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Derivative Instruments Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jul. 29, 2017 | Jul. 30, 2016 | Jul. 29, 2017 | Jul. 30, 2016 | Jan. 28, 2017
Derivatives, Fair Value [Line Items] |  |  |  |  |
Unrealized Gain (Loss) on Foreign Currency Derivatives, Net, before Tax | $ (28) | $ 5 | $ (18) | $ (11) |
Interest Rate Fair Value Hedges | 2 | 8 | 2 | 8 | $ 2
Foreign Currency Cash Flow Hedge Asset at Fair Value | 8 | 16 | 8 | 16 | 18
Foreign Currency Cash Flow Hedge Liability at Fair Value | 11 |  | 11 |  | 1
Other Current Assets [Member] |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Foreign Currency Cash Flow Hedge Asset at Fair Value | 8 | 0 | 8 | 0 | 18
Accounts Payable and Accrued Liabilities [Member] |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Foreign Currency Cash Flow Hedge Liability at Fair Value | 8 | 0 | 8 | 0 | 1
Other Assets [Member] |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Interest Rate Fair Value Hedges | 2 | 8 | 2 | 8 | 2
Foreign Currency Cash Flow Hedge Asset at Fair Value | 0 | 16 | 0 | 16 | 0
Other Noncurrent Liabilities [Member] |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Foreign Currency Cash Flow Hedge Liability at Fair Value | $ 3 | $ 0 | $ 3 | $ 0 | $ 0

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