishment or Debt Prepayment Cost
Net Cash (Used in) Financing Activities
Net Cash Provided by (Used in) Financing Activities
Decrease in cash, cash equivalents and restricted cash
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect
Cash, cash equivalents and restricted cash, start of period
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents
Cash, cash equivalents and restricted cash, end of period
Supplemental Cash Flow Information:
Supplemental Cash Flow Information [Abstract]
Interest paid
Interest Paid, Excluding Capitalized Interest, Operating Activities
Conversion of interest payable-in-kind to long-term debt
Notes Issued
Exchange of debt for Series B preferred stock
Stock Issued
Other Significant Noncash Transaction, Value of Consideration Received
Other Significant Noncash Transaction, Value of Consideration Received
Other Significant Noncash Transaction, Value of Consideration Given
Other Significant Noncash Transaction, Value of Consideration Given
Consolidated Balance Sheet [Abstract]
Consolidated Balance Sheet [Abstract]
Preferred Stock, Par Value Per Share
Preferred Stock, Par or Stated Value Per Share
Preferred Stock, Shares Authorized
Preferred Stock, Shares Authorized
Preferred Stock, Dividend Rate, Percentage
Preferred Stock, Dividend Rate, Percentage
Preferred Stock, Shares Issued
Preferred Stock, Shares Issued
Preferred Stock, Liquidation Preference, Value
Preferred Stock, Liquidation Preference, Value
Common Stock, Par or Stated Value Per Share
Common Stock, Par or Stated Value Per Share
Common Stock, Shares Authorized
Common Stock, Shares Authorized
Common Stock, Shares, Issued
Common Stock, Shares, Issued
Accumulated Depreciation, Property, Plant, and Equipment
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Finite-Lived Intangible Assets [Table]
Schedule of Finite-Lived Intangible Assets [Table]
Finite-Lived Intangible Assets by Major Class [Axis]
Finite-Lived Intangible Assets by Major Class [Axis]
Finite-Lived Intangible Assets, Major Class Name [Domain]
Finite-Lived Intangible Assets, Major Class Name [Domain]
Contract-Based Intangible Assets [Member]
Contract-Based Intangible Assets [Member]
Customer-Related Intangible Assets [Member]
Customer-Related Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets [Line Items]
Amortizable intangible assets, gross
Intangible Assets, Gross (Excluding Goodwill)
Accumulated intangible asset amortization
Finite-Lived Intangible Assets, Accumulated Amortization
Amortizable intangible assets, net
Intangible Assets, Net (Excluding Goodwill)
Average useful life of finite-lived intangible assets
Finite-Lived Intangible Asset, Useful Life
Defined Benefit Plan, Information about Plan Assets [Abstract]
Fair Value Hierarchy and NAV [Axis]
Fair Value Hierarchy and NAV [Axis]
Fair Value Hierarchy and NAV [Domain]
Fair Value Hierarchy and NAV [Domain]
Level 1 [Member]
Fair Value, Inputs, Level 1 [Member]
Fair Value, Inputs, Level 2 [Member]
Fair Value, Inputs, Level 2 [Member]
Bond Mutual Funds
Bond Mutual Funds
Bond Mutual Funds
US Government Securities
US Government Securities, at Carrying Value
Corporate Debt
Corporate debt
Corporate debt
Municipal Bonds
Municipal Debt Securities, at Carrying Value
Mortgage and asset backed securities
Mortgage and asset backed securities
Mortgage and asset backed securities
Fair Value of Investments by Hierarchy Level
Fair value of investments by hierarchy level
Fair value of investments by hierarchy level
Accrued Interest Receivable
Accrued interest receivable
Accrued interest receivable
Unsettled Transactions Receivable
Unsettled transactions receivable
Unsettled transactions receivable
Defined Benefit Plan, Plan Assets, Amount
Defined Benefit Plan, Plan Assets, Amount
Schedule of Stock by Class [Table]
Schedule of Stock by Class [Table]
Award Type [Axis]
Award Type [Axis]
Equity Award [Domain]
Equity Award [Domain]
Class of Stock [Line Items]
Class of Stock [Line Items]
Preferred Stock, Liquidation Preference Per Share
Preferred Stock, Liquidation Preference Per Share
