Derivative Instruments - Quantitative Disclosures of Derivative Instruments (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Derivative Instruments And Hedging Activities Disclosure [Line Items]
Gain (loss) reclassified from AOCI into Earnings			$ (46.6)	$ (4.2)
Gain (Loss) Recognized in Other operating expenses (income), net	$ (26.6)		(41.6)
Interest Rate Swaps [Member]
Derivative Instruments And Hedging Activities Disclosure [Line Items]
Gain (Loss) Recognized in Other operating expenses (income), net, Ineffectiveness of cash flow hedges			(1.6)
Derivatives Not Designated as Hedging Instruments [Member] | Interest Rate Swaps [Member]
Derivative Instruments And Hedging Activities Disclosure [Line Items]
Gain (Loss) Recognized in Other operating expenses (income), net	(3.9)		(12.4)
Derivatives Not Designated as Hedging Instruments [Member] | Forward Currency Contracts [Member]
Derivative Instruments And Hedging Activities Disclosure [Line Items]
Gain (Loss) Recognized in Other operating expenses (income), net	0.7		2.8
Derivatives Designated as Cash Flow Hedges [Member] | Interest Rate Swaps [Member]
Derivative Instruments And Hedging Activities Disclosure [Line Items]
Gain (loss) recognized in other comprehensive income (loss)	(2.9)	$ (51.6)	(85.9)	(107.0)
Derivatives Designated as Cash Flow Hedges [Member] | Interest Rate Swaps [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Other Operating Income (Expense) Net [Member]
Derivative Instruments And Hedging Activities Disclosure [Line Items]
Gain (loss) reclassified from AOCI into Earnings	(22.7)		(27.6)
Derivatives Designated as Cash Flow Hedges [Member] | Forward Currency Contracts [Member]
Derivative Instruments And Hedging Activities Disclosure [Line Items]
Gain (loss) recognized in other comprehensive income (loss)	(4.2)		5.5
Derivatives Designated as Cash Flow Hedges [Member] | Forward Currency Contracts [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Cost of Sales [Member]
Derivative Instruments And Hedging Activities Disclosure [Line Items]
Gain (loss) reclassified from AOCI into Earnings	3.5		6.3
Derivatives Designated as Cash Flow Hedges [Member] | Interest Rate Caps [Member]
Derivative Instruments And Hedging Activities Disclosure [Line Items]
Gain (loss) recognized in other comprehensive income (loss)		(1.8)		(2.3)
Derivatives Designated as Cash Flow Hedges [Member] | Interest Rate Caps [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Interest Expense, Net [Member]
Derivative Instruments And Hedging Activities Disclosure [Line Items]
Gain (loss) reclassified from AOCI into Earnings	(5.0)	(2.2)	(5.0)	(4.2)
Derivatives Designated as Net Investment Hedges [Member] | Cross-Currency Rate Swaps [Member]
Derivative Instruments And Hedging Activities Disclosure [Line Items]
Gain (loss) recognized in other comprehensive income (loss)	$ (185.3)	$ 2.1	$ 269.0	$ 1.7