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Shareholders' Equity (Deficit) (Narrative) (Details) - USD ($) $ in Millions | Apr. 30, 2016 | Aug. 01, 2015 | May 02, 2015
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June 2015 Repurchase Program [Member] |  |  |
Stock Repurchase Program, Authorized Amount |  | $ 250 |
February 2016 Repurchase Program [Member] |  |  |
Stock Repurchase Program, Authorized Amount | $ 500 |  |
February 2015 Repurchase Program [Member] [Member] |  |  |
Stock Repurchase Program, Authorized Amount |  |  | $ 250

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- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
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- Details
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- Details
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