Derivative Instruments and Hedging Activities - Additional Information (Detail) - USD ($)	1 Months Ended	3 Months Ended		6 Months Ended
	Mar. 31, 2015	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Derivative Instruments, Gain (Loss) [Line Items]
Derivative notional amount, Total	$ 1,000,000,000
Loss on settlement of forward starting interest rate swaps	$ 97,600,000
Expected months of hedging of inter company sales of inventory to minimize the effects of foreign exchange rate movements				30 months
Amounts excluded from the assessment of hedge effectiveness		$ 0	$ 0	$ 0	$ 0
Fair value of outstanding derivative instruments, net unrealized gain deferred in other comprehensive income		67,900,000		67,900,000
Fair value of outstanding derivative instruments, net unrealized gain expected to be reclassified to earnings		112,900,000		112,900,000
Fair value of outstanding derivative instruments, unrealized gain net of taxes expected to be reclassified to earnings		86,600,000		86,600,000
4.625% Senior Notes due 2019 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative notional amount, Total		$ 250,000,000		$ 250,000,000
Interest rate of Senior Notes		4.625%		4.625%
Description of terms of interest rate derivatives terms				Receive a fixed interest rate of 4.625 percent and pay variable interest equal to the three-month LIBOR plus an average of 133 basis points.
Description of variable interest rate basis				Three-month LIBOR
4.625% Senior Notes due 2019 [Member] | LIBOR [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Interest rate swap basis spread on variable rate		1.33%		1.33%
3.375% Senior Notes due 2021 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative notional amount, Total		$ 300,000,000		$ 300,000,000
Interest rate of Senior Notes		3.375%		3.375%
Description of terms of interest rate derivatives terms				Receive a fixed interest rate of 3.375 percent and pay variable interest equal to the three-month LIBOR plus an average of 99 basis points.
Description of variable interest rate basis				Three-month LIBOR
3.375% Senior Notes due 2021 [Member] | LIBOR [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Interest rate swap basis spread on variable rate		0.99%		0.99%
4.450% Senior Notes due 2045 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Interest rate of Senior Notes		4.45%		4.45%
Debt instrument term				30 years
Cash Flow Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Fair value of outstanding derivative instruments, unrealized gain net of taxes deferred in other comprehensive income		$ 62,600,000		$ 62,600,000
Foreign Exchange Contract [Member] | U.S. Dollars [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative notional amount, Total		1,302,900,000		1,302,900,000
Foreign Exchange Contract [Member] | Swiss Francs [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative notional amount, Total		323,900,000		323,900,000
Foreign Exchange Forward Contracts [Member] | Nondesignated [Member] | Minimum [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative notional amount, Total		1,200,000,000		1,200,000,000
Foreign Exchange Forward Contracts [Member] | Nondesignated [Member] | Maximum [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative notional amount, Total		$ 1,700,000,000		$ 1,700,000,000