Branch Closure and Consolidation Activities - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
Oct. 28, 2012	Oct. 28, 2012 Employee	Jan. 29, 2012
Restructuring Cost and Reserve [Line Items]
Branches closed or consolidated		235
Reduced workforce personnel		5,000
Liability for the branch closure and consolidation activities	$ 12	$ 12	$ 16
Period for lease obligations extending out		14 years
Non-cash reduction	$ 2	$ 2
Occupancy
Restructuring Cost and Reserve [Line Items]
Expected period for payments for occupancy costs		6 years

Carrying amount as of the balance sheet date of known and estimated obligations associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid in the next twelve months or in the normal operating cycle if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

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Amount of consideration other than cash paid in the period to fully or partially settle a specified, previously accrued type of restructuring cost.

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