| **Debt - Manufacturing Operations (Details) (USD $)In Millions, unless otherwise specified**      | Apr. 30, 2013 | Oct. 31, 2012 |
|---------------------------------------------------------------------------------------------------|---------------|---------------|
| **Debt Instrument [Line Items]**                                                                  |          |          |
| Debt Instrument, Interest Rate, Stated Percentage                                                 | 8.25%         |          |
| Debt, Current                                                                                     | $ 779         | $ 1,205       |
| Long-term Debt and Capital Lease Obligations                                                      | 4,002         | 3,566         |
| Manufacturing Operations [Member] | Line of Credit [Member]                                       |          |          |
| **Debt Instrument [Line Items]**                                                                  |          |          |
| Debt Instrument, Unamortized Discount                                                             | 5             | 9             |
| Long-term Debt                                                                                    | 693           | 991           |
| Manufacturing Operations [Member] | Notes Payable to Banks [Member]                               |          |          |
| **Debt Instrument [Line Items]**                                                                  |          |          |
| Debt Instrument, Unamortized Discount                                                             | 23            | 28            |
| Debt Instrument, Interest Rate, Stated Percentage                                                 | 8.25%         |          |
| Long-term Debt                                                                                    | 1,177         | 872           |
| Manufacturing Operations [Member] | Convertible Subordinated Debt [Member]                        |          |          |
| **Debt Instrument [Line Items]**                                                                  |          |          |
| Debt Instrument, Unamortized Discount                                                             | 38            | 50            |
| Debt Instrument, Interest Rate, Stated Percentage                                                 | 3.00%         |          |
| Long-term Debt                                                                                    | 532           | 520           |
| Manufacturing Operations [Member] | Debt Of Majority Owned Dealerships [Member]                   |          |          |
| **Debt Instrument [Line Items]**                                                                  |          |          |
| Long-term Debt                                                                                    | 43            | 60            |
| Manufacturing Operations [Member] | Financing Arrangements and Capital Lease Obligations [Member] |          |          |
| **Debt Instrument [Line Items]**                                                                  |          |          |
| Long-term Debt                                                                                    | 87            | 140           |
| Manufacturing Operations [Member] | Tax Exempt Bond [Member]                                      |          |          |
| **Debt Instrument [Line Items]**                                                                  |          |          |
| Debt Instrument, Interest Rate, Stated Percentage                                                 | 6.50%         |          |
| Long-term Debt                                                                                    | 225           | 225           |
| Manufacturing Operations [Member] | Promissory Note [Member]                                      |          |          |
| **Debt Instrument [Line Items]**                                                                  |          |          |
| Long-term Debt                                                                                    | 25            | 30            |
| Manufacturing Operations [Member] | Financed lease obligations [Member]                           |          |          |
| **Debt Instrument [Line Items]**                                                                  |          |          |
| Long-term Debt                                                                                    | 209           | 0             |
| Manufacturing Operations [Member] | Notes Payable, Other Payables [Member]                        |          |          |
| **Debt Instrument [Line Items]**                                                                  |          |          |
| Long-term Debt                                                                                    | 59            | 67            |
| Manufacturing Operations [Member] | Debt [Member]                                                 |          |          |
| **Debt Instrument [Line Items]**                                                                  |          |          |
| Long-term Debt                                                                                    | 3,050         | 2,905         |
| Debt, Current                                                                                     | 122           | 172           |
| Long-term Debt and Capital Lease Obligations                                                      | $ 2,928       | $ 2,733       |

| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Carrying value as of the balance sheet date of the sum of short-term debt and current maturities of long-term debt and capital lease obligations, which are due within one year (or one business cycle if longer).
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Interest rate stated in the contractual debt agreement.
+ References
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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.
+ References
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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.
+ References
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Sum of the carrying values as of the balance sheet date of all long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year or the normal operating cycle, if longer plus capital lease obligations due to be paid more than one year after the balance sheet date.
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