Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance, Foreign Currency Translation Gain (Loss)	$ (88.7)	$ (107.7)	$ (68.1)
Change in Foreign Currency Translation Gain (Loss)	19.7	19.0	(39.6)
Foreign currency translation gain loss before reclassification adjustment into earnings	0.0	0.0	0.0
Foreign Currency Translation Gain (Loss), Income tax effect	0.0	0.0	0.0
Ending Balance, Foreign Currency Translation Gain (Loss)	(69.0)	(88.7)	(107.7)
Change in Unrealized Loss on Derivative Instruments	(10.6)	(8.9)	3.9
Unrealized Loss on Derivative Instruments, Reclassification adjustments into earnings	11.0	4.8	(4.9)
Unrealized Loss on Derivative Instruments, Income tax effect	(0.1)	0.8	0.3
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	(13.8)	(14.1)	(10.8)	$ (10.1)
Beginning Balance, Post-Retirement Benefit Plans	(79.7)	(83.2)	(85.4)
Change in Post-Retirement Benefit Plans	0.1	1.2	(0.2)
Post-Retirement Benefit Plans, Reclassification adjustments into earnings	3.0	3.0	3.1
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, before Tax	14.0	7.8	(1.8)
Post-Retirement Benefit Plans, Income tax effect	(0.8)	(0.7)	(0.7)
Ending Balance, Post-Retirement Benefit Plans	(77.4)	(79.7)	(83.2)
Other Comprehensive Income Change in Component	9.2	11.3	(35.9)
Income tax effect, Total	(0.9)	0.1	(0.4)
Accumulated other comprehensive income (loss), net of tax	$ (160.2)	$ (182.5)	$ (201.7)	$ (163.6)