SEGMENT DATA - Segment Financial Information (Details) - USD ($)		3 Months Ended								12 Months Ended
		Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment data
Goodwill		$ 2,088,000,000				$ 2,092,000,000				$ 2,088,000,000	$ 2,092,000,000	$ 4,716,000,000
Assets	[1]	12,541,000,000				13,382,000,000				12,541,000,000	13,382,000,000
Capital expenditures										80,000,000	157,000,000	156,000,000
Revenue		1,476,000,000	$ 1,535,000,000	$ 1,612,000,000	$ 1,511,000,000	1,512,000,000	$ 1,539,000,000	$ 1,283,000,000	$ 1,609,000,000	6,134,000,000	5,943,000,000	4,240,000,000
Depreciation of property and equipment and amortization of definite-lived intangible assets and other assets										591,000,000	674,000,000	424,000,000
Amortization of sports programming rights										2,350,000,000	1,078,000,000	637,000,000
Amortization of program contract costs										93,000,000	86,000,000	90,000,000
Corporate general and administrative expenses										170,000,000	148,000,000	387,000,000
Gain on asset dispositions and other, net of impairment										(71,000,000)	(115,000,000)	(92,000,000)
Impairment of goodwill and definite-lived intangible assets										0	4,264,000,000	0
Operating income		165,000,000	$ 73,000,000	$ (178,000,000)	$ 35,000,000	625,000,000	$ (4,216,000,000)	$ 492,000,000	$ 327,000,000	95,000,000	(2,772,000,000)	470,000,000
Interest expense including amortization of debt discount and deferred financing costs										618,000,000	656,000,000	422,000,000
Income (loss) from equity method investments										45,000,000	(36,000,000)	(35,000,000)
Spectrum repack reimbursements										24,000,000	90,000,000	62,000,000
Gain (loss) recognized on sale										24,000,000	90,000,000	62,000,000
Intersegment revenues										111,000,000	100,000,000	35,000,000
Broadcast
Segment data
Goodwill		2,016,000,000				2,017,000,000				2,016,000,000	2,017,000,000	2,026,000,000
Local sports
Segment data
Goodwill		0				0				0	0	2,615,000,000
Operating segments | Broadcast
Segment data
Goodwill		2,016,000,000				2,017,000,000				2,016,000,000	2,017,000,000
Assets		4,793,000,000				4,908,000,000				4,793,000,000	4,908,000,000
Capital expenditures										52,000,000	101,000,000
Revenue										2,757,000,000	2,922,000,000	2,690,000,000
Depreciation of property and equipment and amortization of definite-lived intangible assets and other assets										247,000,000	239,000,000	246,000,000
Amortization of sports programming rights										0	0	0
Amortization of program contract costs										76,000,000	83,000,000	90,000,000
Corporate general and administrative expenses										147,000,000	119,000,000	144,000,000
Gain on asset dispositions and other, net of impairment										(24,000,000)	(118,000,000)	(62,000,000)
Impairment of goodwill and definite-lived intangible assets											0
Operating income										374,000,000	789,000,000	546,000,000
Interest expense including amortization of debt discount and deferred financing costs										4,000,000	5,000,000	5,000,000
Income (loss) from equity method investments										0	0	0
Operating segments | Local sports
Segment data
Goodwill		0				0				0	0
Assets		5,769,000,000				6,620,000,000				5,769,000,000	6,620,000,000
Capital expenditures										16,000,000	24,000,000
Revenue										3,056,000,000	2,686,000,000	1,139,000,000
Depreciation of property and equipment and amortization of definite-lived intangible assets and other assets										316,000,000	410,000,000	157,000,000
Amortization of sports programming rights										2,350,000,000	1,078,000,000	637,000,000
Amortization of program contract costs										0	0	0
Corporate general and administrative expenses										10,000,000	10,000,000	93,000,000
Gain on asset dispositions and other, net of impairment										(43,000,000)	0	0
Impairment of goodwill and definite-lived intangible assets											4,264,000,000
Operating income										(317,000,000)	(3,602,000,000)	30,000,000
Interest expense including amortization of debt discount and deferred financing costs										436,000,000	460,000,000	200,000,000
Income (loss) from equity method investments										49,000,000	6,000,000	18,000,000
Operating segments | Other & Corporate
Segment data
Goodwill		72,000,000				75,000,000				72,000,000	75,000,000
Assets		2,009,000,000				1,867,000,000				2,009,000,000	1,867,000,000
Capital expenditures										12,000,000	32,000,000
Revenue										481,000,000	451,000,000	470,000,000
Depreciation of property and equipment and amortization of definite-lived intangible assets and other assets										31,000,000	27,000,000	22,000,000
Amortization of sports programming rights										0	0	0
Amortization of program contract costs										17,000,000	3,000,000	0
Corporate general and administrative expenses										13,000,000	19,000,000	151,000,000
Gain on asset dispositions and other, net of impairment										(4,000,000)	3,000,000	(30,000,000)
Impairment of goodwill and definite-lived intangible assets											0
Operating income										39,000,000	47,000,000	(98,000,000)
Interest expense including amortization of debt discount and deferred financing costs										192,000,000	203,000,000	230,000,000
Income (loss) from equity method investments										(4,000,000)	(42,000,000)	(53,000,000)
Eliminations
Segment data
Goodwill		0				0				0	0
Assets		$ (30,000,000)				$ (13,000,000)				(30,000,000)	(13,000,000)
Capital expenditures										0	0
Revenue										(160,000,000)	(116,000,000)	(59,000,000)
Depreciation of property and equipment and amortization of definite-lived intangible assets and other assets										(3,000,000)	(2,000,000)	(1,000,000)
Amortization of sports programming rights										0	0	0
Amortization of program contract costs										0	0	0
Corporate general and administrative expenses										0	0	(1,000,000)
Gain on asset dispositions and other, net of impairment										0	0	0
Impairment of goodwill and definite-lived intangible assets											0
Operating income										(1,000,000)	(6,000,000)	(8,000,000)
Interest expense including amortization of debt discount and deferred financing costs										(14,000,000)	(12,000,000)	(13,000,000)
Income (loss) from equity method investments										0	$ 0	0
Broadcast Incentive Auction and C-Band Spectrum
Segment data
Gain (loss) recognized on sale										$ 67,000,000
Spectrum Auction
Segment data
Spectrum repack reimbursements												$ 62,000,000

[1] Our consolidated total assets as of December 31, 2021 and 2020 include total assets of variable interest entities (VIEs) of $217 million and $233 million, respectively, which can only be used to settle the obligations of the VIEs. Our consolidated total liabilities as of December 31, 2021 and 2020 include total liabilities of the VIEs of $62 million and $60 million, respectively, for which the creditors of the VIEs have no recourse to us. See Note 14. Variable Interest Entities.