NOTES PAYABLE AND COMMERCIAL BANK FINANCING - Additional Debt Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Interest expense including amortization of debt discount and deferred financing costs	$ 656	$ 422	$ 292
Amortization of debt issuance costs and discounts	31	17	8
Ticking fees	5	96
Deferred financing costs	19	222
Original issuance premium	$ 25
Bank Credit Agreement
Debt Instrument [Line Items]
Deferred financing costs			1
Tribune Media Company
Debt Instrument [Line Items]
Ticking fees			100
Interest expense | Tribune Media Company
Debt Instrument [Line Items]
Ticking fees		$ 79	$ 79