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Cover Page - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
Dec. 31, 2022
Feb. 07, 2023
Jun. 30, 2022
Document Annual Report true    
Document Transition Report false    
Document Period End Date Dec. 31, 2022    
Document Fiscal Year Focus 2022    
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 NYSEAMER    
Entity Interactive Data Current Yes    
Entity Filer Category 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 No    
Entity Voluntary Filers No    
Entity Public Float     $ 266.6
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 2023 annual meeting of shareholders to be filed with the Securities and Exchange Commission within 120 days after the end of fiscal year 2022 are incorporated by reference into Part III of this Annual Report on Form 10-K.
    
Common Class A [Member]      
Common Stock, Par or Stated Value Per Share $ 0.10    
Entity Common Stock, Shares Outstanding   13,919,646  
Common Class B [Member]      
Common Stock, Par or Stated Value Per Share $ 0.10    
Entity Common Stock, Shares Outstanding   719,200