Income Taxes - Unrecognized Tax Benefit (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Oct. 26, 2012	Oct. 28, 2011
Reconciliation Of Unrecognized Tax Benefits [Line Items]
Balance, beginning of year	$ 10,370	$ 6,746
Interest included in the beginning balance	(1,271)
Additions for current year tax positions and acquisition	25,735	4,984
Additions for prior year tax positions	167	255
Reductions for prior year tax positions	(1,530)	(765)
Reductions for changes in judgments		(850)
Balance, end of year	$ 33,471	$ 10,370