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Summary of Significant Accounting Policies - PP&E (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Jan. 31, 2015 | Jan. 30, 2016
Property, Plant and Equipment [Line Items] |  |
Capital Leases, Balance Sheet, Assets by Major Class, Net | $ 44 | $ 165
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation | $ 75 | $ 107
Building [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Property, Plant and Equipment, Useful Life | 35 years |
Leasehold Improvements [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Estimated useful lives, minimum (in years) | 3 years |
Estimated useful lives, maximum (in years) | 25 years |
Fixtures and Equipment [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Estimated useful lives, minimum (in years) | 3 years |
Estimated useful lives, maximum (in years) | 20 years |
Assets Held under Capital Leases [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Estimated useful lives, minimum (in years) | 2 years |
Estimated useful lives, maximum (in years) | 20 years |

X
- Definition The maximum useful life of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. + References No definition available. + Details
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- Definition The minimum useful life of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. + References No definition available. + Details
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- Definition The total gross amount less the charge for the use of the long-lived depreciable assets subject to a lease meeting the criteria for capitalization. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 + Details
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- Definition The total charge for the use of long-lived depreciable assets subject to a lease meeting the criteria for capitalization. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6455314&loc=d3e45014-112735 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 2) -URI http://asc.fasb.org/extlink&oid=6584154&loc=d3e38371-112697 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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