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Description of Business and Summary of Significant Accounting Policies (Narrative) (Details) $ in Millions | 12 Months Ended
--- | ---
Jan. 28, 2017 USD ($) | Jan. 30, 2016 USD ($) | Jan. 31, 2015 USD ($)
Marketable Securities, Equity Securities, Current |  | $ 10 |
Deferred Rent Credit, Noncurrent | $ 191 | 150 |
Maturity of short term investments, maximum, in days | 90 |  |
Outstanding Check Carrying Amount | $ 5 | 30 |
Catalogue and advertising expense | 325 | 414 | $ 436
Unamortized portion of landlord allowances | $ 279 | $ 212 |

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- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 + Details
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- Definition For a classified balance sheet, the cumulative difference between the rental income or payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, or other systematic and rational basis more representative of the time pattern in which use or benefit is granted or derived from the leased property, expected to be recognized in income or expense, by the lessor or lessee, respectively, more than one year after the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.26(c)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7501430&loc=d3e39927-112707 + Details
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