Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (Level 2, USD $) In Thousands, unless otherwise specified	Jul. 26, 2013	Oct. 26, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Embedded derivatives	$ 1,215	$ 51
Embedded derivatives	77	470
Designated as Hedging Instrument
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative contracts designated as hedging instruments	1,507	7,753
Derivative contracts designated as hedging instruments	2,915	2,143
Not Designated as Hedging Instrument
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative contracts not designated as hedging instruments	1,161	1,387
Derivative contracts not designated as hedging instruments	$ 1,480	$ 361