Preferred stock
Preferred Stock, Value, Issued
Stock Issued During Period, Shares, New Issues
Stock Issued During Period, Shares, New Issues
Conversion of Stock, Shares Converted
Conversion of Stock, Shares Converted
Common Stock, Capital Shares Reserved for Future Issuance
Common Stock, Capital Shares Reserved for Future Issuance
Preferred stock dividend condition - minimum pension funding
Preferred stock dividend condition - minimum pension funding
Preferred stock dividend condition - minimum pension funding
Preferred stock dividend condition - minimum net income preceding quarter
Preferred stock dividend condition - minimum net income preceding quarter
Preferred stock dividend condition - minimum net income preceding quarter
Preferred stock dividend condition - minimum free cash flow preceding four quarters
Preferred stock dividend condition - minimum free cash flow preceing four quarters
Preferred stock dividend condition - minimum free cash flow preceding four quarters
Preferred stock dividend condition - minimum cash balance preceding quarter
Preferred stock dividend condition - minimum cash balance preceding quarter
Preferred stock dividend condition - minimum cash balance preceding quarter
Preferred Stock, Cumulative Undeclared Dividend
Preferred Stock, Cumulative Undeclared Dividend
Preferred Stock, Cumulative Undeclared Dividend
Operating Loss Carryforwards
Operating Loss Carryforwards
Common Stock Ownership Enabling Preferred Stock Purchase Rights
Common Stock Ownership Enabling Preferred Stock Purchase Rights
Common Stock Ownership Enabling Preferred Stock Purchase Rights
Common Stock Ownership Enabling Preferred Stock Purchase Rights, Incremental
Common Stock Ownership Enabling Preferred Stock Purchase Rights, Incremental
Common Stock Ownership Enabling Preferred Stock Purchase Rights, Incremental
Segment Reporting Information, Revenue for Reportable Segment [Abstract]
Schedule of Segment Reporting Information, by Segment [Table]
Schedule of Segment Reporting Information, by Segment [Table]
Separative Work Units [Member]
Separative Work Units [Member]
Separative Work Units (SWU) [Member] - 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 the uranium-235 isotope (“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 natural uranium used in the production of LEU under this formula is referred to as its uranium component.
Uranium [Member]
Uranium [Member]
Uranium [Member] - Natural uranium or the uranium component of Low Enriched Uranium (LEU).
Product [Member]
Product [Member]
Service [Member]
Service [Member]
Contract Services Segment [Member]
Contract Services Segment [Member]
Contract Services Segment [Member]
Segment Reporting Information [Line Items]
Segment Reporting Information [Line Items]
Revenue
Revenue from Contract with Customer, Excluding Assessed Tax
Gross Profit
Gross Profit
Statement of Financial Position [Abstract]
ASSETS
Assets [Abstract]
Current Assets
Assets, Current [Abstract]
Cash and cash equivalents
Cash and Cash Equivalents, at Carrying Value
Inventories
Inventory, Net
Deferred costs associated with deferred revenue
Other Deferred Costs, Net
Deposits for financial assurance
Deposits Assets, Current
Other current assets
Prepaid Expense and Other Assets, Current
Total current assets
Assets, Current
Deposits for surety bonds
Deposits Assets, Noncurrent
Intangible assets
Other long-term assets
Other Assets, Noncurrent
Total Assets
Assets
LIABILITIES AND STOCKHOLDERS’ EQUITY (DEFICIT)
Liabilities and Equity [Abstract]
Current Liabilities
Liabilities, Current [Abstract]
Accounts payable and accrued liabilities
Payables under SWU purchase agreements
Accounts Payable, Current
Inventories owed to customers and suppliers
Inventories owed to customers and suppliers
Cost of SWU and uranium inventories owed related to the transfer of title from USEC to customer at fabricator whereby fabricator has elected to order less material from USEC than is required. Amounts owed are satisfied when fabricator orders future bulk deliveries.
