Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenue (less agency commissions)	$ 601	$ 604	$ 1,692	$ 1,589
Operating expenses before depreciation, amortization and loss (gain) on disposal of assets, net:
Corporate and administrative	32	15	75	47
Depreciation	26	27	76	69
Amortization of intangible assets	28	26	81	78
Loss (gain) on disposal of assets, net	51	(10)	46	(23)
Operating expenses	534	392	1,416	1,188
Operating income	67	212	276	401
Other (expense) income:
Miscellaneous (expense), net	(1)	(2)	(7)	(5)
Interest expense	(48)	(45)	(143)	(143)
Income before income taxes	18	165	126	253
Income tax expense	35	43	65	67
Net (loss) income	(17)	122	61	186
Preferred stock dividends	13	13	39	39
Net (loss) income attributable to common stockholders	$ (30)	$ 109	$ 22	$ 147
Basic per share information:
Net (loss) income attributable to common stockholders (in dollars per share)	$ (0.32)	$ 1.15	$ 0.23	$ 1.52
Weighted-average shares outstanding (in shares)	95	95	94	97
Diluted per share information:
Net (loss) income attributable to common stockholders (in dollars per share)	$ (0.32)	$ 1.14	$ 0.23	$ 1.52
Weighted-average shares outstanding (in shares)	95	96	95	97
Dividends declared per common share (in dollars per share)	$ 0.08	$ 0	$ 0.24	$ 0
Broadcasting, Segment [Member]
Revenue (less agency commissions)	$ 581	$ 593	$ 1,648	$ 1,557
Operating expenses before depreciation, amortization and loss (gain) on disposal of assets, net:
Cost of goods and services sold	384	326	1,099	985
Operating expenses			1,291	1,100
Operating income			357	457
Other (expense) income:
Interest expense			0	0
Production Companies, Segment [Member]
Revenue (less agency commissions)	20	11	44	32
Operating expenses before depreciation, amortization and loss (gain) on disposal of assets, net:
Cost of goods and services sold	$ 13	$ 8	39	32
Operating expenses			48	39
Operating income			(4)	(7)
Other (expense) income:
Interest expense			$ 0	$ 0