Note 11 - Goodwill and Intangible Assets - Changes in Goodwill and Other Intangible Assets, Net (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Broadcast licenses	$ 5,320
Broadcast licenses	5,311
Goodwill,net	2,643
Goodwill, acquisitions and adjustments	1
Goodwill,net	2,642	$ 2,643
Finite-lived intangible assets	415
Amortization	(94)	$ (147)
Finite-lived intangible assets	321
Total intangible assets net of accumulated amortization	8,378
Total intangible assets net of accumulated amortization	(10)
Total intangible assets net of accumulated amortization	8,274
Finite-Lived Intangible Assets [Member]
Acquisition and adjustments	0
Acquisition and adjustments	0
Finite-lived intangible assets	321
Finite-lived Intangible Assets [Member]
Amortization	(94)
Broadcast Licenses [Member]
Broadcast licenses	5,320
Acquisition and adjustments	(9)
Broadcast licenses	5,311
Acquisition and adjustments	$ 9