Unaudited Condensed Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Share Amount
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total stockholders’ equity	$ 4,057	$ 1	$ 1,104	$ 3,802	$ (850)
Shares outstanding, beginning balance (in shares) at Dec. 31, 2022		69,266
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued / (surrendered) under incentive compensation plan (in shares)		870
Shares issued / (surrendered) under incentive compensation plan	(24)		(43)		19
Share-based compensation	5		5
Repurchase of common stock (in shares)		(2,083)
Repurchase of common stock	(89)				(89)
Net income	37			37
Shares outstanding, ending balance (in shares) at Mar. 31, 2023		68,053
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total stockholders’ equity	3,986	$ 1	1,066	3,839	(920)
Total stockholders’ equity	4,282	$ 1	1,087	4,302	(1,108)
Shares outstanding, beginning balance (in shares) at Dec. 31, 2023		64,599
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued / (surrendered) under incentive compensation plan (in shares)		657
Shares issued / (surrendered) under incentive compensation plan	(27)		(44)		17
Share-based compensation	8		8
Repurchase of common stock (in shares)		(537)
Repurchase of common stock	(39)				(39)
Net income	181			181
Shares outstanding, ending balance (in shares) at Mar. 31, 2024		64,719
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total stockholders’ equity	$ 4,405	$ 1	$ 1,051	$ 4,483	$ (1,130)