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Goodwill and Other Intangible Assets - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Oct. 27, 2012	Oct. 29, 2011	Oct. 27, 2012	Oct. 29, 2011
Goodwill and Intangible Assets Disclosure [Line Items]
Amortization expense	$ 3	$ 4	$ 10	$ 13
Addition in intangible asset			8
Effect of weakening of the euro as compared to the U.S. dollar on intangible asset			$ 3
Lease acquisition addition, amortization period	10 years		10 years

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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