Unaudited Condensed Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Millions	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Shares
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)		877
Shares issued / (surrendered) under incentive compensation plan	(24)		(43)		19
Share-based compensation	13		13
Repurchase of common stock (in shares)		(3,295)
Repurchase of common stock	(146)				(146)
Net income	179			179
Shares outstanding, ending balance (in shares) at Jun. 30, 2023		66,848
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total stockholders’ equity	3,986	$ 1	1,066	3,839	(920)
Shares outstanding, beginning balance (in shares) at Mar. 31, 2023		68,053
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued / (surrendered) under incentive compensation plan (in shares)		7
Shares issued / (surrendered) under incentive compensation plan	0		0		0
Share-based compensation	8		8
Repurchase of common stock (in shares)		(1,212)
Repurchase of common stock	(57)				(57)
Net income	142			142
Shares outstanding, ending balance (in shares) at Jun. 30, 2023		66,848
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total stockholders’ equity	4,079	$ 1	1,074	3,981	(977)
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)		720
Shares issued / (surrendered) under incentive compensation plan	(27)		(46)		19
Share-based compensation	17		17
Repurchase of common stock (in shares)		(835)
Repurchase of common stock	(63)				(63)
Net income	385			385
Shares outstanding, ending balance (in shares) at Jun. 30, 2024		64,484
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total stockholders’ equity	4,405	$ 1	1,051	4,483	(1,130)
Shares outstanding, beginning balance (in shares) at Mar. 31, 2024		64,719
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued / (surrendered) under incentive compensation plan (in shares)		63
Shares issued / (surrendered) under incentive compensation plan	0		(2)		2
Share-based compensation	9		9
Repurchase of common stock (in shares)		(298)
Repurchase of common stock	(24)				(24)
Net income	204			204
Shares outstanding, ending balance (in shares) at Jun. 30, 2024		64,484
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total stockholders’ equity	$ 4,594	$ 1	$ 1,058	$ 4,687	$ (1,152)