Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 699.8	$ 762.1
Other comprehensive income:
Unrealized holding gains (losses) on marketable securities, net of tax of $(0.8) and zero, respectively	2.9	(2.3)
Unrealized (losses) gains on foreign currency forward contracts, net of tax of $7.4 and $(2.2), respectively	(26.8)	10.1
Foreign currency translation adjustment	10.0	(12.4)
Total other comprehensive loss	(13.9)	(4.6)
Comprehensive income	$ 685.9	$ 757.5