Earnings Per Share - Schedule of Computation of Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Basic:
Net income	$ 296	$ 463	$ 837
Weighted-average shares outstanding (in shares)	51,378,051	52,207,903	53,446,399
Basic earnings per share (in USD per share)	$ 5.75	$ 8.86	$ 15.66
Diluted:
Net income	$ 296	$ 463	$ 837
Weighted-average shares outstanding (in shares)	51,378,051	52,207,903	53,446,399
Diluted Shares (in shares)	332,911	350,809	456,031
Diluted weighted-average shares outstanding (in shares)	51,710,962	52,558,712	53,902,430
Diluted earnings per share (in USD per share)	$ 5.72	$ 8.80	$ 15.52