Note 12 - Segment Information - Segment Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Revenue (less agency commissions)	$ 827	$ 544
Operating expenses before depreciation, amortization and gain on disposal of assets, net	584	396
Depreciation and amortization	84	51
Gain on disposal of assets, net	(5)	(4)
Operating expenses	663	443
Operating income (loss)	164	101
Interest expense	79	48
Capital expenditures (excluding business combinations)	47	13
Goodwill	2,649		$ 2,649
Total Assets	11,134		11,108
Broadcasting, Segment [Member]
Revenue (less agency commissions)	804	530
Operating expenses before depreciation, amortization and gain on disposal of assets, net	530	361
Depreciation and amortization	80	47
Gain on disposal of assets, net	(5)	(4)
Operating expenses	605	404
Operating income (loss)	199	126
Interest expense	0	0
Capital expenditures (excluding business combinations)	17	13
Goodwill	2,604		2,604
Total Assets	10,548		10,592
Production Companies, Segment [Member]
Revenue (less agency commissions)	23	14
Operating expenses before depreciation, amortization and gain on disposal of assets, net	26	17
Depreciation and amortization	3	3
Gain on disposal of assets, net	0	0
Operating expenses	29	20
Operating income (loss)	(6)	(6)
Interest expense	0	0
Capital expenditures (excluding business combinations)	30	0
Goodwill	45		45
Total Assets	281		269
Other Segments [Member]
Revenue (less agency commissions)	0	0
Operating expenses before depreciation, amortization and gain on disposal of assets, net	28	18
Depreciation and amortization	1	1
Gain on disposal of assets, net	0	0
Operating expenses	29	19
Operating income (loss)	(29)	(19)
Interest expense	79	48
Capital expenditures (excluding business combinations)	0	$ 0
Goodwill	0		0
Total Assets	$ 305		$ 247