Derivative and Other Hedging Financial Instruments - Additional Information (Detail) In Millions, unless otherwise specified	3 Months Ended				3 Months Ended
	Mar. 31, 2015 USD ($)	Mar. 31, 2015 3 3/4% Senior Notes Due in October 2021 Euro-Denominated EUR (€)	Mar. 31, 2015 Net Investment Hedging 3 3/4% Senior Notes Due in October 2021 USD ($)	Mar. 31, 2015 Interest Rate Swap Fair value derivatives USD ($)	Mar. 31, 2015 Swap Cash flow derivatives USD ($)	Mar. 31, 2015 Forward-Starting Swaps Cash flow derivatives Effective Commencing December Thirty First Two Thousand And Fifteen USD ($)	Mar. 31, 2015 Foreign Exchange Contract Cash flow derivatives USD ($)	Mar. 31, 2015 Foreign Exchange Contract Cash flow derivatives Derivatives that are not designated as effective hedges USD ($)	Mar. 31, 2015 Commodity Contract Derivatives that are not designated as effective hedges USD ($)
Derivative [Line Items]
Notional amount				$ 650	$ 850	$ 350	$ 436	$ 370	$ 52
Derivative weighted average basis spread on variable rate				6.05%
Effective date of swap agreement						December 31, 2015
Derivative maturity date					June 2020		December 2016	September 2016	December 2016
Weighted average fixed rate of interest swaps					1.30%
Deferred net gains within AOCI expected to be reclassified to earnings over the next twelve months	27
Debt instrument, principal balance designated as investment hedge		300
Interest rate of debt instrument		3.75%
Senior notes, maturity period		2021-10
Deferred gain (loss) on net investment hedge recorded in AOCI, net of tax			$ 51.4