RELATED PERSON TRANSACTIONS - Sports Programming Rights (Details) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Aug. 23, 2019 professional_team
Related Party Transaction [Line Items]
Sports programming rights payments		$ 1,025	$ 0
Sports Teams Affiliates | RSNs
Related Party Transaction [Line Items]
Sports programming rights payments	$ 136	$ 206
Number of sports rights agreements assumed | professional_team				5