Deferred revenue and advances from customers
Deferred Revenue and Credits, Current
Current debt
Debt, Current
Total current liabilities
Liabilities, Current
Postretirement health and life benefit obligations
Liability, Other Postretirement Defined Benefit Plan, Noncurrent
Pension benefit liabilities
Liability, Defined Benefit Pension Plan, Noncurrent
Advances from customers
Other long-term liabilities
Other Liabilities, Noncurrent
Total liabilities
Liabilities, Noncurrent
Commitments and contingencies (Note 11)
Commitments and Contingencies
Stockholders' Deficit
Common stock
Common Stock, Value, Issued
Excess of capital over par value
Additional Paid in Capital
Accumulated deficit
Retained Earnings (Accumulated Deficit)
Accumulated other comprehensive income (loss), net of tax
Accumulated Other Comprehensive Income (Loss), Net of Tax
Total stockholders' deficit
Total Liabilities and Stockholders’ Equity (Deficit)
Liabilities and Equity
United States
UNITED STATES
Belgium
BELGIUM
Japan
JAPAN
Other Foreign
Other Foreign [Member]
Other Foreign [Member]
Foreign [Member]
Foreign [Member]
Foreign [Member]
Total foreign
Non-US [Member]
Quarterly Results of Operations (Unaudited) [Abstract]
Quarterly Results of Operations (Unaudited) [Abstract]
Schedule of Quarterly Financial Information [Table Text Block]
Quarterly Financial Information [Table Text Block]
Income Tax Disclosure [Abstract]
Foreign Tax Authority [Member]
Foreign Tax Authority [Member]
Current Income Tax Expense (Benefit)
Current Income Tax Expense (Benefit)
Provision (benefit) for income taxes
Income Tax Expense (Benefit)
Share-based Compensation [Abstract]
Stock-Based Compensation
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]
Intangible Assets Disclosure [Abstract]
Intangible Assets Disclosure [Abstract]
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months
Finite-Lived Intangible Assets, Amortization Expense, Year Two
Finite-Lived Intangible Assets, Amortization Expense, Year Two
Finite-Lived Intangible Assets, Amortization Expense, Year Three
Finite-Lived Intangible Assets, Amortization Expense, Year Three
Finite-Lived Intangible Assets, Amortization Expense, Year Four
Finite-Lived Intangible Assets, Amortization Expense, Year Four
Finite-Lived Intangible Assets, Amortization Expense, Year Five
Finite-Lived Intangible Assets, Amortization Expense, Year Five
Finite-Lived Intangible Assets, Amortization Expense, after Year Five
Finite-Lived Intangible Assets, Amortization Expense, after Year Five
Finite-Lived Intangible Assets, Net
Finite-Lived Intangible Assets, Net
Segment Information
Segment Reporting Disclosure [Text Block]
Retirement Benefits [Abstract]
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months
Defined Benefit Plan, Expected Future Benefit Payment, Next Twelve Months
Defined Benefit Plan, Expected Future Benefit Payment, Year Two
Defined Benefit Plan, Expected Future Benefit Payment, Year Two
Defined Benefit Plan, Expected Future Benefit Payment, Year Three
Defined Benefit Plan, Expected Future Benefit Payment, Year Three
Defined Benefit Plan, Expected Future Benefit Payment, Year Four
Defined Benefit Plan, Expected Future Benefit Payment, Year Four
Defined Benefit Plan, Expected Future Benefit Payment, Year Five
Defined Benefit Plan, Expected Future Benefit Payment, Year Five
Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter
Defined Benefit Plan, Expected Future Benefit Payment, Five Fiscal Years Thereafter
Liability for Uncertain Tax Positions, Noncurrent
Liability for Uncertainty in Income Taxes, Noncurrent
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions
Foreign
Schedule of Defined Benefit Plans Disclosures [Table]
Schedule of Defined Benefit Plans Disclosures [Table]
Pension Plan, Defined Benefit [Member]
Postretirement Health and Life Benefits Plans [Member]
Service costs
Defined Benefit Plan, Service Cost
Interest costs
Defined Benefit Plan, Interest Cost
Expected return on plan assets (gains)
Defined Benefit Plan, Expected Return (Loss) on Plan Assets
Amortization of prior service costs (credits), net
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)
Actuarial (gains) losses, net
Defined Benefit Plan, Amortization of Gain (Loss)
Defined Benefit Plan, Actuarial (Gain) Loss From Remeasurement
Loss on plan changes resulting from legal settlement
Defined Benefit Plan, Other Cost (Credit)
Net periodic benefit cost (credit)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)
Restructuring Type [Axis]
Restructuring Type [Axis]
Type of Restructuring [Domain]
Type of Restructuring [Domain]
