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Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Loss, Net of Tax (Parenthetical) (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
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Translation (loss) gain on derivative instruments, net of income taxes of $(34.9) and $(9.1), respectively |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |
Accumulated other comprehensive loss, income taxes | $ (34.9) | $ (9.1)
Defined benefit pension plans and Retiree health care plan | Defined benefit pension plans, net of income taxes of $(37.9) and $(30.9), respectively |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |
Accumulated other comprehensive loss, income taxes | (38.2) | (30.9)
Defined benefit pension plans and Retiree health care plan | Retiree health care plan, net of income taxes of $0.7 and $1.6, respectively |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |
Accumulated other comprehensive loss, income taxes | $ 1.8 | $ 1.6

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- Definition Amount of tax expense (benefit) allocated to accumulated other comprehensive income (loss) including portion attributable to noncontrolling interest. + References No definition available. + Details
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