Note 12 - Segment Information - Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		18 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Dec. 31, 2023
Revenue	$ 826	$ 813	$ 1,649	$ 1,614
Operating expenses before depreciation, amortization and gain on disposal of assets, net:			1,239	1,233
Depreciation and amortization			135	169
Gain on disposal of assets, net	(1)	16	(1)	26
Operating expenses	674	694	1,373	1,428
Operating income (loss)	152	119	276	186
Interest expense	118	109	233	213
Capital expenditures (excluding business combinations)			63	213
Goodwill	2,643		2,643		$ 2,643	$ 2,643
Total assets	10,634		10,634		10,634	10,640
Loss on disposal of assets, net	1	(16)	1	(26)
Broadcasting, Segment [Member]
Revenue	808	801	1,607	1,580
Production Companies, Segment [Member]
Revenue	18	$ 12	42	34
Operating Segments [Member] | Broadcasting, Segment [Member]
Revenue			1,607	1,580
Operating expenses before depreciation, amortization and gain on disposal of assets, net:			1,148	1,107
Depreciation and amortization			124	160
Gain on disposal of assets, net			(1)	24
Operating expenses			1,271	1,291
Operating income (loss)			336	289
Interest expense			0	0
Capital expenditures (excluding business combinations)			41	41
Goodwill	2,615		2,615		2,615	2,615
Total assets	9,846		9,846		9,846	9,897
Loss on disposal of assets, net			1	(24)
Operating Segments [Member] | Production Companies, Segment [Member]
Revenue			42	34
Operating expenses before depreciation, amortization and gain on disposal of assets, net:			35	70
Depreciation and amortization			10	7
Gain on disposal of assets, net			0	2
Operating expenses			45	79
Operating income (loss)			(3)	(45)
Interest expense			0		0
Capital expenditures (excluding business combinations)			22	168
Goodwill	28		28		28	28
Total assets	653		653		653	658
Loss on disposal of assets, net			(0)	(2)
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment [Member]
Revenue			0	0
Operating expenses before depreciation, amortization and gain on disposal of assets, net:			56	56
Depreciation and amortization			1	2
Gain on disposal of assets, net			0	0
Operating expenses			57	58
Operating income (loss)			(57)	(58)
Interest expense			233	213
Capital expenditures (excluding business combinations)			0	4
Goodwill	0		0		0	0
Total assets	$ 135		135		$ 135	$ 85
Loss on disposal of assets, net			$ (0)	$ (0)