Net Income Per Share - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	May 01, 2013	Apr. 30, 2013
Schedule Of Earnings Per Share [Line Items]
Common stock, shares outstanding	46,292,043		46,292,043
Par value of common stock issued	$ 0.01		$ 0.01			$ 0.01
Exercise price of common stock					$ 16.67
Warrants outstanding	4,877,617		4,877,617
Earnings Per Share, Basic	$ 0.35	$ (2.33)	$ (0.19)	$ (9.16)
Earnings Per Share, Diluted	$ 0.35	$ (2.33)	$ (0.19)	$ (9.16)
Noncontrolling Interest, Change in Redemption Value	$ 0		$ (14)
Net Income (Loss) Available to Common Stockholders, Basic	$ 17	$ (108)	$ (9)	$ (423)
Common Stock [Member]
Schedule Of Earnings Per Share [Line Items]
Number of new common stock issued			482,904