Condensed Consolidated Statements of Stockholders' Equity (Deficit) - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit
Balance, shares at Dec. 31, 2024		767.0
Balance, beginning of period at Dec. 31, 2024	$ 1,493.8	$ 0.8	$ 1,636.2	$ (26.1)	$ (117.1)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock in connection with equity incentive plans - net of tax withholding (in shares)		2.2
Issuance of common stock in connection with equity incentive plans - net of tax withholding	(33.6)		(33.6)
Stock-based compensation expense	66.1		66.1
Net unrealized loss on investments - net of tax	(0.2)			(0.2)
Foreign currency translation adjustment	3.4			3.4
Net income	433.4				433.4
Balance, shares at Mar. 31, 2025		769.2
Balance, end of period at Mar. 31, 2025	1,962.9	$ 0.8	1,668.7	(22.9)	316.3
Balance, shares at Dec. 31, 2025		743.0
Balance, beginning of period at Dec. 31, 2025	1,237.5	$ 0.7	1,770.1	(25.4)	(507.9)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock in connection with equity incentive plans - net of tax withholding (in shares)		1.6
Issuance of common stock in connection with equity incentive plans - net of tax withholding	(18.6)		(18.6)
Repurchase and retirement of common stock (in shares)		(10.6)
Repurchase and retirement of common stock	(826.9)		(18.3)		(808.6)
Excise tax on net stock repurchases	(7.0)		(7.0)
Stock-based compensation expense	72.5		72.5
Net unrealized loss on investments - net of tax	(2.3)			(2.3)
Net income	534.5				534.5
Balance, shares at Mar. 31, 2026		734.0
Balance, end of period at Mar. 31, 2026	$ 989.7	$ 0.7	$ 1,798.7	$ (27.7)	$ (782.0)