| **Inventories**                     | 3 Months Ended                                                                                                                                                                                                                                                                                 |
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| **Inventory Disclosure [Abstract]** |                                                                                                                                                                                                                                                                                           |
| Inventories                         | InventoriesThe 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
The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory.
+ References
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