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	1,556				1,556
Other comprehensive income (loss), net of tax	(24)					(24)
Exercise of stock options and vesting of restricted stock units and performance share units (in shares)		234
Exercise of stock options and vesting of restricted stock units and performance share units	109	$ 0		109
Stock-based compensation	$ 248			248
Repurchase of common stock (in shares)	(2,056)		(2,056)
Repurchase of common stock	$ (5,336)		$ (5,336)
Balance (in shares) at Jun. 30, 2023		64,015	(27,974)
Balance at Jun. 30, 2023	(665)	$ 0	$ (36,319)	6,848	29,097	(291)
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)
Increase (Decrease) in Stockholders' Equity
Net income	1,290				1,290
Other comprehensive income (loss), net of tax	(24)					(24)
Exercise of stock options and vesting of restricted stock units and performance share units (in shares)		7
Exercise of stock options and vesting of restricted stock units and performance share units	4	$ 0		4
Stock-based compensation	$ 132			132
Repurchase of common stock (in shares)	(1,178)		(1,178)
Repurchase of common stock	$ (3,141)		$ (3,141)
Balance (in shares) at Jun. 30, 2023		64,015	(27,974)
Balance at Jun. 30, 2023	(665)	$ 0	$ (36,319)	6,848	29,097	(291)
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	2,297				2,297
Other comprehensive income (loss), net of tax	(1)					(1)
Exercise of stock options and vesting of restricted stock units and performance share units (in shares)		211
Exercise of stock options and vesting of restricted stock units and performance share units	9	$ 0		9
Stock-based compensation	$ 295			295
Repurchase of common stock (in shares)	(973)		(973)
Repurchase of common stock	$ (3,532)		$ (3,532)
Dividends	(600)				(600)
Balance (in shares) at Jun. 30, 2024		64,259	(30,623)
Balance at Jun. 30, 2024	(4,276)	$ 0	$ (44,958)	7,479	33,527	(324)
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)
Increase (Decrease) in Stockholders' Equity
Net income	1,521				1,521
Other comprehensive income (loss), net of tax	32					32
Exercise of stock options and vesting of restricted stock units and performance share units (in shares)		7
Exercise of stock options and vesting of restricted stock units and performance share units	3	$ 0		3
Stock-based compensation	$ 146			146
Repurchase of common stock (in shares)	(437)		(437)
Repurchase of common stock	$ (1,628)		$ (1,628)
Dividends	(298)				(298)
Balance (in shares) at Jun. 30, 2024		64,259	(30,623)
Balance at Jun. 30, 2024	$ (4,276)	$ 0	$ (44,958)	$ 7,479	$ 33,527	$ (324)