Note 11 - Goodwill and Intangible Assets - Intangible Assets and Related Accumulated Amortization (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Goodwill, Gross	$ 1,547	$ 1,545
Goodwill	1,448	1,446
Other intangible assets, net	391	460
Intangible Assets Gross (Including Goodwill)	5,759	5,744
Accumulated Amortization Intangible Assets	(343)	(265)
Intangible Assets, Net (Including Goodwill)	5,416	5,479
Network Affiliate [Member]
Finite-Lived Intangible Assets, Gross	62	56
Finite-Lived Intangible Assets, Accumulated Amortization	(25)	(17)
Other intangible assets, net	37	39
Other Intangible Assets [Member]
Finite-Lived Intangible Assets, Gross	618	615
Finite-Lived Intangible Assets, Accumulated Amortization	(264)	(194)
Other intangible assets, net	354	421
Intangible Assets Subject to Amortization [Member]
Finite-Lived Intangible Assets, Gross	680	671
Finite-Lived Intangible Assets, Accumulated Amortization	(289)	(211)
Other intangible assets, net	391	460
Broadcast Licenses [Member]
Indefinite-lived Intangible Assets (Excluding Goodwill), Gross	3,631	3,627
Indefinite-Lived Intangible Assets (Excluding Goodwill), Accumulated Amortization	(54)	(54)
Indefinite-Lived Intangible Assets (Excluding Goodwill)	3,577	3,573
Goodwill Not Amortizable [Member]
Goodwill, Gross	1,448	1,446
Goodwill, Accumulated Amortization	0	0
Goodwill	1,448	1,446
Intangible Assets Not Subject to Amortization [Member]
Goodwill and Indefinite-Lived Intangible Assets, Gross	5,079	5,073
Goodwill and Indefinite-lived Intangible Assets, Accumulated Amortization	(54)	(54)
Goodwill and Indefinite-Lived Assets, Net	$ 5,025	$ 5,019