Contract Termination [Member]
Contract Termination [Member]
Other Restructuring [Member]
Other Restructuring [Member]
Income Statement Location [Axis]
Income Statement Location [Axis]
Income Statement Location [Domain]
Income Statement Location [Domain]
Termination benefit costs
Severance Costs
Payments for one-time termination benefits
Payments for Restructuring
Restructuring liability
Restructuring Reserve
Restructuring and Related Costs
Restructuring and Related Costs [Table Text Block]
Schedule of Financial Instruments Recorded at Fair Value
Fair Value Measurement and Measurement Inputs, Recurring and Nonrecurring [Text Block]
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year
Lessee, Operating Lease, Liability, Payments, Due Year Two
Lessee, Operating Lease, Liability, Payments, Due Year Two
Lessee, Operating Lease, Liability, Payments, Due Year Three
Lessee, Operating Lease, Liability, Payments, Due Year Three
Lessee, Operating Lease, Liability, Payments, Due Year Four
Lessee, Operating Lease, Liability, Payments, Due Year Four
Lessee, Operating Lease, Liability, Payments, Due Year Five
Lessee, Operating Lease, Liability, Payments, Due Year Five
Lessee, Operating Lease, Liability, Payments, Due after Year Five
Lessee, Operating Lease, Liability, Payments, Due after Year Five
Lessee, Operating Lease, Liability, Payments, Due
Lessee, Operating Lease, Liability, Payments, Due
Lessee, Operating Lease, Liability, Undiscounted Excess Amount
Lessee, Operating Lease, Liability, Undiscounted Excess Amount
Operating Lease, Liability
Operating Lease, Liability
Depreciation
Sale price assets and property, net
Sale price assets and property, net
Sale price assets and property, net of auction fees and other costs
Net carrying value of assets retired
Net carrying value of assets retired
Net carrying value of assets retired
Gain (Loss) on Disposition of Property Plant Equipment
Gain (Loss) on Disposition of Property Plant Equipment
Proceeds from Sale of Property, Plant, and Equipment
Proceeds from Sale of Property, Plant, and Equipment
Sale proceeds included in accounts receivable
Sale proceeds included in accounts receivable
Sale proceeds included in accounts receivable
Defined Benefit Plan, Effect of One-Percentage Point Change in Assumed Health Care Cost Trend Rate [Abstract]
Defined Benefit Plan, Effect of One Percentage Point Increase on Accumulated Postretirement Benefit Obligation
Defined Benefit Plan, Effect of One Percentage Point Increase on Accumulated Postretirement Benefit Obligation
Defined Benefit Plan, Effect of One Percentage Point Decrease on Accumulated Postretirement Benefit Obligation
Defined Benefit Plan, Effect of One Percentage Point Decrease on Accumulated Postretirement Benefit Obligation
Defined Benefit Plan, Effect of One Percentage Point Increase on Service and Interest Cost Components
Defined Benefit Plan, Effect of One Percentage Point Increase on Service and Interest Cost Components
Defined Benefit Plan, Effect of One Percentage Point Decrease on Service and Interest Cost Components
Defined Benefit Plan, Effect of One Percentage Point Decrease on Service and Interest Cost Components
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months
Schedule of Debt
Schedule of Debt [Table Text Block]
Repurchase of debt
Extinguishment of Debt, Amount
Debt instrument interest rate
Debt Instrument, Interest Rate, Stated Percentage
Preferred stock, shares issued
Preferred stock, liquidation preference per share
Cash paid in exchange
Cash paid in exchange
Cash paid in exchange
Gain on early extinguishment of debt
Transaction costs
Professional Fees
Write off of deferred financing cost
Write off of Deferred Debt Issuance Cost
Subordination to credit facility, facility total
Subordination to credit facility, facility total
Subordination to credit facility, facility total
Subordination to credit facility, facility maximum net borrowing
Subordination to credit facility, facility maximum net borrowing
Subordination to credit facility, facility maximum net borrowing
Maturities of Senior Debt
Maturities of Senior Debt
Debt Instrument, Periodic Payment, Interest
Debt Instrument, Periodic Payment, Interest
Revenue from External Customers by Geographic Areas
Revenue from External Customers by Geographic Areas [Table Text Block]
Segment Reporting Information
Schedule of Segment Reporting Information, by Segment [Table Text Block]
Commitments and Contingencies Disclosure [Abstract]
Claim filed, unrecorded gain contingency,
Gain Contingency, Unrecorded Amount
Commitments and Contingencies
Commitments and Contingencies Disclosure [Text Block]
