Shareholders' Equity - Components of Accumulated Other Comprehensive Loss, Net of Tax (Parenthetical) (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Translation loss on derivative instruments, net of income tax benefit of $(9.8) and $(16.4), respectively
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, income taxes	$ (9.8)	$ (16.4)
Defined benefit pension plans and Retiree health care plan | Defined benefit pension plans, net of income tax benefit of $(22.7) and $(22.8), respectively
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, income taxes	(22.7)	(22.8)
Defined benefit pension plans and Retiree health care plan | Retiree health care plan, net of income taxes of $1.6 on both dates
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, income taxes	$ 1.6	$ 1.6