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STOCKHOLDERS' EQUITY - Stock Repurchase Program (Details) - USD ($) shares in Millions, $ in Millions |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Nov. 22, 2013 | Apr. 30, 2016 | Apr. 30, 2015 | Apr. 30, 2016 | Apr. 30, 2015 | May. 28, 2015
Share repurchase program |  |  |  |  |  |
Cost to repurchases shares of common stock under share repurchase program |  |  |  | $ 294 | $ 168 |
2014 Share Repurchase Program |  |  |  |  |  |
Share repurchase program |  |  |  |  |  |
Share repurchase program authorized amount | $ 1,000 |  |  |  |  |
Maintain weighted average diluted shares count (in shares) | 335.0 |  |  |  |  |
Cost to repurchases shares of common stock under share repurchase program |  |  | $ 168 | $ 98 |  |
Number of shares repurchased (in shares) |  |  | 4.0 | 2.4 |  |
2015 Repurchase Program |  |  |  |  |  |
Share repurchase program |  |  |  |  |  |
Share repurchase program authorized amount |  |  |  |  |  | $ 1,140
Cost to repurchases shares of common stock under share repurchase program |  | $ 94 |  | $ 196 |  |
Number of shares repurchased (in shares) |  | 2.6 |  | 5.1 |  |
Remaining authorized repurchase amount under share repurchase program |  | $ 944 |  | $ 944 |  |

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- Definition The cash outflow to reacquire common stock during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition Number of shares that have been repurchased during the period and are being held in treasury. + 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 02 -Paragraph 29, 30 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 + Details
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