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Derivatives - Schedule of Fair Value of Derivative Financial Instruments (Detail) - USD ($)
$ in Millions
Mar. 31, 2019
Dec. 31, 2018
Derivatives, Fair Value [Line Items]    
Fair Value of Derivatives, Asset $ 16.5 $ 26.2
Fair Value of Derivatives, Liability 19.1 17.3
Derivatives Designated as Effective Hedges [Member] | Cash Flow Hedges [Member] | Foreign Currency Contracts [Member]    
Derivatives, Fair Value [Line Items]    
Fair Value of Derivatives, Asset 7.9 13.3
Fair Value of Derivatives, Liability 3.6 0.7
Derivatives Designated as Effective Hedges [Member] | Fair Value Hedges [Member] | Interest Rate Swaps [Member]    
Derivatives, Fair Value [Line Items]    
Fair Value of Derivatives, Liability 6.0 11.5
Derivatives Not Designated as Effective Hedges [Member] | Foreign Currency Contracts [Member]    
Derivatives, Fair Value [Line Items]    
Fair Value of Derivatives, Asset 8.6 12.9
Fair Value of Derivatives, Liability 8.2 4.2
Derivatives Not Designated as Effective Hedges [Member] | Commodity Contracts [Member]    
Derivatives, Fair Value [Line Items]    
Fair Value of Derivatives, Liability $ 1.3 $ 0.9