Note 10 - Goodwill and Intangible Assets - Intangible Assets and Related Accumulated Amortization (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Goodwill	$ 2,643	$ 2,643
Other intangible assets, net	384	415
Total intangible assets, gross	9,225	9,225
Total intangible assets, accumulated amortization	(878)	(847)
Total intangible assets, net	8,347	8,378
Network Affiliate [Member]
Finite-Lived Intangible Assets, Gross	216	216
Finite-Lived Intangible Assets, Accumulated Amortization	(134)	(126)
Other intangible assets, net	82	90
Other Intangible Assets [Member]
Finite-Lived Intangible Assets, Gross	992	992
Finite-Lived Intangible Assets, Accumulated Amortization	(690)	(667)
Other intangible assets, net	302	325
Intangible Assets Subject to Amortization [Member]
Finite-Lived Intangible Assets, Gross	1,208	1,208
Finite-Lived Intangible Assets, Accumulated Amortization	(824)	(793)
Other intangible assets, net	384	415
Broadcast Licenses [Member]
Indefinite-lived Intangible Assets (Excluding Goodwill), Gross	5,374	5,374
Indefinite-Lived Intangible Assets (Excluding Goodwill), Accumulated Amortization	(54)	(54)
Indefinite-Lived Intangible Assets (Excluding Goodwill)	5,320	5,320
Goodwill Not Amortizable [Member]
Goodwill, Gross	2,643	2,643
Goodwill, Accumulated Amortization	0	0
Goodwill	2,643	2,643
Intangible Assets Not Subject to Amortization [Member]
Goodwill and Indefinite-Lived Intangible Assets, Gross	8,017	8,017
Goodwill and Indefinite-lived Intangible Assets, Accumulated Amortization	(54)	(54)
Goodwill and Indefinite-Lived Assets, Net	$ 7,963	$ 7,963