Risk Management and Derivatives (Narrative) (Details)	6 Months Ended	12 Months Ended
Jul. 29, 2017	Jul. 30, 2016	Jan. 30, 2016
Derivative [Line Items]
Derivative, Maturity Date	Aug. 03, 2018
Forward Contracts [Member]
Derivative [Line Items]
Derivative, Maturity Date	Aug. 03, 2018	Jul. 28, 2017	Feb. 28, 2018

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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