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Share Repurchases (Tables) | 9 Months Ended
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Oct. 31, 2015
Disclosure Share Repurchase Activity [Abstract] |
Share Repurchase Activity | Share repurchase activity is as follows:
| 13 Weeks Ended |  | 39 Weeks Ended
($ and shares in millions except average per share cost) | October 31, 2015 |  | November 1, 2014 |  | October 31, 2015 |  | November 1, 2014
Number of shares repurchased | 6.2 |  |  | 11.4 |  |  | 21.8 |  |  | 26.0 |
Total cost | $ | 200 |  |  | $ | 433 |  |  | $ | 807 |  |  | $ | 1,016 |
Average per share cost including commissions | $ | 32.17 |  |  | $ | 37.95 |  |  | $ | 36.93 |  |  | $ | 39.15 |

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- Definition Tabular disclosure of treasury stock, including, but not limited to, average cost per share, description of share repurchase program, shares repurchased, shares held for each class of treasury stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23315-112656 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23285-112656 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23309-112656 + Details
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