| **Inventories (Tables)**            | 3 Months Ended                                                                                                                                                                                                                                                                     |
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| **Inventory Disclosure [Abstract]** |                                                                                                                                                                                                                                                                               |
| Schedule of inventories             | he following table presents the components of Inventories in our Consolidated Balance Sheets:(in millions)January 31, 2017 October 31, 2016Finished products$628 $678Work in process111 46Raw materials283 220Total inventories, net$1,022 $944 |

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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.
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