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Property, Plant and Equipment - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Nov. 25, 2012	Nov. 27, 2011	Nov. 28, 2010
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 110.5	$ 104.8	$ 88.9

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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