Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss,Net of Tax (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated other comprehensive loss	$ 2,761.5	$ 2,698.5	$ 2,857.6	$ 2,446.4
Foreign currency translation
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated other comprehensive loss	(260.5)	(223.2)
Translation gain (loss) on derivative instruments, net of income taxes of $(9.1) and $(12.9), respectively
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated other comprehensive loss	13.1	(4.7)
Translation loss on long-term intercompany loans
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated other comprehensive loss	(121.5)	(137.2)
Defined benefit pension plans and Retiree health care plan | Defined benefit pension plans, net of income taxes of $(30.9) and $(23.2), respectively
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated other comprehensive loss	(74.1)	(37.9)
Defined benefit pension plans and Retiree health care plan | Retiree health care plan, net of income taxes of $1.6 and $2.0, respectively
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated other comprehensive loss	2.0	3.2
Accumulated other comprehensive loss
Accumulated Other Comprehensive Income Loss [Line Items]
Accumulated other comprehensive loss	$ (441.0)	$ (399.8)	$ (288.2)	$ (426.1)