CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
NET INCOME	$ 191.0	$ 30.2	$ 292.9	$ 60.0
Other comprehensive income (loss), net of taxes:
Foreign currency translation adjustment	7.2	(2.5)	4.9	(30.4)
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 $3.4, $1.5, $(5.1) and $11.2, respectively	(11.1)	(7.0)	16.7	(38.6)
Reclassification adjustment for loss included in interest expense, net of tax benefit of $0.6, $0.7, $1.3 and $0.9, respectively	1.9	2.1	4.2	2.7
Reclassification related to de-designated interest rate swaps net of tax benefit of $0.7, $—, $0.7 and $—, respectively	2.4	0.0	2.4	0.0
Unrealized gain (loss) on interest rate risk management activities, net of tax	(6.9)	(4.9)	23.3	(36.0)
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX	0.3	(7.3)	28.1	(66.4)
COMPREHENSIVE INCOME (LOSS)	$ 191.2	$ 22.8	$ 321.0	$ (6.4)