| **Debt - Schedule of Debt Maturities (Details) $ in Millions**                 | Oct. 31, 2015 USD ($) |
|--------------------------------------------------------------------------------|-----------------------|
| **Debt Instrument [Line Items]**                                               |                  |
| Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months      | $ 1,110               |
| Debt Instrument, Unamortized Discount                                          | 81                    |
| Long-term Debt                                                                 | 5,298                 |
| Long-term Debt, Maturities, Repayments of Principal in Year Two                | 1,032                 |
| Long-term Debt, Maturities, Repayments of Principal in Year Three              | 330                   |
| Long-term Debt, Maturities, Repayments of Principal in Year Four               | 458                   |
| Long-term Debt, Maturities, Repayments of Principal in Year Five               | 1,013                 |
| Long-term Debt, Maturities, Repayments of Principal in Rolling after Year Five | 1,436                 |
| Long-term Debt, Gross                                                          | 5,379                 |
| Manufacturing Operations [Member]                                              |                  |
| **Debt Instrument [Line Items]**                                               |                  |
| Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months      | 103                   |
| Debt Instrument, Unamortized Discount                                          | 81                    |
| Long-term Debt                                                                 | 3,198                 |
| Long-term Debt, Maturities, Repayments of Principal in Year Two                | 55                    |
| Long-term Debt, Maturities, Repayments of Principal in Year Three              | 245                   |
| Long-term Debt, Maturities, Repayments of Principal in Year Four               | 433                   |
| Long-term Debt, Maturities, Repayments of Principal in Year Five               | 1,008                 |
| Long-term Debt, Maturities, Repayments of Principal in Rolling after Year Five | 1,435                 |
| Long-term Debt, Gross                                                          | 3,279                 |
| Financial Services Operations [Member]                                         |                  |
| **Debt Instrument [Line Items]**                                               |                  |
| Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months      | 1,007                 |
| Debt Instrument, Unamortized Discount                                          | 0                     |
| Long-term Debt                                                                 | 2,100                 |
| Long-term Debt, Maturities, Repayments of Principal in Year Two                | 977                   |
| Long-term Debt, Maturities, Repayments of Principal in Year Three              | 85                    |
| Long-term Debt, Maturities, Repayments of Principal in Year Four               | 25                    |
| Long-term Debt, Maturities, Repayments of Principal in Year Five               | 5                     |
| Long-term Debt, Maturities, Repayments of Principal in Rolling after Year Five | 1                     |
| Long-term Debt, Gross                                                          | $ 2,100               |

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| - Definition
Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.
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| - Definition
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
+ References
No definition available.
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
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| - Definition
Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth rolling twelve months following the latest balance sheet. For interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.
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