Note 14 - Segment Information - Segment Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Revenue (less agency commissions)	$ 518	$ 226
Operating expenses before depreciation, amortization and (gain) loss on disposal of assets, net:	439	158
Depreciation and amortization	49	19
(Gain) loss on disposal of assets, net	10	1
Operating expenses	478	176
Operating income	40	50
Interest expense	58	24
Capital expenditures (excluding business combinations)	18	6
Goodwill	1,434		$ 612
Total Assets	6,995		4,213
Corporate, Non-Segment [Member]
Revenue (less agency commissions)
Operating expenses before depreciation, amortization and (gain) loss on disposal of assets, net:	48	8
Depreciation and amortization	1
(Gain) loss on disposal of assets, net	1
Operating expenses	48	8
Operating income	(48)	(8)
Interest expense	58	24
Capital expenditures (excluding business combinations)	3
Goodwill
Total Assets	2		971
Broadcasting, Segment [Member]
Revenue (less agency commissions)	481	226
Operating expenses before depreciation, amortization and (gain) loss on disposal of assets, net:	356	150
Depreciation and amortization	45	19
(Gain) loss on disposal of assets, net	9	1
Operating expenses	392	168
Operating income	89	58
Interest expense
Capital expenditures (excluding business combinations)	15	6
Goodwill	1,394		612
Total Assets	6,990		3,242
Production Companies, Segment [Member]
Revenue (less agency commissions)	37
Operating expenses before depreciation, amortization and (gain) loss on disposal of assets, net:	35
Depreciation and amortization	3
(Gain) loss on disposal of assets, net
Operating expenses	38
Operating income	(1)
Interest expense
Capital expenditures (excluding business combinations)
Goodwill	40
Total Assets	$ 3