Note 12 - Segment Information - Segment Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Revenue (less agency commissions)	$ 823	$ 801
Operating expenses before depreciation, amortization and gain on disposal of assets, net	632	640
Depreciation and amortization	67	84
Operating expenses	699	734
Operating income (loss)	124	67
Interest expense	115	104
Capital expenditures (excluding business combinations)	34	110
Goodwill	2,643		$ 2,643
Total Assets	10,735		10,640
Loss on disposal of assets, net	0	10
Broadcasting, Segment [Member]
Revenue (less agency commissions)	799	779
Production Companies, Segment [Member]
Revenue (less agency commissions)	24	22
Operating Segments [Member] | Broadcasting, Segment [Member]
Revenue (less agency commissions)	799	779
Operating expenses before depreciation, amortization and gain on disposal of assets, net	583	555
Depreciation and amortization	62	80
Operating expenses	645	644
Operating income (loss)	154	135
Interest expense	0	0
Capital expenditures (excluding business combinations)	19	19
Goodwill	2,615		2,615
Total Assets	9,850		9,897
Loss on disposal of assets, net		9
Operating Segments [Member] | Production Companies, Segment [Member]
Revenue (less agency commissions)	24	22
Operating expenses before depreciation, amortization and gain on disposal of assets, net	21	59
Depreciation and amortization	4	3
Operating expenses	25	63
Operating income (loss)	(1)	(41)
Interest expense	0	0
Capital expenditures (excluding business combinations)	15	91
Goodwill	28		28
Total Assets	683		658
Loss on disposal of assets, net		1
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment [Member]
Revenue (less agency commissions)	0	0
Operating expenses before depreciation, amortization and gain on disposal of assets, net	28	26
Depreciation and amortization	1	1
Operating expenses	29	27
Operating income (loss)	(29)	(27)
Interest expense	115	104
Capital expenditures (excluding business combinations)	0	0
Goodwill	0		0
Total Assets	$ 202		$ 85
Loss on disposal of assets, net		$ 0