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Summary of Significant Accounting Policies - Restricted Assets (Details) - USD ($) $ in Millions | Jan. 30, 2016 | Jan. 31, 2015
--- | --- | ---
Accounting Policies [Abstract] |  |
Restricted Cash and Investments | $ 185 | $ 292
Restricted Cash and Investments, Continuing Operations |  | 184
Restricted Cash and Investments, Held-for-Sale |  | $ 108

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- Definition Restricted Cash and Investments, Continuing Operations + References No definition available. + Details
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- Definition Restricted Cash and Investments, Held-for-Sale + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- References No definition available. + Details
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- Definition Cash and investments whose use in whole or in part is restricted for the long-term, generally by contractual agreements or regulatory requirements. For use in an unclassified balance sheet. + References No definition available. + Details
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