FAIR VALUE MEASUREMENTS - Schedule of Carrying Value and Fair Value of Notes and Debentures (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023	Feb. 07, 2023
FAIR VALUE MEASUREMENTS:
Investments in equity securities	$ 214,000,000		$ 214,000,000		$ 162,000,000
Debt discount and deferred financing costs	38,000,000		38,000,000		46,000,000
Interest Rate Swap
FAIR VALUE MEASUREMENTS:
Interest rate swap	$ 3,000,000		$ 3,000,000
Interest rate swap					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	$ 18,000,000	$ (10,000,000)	$ 10,000,000	$ (27,000,000)
Level 1 | Fair Value
FAIR VALUE MEASUREMENTS:
Investments in equity securities	20,000,000		20,000,000		6,000,000
Deferred compensation assets	47,000,000		47,000,000		45,000,000
Deferred compensation liabilities	46,000,000		46,000,000		44,000,000
Level 1 | Fair Value | Money market funds
FAIR VALUE MEASUREMENTS:
Money market funds	381,000,000		381,000,000		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	0		0		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	1,178,000,000		1,178,000,000		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	716,000,000		716,000,000		722,000,000
Level 2 | Face Value | Term Loan | Term Loan B-4, due April 21, 2029
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	733,000,000		733,000,000		739,000,000
Level 2 | Fair Value
FAIR VALUE MEASUREMENTS:
Investments in equity securities	136,000,000		136,000,000		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	0		0		15,000,000
Level 2 | Fair Value | Senior Notes | 5.500% Senior Notes due 2030
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	350,000,000		350,000,000		362,000,000
Level 2 | Fair Value | Senior Notes | 5.125% Senior Notes due 2027
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	238,000,000		238,000,000		248,000,000
Level 2 | Fair Value | Senior Notes | 4.125% Senior Secured Notes due 2030
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	574,000,000		574,000,000		521,000,000
Level 2 | Fair Value | Term Loan | Term Loan B-2, due September 30, 2026
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	1,116,000,000		1,116,000,000		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	530,000,000		530,000,000		595,000,000
Level 2 | Fair Value | Term Loan | Term Loan B-4, due April 21, 2029
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	543,000,000		543,000,000		602,000,000
Level 2 | Fair Value | Interest Rate Swap
FAIR VALUE MEASUREMENTS:
Interest rate swap	3,000,000		3,000,000
Interest rate swap					1,000,000
Level 3 | Face Value | Options and Warrants
FAIR VALUE MEASUREMENTS:
Measurement adjustments	16,000,000	$ (10,000,000)	12,000,000	$ (27,000,000)
Level 3 | Fair Value
FAIR VALUE MEASUREMENTS:
Investments in equity securities	$ 58,000,000		$ 58,000,000		$ 46,000,000