| **Restructuring and Impairments**                   | 6 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |
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| **Restructuring and Related Activities [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
| Restructurings and Impairments                      | Restructurings and ImpairmentsRestructuring charges are recorded based on restructuring plans that have been committed to by management and are, in part, based upon management's best estimates of future events. Changes to the estimates may require future adjustments to the restructuring liabilities. Restructuring LiabilityThe following tables summarize the activity in the restructuring liability, which includes amounts related to discontinued operations and excludes pension and other postretirement contractual termination benefits:(in millions)Balance at October 31, 2015 Additions Payments Adjustments Balance at April 30, 2016Employee termination charges$62 $6 $(49) $— $19Lease vacancy5 — (3) — 2Other1 — — — 1Restructuring liability$68 $6 $(52) $— $22(in millions)Balance atOctober 31, 2014 Additions Payments Adjustments Balance at April 30, 2015Employee termination charges$8 $7 $(4) $(1) $10Lease vacancy11 — (4) — 7Other1 — — — 1Restructuring liability$20 $7 $(8) $(1) $18North American Manufacturing Restructuring ActivitiesWe continue to focus on our core Truck and Parts businesses and evaluate our portfolio of assets to validate their strategic and financial fit. This allows us to close or divest non-core/non-strategic businesses, and identify opportunities to restructure our business and rationalize our Manufacturing operations in an effort to optimize our cost structure. For those areas that fall outside our core businesses, we are evaluating alternatives which could result in additional restructuring and other related charges in the future, including but not limited to: (i) impairments, (ii) costs for employee and contractor termination and other related benefits, and (iii) charges for pension and other postretirement contractual benefits and curtailments. These charges could be significant.Chatham restructuring activitiesIn the third quarter of 2011, we committed to close our Chatham, Ontario heavy truck plant, which had been idled since June 2009.  At that time, we recognized curtailment and contractual termination charges related to postretirement plans.  Based on a ruling regarding pension benefits received from the Financial Services Tribunal in Ontario, Canada, in the third quarter of 2014, we recognized additional charges of $14 million related to the 2011 closure of the Chatham, Ontario plant.  We appealed this ruling, but it was upheld in a July 3, 2015 decision issued by the Divisional Court of Ontario.  On July 23, 2015, we filed a notice of motion for leave to appeal to the Court of Appeal for Ontario, which was perfected on August 25, 2015 through an additional filing.  On December 21, 2015, the Ontario Court of Appeal denied the motion for leave to appeal. On April 25, 2016, we filed a qualified partial wind-up report for approval by the Financial Services Commission of Ontario. Potential charges in future periods could range from $0 million to $60 million, primarily related to pension, postretirement costs and termination benefits, which are subject to governmental approval, employee negotiation, acceptance rates and the resolution of disputes related thereto. In addition, we are evaluating the impact of the ruling on prior plan administration practices and it is probable that additional charges will be recognized, but those charges are currently not estimable.Foundry FacilitiesIn December 2014, we announced the closure of our Indianapolis, Indiana foundry facility and on June 30, 2015, we closed this foundry.  In addition, on April 30, 2015, we sold our Waukesha, Wisconsin foundry operations. As a result, the Truck segment recognized charges of $13 million and $12 million in the first and second quarter of 2015, respectively, for the acceleration of depreciation of certain assets related to foundry and engine facilities. These charges are reported within Costs of products sold in our Consolidated Statements of Operations.Asset Impairments In the six months ended April 30, 2016, we recorded $5 million of Asset impairment charges in our Consolidated Statements of Operations, primarily due to $3 million of asset impairment charges recorded in the Truck segment related to the sale of Pure Power Technologies ("PPT"), a components business focused on air and fuel systems, in February 2016. In the six months ended April 30, 2015, we recorded $8 million of Asset impairment charges in our Consolidated Statements of Operations, primarily due to $7 million of asset impairment charges recorded in the Truck segment in the first quarter of 2015, resulting from a triggering event related to certain equipment leased to others. |

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| - References
No definition available.
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| - Definition
The entire disclosure for restructuring and related activities. Description of restructuring activities such as exit and disposal activities, include facts and circumstances leading to the plan, the expected plan completion date, the major types of costs associated with the plan activities, total expected costs, the accrual balance at the end of the period, and the periods over which the remaining accrual will be settled.
+ References
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