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Document and Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2016
Mar. 28, 2017
Jun. 30, 2016
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-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2016    
Entity Filer Category Smaller Reporting Company    
Entity Common Stock, Shares Outstanding   9,000,000  
Document Fiscal Year Focus 2016    
Entity Well-known Seasoned Issuer No    
Entity Public Float     $ 17,000,000
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Document Fiscal Period Focus Q4