Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 762.1	$ 653.1
Other comprehensive (loss) income:
Unrealized holding losses on marketable securities, net	(2.3)	(0.2)
Unrealized gains on foreign currency forward contracts, net of tax of $(2.2) million and $(9.3) million, respectively	10.1	34.0
Foreign currency translation adjustment	(12.4)	1.4
Total other comprehensive (loss) income	(4.6)	35.2
Comprehensive income	$ 757.5	$ 688.3