Document and Entity Information - shares
3 Months Ended
Mar. 31, 2018
May 01, 2018
Document and Entity Information    
Entity Registrant Name CENTRUS ENERGY CORP  
Entity Central Index Key 0001065059  
Trading Symbol LEU  
Current Fiscal Year End Date --12-31  
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 31, 2018  
Entity Filer Category Smaller Reporting Company  
Entity Common Stock, Shares Outstanding   9,038,751
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q1