Tax Period [Axis]
Tax Period [Axis]
Tax Period [Domain]
Tax Period [Domain]
Tax Year 2018 [Member]
Tax Year 2018 [Member]
Deferred Tax Asset, Increase (Decrease), Amount
Deferred Tax Asset, Increase (Decrease), Amount
Deferred Tax Asset, Increase (Decrease), Amount
Increase (decrease) in deferred tax asset valuation allowance
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount
Business Interest Expense Carryforward
Business Interest Expense Carryforward
Business Interest Expense Carryforward
Cancellation of debt income for tax
Cancellation of debt income for tax
Cancellation of debt income for tax
Annual limitation of NOL carryforwards and tax credits generated prior to ownership change
Annual limitation of NOL carryforwards and tax credits generated prior to ownership change
Annual limitation of net operating loss carryforwards and tax credits generated prior to ownership change (that are not reduced by attribute reduction)
Provision (benefit) for income taxes
Other Comprehensive Income (Loss), Tax
Other Comprehensive Income (Loss), Tax
Income Tax Examination, Penalties and Interest Expense Reduction
Income Tax Examination, Penalties and Interest Expense
Unrecognized Tax Benefits, Income Tax Penalties Expense Reduction
Unrecognized Tax Benefits, Income Tax Penalties Expense
Income Tax Examination, Penalties and Interest Accrued
Income Tax Examination, Penalties and Interest Accrued
Contract with Customer, Asset and Liability
Contract with Customer, Asset and Liability [Table Text Block]
Inventory write-down
Inventory Write-down
Schedule of Income Per Share [Table]
Schedule of Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Table]
Income Per Share Calculation [Line Items]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Preferred stock dividends, undeclared and cumulative
Preferred Stock Dividends, Income Statement Impact
Net income (loss) allocable to common stockholders
Net Income (Loss) Available to Common Stockholders, Basic
Average number of shares outstanding, basic
Weighted Average Number of Shares Outstanding, Basic
Potentially dilutive shares related to stock options
Weighted Average Number Diluted Shares Outstanding Adjustment
Average number of shares outstanding, diluted
Weighted Average Number of Shares Outstanding, Diluted
Net loss per share - basic and diluted
Earnings Per Share, Basic and Diluted
Net income (loss) per common share - basic
Earnings Per Share, Basic
Net income (loss) per common share - diluted
Earnings Per Share, Diluted
Antidilutive securities excluded from computation of earnings per share
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Options with exercise price greater than market price
Options with exercise price greater than market price
Options with exercise price greater than market price
Deferred costs – increase (decrease)
Increase (Decrease) in Deferred Charges
Loss on contracts
Deferred revenue
Deferred Revenue
Deferred revenue – increase (decrease)
Increase (Decrease) in Deferred Revenue
Advances from customers
Contract with Customer, Liability, Current
Customer advances – increase (decrease)
Increase (Decrease) in Customer Advances
Deferred revenue and advances from customers
Deferred revenue and customer advances – increase (decrease)
Increase (Decrease) in Deferred Revenue and Customer Advances and Deposits
Advances from customers, noncurrent - increase (decrease)
Increase (decrease) in Advances from customers, noncurrent
Increase (decrease) in Advances from customers, noncurrent
Deferred costs, additions
Deferred Cost Additions
Deferred Cost Additions
Deferred costs, costs recognized
Deferred Costs Costs Recognized
Deferred Costs, Costs Recognized
Deferred revenue, additions
Deferred Revenue, Additions
Deferred revenue, revenue recognized
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss)
Comprehensive Income (Loss) Note [Text Block]
Separative work units inventory
Separative work units inventory
Carrying amount as of the balance sheet date of separative work unit ("SWU") inventory. SWU is held as the SWU component of low enriched uranium. A SWU is the standard measure of uranium enrichment using a standard formula derived from the physics of enrichment. SWU costs are based on production costs and purchase costs. SWU inventory is valued at the lower of cost or market.
Uranium inventory
Uranium Inventory
Carrying amount as of the balance sheet date of uranium inventory. Uranium is held in the form of natural uranium and as the uranium component of low enriched uranium. Uranium inventory is valued at the lower of cost or market.
