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Basis of Presentation Narrative (Details) $ in Millions | 6 Months Ended
--- | ---
Jul. 29, 2017 USD ($) | Jul. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |
Reporting period lag for consolidation of financial results | 1 month |
Number of Weeks in Fiscal Period | 26 | 26
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
ASU adoption cumulative adjustment | $ (2) |
Retained Earnings |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |
ASU adoption cumulative adjustment | $ (12) |

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- Definition ASU adoption cumulative adjustment is the beginning balance adjustment to retained earnings required when adopting new accounting guidance using a modified retrospective approach. + References No definition available. + Details
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- Definition Number of Weeks in Fiscal Period + References No definition available. + Details
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- Definition Reporting Lag for Certain Foreign Operations in Financial Statements + References No definition available. + Details
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