| **Inventories (Tables)**            | 12 Months Ended                                                                                                                                                                                                                                                               |
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| **Inventory Disclosure [Abstract]** |                                                                                                                                                                                                                                                                          |
| Schedule of inventories             | As of October 31, the components of inventories are as follows:   2011 2010(in millions)    Finished products $873 $893Work in process 174 202Raw materials 667 473Total inventories $1,714 $1,568 |

| X                                                                                                                                                               |
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
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| - Definition
Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic  -SubTopic  -Publisher SEC -Number 210 -Article 5 -Subparagraph a,b,c -Name Regulation S-X (SX) -Paragraph 6 -Section 2
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