| **Fair Value Measurements**           | 6 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  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| **Fair Value Disclosures [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                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| Fair value measurements               | Fair Value MeasurementsFor assets and liabilities measured at fair value on a recurring and nonrecurring basis, a three-level hierarchy of measurements based upon observable and unobservable inputs is used to arrive at fair value. Observable inputs are developed based on market data obtained from independent sources, while unobservable inputs reflect our assumptions about valuation based on the best information available in the circumstances. Depending on the inputs, we classify each fair value measurement as follows:•Level 1—based upon quoted prices for identical instruments in active markets,•Level 2—based upon quoted prices for similar instruments, prices for identical or similar instruments in markets that are not active, or model-derived valuations, all of whose significant inputs are observable, and•Level 3—based upon one or more significant unobservable inputs.The following section describes key inputs and assumptions in our valuation methodologies:Cash Equivalents and Restricted Cash Equivalents—We classify highly liquid investments, with an original maturity of 90 days or less, including U.S. Treasury bills, federal agency securities, and commercial paper, as cash equivalents. The carrying amounts of cash and cash equivalents and restricted cash approximate fair value because of the short-term maturity and highly liquid nature of these instruments.Marketable Securities—Our marketable securities portfolios are classified as available-for-sale and primarily include investments in U.S. government securities and commercial paper with an original maturity greater than 90 days. We use quoted prices from active markets to determine fair value.Derivative Assets and Liabilities—We measure the fair value of derivatives assuming that the unit of account is an individual derivative transaction and that each derivative could be sold or transferred on a stand-alone basis. We classify within Level 2 our derivatives that are traded over-the-counter and valued using internal models based on observable market inputs. In certain cases, market data is not available and we estimate inputs such as in situations where trading in a particular commodity is not active. Measurements based upon these unobservable inputs are classified within Level 3. For more information regarding derivatives, see Note 10, Financial Instruments and Commodity Contracts.Guarantees—We provide certain guarantees of payments and residual values to specific counterparties. Fair value of these guarantees is based upon internally developed models that utilize current market-based assumptions and historical data. We classify these liabilities within Level 3. For more information regarding guarantees, see Note 11, Commitments and Contingencies.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 $14_________________________(A)The asset value of commodity forward contracts and foreign currency contracts is included in other current assets as of April 30, 2016 and October 31, 2015 in the accompanying Consolidated Balance Sheets.(B)The liability value of commodity forward contracts and foreign currency contracts is included in other current liabilities as of April 30, 2016 and October 31, 2015 in the accompanying Consolidated Balance Sheets.The following table presents the changes for those financial instruments classified within Level 3 of the valuation hierarchy: Three Months Ended April 30, Six Months Ended April 30,(in millions)2016 2015 2016 2015Guarantees, at beginning of period$(10) $(8) $(10) $(8)Transfers out of Level 3— — — —Issuances(10) — (11) —Settlements1 1 2 1Guarantees, at end of period$(19) $(7) $(19) $(7)Change in unrealized gains on assets (liabilities) still held$— $— $— $—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.In addition to the methods and assumptions we use for the financial instruments recorded at fair value as discussed above, we use the following methods and assumptions to estimate the fair value for our other financial instruments that are not marked to market on a recurring basis. The carrying amounts of Cash and cash equivalents, Restricted cash, and Accounts payable approximate fair values because of the short-term maturity and highly liquid nature of these instruments. Finance receivables generally consist of retail and wholesale accounts and retail and wholesale notes. The carrying amounts of Trade and other receivables and retail and wholesale accounts approximate fair values as a result of the short-term nature of the receivables. The carrying amounts of wholesale notes approximate fair values as a result of the short-term nature of the wholesale notes and their variable interest rate terms. Due to the nature of the aforementioned financial instruments, they have been excluded from the fair value amounts presented in the table below.The fair values of our retail notes are estimated by discounting expected cash flows at estimated current market rates. The fair values of our retail notes are classified as Level 3 financial instruments.The fair values of our debt instruments classified as Level 1 were determined using quoted market prices. The 6.5% Tax Exempt Bonds, due 2040, are traded, but the trading market is illiquid, and as a result, the Loan Agreement underlying the Tax Exempt Bonds is classified as Level 2. The fair values of our Level 3 debt instruments are generally determined using internally developed valuation techniques such as discounted cash flow modeling. Inputs such as discount rates and credit spreads reflect our estimates of assumptions that market participants would use in pricing the instrument and may be unobservable.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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No definition available.
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| - Definition
The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.
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