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Risk Management And Derivatives (Narrative) (Details)
3 Months Ended 12 Months Ended
Apr. 30, 2016
May. 02, 2015
Jan. 30, 2016
Derivative [Line Items]      
Derivative, Maturity Date Apr. 28, 2017    
Forward Contracts [Member]      
Derivative [Line Items]      
Derivative, Maturity Date Apr. 28, 2017 Apr. 29, 2016 Jan. 31, 2017