FAIR VALUE MEASUREMENTS - Schedule of Carrying Value and Fair Value of Notes and Debentures (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023	Feb. 07, 2023
FAIR VALUE MEASUREMENTS:
Investments in equity securities	$ 136,000,000		$ 136,000,000		$ 162,000,000
Debt discount and deferred financing costs	41,000,000		41,000,000		46,000,000
Interest Rate Swap
FAIR VALUE MEASUREMENTS:
Interest rate swap	$ 7,000,000		$ 7,000,000		1,000,000
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%
Senior Notes | 5.125% Senior Notes due 2027
FAIR VALUE MEASUREMENTS:
Interest rate (as a percent)	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%
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	$ (7,000,000)	$ (17,000,000)	$ (8,000,000)	$ (17,000,000)
Level 1 | Fair Value
FAIR VALUE MEASUREMENTS:
Investments in equity securities	0		0		6,000,000
Deferred compensation assets	47,000,000		47,000,000		45,000,000
Deferred compensation liabilities	45,000,000		45,000,000		44,000,000
Level 1 | Fair Value | Money market funds
FAIR VALUE MEASUREMENTS:
Money market funds	256,000,000		256,000,000		588,000,000
Level 2 | Face Value | Debt of variable interest entities
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	7,000,000		7,000,000		7,000,000
Level 2 | Face Value | Debt of non-media subsidiaries
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	15,000,000		15,000,000		15,000,000
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		485,000,000
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		274,000,000
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		737,000,000
Level 2 | Face Value | Term Loan | Term Loan B-2, due September 30, 2026
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	1,181,000,000		1,181,000,000		1,215,000,000
Level 2 | Face Value | Term Loan | Term Loan B-3, due April 1, 2028
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	718,000,000		718,000,000		722,000,000
Level 2 | Face Value | Term Loan | Term Loan B-4, due April 21, 2029
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	735,000,000		735,000,000		739,000,000
Level 2 | Fair Value
FAIR VALUE MEASUREMENTS:
Investments in equity securities	94,000,000		94,000,000		110,000,000
Level 2 | Fair Value | Debt of variable interest entities
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	7,000,000		7,000,000		7,000,000
Level 2 | Fair Value | Debt of non-media subsidiaries
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	15,000,000		15,000,000		15,000,000
Level 2 | Fair Value | Senior Notes | 5.500% Senior Notes due 2030
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	289,000,000		289,000,000		362,000,000
Level 2 | Fair Value | Senior Notes | 5.125% Senior Notes due 2027
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	244,000,000		244,000,000		248,000,000
Level 2 | Fair Value | Senior Notes | 4.125% Senior Secured Notes due 2030
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	491,000,000		491,000,000		521,000,000
Level 2 | Fair Value | Term Loan | Term Loan B-2, due September 30, 2026
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	1,099,000,000		1,099,000,000		1,124,000,000
Level 2 | Fair Value | Term Loan | Term Loan B-3, due April 1, 2028
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	499,000,000		499,000,000		595,000,000
Level 2 | Fair Value | Term Loan | Term Loan B-4, due April 21, 2029
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	489,000,000		489,000,000		602,000,000
Level 2 | Fair Value | Interest Rate Swap
FAIR VALUE MEASUREMENTS:
Interest rate swap	7,000,000		7,000,000		1,000,000
Level 3 | Face Value | Options and Warrants
FAIR VALUE MEASUREMENTS:
Measurement adjustments	(3,000,000)	$ (17,000,000)	(4,000,000)	$ (17,000,000)
Level 3 | Fair Value
FAIR VALUE MEASUREMENTS:
Investments in equity securities	$ 42,000,000		$ 42,000,000		$ 46,000,000