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Interline Acquisition (Narrative) (Details) - USD ($) $ in Millions | Aug. 24, 2015 | Jan. 28, 2018 | Jan. 29, 2017 | Jan. 31, 2016 | Feb. 01, 2015
--- | --- | --- | --- | --- | ---
Business Acquisition [Line Items] |  |  |  |  |
Goodwill |  | $ 2,275 | $ 2,093 | $ 2,102 | $ 1,353
Interline Brands Inc [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Aggregate purchase price | $ 1,672 |  |  |  |
Goodwill | 788 |  |  |  |
Interline Brands Inc [Member] | Other Assets [Member] | Trade Names [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Intangible assets, infinite lived | 253 |  |  |  |
Interline Brands Inc [Member] | Other Assets [Member] | Customer Relationships [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Intangible assets, finite lived | $ 310 |  |  |  |
Intangible assets, weighted average useful life | 12 years |  |  |  |

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