Note 13 - Goodwill and Intangible Assets - Changes in Goodwill and Other Intangible Assets, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Goodwill	$ 2,643	$ 2,663	$ 2,649
Goodwill, acquisitions and adjustments	4	14
Broadcast licenses	5,320	5,331
Finite-lived intangible assets	415	636	825
Amortization	(194)	(207)	(117)
Total intangible assets net of accumulated amortization	8,378	8,630	8,777
Total intangible assets net of accumulated amortization	(15)	(60)
Total intangible assets net of accumulated amortization	43	0	0
Finite-Lived Intangible Assets [Member]
Acquisition and adjustments	0	(18)
Acquisition and adjustments	0	18
Amortization	(194)	(207)
Finite-lived Intangible Assets [Member]
Finite-lived intangible assets	27
Broadcast Licenses [Member]
Goodwill	16
Broadcast licenses	5,320	5,331	$ 5,303
Acquisition and adjustments	(11)	(28)
Acquisition and adjustments	$ 11	$ 28