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Share Repurchases - Additional Information (Details) - USD ($) $ in Millions | Aug. 01, 2015 | Feb. 26, 2015 | Jan. 31, 2015 | Aug. 02, 2014
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Disclosure Share Repurchases Additional Information [Abstract] |  |  |  |
Stock Repurchase Program, Authorized Amount |  | $ 2,500 |  |
Share repurchases, remaining amount | $ 695 |  |  |
Stock Repurchase Program Amount Not Paid | $ 0 |  | $ 15 | $ 5

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- Definition Disclosure - Share Repurchases - Additional Information [Abstract] + References No definition available. + Details
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- Definition Stock Repurchase Program Amount Not Paid. + References No definition available. + Details
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- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
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- Definition Amount remaining of a stock repurchase plan authorized. + References No definition available. + Details
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