CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 1.2	$ 1.4	$ 9.8	$ 25.3
Foreign currency translation:
Other comprehensive income (loss) before reclassifications	12.9	(0.1)	(10.7)	94.1
Reclassifications	0.0	0.0	0.0	479.8
Total foreign currency translation adjustments	12.9	(0.1)	(10.7)	573.9
Pension and post-retirement plans:
Other comprehensive (loss) income before reclassifications, net of tax expense (benefit) of $0.0 for the three months ended June 30, 2020 and 2019, and $0.5 and $0.0 for the six months ended June 30, 2020 and 2019, respectively	0.0	0.0	(0.5)	0.0
Reclassifications, net of tax expense (benefit) of $0.0 for the three and six months ended June 30, 2020 and 2019, respectively	0.0	0.0	0.0	(2.1)
Total pension and post-retirement plans	0.0	0.0	(0.5)	(2.1)
Derivative financial instruments:
Other comprehensive (loss) income before reclassifications, net of tax expense (benefit) of $0.0 and $2.4 for the three months ended June 30, 2020 and 2019, and $0.0 for the six months ended June 30, 2020 and 2019, respectively	(5.4)	(18.5)	(37.4)	(27.7)
Reclassifications, net of tax expense (benefit) of $0.0 for the three months ended June 30, 2020 and 2019, and $0.0 and $1.4 for the six months ended June 30, 2020 and 2019, respectively	3.7	0.3	5.3	(5.4)
Total unrealized loss arising on qualified hedging derivatives	(1.7)	(18.2)	(32.1)	(33.1)
Other comprehensive income (loss)	11.2	(18.3)	(43.3)	538.7
Comprehensive income (loss)	12.4	(16.9)	(33.5)	564.0
Comprehensive income attributable to the non-controlling interests	0.0	0.0	0.0	(40.2)
Comprehensive income (loss) attributable to common stockholders	12.4	(16.9)	(33.5)	523.8
Tax expense, reclassification	$ 0.0	$ 0.0	$ 0.0	$ 1.4