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Goodwill and Intangible Assets - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Oct. 26, 2012	Oct. 28, 2011	Oct. 29, 2010
Goodwill And Intangible Assets [Line Items]
Amortization expense for finite-lived intangible assets	$ 37.4	$ 12.6	$ 8.2

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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