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Cover Page - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2021
Feb. 17, 2022
Jun. 30, 2021
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2021    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 001-36629    
Entity Registrant Name CAESARS ENTERTAINMENT, INC.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 46-3656781    
Entity Address, Address Line One 100 West Liberty Street    
Entity Address, Address Line Two 12th Floor    
Entity Address, City or Town Reno    
Entity Address, State or Province NV    
Entity Address, Postal Zip Code 89501    
City Area Code 775    
Local Phone Number 328-0100    
Title of 12(b) Security Common Stock, $.00001, par value    
Trading Symbol CZR    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Entity Shell Company false    
Entity Public Float     $ 21.1
Entity Common Stock, Shares Outstanding   214,123,451  
Documents Incorporated by Reference Portions of the Registrant’s definitive proxy statement to be filed with the Commission pursuant to Regulation 14A in connection with the Registrant’s Annual Meeting of Stockholders (the “Proxy Statement”) are incorporated by reference into Part III of this report. Such Proxy Statement will be filed with the Commission not later than 120 days after the conclusion of the Registrant’s fiscal year ended December 31, 2021.    
Entity Central Index Key 0001590895    
Amendment Flag false    
Document Fiscal Year Focus 2021    
Document Fiscal Period Focus FY