Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - 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, 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	39	0	0	0	39
Preferred stock dividends															0	0	(13)	0	0	0	(13)
Common stock dividends															$ 0	$ 0	(8)	$ 0	$ 0	0	(8)
401(k) Plan (in shares)															0	390,389		0	0
401(k) Plan															$ 0	$ 6	0	$ 0	$ 0	0	6
Restricted stock awards (in shares)	233,425	296,042		(110,412)	(239,597)			0	60,050		0	(18,275)
Restricted stock awards	$ 0	$ 0	$ 0	$ (2)	$ (4)	$ 0	$ (6)	$ 0	$ 0	$ 0	$ 0	$ (1)	$ 0	$ (1)
Stock-based compensation															$ 1	$ 3	0	$ 0	$ 0	0	4
Balance (in shares) at Mar. 31, 2021															9,169,198	103,847,337		(1,998,179)	(15,218,469)
Balance at Mar. 31, 2021															$ 35	$ 1,119	880	$ (28)	$ (193)	(39)	1,774
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	62	0	0	0	62
Preferred stock dividends															0	0	(13)	0	0	0	(13)
Common stock dividends															$ 0	$ 0	(8)	$ 0	$ 0	0	(8)
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	333,382		(103,738)	(138,959)										0	108,921		0	(32,958)
Restricted stock awards	$ 0	$ 0	$ 0	$ (2)	$ (3)	$ 0	$ (5)								$ 0	$ 0	0	$ 0	$ (1)	0	(1)
Stock-based compensation															$ 2	$ 3	0	$ 0	$ 0	0	5
Balance (in shares) at Mar. 31, 2022															9,675,139	105,036,512		(2,101,917)	(16,919,185)
Balance at Mar. 31, 2022															$ 41	$ 1,137	$ 910	$ (30)	$ (227)	$ (27)	$ 1,804