| **Summary of Significant Accounting Policies - Inventory (Details) - USD ($) $ in Millions** | Jan. 31, 2017 | Oct. 31, 2016 |
|----------------------------------------------------------------------------------------------|---------------|---------------|
| **Accounting Policies [Abstract]**                                                           |          |          |
| Gross truck bed inventory                                                                    | $ 388         | $ 410         |
| Inventory reserves                                                                           | $ 211         | $ 208         |

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No definition available.
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| - Definition
Gross 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
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| - Definition
Amount of valuation reserve for inventory.
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