RELATED PERSON TRANSACTIONS - Sports Programming Rights (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021 USD ($) professional_team	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) professional_team	Jun. 30, 2020 USD ($)
Related Party Transaction [Line Items]
Sports programming rights payments			$ 1,010	$ 1,025
Sports Teams Affiliates
Related Party Transaction [Line Items]
Number of sports rights agreements assumed | professional_team	6		6
Sports programming rights payments	$ 138	$ 136	$ 258	$ 206