Note 10 - Goodwill and Intangible Assets - Intangible Assets and Related Accumulated Amortization (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
Goodwill	$ 2,642	$ 2,642
Finite-Lived Intangible Assets, Net	261	290
Total intangible assets, gross	9,215	9,215
Total intangible assets, accumulated amortization	(1,000)	(972)
Total intangible assets, net	8,215	8,243
Network Affiliate [Member]
Finite-Lived Intangible Assets, Gross	216	216
Finite-Lived Intangible Assets, Accumulated Amortization	(167)	(160)
Finite-Lived Intangible Assets, Net	49	56
Other Intangible Assets [Member]
Finite-Lived Intangible Assets, Gross	991	992
Finite-Lived Intangible Assets, Accumulated Amortization	(779)	(758)
Finite-Lived Intangible Assets, Net	212	234
Intangible Assets Subject to Amortization [Member]
Finite-Lived Intangible Assets, Gross	1,207	1,208
Finite-Lived Intangible Assets, Accumulated Amortization	(946)	(918)
Finite-Lived Intangible Assets, Net	261	290
Broadcast Licenses [Member]
Indefinite-lived Intangible Assets (Excluding Goodwill), Gross	5,366	5,365
Indefinite-Lived Intangible Assets (Excluding Goodwill), Accumulated Amortization	(54)	(54)
Indefinite-Lived Intangible Assets (Excluding Goodwill)	5,312	5,311
Goodwill Not Amortizable [Member]
Goodwill, Gross	2,642	2,642
Goodwill, Accumulated Amortization	0	0
Goodwill	2,642	2,642
Intangible Assets Not Subject to Amortization [Member]
Goodwill and Indefinite-Lived Intangible Assets, Gross	8,008	8,007
Goodwill and Indefinite-lived Intangible Assets, Accumulated Amortization	(54)	(54)
Goodwill and Indefinite-Lived Assets, Net	$ 7,954	$ 7,953