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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $) Share data in Millions, unless otherwise specified | 3 Months Ended | 6 Months Ended | 12 Months Ended |  | 12 Months Ended |  | 6 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Aug. 02, 2014 | Aug. 03, 2013 | Aug. 02, 2014 | Aug. 03, 2013 | Feb. 01, 2014 Week | Feb. 02, 2013 | Jan. 31, 2015 Scenario, Forecast Week | Aug. 02, 2014 Outside United States | Aug. 02, 2014 Reinvest Undistributed Earnings | Aug. 02, 2014 Minimum | Aug. 02, 2014 Maximum
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Weeks in the fiscal year |  |  |  |  | 52 |  | 52 |  |  |  |
Share-based compensation | $ 22,200,000 | $ 19,200,000 | $ 42,000,000 | $ 35,679,000 |  |  |  |  |  |  |
Options to purchase common stock exercised | 0.6 |  | 1.7 |  |  |  |  |  |  |  |
Common stock outstanding | 30.7 |  | 30.7 |  |  |  |  |  |  |  |
Highly liquid investments maximum maturity days |  |  | 90 days |  |  |  |  |  |  |  |
Short-term investments maturity term |  |  |  |  |  |  |  |  |  | 90 days | 1 year
Cash and cash equivalents | 2,183,330,000 | 1,858,798,000 | 2,183,330,000 | 1,858,798,000 | 2,149,746,000 | 1,811,957,000 |  | 1,068,600,000 | 322,600,000 |  |
In-transit inventory accrual | $ 472,600,000 | $ 467,200,000 | $ 472,600,000 | $ 467,200,000 | $ 451,600,000 |  |  |  |  |  |

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3044-108585 + Details
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