| **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, 2016 October 31, 2015(in millions)Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 TotalAssets               Marketable securities:               U.S. Treasury bills$41 $— $— $41 $53 $— $— $53Other187 — — 187 106 — — 106Derivative financial instruments:               Commodity forward contracts(A)— 6 — 6 — — — —Foreign currency contracts(A)— — — — — 1 — 1Total assets$228 $6 $— $234 $159 $1 $— $160Liabilities               Derivative financial instruments:               Commodity forward contracts(B)$— $2 $— $2 $— $2 $— $2Foreign currency contracts(B)— 5 — 5 — 2 — 2Guarantees— — 19 19 — — 10 10Total liabilities$— $7 $19 $26 $— $4 $10 $14_________________________(A)The asset value of commodity forward contracts and foreign currency contracts is included in other current assets as of April 30, 2016 and October 31, 2015 in the accompanying Consolidated Balance Sheets.(B)The liability value of commodity forward contracts and foreign currency contracts is included in other current liabilities as of April 30, 2016 and October 31, 2015 in the accompanying Consolidated Balance Sheets.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
| Financial instruments classified within Level 3                    | The following table presents the changes for those financial instruments classified within Level 3 of the valuation hierarchy: Three Months Ended April 30, Six Months Ended April 30,(in millions)2016 2015 2016 2015Guarantees, at beginning of period$(10) $(8) $(10) $(8)Transfers out of Level 3— — — —Issuances(10) — (11) —Settlements1 1 2 1Guarantees, at end of period$(19) $(7) $(19) $(7)Change in unrealized gains on assets (liabilities) still held$— $— $— $—                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
| Financial instruments measured at fair value, nonrecurring basis   | The following table presents the financial instruments measured at fair value on a nonrecurring basis:(in millions)April 30, 2016October 31, 2015Level 2 financial instruments   Carrying value of impaired finance receivables (A)$21 $21Specific loss reserve(11) (9)Fair value$10 $12_________________________(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 | The following tables present the carrying values and estimated fair values of financial instruments: As of April 30, 2016 Estimated Fair Value Carrying Value(in millions)Level 1 Level 2 Level 3 Total Assets         Retail notes$— $— $146 $146 $145Notes receivable— — 1 1 1Liabilities         Debt:         Manufacturing operations         Senior Secured Term Loan Credit Facility, as Amended, due 2020— — 986 986 1,0228.25% Senior Notes, due 2022872 — — 872 1,1834.50% Senior Subordinated Convertible Notes, due 2018(A)— — 141 141 1884.75% Senior Subordinated Convertible Notes, due 2019(A)— — 276 276 383Debt of majority-owned dealerships— — 13 13 13Financing arrangements— — 15 15 40Loan Agreement related to 6.50% Tax Exempt Bonds, due 2040— 227 — 227 225Financed lease obligations— — 75 75 75Other— — 16 16 16Financial Services operations         Asset-backed debt issued by consolidated SPEs, at various rates, due serially through 2021— — 929 929 933Bank credit facilities, at fixed and variable rates, due dates from 2016 through 2021— — 930 930 947Commercial paper, at variable rates, program matures in 201788 — — 88 88Borrowings secured by operating and finance leases, at various rates, due serially through 2021— — 106 106 106 As of October 31, 2015 Estimated Fair Value Carrying Value(in millions)Level 1 Level 2 Level 3 Total Assets         Retail notes$— $— $170 $170 $166Notes receivable— — 3 3 3Liabilities         Debt:         Manufacturing operations         Senior Secured Term Loan Credit Facility, as Amended, due 2020— — 1,014 1,014 1,0238.25% Senior Notes, due 2022998 — — 998 1,1824.50% Senior Subordinated Convertible Notes, due 2018(A)— — 148 148 1864.75% Senior Subordinated Convertible Notes, due 2019(A)— — 289 289 379Debt of majority-owned dealerships— — 28 28 28Financing arrangements— — 17 17 43Loan Agreement related to 6.50% Tax Exempt Bonds, due 2040— 233 — 233 225Financed lease obligations— — 111 111 111Other— — 17 17 15Financial Services operations         Asset-backed debt issued by consolidated SPEs, at various rates, due serially through 2018— — 865 865 870Bank credit facilities, at fixed and variable rates, due dates from 2016 through 2020— — 1,048 1,048 1,063Commercial paper, at variable rates, program matures in 201786 — — 86 86Borrowings secured by operating and finance leases, at various rates, due serially through 2020— — 80 80 81_________________________(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 internally developed valuation techniques such as discounted cash flow modeling for Level 3 convertible notes which include 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, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities.
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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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