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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
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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

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