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Restructuring Initiatives (Details) - USD ($)
3 Months Ended
May. 02, 2015
Apr. 30, 2016
Restructuring Cost and Reserve [Line Items]    
Restructuring balance $ 71,000,000 $ 0
2015 Restructuring | SG&A    
Restructuring Cost and Reserve [Line Items]    
Severance and other benefits-related charges $ 103,000,000