Note 14 - Segment Information - Segment Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenue (less agency commissions)	$ 3,281	$ 3,676	$ 2,413
Operating expenses before depreciation, amortization, impairment and loss on disposal of assets, net:	2,495	2,352	1,769
Depreciation and amortization	339	336	221
Total intangible assets net of accumulated amortization	43	0	0
Loss on disposal of assets, net	21	(2)	42
Total operating expenses	2,898	2,686	2,032
Operating income (loss)	383	990	381
Interest expense	440	354	205
Capital expenditures (excluding business combinations)	348	436	207
Goodwill	2,643	2,663	2,649
Total assets	10,640	11,152	11,108
Broadcasting, Segment [Member]
Revenue (less agency commissions)	3,195	3,583	2,340
Production Companies, Segment [Member]
Revenue (less agency commissions)	86	93	73
Operating Segments [Member] | Broadcasting, Segment [Member]
Revenue (less agency commissions)	3,195	3,583	2,340
Operating expenses before depreciation, amortization, impairment and loss on disposal of assets, net:	2,268	2,165	1,548
Depreciation and amortization	322	321	206
Total intangible assets net of accumulated amortization	0
Loss on disposal of assets, net	18	(2)	41
Total operating expenses	2,608	2,484	1,795
Operating income (loss)	587	1,099	545
Interest expense	0	0	0
Capital expenditures (excluding business combinations)	107	163	94
Goodwill	2,615	2,618	2,604
Total assets	9,897	10,444	10,592
Operating Segments [Member] | Production Companies, Segment [Member]
Revenue (less agency commissions)	86	93	73
Operating expenses before depreciation, amortization, impairment and loss on disposal of assets, net:	115	83	62
Depreciation and amortization	13	12	12
Total intangible assets net of accumulated amortization	43
Loss on disposal of assets, net	3	0	0
Total operating expenses	174	95	74
Operating income (loss)	(88)	(2)	(1)
Interest expense	0	0	0
Capital expenditures (excluding business combinations)	240	267	110
Goodwill	28	45	45
Total assets	658	535	269
Segment Reconciling Items [Member]
Revenue (less agency commissions)	0	0	0
Operating expenses before depreciation, amortization, impairment and loss on disposal of assets, net:	112	104	159
Depreciation and amortization	4	3	3
Total intangible assets net of accumulated amortization	0
Loss on disposal of assets, net	0	0	1
Total operating expenses	116	107	163
Operating income (loss)	(116)	(107)	(163)
Interest expense	440	354	205
Capital expenditures (excluding business combinations)		6	3
Goodwill	0	0	0
Total assets	85	$ 173	$ 247
Corporate, Non-Segment [Member]
Capital expenditures (excluding business combinations)	$ 1