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Shareholders' Equity Accelerated Share Repurchase (Details) - USD ($) shares in Millions, $ in Millions | 12 Months Ended
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Jan. 28, 2017 | Jan. 30, 2016
Equity [Abstract] |  |
Accelerated Share Repurchase Price (low end of the range) | $ 150 |
Accelerated Share Repurchase Price (high end of the range) | $ 175 |
Stock Repurchased and Retired at ASR Settlement, Shares | 1.6 |
Prepaid repurchase of common stock | $ (55) | $ 55
Stock Repurchased and Retired During Period, Value | 45 | 120
Accelerated Share Repurchase Settlement Amount |  | $ 165
Accelerated Share Repurchases, Description of Adjustment to Initial Price Paid | $ 10 |

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- Definition Accelerated Share Repurchase Price (high end of the range) + References No definition available. + Details
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- Definition Accelerated Share Repurchase Price (low end of the range) + References No definition available. + Details
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- Definition Accelerated Share Repurchase Settlement Amount + References No definition available. + Details
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- Definition Prepaid repurchase of common stock + References No definition available. + Details
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- Definition The amount needed to adjust previously recorded stockholders' equity balances to the actual aggregate amounts paid, whether in cash or other consideration, to acquire all of the shares purchased under an Accelerated Share Repurchase arrangement. + References No definition available. + Details
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- References No definition available. + Details
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- Definition Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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