CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 235.5	$ 220.3
Foreign currency translation	47.1	(2.1)
Unrealized gain (loss) on available-for-sale debt securities, net of tax	0.3	(0.9)
Comprehensive income	$ 282.9	$ 217.3