Consolidated Statement of Stockholders' Equity - USD ($) $ in Millions	2007 Incentive Plan [Member] Common Stock [Member] Common Class A [Member]	2007 Incentive Plan [Member] Common Stock [Member]	2007 Incentive Plan [Member] Retained Earnings [Member]	2007 Incentive Plan [Member] Treasury Stock [Member] Common Class A [Member]	2007 Incentive Plan [Member] Treasury Stock [Member]	2007 Incentive Plan [Member] AOCI Attributable to Parent [Member]	2007 Incentive Plan [Member]	The 2017 Equity and Incentive Compensation Plan [Member] Common Stock [Member] Common Class A [Member]	The 2017 Equity and Incentive Compensation Plan [Member] Common Stock [Member]	The 2017 Equity and Incentive Compensation Plan [Member] Treasury Stock [Member] Common Class A [Member]	The 2017 Equity and Incentive Compensation Plan [Member] Treasury Stock [Member]	Restricted Stock [Member] Common Stock [Member] Common Class A [Member]	Restricted Stock [Member] Common Stock [Member]	Restricted Stock [Member] Retained Earnings [Member]	Restricted Stock [Member] Treasury Stock [Member] Common Class A [Member]	Restricted Stock [Member] Treasury Stock [Member]	Restricted Stock [Member] AOCI Attributable to Parent [Member]	Restricted Stock [Member]	Restricted Stock Units (RSUs) [Member] Common Stock [Member] Common Class A [Member]	Restricted Stock Units (RSUs) [Member] Common Stock [Member]	Restricted Stock Units (RSUs) [Member] Retained Earnings [Member]	Restricted Stock Units (RSUs) [Member] Treasury Stock [Member] Common Class A [Member]	Restricted Stock Units (RSUs) [Member] Treasury Stock [Member]	Restricted Stock Units (RSUs) [Member] AOCI Attributable to Parent [Member]	Restricted Stock Units (RSUs) [Member]	Common Stock [Member] Common Class A [Member]	Common Stock [Member]	Retained Earnings [Member]	Treasury Stock [Member] Common Class A [Member]	Treasury Stock [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Dec. 31, 2016																										8,073,993	71,229,497		(1,669,131)	(5,135,406)
Balance at Dec. 31, 2016																										$ 22	$ 658	$ (101)	$ (23)	$ (45)	$ (18)	$ 493
Adoption of ASU 2016-09 excess tax benefit for stock-based compensation																										0	0	1	0	0	0	1
Net income																										0	0	262	0	0	0	262
Adjustment to pension liability, net of income tax																										$ 0	$ 0	0	$ 0	$ 0	(4)	(4)
Underwritten public offering (in shares)																										0	17,250,000		0	0
Underwritten public offering																										$ 0	$ 239	0	$ 0	$ 0	0	239
401(k) plan (in shares)																										0	1,224		0	0
401(k) plan																										$ 0	$ 0	0	$ 0	$ 0	0	0
Restricted stock awards (in shares)	198,220	307,943		(81,561)	(77,632)			76,856	0	0	0
Restricted stock awards	$ 0	$ 0	$ 0	$ (1)	$ (1)	$ 0	$ (2)
Repurchase of common stock (in shares)																										0	0		0	(322,038)
Repurchase of common stock																										$ 0	$ 0	0	$ 0	$ (4)	0	(4)
Stock-based compensation																										3	6	0	0	0	0	9
Adjustment to pension liability, net of income tax																										$ 0	$ 0	0	$ 0	$ 0	4	4
Adoption of ASU 2018-02																															0
Balance (in shares) at Dec. 31, 2017																										8,349,069	88,788,664		(1,750,692)	(5,535,076)
Balance at Dec. 31, 2017																										$ 25	$ 903	162	$ (24)	$ (50)	(22)	994
Net income																										0	0	210	0	0	0	211
Adjustment to pension liability, net of income tax																										$ 0	$ 0	0	$ 0	$ 0	1	1
Restricted stock awards (in shares)												220,080	391,836		(89,422)	(107,456)			0	209,500		0	(82,201)
Restricted stock awards												$ 0	$ 0	$ 0	$ (2)	$ (2)	$ 0	$ (4)	$ 0	$ 0	$ 0	$ 0	$ (1)	$ 0	$ (1)
Repurchase of common stock (in shares)																										0	0		0	(1,551,710)
Repurchase of common stock																										$ 0	$ 0	0	$ 0	$ (19)	0	(19)
Stock-based compensation																										$ 2	$ 5	0	$ 0	$ 0	0	7
Forfeiture of restricted stock awards (in shares)																										0	(91,057)		0	0
Forfeiture of restricted stock awards																										$ 0	$ (1)	0	$ 0	$ 0	0	(1)
Adjustment to pension liability, net of income tax																										$ 0	$ 0	0	$ 0	$ 0	(1)	(1)
Adoption of ASU 2018-02																															0
Balance (in shares) at Dec. 31, 2018																										8,569,149	89,298,943		(1,840,114)	(7,276,443)
Balance at Dec. 31, 2018																										$ 27	$ 907	372	$ (26)	$ (72)	(21)	1,187
Net income																										0	0	179	0	0	0	179
Adjustment to pension liability, net of income tax																										$ (0)	$ (0)	(0)	$ (0)	$ (0)	5	5
401(k) plan (in shares)																										0	196,509		0	0
401(k) plan																										$ 0	$ 4	0	$ 0	$ 0	0	4
Restricted stock awards (in shares)																										199,810	751,463		(47,653)	(152,371)
Restricted stock awards																										$ 0	$ 0	0	$ 0	$ (3)	0	(3)
Repurchase of common stock (in shares)																										0	0		0	(1,659,684)
Repurchase of common stock																										$ 0	$ 0	0	$ 0	$ (32)	0	(32)
Stock-based compensation																										4	12	0	0	0	0	16
Preferred stock dividends																										0	0	(52)	0	0	0	(52)
Adjustment to pension liability, net of income tax																										$ 0	$ 0	0	$ 0	$ 0	(5)	(5)
Acquisitions of television businesses and licenses (in shares)																										0	11,499,945		0	0
Acquisitions of television businesses and licenses																										$ 0	$ 170	0	$ 0	$ 0	0	170
Adoption of ASU 2018-02																										$ 0	$ 0	5	$ 0	$ 0	(5)	0
Balance (in shares) at Dec. 31, 2019																										8,768,959	101,746,860		(1,887,767)	(9,088,498)
Balance at Dec. 31, 2019																										$ 31	$ 1,093	$ 504	$ (26)	$ (107)	$ (31)	$ 1,464