Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014		Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives assets	$ 12.2	[1]	$ 19.5	[1]
Derivatives liabilities	(19.2)	[1]	(19.7)	[1]
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives assets	12.2		19.5
Derivatives liabilities	(19.2)		(19.7)
Available-for-sale securities	11.7		12.0
Contingent consideration	41.5		43.0
Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives assets	12.2		19.5
Derivatives liabilities	(19.2)		(19.7)
Available-for-sale securities	11.7		12.0
Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	$ 41.5		$ 43.0

[1] Consolidated balance sheet location: Asset: Other current and non-current assets Liability: Other current and non-current liabilities