Note 14 - Segment Information - Segment Information (Details) - USD ($) $ in Millions			12 Months Ended
		Jun. 04, 2024	Dec. 31, 2024		Dec. 31, 2023		Dec. 31, 2022
Revenue (less agency commissions)			$ 3,644		$ 3,281		$ 3,676
Payroll and employee benefits			971	[1]	940	[2]	869	[2]
Network affiliation fees			932		937		903
Programming			128	[1]	123	[2]	124	[2]
Depreciation and amortization			269	[1]	339	[2]	336	[2]
Other segment items	[3]		493	[1]	516	[2]	454	[2]
Segment operating income (loss)			851		383		990
Other income (expense):
Miscellaneous income (expense), net			117		7		(4)
Impairment of investments			(25)		(29)		(18)
Interest expense			(485)		(440)		(354)
Gain on early extinguishment of debt		$ 10	34		(3)		0
Income before income tax			492		(82)		614
Capital expenditures (excluding business combinations)			143		348		436
Goodwill			2,642		2,643		2,663
Investments in broadcasting and technology companies			66		85		105
Total assets			10,542		10,640		11,152
Revenue (less agency commissions)			3,644		3,281		3,676
Payroll and employee benefits			971	[1]	940	[2]	869	[2]
Network affiliation fees			932		937		903
Programming			128	[1]	123	[2]	124	[2]
Depreciation and amortization			269	[1]	339	[2]	336	[2]
Goodwill and Intangible Asset Impairment			0		43	[2]	0
Other segment items	[3]		493	[1]	516	[2]	454	[2]
Segment operating income (loss)			851		383		990
Loss on early extinguishment of debt		$ 10	34		(3)		0
Capital expenditures (excluding business combinations)					348		436
Broadcasting, Segment [Member]
Revenue (less agency commissions)			3,539		3,195		3,583
Other income (expense):
Revenue (less agency commissions)			3,539		3,195		3,583
Production Companies, Segment [Member]
Revenue (less agency commissions)			105		86		93
Other income (expense):
Revenue (less agency commissions)			105		86		93
Other Operating Segment [Member]
Revenue (less agency commissions)			0		0		0
Payroll and employee benefits			55	[1]	54	[2]	50	[2]
Network affiliation fees			0		0		0
Programming			0	[1]	0	[2]	0	[2]
Depreciation and amortization			2	[1]	4	[2]	3	[2]
Other segment items	[3]		49	[1]	58	[2]	54	[2]
Segment operating income (loss)			(106)		(116)		(107)
Other income (expense):
Capital expenditures (excluding business combinations)			0
Goodwill			0		0		0
Investments in broadcasting and technology companies			13		13		13
Total assets			225		85		173
Revenue (less agency commissions)			0		0		0
Payroll and employee benefits			55	[1]	54	[2]	50	[2]
Network affiliation fees			0		0		0
Programming			0	[1]	0	[2]	0	[2]
Depreciation and amortization			2	[1]	4	[2]	3	[2]
Goodwill and Intangible Asset Impairment	[2]				0
Other segment items	[3]		49	[1]	58	[2]	54	[2]
Segment operating income (loss)			(106)		(116)		(107)
Capital expenditures (excluding business combinations)					1		6
Operating Segments [Member] | Broadcasting, Segment [Member]
Revenue (less agency commissions)			3,539		3,195		3,583
Payroll and employee benefits			892	[1]	865	[2]	799	[2]
Network affiliation fees			932		937		903
Programming			108	[1]	98	[2]	98	[2]
Depreciation and amortization			248	[1]	322	[2]	321	[2]
Other segment items	[3]		403	[1]	386	[2]	363	[2]
Segment operating income (loss)			956		587		1,099
Other income (expense):
Capital expenditures (excluding business combinations)			97
Goodwill			2,614		2,615		2,618
Investments in broadcasting and technology companies			49		68		86
Total assets			9,636		9,897		10,444
Revenue (less agency commissions)			3,539		3,195		3,583
Payroll and employee benefits			892	[1]	865	[2]	799	[2]
Network affiliation fees			932		937		903
Programming			108	[1]	98	[2]	98	[2]
Depreciation and amortization			248	[1]	322	[2]	321	[2]
Goodwill and Intangible Asset Impairment	[2]				0
Other segment items	[3]		403	[1]	386	[2]	363	[2]
Segment operating income (loss)			956		587		1,099
Capital expenditures (excluding business combinations)					107		163
Operating Segments [Member] | Production Companies, Segment [Member]
Revenue (less agency commissions)			105		86		93
Payroll and employee benefits			24	[1]	21	[2]	20	[2]
Network affiliation fees			0		0		0
Programming			20	[1]	25	[2]	26	[2]
Depreciation and amortization			19	[1]	13	[2]	12	[2]
Other segment items	[3]		41	[1]	72	[2]	37	[2]
Segment operating income (loss)			1		(88)		(2)
Other income (expense):
Capital expenditures (excluding business combinations)			46
Goodwill			28		28		45
Investments in broadcasting and technology companies			4		4		6
Total assets			681		658		535
Revenue (less agency commissions)			105		86		93
Payroll and employee benefits			24	[1]	21	[2]	20	[2]
Network affiliation fees			0		0		0
Programming			20	[1]	25	[2]	26	[2]
Depreciation and amortization			19	[1]	13	[2]	12	[2]
Goodwill and Intangible Asset Impairment	[2]				43
Other segment items	[3]		41	[1]	72	[2]	37	[2]
Segment operating income (loss)			$ 1		(88)		(2)
Capital expenditures (excluding business combinations)					$ 240		$ 267

[1] The significant expense categories and amounts align with the segment-level information that is regularly provided to the chief operating decision maker. Intersegment expenses are included within the amounts shown.

[2] The significant expense categories and amounts align with the segment-level information that is regularly provided to the chief operating decision maker. Intersegment expenses are included within the amounts shown.

[3] Other segment items for each reportable segment includes; (gain) loss on disposal of assets, professional services expense, repairs and maintenance expense, occupancy expense (including property tax expense), and certain overhead expenses.