NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Revenue Recognition, Disaggregation of Revenue (Details) - USD ($) $ in Millions	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
Disaggregation of Revenue [Line Items]
Revenue	$ 1,476	$ 1,535	$ 1,612	$ 1,511	$ 1,512	$ 1,539	$ 1,283	$ 1,609	$ 6,134	$ 5,943	$ 4,240
Eliminations
Disaggregation of Revenue [Line Items]
Revenue									(160)	(116)	(59)
Broadcast | Operating segments
Disaggregation of Revenue [Line Items]
Revenue									2,757	2,922	2,690
Local sports | Operating segments
Disaggregation of Revenue [Line Items]
Revenue									3,056	2,686	1,139
Other | Operating segments
Disaggregation of Revenue [Line Items]
Revenue									481	451	470
Distribution revenue
Disaggregation of Revenue [Line Items]
Revenue									4,288	4,085	2,500
Distribution revenue | Eliminations
Disaggregation of Revenue [Line Items]
Revenue									0	0	0
Distribution revenue | Broadcast | Operating segments
Disaggregation of Revenue [Line Items]
Revenue									1,475	1,414	1,341
Distribution revenue | Local sports | Operating segments
Disaggregation of Revenue [Line Items]
Revenue									2,620	2,472	1,029
Distribution revenue | Other | Operating segments
Disaggregation of Revenue [Line Items]
Revenue									193	199	130
Advertising revenue
Disaggregation of Revenue [Line Items]
Revenue									1,691	1,689	1,480
Advertising revenue | Eliminations
Disaggregation of Revenue [Line Items]
Revenue									(41)	(2)	(1)
Advertising revenue | Broadcast | Operating segments
Disaggregation of Revenue [Line Items]
Revenue									1,106	1,364	1,268
Advertising revenue | Local sports | Operating segments
Disaggregation of Revenue [Line Items]
Revenue									409	196	103
Advertising revenue | Other | Operating segments
Disaggregation of Revenue [Line Items]
Revenue									217	131	110
Other media, non-media, and intercompany revenue
Disaggregation of Revenue [Line Items]
Revenue									155	169	260
Other media, non-media, and intercompany revenue | Eliminations
Disaggregation of Revenue [Line Items]
Revenue									(119)	(114)	(58)
Other media, non-media, and intercompany revenue | Broadcast | Operating segments
Disaggregation of Revenue [Line Items]
Revenue									176	144	81
Other media, non-media, and intercompany revenue | Local sports | Operating segments
Disaggregation of Revenue [Line Items]
Revenue									27	18	7
Other media, non-media, and intercompany revenue | Other | Operating segments
Disaggregation of Revenue [Line Items]
Revenue									$ 71	$ 121	$ 230