FAIR VALUE MEASUREMENTS - Schedule of Carrying Value and Fair Value of Notes and Debentures (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Jun. 30, 2023	Feb. 07, 2023	Dec. 31, 2022
FAIR VALUE MEASUREMENTS:
Investments in equity securities	$ 156,000,000		$ 156,000,000				$ 234,000,000
Debt discount and deferred financing costs	$ 48,000,000		$ 48,000,000				56,000,000
Interest Rate Swap
FAIR VALUE MEASUREMENTS:
Notional amount						$ 600,000,000
Fixed interest rate						3.90%
Senior Notes | 5.500% Senior Notes due 2030
FAIR VALUE MEASUREMENTS:
Interest rate (as a percent)	5.50%		5.50%		5.50%
Senior Notes | 5.125% Senior Notes due 2027
FAIR VALUE MEASUREMENTS:
Interest rate (as a percent)	5.125%		5.125%		5.125%
Senior Notes | 4.125% Senior Secured Notes due 2030
FAIR VALUE MEASUREMENTS:
Interest rate (as a percent)	4.125%		4.125%		4.125%
Bally's
FAIR VALUE MEASUREMENTS:
Option purchase price, minimum (in dollars per share)			$ 30
Option purchase price, maximum (in dollars per share)			$ 45
Bally's | Options and Warrants
FAIR VALUE MEASUREMENTS:
Measurement adjustments	$ (10,000,000)	$ (200,000)		$ (130,000,000)
Level 1 | Fair Value
FAIR VALUE MEASUREMENTS:
Investments in equity securities	5,000,000		$ 5,000,000				6,000,000
Deferred compensation assets	42,000,000		42,000,000				41,000,000
Deferred compensation liabilities	39,000,000		39,000,000				35,000,000
Level 1 | Fair Value | Money market funds
FAIR VALUE MEASUREMENTS:
Money market funds	571,000,000		571,000,000				741,000,000
Level 2 | Face Value | Debt of variable interest entities
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	7,000,000		7,000,000				8,000,000
Level 2 | Face Value | Debt of non-media subsidiaries
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	16,000,000		16,000,000				16,000,000
Level 2 | Face Value | Senior Notes | 5.500% Senior Notes due 2030
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	485,000,000		485,000,000				500,000,000
Level 2 | Face Value | Senior Notes | 5.125% Senior Notes due 2027
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	274,000,000		274,000,000				282,000,000
Level 2 | Face Value | Senior Notes | 4.125% Senior Secured Notes due 2030
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	737,000,000		737,000,000				750,000,000
Level 2 | Face Value | Term Loan | Term Loan B-2, due September 30, 2026
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	1,218,000,000		1,218,000,000				1,258,000,000
Level 2 | Face Value | Term Loan | Term Loan B-3, due April 1, 2028
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	723,000,000		723,000,000				729,000,000
Level 2 | Face Value | Term Loan | Term Loan B-4, due April 21, 2029
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	741,000,000		741,000,000				746,000,000
Level 2 | Fair Value
FAIR VALUE MEASUREMENTS:
Investments in equity securities	103,000,000		103,000,000				153,000,000
Level 2 | Fair Value | Debt of variable interest entities
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	7,000,000		7,000,000				8,000,000
Level 2 | Fair Value | Debt of non-media subsidiaries
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	16,000,000		16,000,000				16,000,000
Level 2 | Fair Value | Senior Notes | 5.500% Senior Notes due 2030
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	260,000,000		260,000,000				347,000,000
Level 2 | Fair Value | Senior Notes | 5.125% Senior Notes due 2027
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	224,000,000		224,000,000				230,000,000
Level 2 | Fair Value | Senior Notes | 4.125% Senior Secured Notes due 2030
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	454,000,000		454,000,000				560,000,000
Level 2 | Fair Value | Term Loan | Term Loan B-2, due September 30, 2026
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	1,051,000,000		1,051,000,000				1,198,000,000
Level 2 | Fair Value | Term Loan | Term Loan B-3, due April 1, 2028
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	506,000,000		506,000,000				692,000,000
Level 2 | Fair Value | Term Loan | Term Loan B-4, due April 21, 2029
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	511,000,000		511,000,000				709,000,000
Level 2 | Fair Value | Interest Rate Swap
FAIR VALUE MEASUREMENTS:
Interest rate swap	11,000,000		11,000,000				0
Level 3 | Face Value | Options and Warrants
FAIR VALUE MEASUREMENTS:
Measurement adjustments	(10,000,000)	$ 0	(27,000,000)	$ (130,000,000)
Level 3 | Fair Value
FAIR VALUE MEASUREMENTS:
Investments in equity securities	$ 48,000,000		$ 48,000,000				$ 75,000,000