Note 13 - Goodwill and Intangible Assets - Changes in Goodwill and Other Intangible Assets, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023		Dec. 31, 2022
Goodwill, net	$ 2,643	$ 2,663
Goodwill, acquisitions and adjustments	(1)	(4)
Goodwill		(16)
Goodwill, net	2,642	2,643		$ 2,663
Broadcast licenses	5,320
Broadcast licenses	5,311	5,320
Finite-lived intangible assets	415
Amortization	(125)	(194)		(207)
Finite-lived intangible assets	290	415
Total intangible assets net of accumulated amortization	8,378	8,630
Total intangible assets net of accumulated amortization	(10)	(15)
Total intangible assets net of accumulated amortization	0	(43)	[1]	0
Total intangible assets net of accumulated amortization	8,243	8,378		8,630
Finite-lived Intangible Assets [Member]
Acquisition and adjustments	0	0
Finite-lived intangible assets	415	636
Finite-lived intangible assets	0	(27)
Amortization	(125)	(194)
Finite-lived intangible assets	290	415		636
Broadcast Licenses [Member]
Goodwill	0
Broadcast licenses	5,320	5,331
Acquisition and adjustments	(9)	(11)
Broadcast licenses	$ 5,311	$ 5,320		$ 5,331

[1] The significant expense categories and amounts align with the segment-level information that is regularly provided to the chief operating decision maker. Intersegment expenses are included within the amounts shown.