Fair Value Level 3 Inputs - (Details)	12 Months Ended	6 Months Ended
Feb. 01, 2014	Aug. 02, 2014 Discounted Cash Flow Analysis Level 3	Aug. 02, 2014 Auction Rate Securities (ARS) Discounted Cash Flow Analysis Level 3	Aug. 03, 2013 Auction Rate Securities (ARS) Discounted Cash Flow Analysis Level 3
Fair Value Inputs Assets Quantitative Information [Line Items]
Total Term	8 years 7 months 6 days	8 years 1 month 6 days	8 years 1 month 6 days	9 years 1 month 6 days
Comparitive Bond Discount Rate	0.14%		0.16%	0.19%
ARS Yield	0.07%		0.07%	0.11%

Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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- Definition

Ratio of the net operating income produced by an asset and its capital cost (original prices paid to buy the asset), used as an input to measure fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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- Definition

Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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