Note 13 - Segment Information - Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Revenue (less agency commissions)	$ 813	$ 868	$ 1,614	$ 1,695
Operating expenses before depreciation, amortization and gain on disposal of assets, net:			1,233	1,151
Depreciation and amortization			169	167
Loss on disposal of assets, net			26	(5)
Operating expenses	694	650	1,428	1,313
Operating income (loss)	119	218	186	382
Interest expense	109	81	213	160
Capital expenditures (excluding business combinations)			213	159
Goodwill	2,660		2,660		$ 2,663
Total assets	10,810		10,810		11,152
Gain on disposal of assets, net			26	(5)
Operating expenses	694	650	1,428	1,313
Broadcasting, Segment [Member]
Revenue (less agency commissions)	801	855	1,580	1,659
Production Companies, Segment [Member]
Revenue (less agency commissions)	12	$ 13	34	36
Operating Segments [Member] | Broadcasting, Segment [Member]
Revenue (less agency commissions)			1,580	1,659
Operating expenses before depreciation, amortization and gain on disposal of assets, net:			1,107	1,058
Depreciation and amortization			160	159
Loss on disposal of assets, net			24	(5)
Operating expenses			1,291	1,212
Operating income (loss)			289	447
Interest expense			0	0
Capital expenditures (excluding business combinations)			41	66
Goodwill	2,615		2,615		2,618
Total assets	9,995		9,995		10,444
Gain on disposal of assets, net			24	(5)
Operating expenses			1,291	1,212
Operating Segments [Member] | Production Companies, Segment [Member]
Revenue (less agency commissions)			34	36
Operating expenses before depreciation, amortization and gain on disposal of assets, net:			70	40
Depreciation and amortization			7	6
Loss on disposal of assets, net			2	0
Operating expenses			79	46
Operating income (loss)			(45)	(10)
Interest expense			0	0
Capital expenditures (excluding business combinations)			168	93
Goodwill	45		45		45
Total assets	644		644		535
Gain on disposal of assets, net			2	0
Operating expenses			79	46
Segment Reconciling Items [Member]
Revenue (less agency commissions)			0	0
Operating expenses before depreciation, amortization and gain on disposal of assets, net:			56	53
Depreciation and amortization			2	2
Loss on disposal of assets, net			0	0
Operating expenses			58	55
Operating income (loss)			(58)	(55)
Interest expense			213	160
Capital expenditures (excluding business combinations)			4	0
Goodwill	0		0		0
Total assets	$ 171		171		$ 173
Gain on disposal of assets, net			0	0
Operating expenses			$ 58	$ 55