Derivatives - Schedule of Fair Value of Derivative Financial Instruments (Detail) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Derivatives, Fair Value [Line Items]
Fair Value of Derivatives, Asset	$ 38.5	$ 33.3
Fair Value of Derivatives, Liability	101.6	36.8
Derivatives Designated as Effective Hedges [Member] | Cash Flow Hedges [Member] | Cross-currency Swaps [Member]
Derivatives, Fair Value [Line Items]
Fair Value of Derivatives, Asset		0.7
Fair Value of Derivatives, Liability	17.2	16.3
Derivatives Designated as Effective Hedges [Member] | Cash Flow Hedges [Member] | Foreign Currency Contracts [Member]
Derivatives, Fair Value [Line Items]
Fair Value of Derivatives, Asset	2.4	14.2
Fair Value of Derivatives, Liability	14.6	3.4
Derivatives Designated as Effective Hedges [Member] | Fair Value Hedges [Member] | Interest Rate Swaps [Member]
Derivatives, Fair Value [Line Items]
Fair Value of Derivatives, Asset	0.9
Fair Value of Derivatives, Liability	4.5	5.9
Derivatives Not Designated as Effective Hedges [Member] | Foreign Currency Contracts [Member]
Derivatives, Fair Value [Line Items]
Fair Value of Derivatives, Asset	35.1	18.2
Fair Value of Derivatives, Liability	65.3	10.9
Derivatives Not Designated as Effective Hedges [Member] | Commodity Contracts [Member]
Derivatives, Fair Value [Line Items]
Fair Value of Derivatives, Asset	$ 0.1	0.2
Fair Value of Derivatives, Liability		$ 0.3