SEGMENT DATA - Segment Financial Information (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Segment data
Assets	[1]	$ 12,483		$ 12,483		$ 17,370
Total revenues		1,539	$ 1,125	4,431	$ 2,618
Depreciation of property and equipment and amortization of definite-lived intangibles and other assets		174	120	524	252
Amortization of sports programming rights		632	193	1,028	193
Amortization of program contract costs		19	22	63	68
Corporate general and administrative overhead expenses		30	237	111	317
(Gain) loss on asset dispositions and other, net of impairment		(39)	(35)	(99)	(57)
Impairment of goodwill and definite-lived intangible assets		4,264	0	4,264	0
Operating (loss) income		(4,216)	(6)	(3,397)	193
Interest expense and amortization of debt discount and deferred financing costs		157	129	502	237
Loss from equity method investments		(10)	(12)	(23)	(38)
Intersegment revenues		26	9	75	9
Operating segments | Broadcast
Segment data
Assets		4,673		4,673
Total revenues		734	661	2,026	1,939
Depreciation of property and equipment and amortization of definite-lived intangibles and other assets		60	61	178	183
Amortization of sports programming rights		0	0	0	0
Amortization of program contract costs		19	22	63	68
Corporate general and administrative overhead expenses		25	23	95	82
(Gain) loss on asset dispositions and other, net of impairment		(41)	(29)	(101)	(51)
Impairment of goodwill and definite-lived intangible assets		0		0
Operating (loss) income		221	154	455	384
Interest expense and amortization of debt discount and deferred financing costs		2	1	4	4
Loss from equity method investments		0	0	0	0
Operating segments | Local sports
Segment data
Assets		6,211		6,211
Total revenues		727	352	2,155	352
Depreciation of property and equipment and amortization of definite-lived intangibles and other assets		109	54	328	54
Amortization of sports programming rights		632	193	1,028	193
Amortization of program contract costs		0	0	0	0
Corporate general and administrative overhead expenses		3	92	7	92
(Gain) loss on asset dispositions and other, net of impairment		0	0	0	0
Impairment of goodwill and definite-lived intangible assets		4,264		4,264
Operating (loss) income		(4,450)	(56)	(3,885)	(56)
Interest expense and amortization of debt discount and deferred financing costs		111	73	351	73
Loss from equity method investments		(2)	1	6	1
Operating segments | Other & Corporate
Segment data
Assets		1,641		1,641
Total revenues		105	129	338	354
Depreciation of property and equipment and amortization of definite-lived intangibles and other assets		6	6	19	16
Amortization of sports programming rights		0	0	0	0
Amortization of program contract costs		0	0	0	0
Corporate general and administrative overhead expenses		2	123	9	144
(Gain) loss on asset dispositions and other, net of impairment		2	(6)	2	(6)
Impairment of goodwill and definite-lived intangible assets		0		0
Operating (loss) income		10	(102)	38	(128)
Interest expense and amortization of debt discount and deferred financing costs		48	58	156	170
Loss from equity method investments		(8)	(13)	(29)	(39)
Eliminations
Segment data
Assets		(42)		(42)
Total revenues		(27)	(17)	(88)	(27)
Depreciation of property and equipment and amortization of definite-lived intangibles and other assets		(1)	(1)	(1)	(1)
Amortization of sports programming rights		0	0	0	0
Amortization of program contract costs		0	0	0	0
Corporate general and administrative overhead expenses		0	(1)	0	(1)
(Gain) loss on asset dispositions and other, net of impairment		0	0	0	0
Impairment of goodwill and definite-lived intangible assets		0		0
Operating (loss) income		3	(2)	(5)	(7)
Interest expense and amortization of debt discount and deferred financing costs		(4)	(3)	(9)	(10)
Loss from equity method investments		$ 0	$ 0	$ 0	$ 0

[1] Our consolidated total assets as of September 30, 2020 and December 31, 2019 include total assets of variable interest entities (VIEs) of $237 million and $228 million, respectively, which can only be used to settle the obligations of the VIEs. Our consolidated total liabilities as of September 30, 2020 and December 31, 2019 include total liabilities of VIEs of $53 million and $27 million, respectively, for which the creditors of the VIEs have no recourse to us. See Note 8. Variable Interest Entities.