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Taxes on Earnings (Provision For Taxes Effective Rate) (Details)
12 Months Ended
Jan. 28, 2017
Jan. 30, 2016
Jan. 31, 2015
Income Tax Disclosure [Abstract]      
Federal income taxes at the statutory rate (in percentage) 35.00% 35.00% 35.00%
State income taxes (net of federal benefit) and other, net (in percentage) 2.00% 2.00% 3.00%
Total (in percentage) 37.00% 37.00% 38.00%