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Basis of Presentation (Details) $ in Millions | 3 Months Ended |  |
--- | --- | --- | ---
Apr. 29, 2017 USD ($) | Apr. 30, 2016 USD ($) | Jan. 28, 2017 USD ($) | Jan. 30, 2016 USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |  |
Number of Weeks in Fiscal Period | 13 | 13 |  |
Reporting period lag for consolidation of financial results | 1 month |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Other Noncash Income (Expense) | $ (1) | $ (3) |  |
Net Cash Provided by (Used in) Operating Activities | 243 | 492 |  |
Net Cash Provided by (Used in) Investing Activities | (423) | (40) |  |
Proceeds from (Payments for) Other Financing Activities | 0 | 10 |  |
Net Cash Provided by (Used in) Financing Activities | (413) | (621) |  |
Cash, cash equivalents and restricted cash as beginning of period |  |  | $ 2,433 | $ 2,161
Cash, cash equivalents and restricted cash at end of period | 1,834 | 2,032 | $ 2,433 |
ASU adoption cumulative adjustment | (2) |  |  |
Retained Earnings [Member] |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
ASU adoption cumulative adjustment | $ (12) |  |  |
As reported [Member] |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Other Noncash Income (Expense) |  | (12) |  |
Net Cash Provided by (Used in) Operating Activities |  | 483 |  |
Increase (Decrease) in Restricted Cash and Investments |  | (2) |  |
Net Cash Provided by (Used in) Investing Activities |  | (42) |  |
Proceeds from (Payments for) Other Financing Activities |  | 19 |  |
Net Cash Provided by (Used in) Financing Activities |  | (612) |  |
Increase (Decrease) in cash, cash equivalents and restricted cash |  | (131) |  |
Cash, cash equivalents and restricted cash as beginning of period |  |  |  | 1,976
Cash, cash equivalents and restricted cash at end of period |  | 1,845 |  |
Accounting Standards Update 2016-18 [Member] |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Increase (Decrease) in Restricted Cash and Investments |  | 2 |  |
Net Cash Provided by (Used in) Investing Activities |  | 2 |  |
Increase (Decrease) in cash, cash equivalents and restricted cash |  | 2 |  |
Cash, cash equivalents and restricted cash as beginning of period |  |  |  | 185
Cash, cash equivalents and restricted cash at end of period |  | 187 |  |
As Adjusted [Member] |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Other Noncash Income (Expense) |  | (3) |  |
Net Cash Provided by (Used in) Operating Activities |  | 492 |  |
Increase (Decrease) in Restricted Cash and Investments |  | 0 |  |
Net Cash Provided by (Used in) Investing Activities |  | (40) |  |
Proceeds from (Payments for) Other Financing Activities |  | 10 |  |
Net Cash Provided by (Used in) Financing Activities |  | (621) |  |
Increase (Decrease) in cash, cash equivalents and restricted cash |  | (129) |  |
Cash, cash equivalents and restricted cash as beginning of period |  |  |  | $ 2,161
Cash, cash equivalents and restricted cash at end of period |  | 2,032 |  |
Accounting Standards Update 2016-09 [Member] |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |
Other Noncash Income (Expense) |  | 9 |  |
Net Cash Provided by (Used in) Operating Activities |  | 9 |  |
Proceeds from (Payments for) Other Financing Activities |  | (9) |  |
Net Cash Provided by (Used in) Financing Activities |  | $ (9) |  |

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