Note 12 - Segment Information - Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Revenue (less agency commissions)	$ 451	$ 508	$ 985	$ 1,026
Operating expenses before depreciation, amortization and (gain) loss on disposal of assets, net:			715	783
Depreciation and amortization			94	97
(Gain) loss on disposal of assets, net	(7)	(3)	(13)	(13)
Operating expenses	386	389	796	867
Operating income (loss)	65	119	189	159
Interest expense	46	58	98	116
Capital expenditures (excluding business combinations)			51	44
Goodwill	1,446		1,446		$ 1,446
Total Assets	7,040		7,040		6,972
Corporate, Non-Segment [Member]
Revenue (less agency commissions)			0	0
Operating expenses before depreciation, amortization and (gain) loss on disposal of assets, net:			32	69
Depreciation and amortization			1	1
(Gain) loss on disposal of assets, net			0	0
Operating expenses			33	70
Operating income (loss)			(33)	(70)
Interest expense			98	116
Capital expenditures (excluding business combinations)			0	5
Goodwill	0		0		0
Total Assets	496		496		289
Broadcasting, Segment [Member]
Revenue (less agency commissions)	449	499	964	980
Operating expenses before depreciation, amortization and (gain) loss on disposal of assets, net:			659	670
Depreciation and amortization			87	90
(Gain) loss on disposal of assets, net			(13)	(13)
Operating expenses			733	747
Operating income (loss)			231	233
Interest expense			0	0
Capital expenditures (excluding business combinations)			51	39
Goodwill	1,405		1,405		1,405
Total Assets	6,414		6,414		6,530
Production Companies, Segment [Member]
Revenue (less agency commissions)	2	$ 9	21	46
Operating expenses before depreciation, amortization and (gain) loss on disposal of assets, net:			24	44
Depreciation and amortization			6	6
(Gain) loss on disposal of assets, net			0	0
Operating expenses			30	50
Operating income (loss)			(9)	(4)
Interest expense			0	0
Capital expenditures (excluding business combinations)			0	$ 0
Goodwill	41		41		41
Total Assets	$ 130		$ 130		$ 153