SEGMENT DATA - Segment Financial Information (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Segment data
Assets	[1]	$ 13,132		$ 13,382
Revenues		1,511	$ 1,609
Depreciation of property and equipment and amortization of definite-lived intangibles and other assets		153	174
Amortization of sports programming rights		552	391
Amortization of program contract costs		23	23
Corporate general and administrative expenses		61	49
(Gain) loss on asset dispositions and other, net of impairment		(14)	(32)
Operating income (loss)		35	327
Interest expense including amortization of debt discount and deferred financing costs		151	180
Income (loss) from equity method investments		9	(6)
Intersegment revenues		27	24
Intersegment selling, general, and administrative expenses		27	24
Operating segments | Broadcast
Segment data
Assets		4,800
Revenues		665	701
Depreciation of property and equipment and amortization of definite-lived intangibles and other assets		62	58
Amortization of sports programming rights		0	0
Amortization of program contract costs		21	23
Corporate general and administrative expenses		55	44
(Gain) loss on asset dispositions and other, net of impairment		(14)	(32)
Operating income (loss)		63	152
Interest expense including amortization of debt discount and deferred financing costs		1	1
Income (loss) from equity method investments		0	0
Operating segments | Local sports
Segment data
Assets		6,222
Revenues		768	812
Depreciation of property and equipment and amortization of definite-lived intangibles and other assets		84	110
Amortization of sports programming rights		552	391
Amortization of program contract costs		0	0
Corporate general and administrative expenses		3	2
(Gain) loss on asset dispositions and other, net of impairment		0	0
Operating income (loss)		(41)	165
Interest expense including amortization of debt discount and deferred financing costs		108	123
Income (loss) from equity method investments		13	6
Other & Corporate
Segment data
Assets		2,121
Revenues		108	128
Depreciation of property and equipment and amortization of definite-lived intangibles and other assets		8	6
Amortization of sports programming rights		0	0
Amortization of program contract costs		2	0
Corporate general and administrative expenses		3	3
(Gain) loss on asset dispositions and other, net of impairment		0	0
Operating income (loss)		13	19
Interest expense including amortization of debt discount and deferred financing costs		45	59
Income (loss) from equity method investments		(4)	(12)
Eliminations
Segment data
Assets		(11)
Revenues		(30)	(32)
Depreciation of property and equipment and amortization of definite-lived intangibles and other assets		(1)	0
Amortization of sports programming rights		0	0
Amortization of program contract costs		0	0
Corporate general and administrative expenses		0	0
(Gain) loss on asset dispositions and other, net of impairment		0	0
Operating income (loss)		0	(9)
Interest expense including amortization of debt discount and deferred financing costs		(3)	(3)
Income (loss) from equity method investments		$ 0	$ 0

[1] Our consolidated total assets as of March 31, 2021 and December 31, 2020 include total assets of variable interest entities (VIEs) of $241 million and $233 million, respectively, which can only be used to settle the obligations of the VIEs. Our consolidated total liabilities as of March 31, 2021 and December 31, 2020 include total liabilities of VIEs of $57 million and $60 million, respectively, for which the creditors of the VIEs have no recourse to us. See Note 9. Variable Interest Entities.