Note 3 - Acquisitions and Divestitures - Consideration (Details) - USD ($) $ in Millions			12 Months Ended
	Aug. 02, 2021	Jan. 02, 2019	Dec. 31, 2021	Dec. 31, 2019
Quincy Acquisition [Member]
Adjusted purchase price	$ 936		$ 936
Less - consideration allocated to assets acquired and liabilities assumed for the Quincy overlap markets that were divested on August 2, 2021			383
Purchase consideration for assets acquired and liabilities assumed, net of divestitures			553
Less - consideration allocated to all assets acquired and net of liabilities assumed for the Raycom overlap market stations which were also divested on January 2, 2019			(383)
Raycom, Excluding KYOU and WUPV [Member]
Adjusted purchase price			3,660
Less - consideration allocated to assets acquired and liabilities assumed for the Quincy overlap markets that were divested on August 2, 2021			234
Purchase consideration for assets acquired and liabilities assumed, net of divestitures			3,426
Less - consideration allocated to all assets acquired and net of liabilities assumed for the Raycom overlap market stations which were also divested on January 2, 2019			(234)
KYOU-TV and WUPV-TV [Member]
Adjusted purchase price			17
Less - consideration allocated to assets acquired and liabilities assumed for the Quincy overlap markets that were divested on August 2, 2021			(0)
Purchase consideration for assets acquired and liabilities assumed, net of divestitures			17
Less - consideration allocated to all assets acquired and net of liabilities assumed for the Raycom overlap market stations which were also divested on January 2, 2019			0
Raycom [Member]
Adjusted purchase price		$ 3,660	3,677
Less - consideration allocated to assets acquired and liabilities assumed for the Quincy overlap markets that were divested on August 2, 2021			234
Purchase consideration for assets acquired and liabilities assumed, net of divestitures			3,443	$ 3,443
Less - consideration allocated to all assets acquired and net of liabilities assumed for the Raycom overlap market stations which were also divested on January 2, 2019			$ (234)