Condensed Consolidated Statements of Stockholders' Equity (Deficit) - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Non-Controlling Interests
Balance, shares at Dec. 31, 2021		810.0
Balance, beginning of period at Dec. 31, 2021	$ 798.4	$ 0.8	$ 1,253.6	$ (4.8)	$ (467.9)	$ 16.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock in connection with equity incentive plans - net of tax withholding (in shares)		2.7
Issuance of common stock in connection with equity incentive plans - net of tax withholding	(53.8)		(53.8)
Repurchase and retirement of common stock (in shares)		(11.4)
Repurchase and retirement of common stock	(691.2)		(17.3)		(673.9)
Stock-based compensation expense	53.2		53.2
Net unrealized gain on investments - net of tax	(7.2)			(7.2)
Foreign currency translation adjustment	(4.5)			(3.4)		(1.1)
Net income including non-controlling interests	138.3				138.4	(0.1)
Balance, shares at Mar. 31, 2022		801.3
Balance, end of period at Mar. 31, 2022	233.2	$ 0.8	1,235.7	(15.4)	(1,003.4)	15.5
Balance, shares at Dec. 31, 2022		781.5
Balance, beginning of period at Dec. 31, 2022	(281.6)	$ 0.8	1,284.2	(20.2)	(1,546.4)	0.0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock in connection with equity incentive plans - net of tax withholding (in shares)		2.9
Issuance of common stock in connection with equity incentive plans - net of tax withholding	(13.1)		(13.1)
Stock-based compensation expense	56.3		56.3
Net unrealized gain on investments - net of tax	2.9			2.9
Foreign currency translation adjustment	(0.8)			(0.8)		0.0
Net income including non-controlling interests	247.7				247.7	0.0
Balance, shares at Mar. 31, 2023		784.4
Balance, end of period at Mar. 31, 2023	$ 11.4	$ 0.8	$ 1,327.4	$ (18.1)	$ (1,298.7)	$ 0.0