Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014		Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives assets	$ 6.9	[1]	$ 19.5	[1]
Derivatives liabilities	(19.8)	[1]	(19.7)	[1]
Contingent consideration	34.7		43.0
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives assets	6.9		19.5
Derivatives liabilities	(19.8)		(19.7)
Available-for-sale securities	16.4		12.0
Contingent consideration	34.7		43.0
Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives assets	6.9		19.5
Derivatives liabilities	(19.8)		(19.7)
Available-for-sale securities	16.4		12.0
Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	$ 34.7		$ 43.0

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