| **Segment Reporting - Segment Assets (Details) (USD $)In Millions, unless otherwise specified**                                                                                        | 12 Months Ended |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------|
||
| **Segment Reporting Information [Line Items]**                                                                                                                                         |            |   |  |   |
| Segment Assets                                                                                                                                                                         | $ 8,315         | $ 9,102 |  | $ 12,291 |
| NA Truck [Member]                                                                                                                                                                      |            |   |  |   |
| **Segment Reporting Information [Line Items]**                                                                                                                                         |            |   |  |   |
| Segment Assets                                                                                                                                                                         | 2,250           | 2,481 | [1] | 2,828 |
| NA Parts [Member]                                                                                                                                                                      |            |   |  |   |
| **Segment Reporting Information [Line Items]**                                                                                                                                         |            |   |  |   |
| Segment Assets                                                                                                                                                                         | 716             | 782 |  | 804 |
| Global [Member]                                                                                                                                                                        |            |   |  |   |
| **Segment Reporting Information [Line Items]**                                                                                                                                         |            |   |  |   |
| Segment Assets                                                                                                                                                                         | 1,162           | 1,333 |  | 1,657 |
| Financial Services Operations [Member]                                                                                                                                                 |            |   |  |   |
| **Segment Reporting Information [Line Items]**                                                                                                                                         |            |   |  |   |
| Segment Assets                                                                                                                                                                         | 2,355           | 2,563 |  | 3,580 |
| Interest revenues                                                                                                                                                                      | 181             | 254 |  | 285 |
| Corporate And Eliminations [Member]                                                                                                                                                    |            |   |  |   |
| **Segment Reporting Information [Line Items]**                                                                                                                                         |            |   |  |   |
| Segment Assets                                                                                                                                                                         | $ 1,832         | $ 1,943 |  | $ 3,422 |
|                                                                                                                                                                                        |
| [1](C)The segment assets as of October 31, 2012 includes amounts related to discontinued operations. For more information, see Note 2, Discontinued Operations and Other Divestitures. |

| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.18) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5
+ Details**Name:**us-gaap_Assets**Namespace Prefix:**us-gaap_**Data Type:**xbrli:monetaryItemType**Balance Type:**debit**Period Type:**instant |
| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Article 5Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.7(b)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688
+ Details**Name:**us-gaap_InvestmentIncomeInterest**Namespace Prefix:**us-gaap_**Data Type:**xbrli:monetaryItemType**Balance Type:**credit**Period Type:**duration |
| X                                                                                                                                                                        |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Details**Name:**us-gaap_SegmentReportingInformationLineItems**Namespace Prefix:**us-gaap_**Data Type:**xbrli:stringItemType**Balance Type:**na**Period Type:**duration |