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Share Repurchase - Narrative (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 12 Months Ended
--- | ---
Jan. 30, 2016 | Jan. 31, 2015 | Feb. 01, 2014
Equity, Class of Treasury Stock [Line Items] |  |  |
Average price (in dollars per share) | $ 77.07 | $ 54.07 | $ 67.41
Total number of shares purchased | 0.1 | 0.8 | 0.2
Total cash investment | $ 3,445 | $ 46 | $ 1,478
Cash Investment |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |
Total cash investment | 3 | 41 | 14
Prepaid Forward Contracts Market Value |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |
Aggregate market value | 7 | $ 46 | $ 17
Repurchase of Share Repurchase Program 2015 |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |
Amount of expansion of existing share repurchase program | 5,000 |  |
Amount approved by board of directors for share repurchase program | $ 10,000 |  |
Shares of common stock repurchased | 94.6 |  |
Average price (in dollars per share) | $ 69.57 |  |
Total investment | $ 6,600 |  |

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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 SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 + Details
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