Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $) In Thousands, unless otherwise specified	Oct. 25, 2013	Oct. 26, 2012
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Embedded derivatives	$ 706	$ 51
Embedded derivatives	344	470
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent purchase obligation	4,000	9,000
Designated as Hedging Instrument | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative contracts designated as hedging instruments	2,270	7,753
Derivative contracts designated as hedging instruments	4,541	2,143
Not Designated as Hedging Instrument | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative contracts not designated as hedging instruments	3,670	1,387
Derivative contracts not designated as hedging instruments	$ 122	$ 361