Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 810.5	$ 67.0	$ 1,572.6	$ 720.1
Other comprehensive income:
Unrealized holding losses on marketable securities, net	(0.7)	(0.1)	(3.0)	(0.3)
Unrealized gains on foreign currency forward contracts, net of tax of $(16.1), $(2.3), $(18.3) and $(11.6), respectively	59.2	8.3	69.3	42.3
Foreign currency translation adjustment	(12.3)	(0.1)	(24.7)	1.3
Total other comprehensive income	46.2	8.1	41.6	43.3
Comprehensive income	$ 856.7	$ 75.1	$ 1,614.2	$ 763.4