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Risk Management and Derivatives (Narrative) (Details)
9 Months Ended 12 Months Ended
Oct. 28, 2017
Oct. 29, 2016
Jan. 30, 2016
Derivative [Line Items]      
Derivative, Maturity Date Nov. 02, 2018    
Forward Contracts [Member]      
Derivative [Line Items]      
Derivative, Maturity Date Nov. 02, 2018 Oct. 26, 2017 Feb. 28, 2018