Note 13 - Goodwill and Intangible Assets - Changes in Goodwill and Other Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Goodwill	$ 1,460	$ 1,446
Goodwill, Net additions	1,211	14
Goodwill, Dispositions	(22)
Goodwill	2,649	1,460	$ 1,446
Broadcast licenses	3,579
Broadcast licenses	5,303	3,579
Finite-lived intangible assets	395	460
Finite-lived Intangible Assets Acquired	547	40
Amortization of Intangible Assets	(117)	(105)	(115)
Finite-lived intangible assets	825	395	460
Total intangible assets net of accumulated amortization	5,434	5,479
Total intangible assets net of accumulated amortization, Net additions	3,529	60
Total intangible assets net of accumulated amortization, Dispositions	(69)
Total intangible assets net of accumulated amortization	8,777	5,434	5,479
Broadcast Licenses [Member]
Broadcast licenses	3,579	3,573
Indefinite-lived Intangible Assets Acquired	1,771	6
Broadcast licenses, Dispositions	(47)
Broadcast licenses	$ 5,303	$ 3,579	$ 3,573