| **Debt (Tables)**              | 6 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
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| **Debt Disclosure [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
| Debt                           | (in millions)April 30, 2016October 31, 2015Manufacturing operations   Senior Secured Term Loan Credit Facility, as amended, due 2020, net of unamortized discount of $15 and $17, respectively$1,022 $1,0238.25% Senior Notes, due 2022, net of unamortized discount of $17 and $18, respectively1,183 1,1824.50% Senior Subordinated Convertible Notes, due 2018, net of unamortized discount of $12 and $14, respectively188 1864.75% Senior Subordinated Convertible Notes, due 2019, net of unamortized discount of $28 and $32, respectively383 379Debt of majority-owned dealerships13 28Financing arrangements and capital lease obligations46 49Loan Agreement related to 6.5% Tax Exempt Bonds, due 2040225 225Financed lease obligations75 111Other16 15Total Manufacturing operations debt3,151 3,198Less: Current portion83 103Net long-term Manufacturing operations debt$3,068 $3,095(in millions)April 30, 2016 October 31, 2015Financial Services operations   Asset-backed debt issued by consolidated SPEs, at fixed and variable rates, due serially through 2021$933 $870Bank credit facilities, at fixed and variable rates, due dates from 2016 through 2021947 1,063Commercial paper, at variable rates, program matures in 201788 86Borrowings secured by operating and finance leases, at various rates, due serially through 2021106 81Total Financial Services operations debt2,074 2,100Less: Current portion1,168 1,007Net long-term Financial Services operations debt$906 $1,093 |

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| - Definition
Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation.
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