Inventories
Separative work units owed to customers and suppliers
Separative work units owed to customers and suppliers
Separative work units owed to customers and suppliers
Uranium owed to customers and suppliers
Uranium owed to customers and suppliers
Uranium owed to customers and suppliers
Inventories owed to customers and suppliers
Separative work units net of liability
Separative work units net of liability
Separative work units inventory net of liability
Uranium inventory net of liability
Uranium inventory net of liability
Uranium inventory net of liability
Inventories, net
Inventory net of Liability
Inventory net of Liability
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross
Share-based Goods and Nonemployee Services Transaction, Valuation Method, Risk Free Interest Rate
Share-based Goods and Nonemployee Services Transaction, Valuation Method, Risk Free Interest Rate
Share-based Goods and Nonemployee Services Transaction, Valuation Method, Expected Volatility Rate
Share-based Goods and Nonemployee Services Transaction, Valuation Method, Expected Volatility Rate
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term, Simplified Method
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term, Simplified Method
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value
Common Stock, Shares, Outstanding
Common Stock, Shares, Outstanding
Preferred Stock, Shares Outstanding
Preferred Stock, Shares Outstanding
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table]
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table]
Exercise Price Range [Axis]
Exercise Price Range [Axis]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Domain]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Domain]
Option Group One [Member]
Option Group One [Member]
Option Group One [Member]
Option Group Two [Member]
Option Group Two [Member]
Option Group Two [Member]
Option Group Three [Member]
Option Group Three [Member]
Option Group Three [Member]
Option Group Four [Member]
Option Group Four [Member]
Option Group Four [Member]
Option Group Five [Member]
Option Group Five [Member]
Option Group Five [Member]
Option Group Six [Member]
Option Group Six [Member]
Option Group Six [Member]
Option Group Seven [Member]
Option Group Seven [Member]
Option Group Seven [Member]
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 [Line Items]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Exercise Price
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Exercise Price
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Remaining Contractual Term
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Remaining Contractual Term
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Exercisable Options
Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]
Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]
Share-based Compensation, Stock Options, Activity [Table Text Block]
Share-based Compensation, Stock Options, Activity [Table Text Block]
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Disclosure [Line Items]
Schedule of Changes in Projected Benefit Obligations [Table Text Block]
Schedule of Changes in Projected Benefit Obligations [Table Text Block]
Schedule of Net Benefit Costs [Table Text Block]
Schedule of Net Benefit Costs [Table Text Block]
Schedule of Assumptions Used [Table Text Block]
Schedule of Assumptions Used [Table Text Block]
Schedule of Health Care Cost Trend Rates [Table Text Block]
Schedule of Health Care Cost Trend Rates [Table Text Block]
Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates [Table Text Block]
Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates [Table Text Block]
Schedule of Allocation of Plan Assets [Table Text Block]
Schedule of Allocation of Plan Assets [Table Text Block]
Schedule of Expected Benefit Payments [Table Text Block]
Schedule of Expected Benefit Payments [Table Text Block]
Fair Value Measurements
Fair Value Disclosures [Text Block]
Restricted Stock or Unit Expense
Restricted Stock or Unit Expense
Stock or Unit Option Plan Expense
Stock or Unit Option Plan Expense
Stock Appreciation Rights Expense
Stock Appreciation Rights Expense
Stock Appreciation Rights Expense
Allocated Share-based Compensation Expense
Allocated Share-based Compensation Expense
Schedule of Intangible Assets and Excess Reorganization Value [Table Text Block]
Schedule of Intangible Assets and Excess Reorganization Value [Table Text Block]
Schedule of Intangible Assets and Excess Reorganization Value [Table Text Block]
Finite-lived Intangible Assets Amortization Expense [Table Text Block]
Finite-lived Intangible Assets Amortization Expense [Table Text Block]
Defined Benefit Plan, Benefit Obligation
Defined Benefit Plan, Benefit Obligation
Defined Benefit Plan, Service Cost
Defined Benefit Plan, Interest Cost
Defined Benefit Plan, Benefit Obligation, Benefits Paid
