| **Fair Value Measurements (Tables)**                               | 6 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
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| **Fair Value Disclosures [Abstract]**                              |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
| Financial instruments measured at fair value, recurring basis      | The following table presents the financial instruments measured at fair value on a recurring basis:  April 30, 2013 October 31, 2012(in millions)Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 TotalAssets               Marketable securities:               U.S. Treasury bills$662 $— $— $662 $420 $— $— $420Other71 — — 71 46 — — 46Derivative financial instruments:               Foreign currency contracts— 2 — 2 — — — —Total assets$733 $2 $— $735 $466 $— $— $466Liabilities               Derivative financial instruments:               Commodity contracts$— $4 $— $4 $— $4 $— $4Foreign currency contracts— 1 — 1 — — — —Guarantees— — 7 7 — — 7 7Total liabilities$— $5 $7 $12 $— $4 $7 $11                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
| Financial instruments classified within Level 3                    | The following tables present the changes for those financial instruments classified within Level 3 of the valuation hierarchy: Three Months Ended April 30, 2013 2012(in millions)Guarantees Commodity contracts Guarantees Commodity contractsBalance at February 1$(7) $— $(7) $—Total gains (losses) (realized/unrealized) included in earnings(A)— — — —Transfers out of Level 3— — — —Issuances— — — —Settlements— — — —Balance at April 30$(7) $— $(7) $—Change in unrealized gains on assets and liabilities still held$— $— $— $— Six Months Ended April 30, 2013 2012(in millions)Guarantees Commodity contracts Guarantees Commodity contractsBalance at November 1$(7) $— $(6) $(2)Total gains (losses) (realized/unrealized) included in earnings(A)— — — (1)Transfers out of Level 3— — — 2Issuances— — (1) —Settlements— — — 1Balance at April 30$(7) $— $(7) $—Change in unrealized gains on assets and liabilities still held$— $— $— $—_________________________(A)For commodity contracts, losses are included in Cost of products sold.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| Financial instruments measured at fair value, nonrecurring basis   | The following table presents these financial instruments measured at fair value on a nonrecurring basis:(in millions)April 30, 2013 October 31, 2012Level 2 financial instruments   Carrying value of impaired finance receivables (A)$12 $14Specific loss reserve7 9Fair value$5 $5_________________________(A)Certain impaired finance receivables are measured at fair value on a nonrecurring basis. An impairment charge is recorded for the amount by which the carrying value of the receivables exceeds the fair value of the underlying collateral, net of remarketing costs. Fair values of the underlying collateral are determined by reference to dealer vehicle value publications adjusted for certain market factors.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
| Carrying values and estimated fair values of financial instruments | he carrying values and estimated fair values of financial instruments: April 30, 2013 Estimated Fair Value Carrying Value(in millions)Level 1 Level 2 Level 3 Total Assets         Retail notes$— $— $478 $478 $478Notes receivable— — 17 17 13Liabilities         Debt:         Manufacturing operations         Senior Secured Term Loan Credit Facility, as Amended due 2017— — 687 687 6938.25% Senior Notes, due 20211,322 — — 1,322 1,1773.0% Senior Subordinated Convertible Notes, due 2014(A)585 — — 585 532Debt of majority-owned dealerships— — 43 43 43Financing arrangements— — 54 54 83Loan Agreement related to 6.5% Tax Exempt Bonds, due 2040— 245 — 245 225Promissory Note— — 25 25 25Financed lease obligations— — 209 209 209Other— — 58 58 59Financial Services operations         Asset-backed debt issued by consolidated SPEs, at various rates, due serially through 2019— — 807 807 805Bank revolvers, at fixed and variable rates, due dates from 2013 through 2019— — 832 832 861Borrowings secured by operating and finance leases, at various rates, due serially through 2017— — 65 65 65 October 31, 2012 Estimated Fair Value Carrying Value(in millions)Level 1 Level 2 Level 3 Total Assets         Retail notes$— $— $613 $613 $618Notes receivable— — 27 27 27Liabilities         Debt:         Manufacturing operations         Senior Secured Term Loan Credit Facility, as Amended due 2017— — 1,047 1,047 9918.25% Senior Notes, due 2021899 — — 899 8723.0% Senior Subordinated Convertible Notes, due 2014(A)514 — — 514 520Debt of majority-owned dealerships— — 60 60 60Financing arrangements— — 102 102 136Loan Agreement related to 6.5% Tax Exempt Bonds, due 2040— 234 — 234 225Promissory Note— — 29 29 30Other— — 67 67 67Financial Services operations         Asset-backed debt issued by consolidated SPEs, at various rates, due serially through 2019— — 994 994 994Bank revolvers, at fixed and variable rates, due dates from 2013 through 2019— — 734 734 763Commercial paper, at variable rates, matured in 201331 — — 31 31Borrowings secured by operating and finance leases, at various rates, due serially through 2017— — 79 79 78_________________________(A)The carrying value represents the consolidated financial statement amount of the debt which excludes the allocation of the conversion feature to equity, while the fair value is based on quoted market prices for the convertible note which includes the equity feature. |

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| - Definition
Tabular disclosure of assets and liabilities by class, including financial instruments measured at fair value that are classified in shareholders' equity, if any, that are measured at fair value on a nonrecurring basis in periods after initial recognition (for example, impaired assets). Disclosures may include, but are not limited to: (a) the fair value measurements recorded and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements are categorized in their entirety (levels 1, 2, 3).
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| - Definition
Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset.
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| - Definition
Tabular disclosure of the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments, assets, and liabilities. Such certain disclosures about the financial instruments, assets, and liabilities include: (1) the fair value of the required items together with their carrying amounts (as appropriate) and (2) the methodology and assumptions used in developing such estimates of fair value.
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| - Definition
Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).
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