CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (DEFICIT) - USD ($) $ in Millions	Total	Treasury Stock	Paid-in- Capital	Retained Earnings (Deficit)	Accumulated Other Comprehensive Income (Loss)	Common Class A	Common Class A Common Stock	Common Class B	Common Class B Common Stock
Beginning balance (in shares) at Dec. 31, 2018							34,570,000		0
Beginning balance at Dec. 31, 2018	$ 906	$ (2)	$ 686	$ 102	$ 120		$ 0		$ 0
Treasury shares, beginning balance (in shares) at Dec. 31, 2018		86,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	70			70
Other comprehensive income (loss), net	2				2
Treasury shares (in shares)		159,000
Treasury shares	(3)	$ (3)
Common stock issued for restricted stock (in shares)							379,000
Common stock issued for restricted stock	0
Equity award expense	12		12
Ending balance (in shares) at Dec. 31, 2019							34,949,000		0
Ending balance at Dec. 31, 2019	987	$ (5)	698	172	122		$ 0		$ 0
Treasury shares, ending balance (in shares) at Dec. 31, 2019		245,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(101)			(101)
Other comprehensive income (loss), net	(62)				(62)
Treasury shares (in shares)		2,499,000
Treasury shares	(34)	$ (34)
Common stock issued for restricted stock (in shares)							929,000
Common stock issued for restricted stock	0
Dividends and dividend equivalents declared	(111)		2	(113)
Equity award expense	5		5
Ending balance (in shares) at Dec. 31, 2020						35,877,533	35,878,000	0	0
Ending balance at Dec. 31, 2020	$ 684	$ (39)	705	(42)	60		$ 0		$ 0
Treasury shares, ending balance (in shares) at Dec. 31, 2020	2,743,884	2,744,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ (3)			(3)
Other comprehensive income (loss), net	114				114
Treasury shares (in shares)		1,486,000
Treasury shares	(24)	$ (24)
Common stock issued for restricted stock (in shares)							536,000
Common stock issued for restricted stock	1		1
Dividends and dividend equivalents declared	(12)			(12)
Repurchase of common stock (in shares)							(3,040,000)
Repurchase of common stock	(56)		(56)
Repurchase of warrants	(10)		(10)
Equity award expense	5		5
Ending balance (in shares) at Dec. 31, 2021						33,374,336	33,374,000	0	0
Ending balance at Dec. 31, 2021	$ 699	$ (63)	$ 645	$ (57)	$ 174		$ 0		$ 0
Treasury shares, ending balance (in shares) at Dec. 31, 2021	4,229,829	4,230,000