Defined Benefit Plan, Benefit Obligation, Benefits Paid
Defined Benefit Plan, Lump Sum Benefits Paid
Defined Benefit Plan, Lump Sum Benefits Paid
Defined Benefit Plan, Lump Sum Benefits Paid
Defined Benefit Plan, Benefit Obligation, Increase for Plan Amendment
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment
Defined Benefit Plan, Benefit Obligation, Administrative Expenses Paid
Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Other Change
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)
Defined Benefit Plan, Plan Assets, Contributions by Employer
Defined Benefit Plan, Plan Assets, Contributions by Employer
Defined Benefit Plan, Funded (Unfunded) Status of Plan
Defined Benefit Plan, Funded (Unfunded) Status of Plan
Amounts Recognized In Current Liabilities
Amounts Recognized In Current Liabilities
Amounts Recognized In Current Liabilities
Amounts Recognized In Noncurrent Liabilities
Amounts Recognized In Noncurrent Liabilities
Amounts Recognized In Noncurrent Liabilities
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position
Recognized In Accumulated Other Comprehensive Income Pre Tax Prior Service Cost Credit
Recognized In Accumulated Other Comprehensive Income Pre Tax Prior Service Cost Credit
Recognized In Accumulated Other Comprehensive Income Pre Tax Prior Service Cost Credit
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Employee Stock Option [Member]
Employee Stock Option [Member]
Restricted Stock Units (RSUs) [Member]
Restricted Stock Units (RSUs) [Member]
Option Indexed to Issuer's Equity, Type [Axis]
Option Indexed to Issuer's Equity, Type [Axis]
Option Indexed to Issuer's Equity, Type [Domain]
Option Indexed to Issuer's Equity, Type [Domain]
Shares for Cancelled or Forfeited Awards
Shares for Cancelled or Forfeited Awards
Shares for Cancelled or Forfeited Awards
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized
Weighted-average period in years of costs to be recognized
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition
Restricted stock units potentially converted to common stock shares
Restricted stock units potentially converted to common stock shares
Restricted stock units potentially converted to common stock shares
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Disclosure Items [Axis]
Cash and cash equivalents
Cash and Cash Equivalents, Fair Value Disclosure
Deferred compensation asset
Cash Surrender Value, Fair Value Disclosure
Deferred compensation obligation
Obligations, Fair Value Disclosure
Document and Entity Information
Document and Entity Information
Entity Registrant Name
Entity Registrant Name
Entity Central Index Key
Entity Central Index Key
Current Fiscal Year End Date
Current Fiscal Year End Date
Document Type
Document Type
Amendment Flag
Amendment Flag
Document Period End Date
Document Period End Date
Entity Filer Category
Entity Filer Category
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Document Fiscal Year Focus
Document Fiscal Year Focus
Document Fiscal Period Focus
Document Fiscal Period Focus
Trading Symbol
Trading Symbol
Entity Small Business
Entity Small Business
Entity Emerging Growth Company
Entity Emerging Growth Company
Entity Well-known Seasoned Issuer
Entity Well-known Seasoned Issuer
Entity Shell Company
Entity Shell Company
Entity Public Float
Entity Public Float
Entity Current Reporting Status
Entity Current Reporting Status
Entity Voluntary Filers
Entity Voluntary Filers
Income Statement [Abstract]
Revenue from Contract with Customer, Excluding Assessed Tax
Revenue
Revenue from Contract with Customer, Including Assessed Tax
Cost of sales
Cost of Goods and Services Sold
Gross profit (loss)
Advanced technology license and decommissioning costs
Research and Development Expense
Selling, general and administrative
Selling, General and Administrative Expense
Amortization of intangible assets
Amortization of Intangible Assets
Special charges for workforce reductions and advisory costs
Restructuring Charges
Other (income)
Other Operating Income
Operating income (loss)
Operating Income (Loss)
Nonoperating components of net periodic benefit expense (income)
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component
Interest expense
Interest Expense, Debt
Investment income
Investment Income, Interest
Income (loss) before income taxes
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest
Net income (loss)
Net income (loss) allocable to common stockholders
Weighted-average number of shares outstanding:
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Average number of common shares outstanding, basic and diluted
Weighted Average Number of Shares Outstanding, Basic and Diluted
Average number of shares outstanding, basic
Average number of shares outstanding, diluted
Quarterly Financial Information [Text Block]
Quarterly Financial Information [Text Block]
