Taxes (Narrative) (Details) (USD $)	6 Months Ended
Jul. 31, 2011	Jan. 30, 2011
Taxes
Statutory federal income tax rate	35.00%
Gross unrecognized tax benefits	$ 17,000,000	$ 17,000,000
Net tax benefits (after federal impact of state items)	14,700,000	14,700,000
Unrecognized tax benefit interest and penalties	293,000	293,000
Estimated unrecognized tax benefits decrease as a result of expiring statutes within next twelve months	$ 4,500,000

The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

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This element represents the total of accruals as of the date of the statement of financial position for interest recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.

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