Annual report pursuant to Section 13 and 15(d)

Retirement Plans (Weighted Average Assumptions Used To Determine Projected Benefit Obligations For The Supplementary Retirement Plan) (Details)

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Retirement Plans (Weighted Average Assumptions Used To Determine Projected Benefit Obligations For The Supplementary Retirement Plan) (Details) (Supplementary Retirement Plan [Member])
Jan. 28, 2012
Jan. 29, 2011
Supplementary Retirement Plan [Member]
   
Discount rate 4.65% 5.40%
Rate of compensation increases 4.90% 4.90%