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Summary of Significant Accounting Policies (Narrative) (Details) $ in Millions | 12 Months Ended
--- | ---
Jan. 28, 2018 USD ($) | Jan. 29, 2017 USD ($) | Jan. 31, 2016 USD ($)
Accounting Policies [Line Items] |  |  |
Fiscal year, period | 52 weeks | 52 weeks | 52 weeks
Investments classified as cash equivalents, original maturity | 3 months |  |
Percentage of merchandise inventories that are calculated using a cost method | 30.00% |  |
Quantitative goodwill impairment assessment time interval | 3 years |  |
Goodwill Impairment | $ 0 | $ 0 | $ 0
Expiration date of Private Label Credit Card program | Dec. 31, 2028 |  |
Number of Cost of Credit Components | 3 |  |
Recognized income tax positions are measured at the largest amount exceeding a probability of | 50.00% |  |
Maximum [Member] | Other Intangible Assets [Member] |  |  |
Accounting Policies [Line Items] |  |  |
Intangible asset, useful life | 12 years |  |
Software and Software Development Costs [Member] | Minimum [Member] |  |  |
Accounting Policies [Line Items] |  |  |
Software, useful life | 3 years |  |
Software and Software Development Costs [Member] | Maximum [Member] |  |  |
Accounting Policies [Line Items] |  |  |
Software, useful life | 6 years |  |

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