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Taxes (Reason For Difference Between Expected Tax Computed And Income Tax Expense) (Details) - USD ($) $ in Millions | 12 Months Ended
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Jan. 28, 2017 | Jan. 30, 2016 | Jan. 31, 2015
Taxes Payable [Abstract] |  |  |
Expected tax | $ 333 | $ 587 | $ 836
State and local income taxes, net of federal income tax benefit | 12 | 43 | 59
Historic rehabilitation tax credit | (1) | (12) | (20)
Change in valuation allowance | 9 | 3 | 1
Other | (12) | (13) | (12)
Income tax expense (benefit), total | $ 341 | $ 608 | $ 864

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