Annual report pursuant to Section 13 and 15(d)

Retirement Plans (Weighted Average Assumptions Used To Determine Net Periodic Pension Costs For The Pension Plan) (Details)

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Retirement Plans (Weighted Average Assumptions Used To Determine Net Periodic Pension Costs For The Pension Plan) (Details) - Pension Plan [Member]
12 Months Ended
Jan. 28, 2017
Jan. 30, 2016
Jan. 31, 2015
Discount rate for service cost (percent)   3.55% 4.50%
Discount rate for interest cost (percent)   3.55% 4.50%
Expected long-term return on plan assets 7.00% 7.00% 7.50%
Rate of compensation increases 4.10% 4.10% 4.10%
Minimum [Member]      
Discount rate for service cost (percent) 3.79%    
Discount rate for interest cost (percent) 2.96%    
Maximum [Member]      
Discount rate for service cost (percent) 4.26%    
Discount rate for interest cost (percent) 3.30%