Schedule of Outstanding Foreign Currency Forward Contracts (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 28, 2014
Buy Contracts
Derivative [Line Items]
Derivatives Designated as Hedging Instruments	$ 59,270
Derivatives Not Designated as Hedging Instruments	75,165
Buy Contracts | Swiss Francs
Derivative [Line Items]
Derivatives Not Designated as Hedging Instruments	6,684
Buy Contracts | Euro
Derivative [Line Items]
Derivatives Designated as Hedging Instruments	59,270
Derivatives Not Designated as Hedging Instruments	22,430
Buy Contracts | Korea (South), Won
Derivative [Line Items]
Derivatives Not Designated as Hedging Instruments	12,564
Buy Contracts | Taiwan Dollar
Derivative [Line Items]
Derivatives Not Designated as Hedging Instruments	33,487
Sell Contracts
Derivative [Line Items]
Derivatives Designated as Hedging Instruments	58,868
Derivatives Not Designated as Hedging Instruments	21,379
Sell Contracts | Japanese Yen
Derivative [Line Items]
Derivatives Designated as Hedging Instruments	58,868
Derivatives Not Designated as Hedging Instruments	$ 21,379