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Supplemental Executive Retirement Plan (Details) (Supplemental Employee Retirement Plans, Defined Benefit [Member], USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Oct. 27, 2012
Oct. 29, 2011
Oct. 27, 2012
Oct. 29, 2011
Feb. 02, 2003
Supplemental Employee Retirement Plans, Defined Benefit [Member]
         
Supplemental Executive Retirement Plan Textuals [Line Items]          
Deferred compenseation arrangement with executives, monthly compensation benefit percentage based on final average compensation         50.00%
Deferred compensation arrangement with executives, compensation expense $ 1.3 $ 0.1 $ 2.9 $ 1.6