Note 13 - Segment Information - Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Revenue (less agency commissions)	$ 909	$ 601	$ 2,604	$ 1,692
Operating expenses before depreciation, amortization and loss on disposal of assets, net:			1,731	1,213
Depreciation and amortization			252	157
Loss on disposal of assets, net	1	(51)	6	(46)
Operating expenses	664	534	1,977	1,416
Operating income (loss)	245	67	627	276
Interest expense	94	48	254	143
Capital expenditures (excluding business combinations)			298	154
Goodwill, net	2,657		2,657		$ 2,649
Total assets	11,183		11,183		11,108
(Gain) loss on disposal of assets, net	(1)	51	(6)	46
Broadcasting, Segment [Member]
Revenue (less agency commissions)	889	581	2,548	1,648
Operating expenses before depreciation, amortization and loss on disposal of assets, net:			1,595	1,099
Depreciation and amortization			240	146
Loss on disposal of assets, net			6	(46)
Operating expenses			1,829	1,291
Operating income (loss)			719	357
Interest expense			0	0
Capital expenditures (excluding business combinations)			114	63
Goodwill, net	2,612		2,612		2,604
Total assets	10,565		10,565		10,592
(Gain) loss on disposal of assets, net			(6)	46
Production Companies, Segment [Member]
Revenue (less agency commissions)	20	$ 20	56	44
Operating expenses before depreciation, amortization and loss on disposal of assets, net:			56	39
Depreciation and amortization			10	9
Loss on disposal of assets, net			0	0
Operating expenses			66	48
Operating income (loss)			(10)	(4)
Interest expense			0	0
Capital expenditures (excluding business combinations)			181	88
Goodwill, net	45		45		45
Total assets	358		358		269
(Gain) loss on disposal of assets, net			0	0
Other Segments [Member]
Revenue (less agency commissions)			0	0
Operating expenses before depreciation, amortization and loss on disposal of assets, net:			80	75
Depreciation and amortization			2	2
Loss on disposal of assets, net			0	0
Operating expenses			82	77
Operating income (loss)			(82)	(77)
Interest expense			254	143
Capital expenditures (excluding business combinations)			3	3
Goodwill, net	0		0		0
Total assets	$ 260		260		$ 247
(Gain) loss on disposal of assets, net			$ 0	$ 0