Duration of a fiscal period, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but not limited to, weeks in a year or quarter.

No definition available.

Name:	us-gaap_FiscalPeriodDuration
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Basis of Presentation (Details)	12 Months Ended
Basis of Presentation (Details)	Jan. 28, 2017	Jan. 30, 2016	Jan. 31, 2015
Fiscal Year
Number of days in fiscal year		364 days	364 days
Forecast
Fiscal Year
Number of days in fiscal year	364 days