Financial Instruments and Fair Value Measurements - Derivative Activity (Detail) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014 USD ($) Contract	Mar. 31, 2014 EUR (€)	Mar. 31, 2014 Foreign Currency Contracts [Member] USD ($)	Mar. 31, 2013 Foreign Currency Forwards [Member] USD ($)	Mar. 31, 2014 Interest Rate Swaps [Member] USD ($)	Mar. 31, 2013 Interest Rate Swaps [Member] USD ($)
Derivative [Line Items]
Notional amounts at January 1,			$ 1,050.0	$ 1,303.8	$ 71.0	$ 1,314.8
New contracts			1,040.0
Matured or expired contracts			(470.0)	(663.7)		(1,230.2)
Notional amounts at March 31,	$ 1,400.0	€ 1,000.0	$ 1,620.0	$ 640.1	$ 71.0	$ 84.6
Number of interest rate swaps	1	1
Swap contract maturity date	2017-05	2017-05