GOODWILL, INDEFINITE-LIVED INTANGIBLE ASSETS, AND OTHER INTANGIBLE ASSETS - Narrative (Details)	3 Months Ended	12 Months Ended
	Sep. 30, 2020 network	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Amortized intangible assets:
Goodwill impairment		$ 0	$ 2,615,000,000	$ 0
Accumulated goodwill impairment		3,029,000,000	3,029,000,000
Impairment of indefinite-lived intangible assets (excluding goodwill)		0	0
Amortization of definite-lived intangible and other assets		554,000,000	703,000,000	370,000,000
Impairment charge		0		0
Number of RSNs with carrying values in excess of future undiscounted cash flows | network	10
Goodwill		2,088,000,000	2,092,000,000	4,716,000,000
Definite-lived intangible assets, net		5,088,000,000	5,624,000,000
Local sports
Amortized intangible assets:
Goodwill impairment			2,615,000,000
Goodwill		$ 0	0	2,615,000,000
Customer relationships
Amortized intangible assets:
Amortization period, weighted average useful life		13 years
Impairment charge			1,218,000,000
Definite-lived intangible assets, net		$ 3,904,000,000	4,286,000,000
Customer relationships | Local sports
Amortized intangible assets:
Definite-lived intangible assets, net		$ 3,380,000,000
Network affiliation
Amortized intangible assets:
Amortization period, weighted average useful life		15 years
Definite-lived intangible assets, net		$ 575,000,000	663,000,000
Favorable sports contracts
Amortized intangible assets:
Amortization period, weighted average useful life		12 years
Amortization of definite-lived intangible and other assets		$ 77,000,000	131,000,000	$ 43,000,000
Impairment charge			431,000,000
Definite-lived intangible assets, net		589,000,000	666,000,000
Other
Amortized intangible assets:
Definite-lived intangible assets, net		20,000,000	$ 9,000,000
Other | Local sports
Amortized intangible assets:
Definite-lived intangible assets, net		$ 589,000,000