Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Millions		Total	Common Stock		Additional Paid-In Capital		Retained Earnings	Accumulated Other Comprehensive Loss
Beginning balance (in shares) at Dec. 31, 2023	[1]		1,249,000,000
Beginning balance at Dec. 31, 2023		$ 7,219.1	$ 0.1	[1]	$ 2,108.3	[1]	$ 5,114.0	$ (3.3)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		637.7					637.7
Other comprehensive income (loss), net of tax		(8.6)						(8.6)
Stock-based compensation		77.2			77.2	[1]
Issuance of common stock in connection with employee equity incentive plans (in shares)	[1]		6,700,000
Issuance of common stock in connection with employee equity incentive plans		25.1			25.1	[1]
Repurchase of common stock (in shares)	[1]		(900,000)
Repurchase of common stock		(62.7)					(62.7)
Tax withholding paid for net share settlement of equity awards (in shares)	[1]		(400,000)
Tax withholding paid for net share settlement of equity awards		(25.5)			(25.5)	[1]
Ending balance (in shares) at Mar. 31, 2024	[1]		1,254,400,000
Ending balance at Mar. 31, 2024		$ 7,862.3	$ 0.1	[1]	2,185.1	[1]	5,689.0	(11.9)
Beginning balance (in shares) at Dec. 31, 2024		1,261,300,000	1,261,300,000
Beginning balance at Dec. 31, 2024		$ 9,994.8	$ 0.1		2,465.4		7,542.5	(13.2)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		813.8					813.8
Other comprehensive income (loss), net of tax		11.3						11.3
Stock-based compensation		93.0			93.0
Issuance of common stock in connection with employee equity incentive plans (in shares)			4,300,000
Issuance of common stock in connection with employee equity incentive plans		$ 28.1			28.1
Repurchase of common stock (in shares)		(8,700,000)	(8,700,000)
Repurchase of common stock		$ (787.1)					(787.1)
Tax withholding paid for net share settlement of equity awards (in shares)			(300,000)
Tax withholding paid for net share settlement of equity awards		$ (34.8)			(34.8)
Ending balance (in shares) at Mar. 31, 2025		1,256,600,000	1,256,600,000
Ending balance at Mar. 31, 2025		$ 10,119.1	$ 0.1		$ 2,551.7		$ 7,569.2	$ (1.9)

[1] Prior period results have been adjusted to reflect the four-for-one stock split effected in December 2024. See Note 1, Organization and Summary of Accounting Policies, for details.