Total Revenue
Revenues
Cost of sales
Cost of Revenue
Special charges for workforce reductions and advisory costs
Operating income (loss)
Net income (loss)
Stockholders' Equity Note Disclosure [Text Block]
Stockholders' Equity Note Disclosure [Text Block]
Defined Benefit Plan, Amounts Recognized in Other Comprehensive Income (Loss) [Abstract]
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax
Other Comprehensive (Income) Loss, Defined Benefit Plan, Prior Service Cost (Credit), Reclassification Adjustment from AOCI, before Tax
Total recognized in net periodic benefit costs (income) and other comprehensive income (loss), pre-tax
Total recognized in net periodic benefit costs (income) and other comprehensive income (loss), pre-tax
Total recognized in net periodic benefit costs (income) and other comprehensive income (loss), pre-tax
Income Taxes
Income Tax Disclosure [Text Block]
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Summary of Income Tax Contingencies [Table Text Block]
Summary of Income Tax Contingencies [Table Text Block]
Debt
Debt Disclosure [Text Block]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options, Weighted Average Exercise Price
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options, Weighted Average Exercise Price
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value
Schedule of Cash and Cash Equivalents [Table]
Schedule of Cash and Cash Equivalents [Table]
Cash and Cash Equivalents [Axis]
Cash and Cash Equivalents [Axis]
Cash and Cash Equivalents [Line Items]
Cash and Cash Equivalents [Line Items]
Total cash, cash equivalents and restricted cash
Accounts Payable and Accrued Liabilities [Text Block]
Accounts Payable and Accrued Liabilities Disclosure [Text Block]
Contract Termination [Member]
Termination benefit costs
Other restructuring costs
Other Restructuring Costs
Restructuring reserve, accrual adjustment
Restructuring Reserve, Accrual Adjustment
Restructuring cost, settled without cash
Restructuring Reserve, Settled without Cash
Restructuring liability, current
Restructuring Reserve, Current
Subsequent Events [Abstract]
Subsequent Event
Subsequent Events [Text Block]
Financial Instrument [Axis]
Financial Instrument [Axis]
Financial Instruments [Domain]
Financial Instruments [Domain]
Equity Securities [Member]
Equity Securities [Member]
Debt Securities [Member]
Debt Securities [Member]
Cash [Member]
Cash [Member]
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage
Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage
Schedule of Net Income Per Share
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Intangible Assets
Goodwill and Intangible Assets Disclosure [Text Block]
Approximate Number of Plan Participants
Approximate Number of Plan Participants
Approximate Number of Plan Participants
Defined Benefit Plan, Accumulated Benefit Obligation
Defined Benefit Plan, Accumulated Benefit Obligation
Expected defined benefit plan contributions for next fiscal year for qualified plans
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year
Expected defined benefit plan contributions for next fiscal year for non-qualified plans
Expected defined benefit plan contributions for next fiscal year for non-qualified plans
Expected defined benefit plan contributions for next fiscal year for non-qualified plans
Expected defined benefit plan contributions for next fiscal year for postretirement health and life benefit plans
Expected defined benefit plan contributions for next fiscal year for postretirement health and life benefit plans
Expected defined benefit plan contributions for next fiscal year for postretirement health and life benefit plans
Defined Contribution Plan, Cost
Defined Contribution Plan, Cost
Defined Benefit Plan, Actuarial (Gain) Loss From Remeasurement
Operating Lease, Weighted Average Remaining Lease Term
Operating Lease, Weighted Average Remaining Lease Term
Operating Lease, Weighted Average Discount Rate, Percent
Operating Lease, Weighted Average Discount Rate, Percent
Operating Lease, Right-of-Use Asset
Operating Lease, Right-of-Use Asset
Operating Lease, Liability, Noncurrent
Operating Lease, Liability, Noncurrent
Operating Lease, Expense
Operating Lease, Expense
Operating Lease, Expense Adjustment
Operating lease, expense adjustment
Operating lease, expense adjustment increase (decrease) expense
Operating Lease, Payments
Operating Lease, Payments
Operating Lease, Liability, Increase
Operating Lease, Liability, Increase
Operating Lease, Liability, Increase
Operating Lease, Liability, Decrease
Operating Lease Liability Decrease
Operating Lease Liability Decrease
Schedule of Inventories
Schedule of Inventory, Current [Table Text Block]
Increase (decrease) in restricted cash
Increase (Decrease) in Restricted Cash
Accrued lease turnover costs
Accrued lease turnover costs
Accrued lease turnover costs