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Organization and Basis of Presentation - Additional information (Details) £ in Millions						12 Months Ended
	Aug. 26, 2021 USD ($)	May 12, 2021 GBP (£)	Apr. 22, 2021 USD ($)	Apr. 22, 2021 GBP (£)	Oct. 06, 2020 GBP (£)	Dec. 31, 2021 USD ($) state hotel u_eriEmployee machine game property	Sep. 08, 2021 USD ($)	Sep. 08, 2021 GBP (£)	Jun. 14, 2021 GBP (£)	Dec. 31, 2020 USD ($)
Organization and Basis of Presentation
Total number of properties \| property						52
Number of states gaming facilities are located \| state						16
Number of slot machines and video lottery terminals \| machine						55,700
Number of table games \| game						2,900
Number of room in hotel \| hotel						47,700
Total liabilities \| $						$ 33,490,000,000				$ 31,351,000,000
Sports Wagering
Organization and Basis of Presentation
Number of states gaming facilities are located \| state						21
Mobile Sports Betting
Organization and Basis of Presentation
Number of states gaming facilities are located \| u_eriEmployee						14
Online Real Money Gaming Businesses
Organization and Basis of Presentation
Number of states gaming facilities are located \| state						5
VIEs
Organization and Basis of Presentation
Property and equipment, net \| $										130,000,000
Total liabilities \| $										$ 130,000,000
Gain on sale of joint venture \| $						$ 0
Senior Secured 540-day Bridge Loan Facility \| Line of Credit
Organization and Basis of Presentation
Credit facility \| £				£ 1,000
Senior Secured 60-day Bridge Loan Facility \| Line of Credit
Organization and Basis of Presentation
Credit facility \| £				503
Senior Secured 540-Day Revolving Credit Facility \| Line of Credit
Organization and Basis of Presentation
Credit facility \| £				116
William Hill International
Organization and Basis of Presentation
Disposal group, consideration \| £								£ 2,200
Working capital adjustments							$ 1,200,000,000	£ 835
William Hill
Organization and Basis of Presentation
Cash consideration paid			$ 3,900,000,000	£ 2,900
William Hill Acquisition \| $			$ 3,912,000,000
William Hill \| Sports Wagering
Organization and Basis of Presentation
Number of states gaming facilities are located \| state						8
William Hill \| Senior Secured 60-day Bridge Loan Facility \| Line of Credit
Organization and Basis of Presentation
Repayments of debt \| £		£ 503
William Hill \| Senior Secured Revolving Credit Facility \| Line of Credit
Organization and Basis of Presentation
Credit facility \| £									£ 116
William Hill \| Deutsche Bank AG, London Branch and JP Morgan Chase Bank, N.A
Organization and Basis of Presentation
William Hill Acquisition \| £					£ 1,500
Asset Sale Bridge Facility \| William Hill \| Line of Credit
Organization and Basis of Presentation
Credit facility \| £									£ 700
Horseshoe Baltimore
Organization and Basis of Presentation
Cash consideration paid \| $	$ 55,000,000
William Hill Acquisition \| $	$ 154,000,000
Percentage of outstanding shares owned	75.80%
Gain recognized on acquisition \| $	$ 40,000,000