| **Restructuring and Impairments**                   | 9 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  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| **Restructuring and Related Activities [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  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| Restructurings and Impairments                      | Restructurings and ImpairmentsRestructuring charges recorded are 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. In the three and nine months ended July 31, 2013, the Company recognized restructuring charges of $6 million and $14 million, respectively, compared to $4 million and $23 million in the three and nine months ended July 31, 2012.Cost-Reductions and Other Strategic InitiativesIn the fourth quarter of 2012, we announced actions to control spending across the Company with targeted reductions of certain costs. In addition to the expected integration synergies resulting from ongoing efforts to consolidate our truck and engine engineering operations, as well as the relocation of our world headquarters to Lisle, Illinois, we are focusing on continued reductions in discretionary spending, including but not limited to reductions from efficiencies, and prioritizing or eliminating certain programs or projects. We continue to evaluate options to improve the efficiency and performance of our operations. Our focus is on improving our core North American Manufacturing operations performance. We are evaluating opportunities to restructure our business and rationalize our Manufacturing operations in an effort to optimize our cost structure, which could include, among other actions, additional rationalization of our Manufacturing operations and/or divesting of non-core businesses. We expect these actions will result in additional restructuring and other related charges during 2013, 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 pension curtailments. These charges could be significant.In the third quarter of 2013, the Company recorded asset impairment charges of $17 million, of which $13 million was recognized by the Truck segment and $4 million was recognized by the Engine segment. These charges are the result of our ongoing evaluation of our portfolio of assets to validate their strategic and financial fit, which led to the discontinuation of certain engineering programs related to products that were determined to be outside of our core operations or not performing to our expectations.Voluntary separation program and reduction in force In the fourth quarter of 2012, the Company offered the majority of our U.S.-based non-represented salaried employees the opportunity to apply for a voluntary separation program ("VSP"). Along with the employees who chose to participate in the VSP, we used attrition and an involuntary reduction in force to eliminate additional positions in order to meet our targeted reductions goal. In addition to these actions in the U.S., our Brazilian operations utilized an involuntary reduction in force to eliminate positions. As a result of these actions and charges related to the elimination of certain executive positions, the Company recognized restructuring charges of $73 million in the fourth quarter of 2012. The restructuring charges consisted of $66 million in personnel costs for employee termination and related benefits and $7 million of charges for pension and other postretirement contractual termination benefits. The Company expects the restructuring charges, excluding other postretirement costs, will be paid throughout the year.Engineering IntegrationIn 2011, the Company committed to a plan and finalized the purchase of the property and buildings to consolidate its truck and engine engineering operations, as well as the relocation of our world headquarters. The Company is utilizing proceeds from an October 2010 loan agreement related to tax exempt bonds (the "Tax Exempt Bonds") to finance the relocation of the Company’s world headquarters and engineering center, the expansion of an existing warehouse facility, and the development of certain industrial facilities to assist with the consolidation of certain operations (the "Loan Agreement").In the second quarter of 2012, the Company vacated the premises of its former world headquarters in Warrenville, Illinois and recorded a charge of $16 million, consisting of $19 million for the recognition of the fair value of the lease vacancy obligation, partially offset by $3 million for the reversal of deferred rent expense. This charge was recorded in Corporate and recognized in Restructuring charges. The cash payments associated with the lease vacancy obligation are expected to be completed by the end of 2016.North American Manufacturing Restructuring Activities and Impairments of Intangible AssetsThe Company continues to evaluate opportunities to restructure and rationalize its Manufacturing operations in an effort to optimize the cost structure. In the third quarter of 2011, the Company committed to plans for the restructuring of certain North American Manufacturing operations, including the closure of its Chatham, Ontario heavy truck plant and actions related to WCC and Monaco (collectively "Custom Products"). In the fourth quarter of 2012, the Company committed to plans for the closure of its Garland, Texas truck manufacturing operations (the "Garland Facility"). In the second quarter of 2013, the Company reached an agreement to sublease a portion of its manufacturing facility in Cherokee, Alabama (the “Cherokee Facility”).Chatham restructuring activitiesIn the third quarter of 2011, the Company committed to close its Chatham, Ontario heavy truck plant, which had been idled since June 2009. We anticipate additional charges of $20 million to $70 million in future periods, primarily related to pension and postretirement costs and termination benefits, which are subject to employee negotiation and acceptance rates. We expect the previous restructuring charges, excluding pension and other postretirement costs, will be paid over the next year.Custom Products restructuring activities and impairment of intangible assetsIn the third quarter of 2011, the Company committed to a restructuring plan of Custom Products, including the closure of the Union City, Indiana chassis facility and the wind-down and transfer of certain operations at the Monaco RV motor coach plant in Coburg, Oregon. In the second quarter of 2012, the Company decided to discontinue accepting orders and idle the WCC operations. In the first quarter of 2013, the Company completed the idling of the WCC operations and in the second quarter of 2013, it divested WCC for an immaterial amount.In the second quarter of 2012, as a result of the decision to idle the WCC operations, the WCC asset group was reviewed for recoverability and determined not to be recoverable. We determined that the remaining intangible asset balances were fully impaired, and the Company recognized asset impairment charges of $28 million in Loss from discontinued operations, net of tax. In addition, the Parts segment recognized a charge of $10 million for the impairment of certain intangible assets of the parts distribution operations related to the WCC business.Beginning in the first quarter of 2013, the Company began reporting the operating results of WCC and certain operating results of Monaco as discontinued operations in the Company's Consolidated statements of operations. In March 2013, we completed the divestiture of the WCC business. In May 2013, we divested substantially all of our interest in these operations of Monaco. For more information, see Note 2, Discontinued Operations and Other Divestitures.Garland Facility closureIn the fourth quarter of 2012, the Company committed to plans for the closure of the Garland Facility, which resulted in our Truck segment recognizing restructuring charges of $4 million for personnel costs related to employee terminations and related benefits. Beginning in early 2013, the Company began transitioning production from the Garland Facility to other North America operations that produce similar models. In the second quarter of 2013, production at the Garland Facility ceased. During 2013, we recognized $22 million of charges related to the planned closure, primarily from accelerated depreciation of certain assets related to the facility. We anticipate recognizing approximately $10 million of other related charges in the remainder 2013. We expect the restructuring charges relating to employee separation benefits will be paid during 2013.Alabama Facility SubleaseIn January 2012, the Company began leasing the Cherokee Facility and purchased certain machinery and equipment within the facility. In the second quarter of 2013, we signed an agreement to sublease a portion of the Cherokee Facility. The term of the sublease agreement runs through the remaining term of our operating lease, which ends in 2021.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, 2012 Additions Payments Adjustments Balance at      July 31, 2013Employee termination charges$72 $3 $(54) $(5) $16Employee relocation costs— 3 (3) — —Lease vacancy17 6 (6) 2 19Other— 5 (4) — 1Restructuring liability$89 $17 $(67) $(3) $36(in millions)Balance atOctober 31, 2011 Additions Payments Adjustments Balance at       July 31, 2012Employee termination charges$31 $2 $(8) $(4) $21Employee relocation costs— 6 (6) — —Lease vacancy— 19 (2) 1 18Other8 2 (7) (1) 2Restructuring liability$39 $29 $(23) $(4) $41 |

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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
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 146 -Paragraph 20 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4) -URI http://asc.fasb.org/extlink&oid=6394695&loc=d3e140904-122747Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=6394695&loc=d3e140864-122747Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869
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