| **Debt**                       | 3 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
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| **Debt Disclosure [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
| Debt                           | Debt(in millions)January 31, 2014 October 31, 2013Manufacturing operations   Senior Secured Term Loan Credit Facility, as Amended, due 2017, net of unamortized discount of $4 for both periods$693 $6938.25% Senior Notes, due 2021, net of unamortized discount of $22 for both periods1,178 1,1783.00% Senior Subordinated Convertible Notes, due 2014, net of unamortized discount of $19 and $26, respectively551 5444.50% Senior Subordinated Convertible Notes, due 2018, net of unamortized discount of $22 and $23, respectively178 177Debt of majority-owned dealerships46 48Financing arrangements and capital lease obligations70 77Loan Agreement related to 6.5% Tax Exempt Bonds, due 2040225 225Promissory Note18 20Financed lease obligations219 218Other34 39Total Manufacturing operations debt3,212 3,219Less: Current portion662 658Net long-term Manufacturing operations debt$2,550 $2,561(in millions)January 31, 2014 October 31, 2013Financial Services operations   Asset-backed debt issued by consolidated SPEs, at fixed and variable rates, due serially through 2019$752 $778Bank revolvers, at fixed and variable rates, due dates from 2014 through 2019820 1,018Commercial paper, at variable rates, program matures in 201522 21Borrowings secured by operating and finance leases, at various rates, due serially through 201858 49Total Financial Services operations debt1,652 1,866Less: Current portion597 505Net long-term Financial Services operations debt$1,055 $1,361Financial Services OperationsIn November 2013, Navistar Financial, S.A. de C.V., SOFOM, E.N.R, our Mexican financial services affiliate ("NFM")expanded its facility of five-year notes secured by retail finance receivables by selling an additional P$800 million (the equivalent of US $60 million at January 31, 2014).In December 2013, International Truck Leasing Corporation, a special purpose, wholly-owned subsidiary of NFC, issued borrowings secured by operating and finance leases of $21 million. |

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| - Definition
The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20,22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682
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