Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 915.7	$ 810.5	$ 1,615.5	$ 1,572.6
Other comprehensive (loss) income:
Unrealized holding losses on marketable securities, net of tax of $4.3, zero, $3.5 and zero, respectively	(15.5)	(0.7)	(12.6)	(3.0)
Unrealized (losses) gains on foreign currency forward contracts, net of tax of $4.2, $(16.1), $11.6 and $(18.3), respectively	(15.3)	59.2	(42.1)	69.3
Foreign currency translation adjustment	4.1	(12.3)	14.1	(24.7)
Total other comprehensive (loss) income	(26.7)	46.2	(40.6)	41.6
Comprehensive income	$ 889.0	$ 856.7	$ 1,574.9	$ 1,614.2