ACQUISITIONS AND DISPOSITIONS OF ASSETS - Narrative (Details) $ in Millions		1 Months Ended			3 Months Ended		12 Months Ended			36 Months Ended
	Aug. 23, 2019 USD ($) national_basketball_association_team major_league_baseball_team national_hockey_league_team professional_team	Feb. 28, 2021 USD ($) television_broadcast_station	May 31, 2019 USD ($) brand	Feb. 28, 2017 USD ($) station	Sep. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($) station	Dec. 31, 2019 USD ($)	Dec. 31, 2021 USD ($)	Sep. 30, 2021 USD ($)	Jun. 30, 2021 USD ($)	Jan. 31, 2020 USD ($)
Acquisitions
Cash paid								$ 9,000	$ 9,000	$ 9,000
Period of increment payments							3 years
Acquisition costs related to legal and other professional services								5	96
Deferred spectrum auction proceeds							$ 71	115	92
Number of television broadcast stations | television_broadcast_station		2
Number of stations assigned new channels | station				100
Total legislation funds to reimburse stations				$ 3,000
Gain (loss) recognized on sale							24	90	62
Total capital expenditure							12	61	$ 66
Repacking process, maximum cost of equipment							15			15
Equipment
Acquisitions
Receipt of equipment with a fair value							58
Radio Station Assets
Acquisitions
Consideration transferred in asset acquisition								7
Television Station Assets
Acquisitions
Consideration transferred in asset acquisition								$ 9
Number of television stations acquired | station								2
ZypMedia
Acquisitions
Cash paid							7
360IA, LLC
Acquisitions
Cash paid							2
Consideration transferred in acquisition							5
Liabilities incurred							1
RSN
Acquisitions
Consideration transferred in acquisition	$ 9,817		$ 9,600
Number of brands acquired | brand			21
Number of professional teams | professional_team	42
Finite-lived intangible assets acquired	$ 6,725
Goodwill, expected tax deductible amount	2,400
KOMO-FM, KOMO-AM, KPLZ-FM and KVI-AM | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Acquisitions
Sales agreement price											$ 13
Deferred spectrum auction proceeds							12
Triangle Sign & Service, LLC | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Acquisitions
Sales agreement price												$ 12
Deferred spectrum auction proceeds							6
Sales agreement price attributable to noncontrolling interests							3			$ 3
WKDA-TV and KBSI TV | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Acquisitions
Sales agreement price		$ 28
Deferred spectrum auction proceeds							12
KGBT Non-License Assets and WDKY License and Non-License Assets | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Acquisitions
Sales agreement price													$ 36
KGBT Non-License Assets | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Acquisitions
Deferred spectrum auction proceeds						$ 8
WDKY License and Non-License Assets | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Acquisitions
Deferred spectrum auction proceeds					$ 21
C-Band Spectrum
Acquisitions
Gain on disposition of assets							$ 43
Customer relationships
Acquisitions
Amortization period, weighted average useful life							13 years
Customer relationships | RSN
Acquisitions
Finite-lived intangible assets acquired	$ 5,439
Amortization period, weighted average useful life	13 years
Favorable sports contracts
Acquisitions
Amortization period, weighted average useful life							12 years
Favorable sports contracts | RSN
Acquisitions
Finite-lived intangible assets acquired	$ 1,271
Amortization period, weighted average useful life	12 years
Trademarks and Trade Names | RSN
Acquisitions
Finite-lived intangible assets acquired	$ 15
Amortization period, weighted average useful life	2 years
Major League Baseball | RSN
Acquisitions
Number of professional teams | major_league_baseball_team	14
National Basketball Association | RSN
Acquisitions
Number of professional teams | national_basketball_association_team	16
National Hockey League | RSN
Acquisitions
Number of professional teams | national_hockey_league_team	12