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Commitments and Contingencies - Narrative (Details) $ in Millions | 12 Months Ended | 27 Months Ended
--- | --- | ---
Jan. 30, 2016 USD ($) action credit_card_network | Jan. 31, 2015 USD ($) | Feb. 01, 2014 USD ($) | Jan. 30, 2016 USD ($)
Loss Contingencies [Line Items] |  |  |  |
Cumulative expenses | $ 39 | $ 145 | $ 17 |
Trade letters of credit | 1,510 | 1,447 |  | $ 1,510
Purchase Obligations |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Purchase obligations | $ 1,950 | 2,411 |  | 1,950
Purchase obligation term | 3 years |  |  |
Real Estate Obligations |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Real estate obligations | $ 279 | 243 |  | 279
Real estate obligation period | 1 year |  |  |
Data Breach |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of major payment card networks | credit_card_network | 4 |  |  |
Number of pretax data breach-related expenses | $ 39 | 191 |  |
Expected insurance proceeds | $ 0 | 46 |  | 90
Net expenses |  | 145 |  | 201
Cumulative expenses |  |  |  | 291
Data Breach | Canada |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of previously filed action | action | 1 |  |  |
Standby Letters of Credit and Surety Bonds |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Trade letters of credit | $ 438 | $ 459 |  | $ 438

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