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Segment Reporting (Percentage of Net Sales Represented by Each Product Group) (Details)	12 Months Ended
	Feb. 01, 2014	Feb. 02, 2013	Jan. 28, 2012
Revenue from External Customer [Line Items]
Percentage of sales by product group (percent)	100.00%	100.00%	100.00%
Leisure [Member]
Revenue from External Customer [Line Items]
Percentage of sales by product group (percent)	51.70%	52.60%	50.60%
Fashion and home [Member]
Revenue from External Customer [Line Items]
Percentage of sales by product group (percent)	29.30%	30.30%	31.70%
Party and snack [Member]
Revenue from External Customer [Line Items]
Percentage of sales by product group (percent)	19.00%	17.10%	17.70%

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- Definition

Percentage Of Sales Volume

+ References

No definition available.

+ Details

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Namespace Prefix:	five_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

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- Details

Name:	us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration