UNAUDITED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Millions	Total	Common Stock	Treasury Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Balance (in shares) at Dec. 31, 2022		63,781	(25,918)
Balance at Dec. 31, 2022	$ 2,782	$ 0	$ (30,983)	$ 6,491	$ 27,541	$ (267)
Increase (Decrease) in Stockholders' Equity
Net income	266				266
Other comprehensive loss, net of tax	0
Exercise of stock options and vesting of restricted stock units and performance share units (in shares)		227
Exercise of stock options and vesting of restricted stock units and performance share units	105	$ 0		105
Stock-based compensation	$ 116			116
Repurchase of common stock (in shares)	(878)		(878)
Repurchase of common stock	$ (2,195)		$ (2,195)
Balance (in shares) at Mar. 31, 2023		64,008	(26,796)
Balance at Mar. 31, 2023	1,074	$ 0	$ (33,178)	6,712	27,807	(267)
Balance (in shares) at Dec. 31, 2023		64,048	(29,650)
Balance at Dec. 31, 2023	(2,744)	$ 0	$ (41,426)	7,175	31,830	(323)
Increase (Decrease) in Stockholders' Equity
Net income	776				776
Other comprehensive loss, net of tax	(33)					(33)
Exercise of stock options and vesting of restricted stock units and performance share units (in shares)		204
Exercise of stock options and vesting of restricted stock units and performance share units	6	$ 0		6
Stock-based compensation	$ 149			149
Repurchase of common stock (in shares)	(536)		(536)
Repurchase of common stock	$ (1,904)		$ (1,904)
Dividends	(302)				(302)
Balance (in shares) at Mar. 31, 2024		64,252	(30,186)
Balance at Mar. 31, 2024	$ (4,052)	$ 0	$ (43,330)	$ 7,330	$ 32,304	$ (356)