RELATED PERSON TRANSACTIONS - Sports Programming Rights (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($) professional_team	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) professional_team	Sep. 30, 2020 USD ($)
Related Party Transaction [Line Items]
Sports programming rights payments			$ 1,338	$ 1,124
Sports Teams Affiliates
Related Party Transaction [Line Items]
Number of sports rights agreements assumed | professional_team	6		6
Sports programming rights payments	$ 118	$ 15	$ 377	$ 221