Consolidated Statements of Stockholders' Equity - USD ($) $ in Millions	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, 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
Net income															0	0	410	0	0	0	410
Preferred stock dividends															0	0	(52)	0	0	0	(52)
Adjustment to pension liability, net of income tax															$ 0	$ 0	0	$ 0	$ 0	(8)	(8)
401(k) Plan (in shares)															0	430,899		0	0
401(k) Plan															$ 0	$ 4	0	$ 0	$ 0	0	4
2007 Long Term Incentive Plan - stock options exercised (in shares)															0	274,746		0	(154,935)
2007 Long Term Incentive Plan - stock options exercised															$ 0	$ 0	0	$ 0	$ (2)	0	(2)
Restricted stock awards (in shares)	166,814	359,481		0	(146,716)			0	374,500		0	(112,564)
Restricted stock awards	$ 0	$ 0	$ 0	$ 0	$ (2)	$ 0	$ (2)	$ 0	$ 0	$ 0	$ 0	$ (2)	$ 0	$ (2)
Forfeiture of restricted stock awards (in shares)															0	(85,630)		0	0
Forfeiture of restricted stock awards															$ 0	$ 0	0	$ 0	$ 0	0	0
Repurchase of common stock (in shares)															0	0		0	(5,457,884)
Repurchase of common stock															$ 0	$ 0	0	$ 0	$ (75)	0	(75)
Stock-based compensation															$ 3	$ 13	0	$ 0	$ 0	0	16
Balance (in shares) at Dec. 31, 2020															8,935,773	103,100,856		(1,887,767)	(14,960,597)
Balance at Dec. 31, 2020															$ 34	$ 1,110	862	$ (26)	$ (188)	(39)	1,753
Net income															0	0	90	0	0	0	90
Preferred stock dividends															0	0	(52)	0	0	0	(52)
Adjustment to pension liability, net of income tax															$ 0	$ 0	0	$ 0	$ 0	12	12
401(k) Plan (in shares)															0	394,044		0	0
401(k) Plan															$ 0	$ 8	0	$ 0	$ 0	0	8
Restricted stock awards (in shares)	488,918	731,374		(110,412)	(267,308)			0	60,050		0	(18,275)
Restricted stock awards	$ 0	$ 0	0	$ (2)	$ (5)	0	(7)	$ 0	$ 0	0	$ 0	$ 0	0	0
Repurchase of common stock (in shares)															0	0		0	(1,501,088)
Repurchase of common stock															$ 0	$ 0	0	$ 0	$ (30)	0	(30)
Stock-based compensation															5	9	0	0	0	0	14
Common stock dividends															$ 0	$ 0	(31)	$ 0	$ 0	0	(31)
Balance (in shares) at Dec. 31, 2021															9,424,691	104,286,324		(1,998,179)	(16,747,268)
Balance at Dec. 31, 2021															$ 39	$ 1,127	869	$ (28)	$ (223)	(27)	1,757
Net income															0	0	455	0	0	0	455
Preferred stock dividends															0	0	(52)	0	0	0	(52)
Adjustment to pension liability, net of income tax															$ 0	$ 0	0	$ 0	$ 0	15	15
401(k) Plan (in shares)															0	307,885		0	0
401(k) Plan															$ 0	$ 7	0	$ 0	$ 0	0	7
Restricted stock awards (in shares)	250,448	400,927		(132,545)	(210,367)			0	108,921		0	(32,958)
Restricted stock awards	$ 0	$ 0	$ 0	$ (3)	$ (4)	$ 0	$ (7)	$ 0	$ 0	$ 0	$ 0	$ (1)	$ 0	$ (1)
Stock-based compensation															6	16	0	0	0	0	22
Common stock dividends															$ 0	$ 0	(30)	$ 0	$ 0	0	(30)
Balance (in shares) at Dec. 31, 2022															9,675,139	105,104,057		(2,130,724)	(19,636,786)
Balance at Dec. 31, 2022															$ 45	$ 1,150	$ 1,242	$ (31)	$ (278)	$ (12)	$ 2,116