COMMITMENTS AND CONTINGENCIES - Other Liabilities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Commitments and Contingencies [Line Items]
Interest expense and amortization of debt discount and deferred financing costs	$ 422	$ 292	$ 212
RSN | Fixed Payment Obligations
Commitments and Contingencies [Line Items]
Other current liabilities	56
Other long-term liabilities	145
Interest expense and amortization of debt discount and deferred financing costs	4
RSN | Variable Payment Obligations
Commitments and Contingencies [Line Items]
Other current liabilities	34
Other long-term liabilities	205
Interest expense and amortization of debt discount and deferred financing costs	$ 8