FAIR VALUE MEASUREMENTS - Schedule of Carrying Value and Fair Value of Notes and Debentures (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Feb. 07, 2023
FAIR VALUE MEASUREMENTS:
Investments in equity securities	$ 155,000,000		$ 162,000,000
Debt discount and deferred financing costs	$ 43,000,000		46,000,000
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%
Senior Notes | 5.125% Senior Notes due 2027
FAIR VALUE MEASUREMENTS:
Interest rate (as a percent)	5.125%
Senior Notes | 4.125% Senior Secured Notes due 2030
FAIR VALUE MEASUREMENTS:
Interest rate (as a percent)	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	$ (1,000,000)
Level 1 | Fair Value
FAIR VALUE MEASUREMENTS:
Investments in equity securities	0		6,000,000
Deferred compensation assets	47,000,000		45,000,000
Deferred compensation liabilities	46,000,000		44,000,000
Level 1 | Fair Value | Money market funds
FAIR VALUE MEASUREMENTS:
Money market funds	514,000,000		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
Level 2 | Face Value | Debt of non-media subsidiaries
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	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
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
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
Level 2 | Face Value | Term Loan | Term Loan B-2, due September 30, 2026
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	1,185,000,000		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	720,000,000		722,000,000
Level 2 | Face Value | Term Loan | Term Loan B-4, due April 21, 2029
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	737,000,000		739,000,000
Level 2 | Fair Value
FAIR VALUE MEASUREMENTS:
Investments in equity securities	110,000,000		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
Level 2 | Fair Value | Debt of non-media subsidiaries
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	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	349,000,000		362,000,000
Level 2 | Fair Value | Senior Notes | 5.125% Senior Notes due 2027
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	252,000,000		248,000,000
Level 2 | Fair Value | Senior Notes | 4.125% Senior Secured Notes due 2030
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	536,000,000		521,000,000
Level 2 | Fair Value | Term Loan | Term Loan B-2, due September 30, 2026
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	1,125,000,000		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	569,000,000		595,000,000
Level 2 | Fair Value | Term Loan | Term Loan B-4, due April 21, 2029
FAIR VALUE MEASUREMENTS:
Debt fair value disclosure	575,000,000		602,000,000
Level 2 | Fair Value | Interest Rate Swap
FAIR VALUE MEASUREMENTS:
Interest rate swap	7,000,000		1,000,000
Level 3 | Face Value | Options and Warrants
FAIR VALUE MEASUREMENTS:
Measurement adjustments	(1,000,000)	$ 0
Level 3 | Fair Value
FAIR VALUE MEASUREMENTS:
Investments in equity securities	$ 45,000,000		$ 46,000,000