GOODWILL, INDEFINITE-LIVED INTANGIBLE ASSETS, AND OTHER INTANGIBLE ASSETS - Change in Carrying Amount of Goodwill (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($)
Change in the carrying amount of goodwill related to continuing operations
Goodwill at beginning of period	$ 2,092
Disposition	(4)
Goodwill at end of period	2,088
Broadcast
Change in the carrying amount of goodwill related to continuing operations
Goodwill at beginning of period	2,017
Disposition	(1)
Goodwill at end of period	2,016
Other
Change in the carrying amount of goodwill related to continuing operations
Goodwill at beginning of period	75
Disposition	(3)
Goodwill at end of period	$ 72