CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
NET INCOME	$ 172.1	$ 126.4	$ 465.0	$ 186.4
Other comprehensive income (loss), net of taxes:
Foreign currency translation adjustment	(11.5)	6.0	(6.7)	(24.4)
Net unrealized gain (loss) on interest rate risk management activities, net of tax:
Unrealized gain (loss) arising during the period, net of tax benefit (provision) of $0.2, $0.6, $(4.9) and $12.6, respectively	(0.6)	(1.8)	16.1	(40.4)
Reclassification related to de-designated interest rate swaps, net of tax benefit of $—, $—, $0.7 and $—, respectively	0.0	0.0	2.4	0.0
Unrealized gain (loss) on interest rate risk management activities, net of tax	1.3	1.0	24.5	(35.0)
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX	(10.2)	7.0	17.9	(59.3)
COMPREHENSIVE INCOME	161.9	133.4	482.9	127.0
SG&A
Net unrealized gain (loss) on interest rate risk management activities, net of tax:
Reclassification adjustment for gain (loss), net of tax	0.0	0.1	0.0	0.1
Interest Expense
Net unrealized gain (loss) on interest rate risk management activities, net of tax:
Reclassification adjustment for gain (loss), net of tax	$ 1.8	$ 2.7	$ 6.1	$ 5.4