| **Debt (Tables)**              | 3 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
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| **Debt Disclosure [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
| Debt                           | (in millions)January 31, 2017October 31, 2016Manufacturing operations   Senior Secured Term Loan Credit Facility, as amended, due 2020, net of unamortized discount of $13 and $14, respectively, and unamortized debt issuance costs of $7 at both dates$1,007 $1,0098.25% Senior Notes, due 2022 net of unamortized discount of $15 at both dates and unamortized debt issuance costs of $15 and $12, respectively1,420 1,1734.50% Senior Subordinated Convertible Notes, due 2018, net of unamortized discount of $9 and $10, respectively, and unamortized debt issuance costs of $1 at both dates190 1894.75% Senior Subordinated Convertible Notes, due 2019, net of unamortized discount of $21 and $24, respectively, and unamortized debt issuance costs of $4 at both dates386 383Financing arrangements and capital lease obligations40 42Loan Agreement related to 6.5% Tax Exempt Bonds, due 2040, net of unamortized debt issuance costs of $5 at both dates220 220Financed lease obligations107 52Other24 28Total Manufacturing operations debt3,394 3,096Less: Current portion72 71Net long-term Manufacturing operations debt$3,322 $3,025(in millions)January 31, 2017 October 31, 2016Financial Services operations   Asset-backed debt issued by consolidated SPEs, at fixed and variable rates, due serially through 2022, net of unamortized debt issuance costs of $6 at both dates$646 $753Bank credit facilities, at fixed and variable rates, due dates from 2017 through 2021, net of unamortized debt issuance costs of $2 and $3, respectively655 861Commercial paper, at variable rates, program matures in 202273 96Borrowings secured by operating and finance leases, at various rates, due serially through 202197 98Total Financial Services operations debt1,471 1,808Less: Current portion517 836Net long-term Financial Services operations debt$954 $972 |

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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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