| **Condensed Consolidating Guarantor and Non-Guarantor Financial Information** | 6 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           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| **Condensed Consolidating Guarantor and Non-Guarantor [Abstract]**            |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               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| Condensed Consolidating Guarantor and Non-guarantor Financial Information     | Consolidating Guarantor and Non-guarantor Financial InformationThe following tables set forth condensed consolidating balance sheets as of April 30, 2016 and October 31, 2015, and condensed consolidating statements of operations and comprehensive income (loss) for the three and six months ended April 30, 2016 and 2015, and condensed consolidating statements of cash flows for the six months ended April 30, 2016 and 2015.The information is presented as a result of Navistar, Inc.’s guarantee, exclusive of its subsidiaries, of NIC’s indebtedness under our 8.25% Senior Notes, due 2021, and obligations under our Loan Agreement related to the 6.5% Tax Exempt Bonds, due 2040. Navistar, Inc. is a direct wholly-owned subsidiary of NIC. None of NIC’s other subsidiaries guarantee any of these notes or bonds. The guarantees are "full and unconditional", as those terms are used in Regulation S-X Rule 3-10, except that the guarantees will be automatically released in certain customary circumstances, such as when the subsidiary is sold or all of the assets of the subsidiary are sold, the capital stock is sold, when the subsidiary is designated as an "unrestricted subsidiary" for purposes of the respective indentures for each of the 8.25% Senior Notes, due 2021, and the 6.5% Tax Exempt Bonds, due 2040, upon liquidation or dissolution of the subsidiary or upon legal or covenant defeasance, or satisfaction and discharge of the notes or bonds. Separate financial statements and other disclosures concerning Navistar, Inc. have not been presented because management believes that such information is not material to investors. Within this disclosure only, "NIC" includes the financial results of the parent company only, with all of its wholly-owned subsidiaries accounted for under the equity method. Likewise, "Navistar, Inc.," for purposes of this disclosure only, includes the consolidated financial results of its wholly-owned subsidiaries accounted for under the equity method and its operating units accounted for on a consolidated basis. "Non-Guarantor Subsidiaries" includes the combined financial results of all other non-guarantor subsidiaries. "Eliminations and Other" includes all eliminations and reclassifications to reconcile to the consolidated financial statements. NIC files a consolidated U.S. federal income tax return that includes Navistar, Inc. and its U.S. subsidiaries. Navistar, Inc. has a tax allocation agreement ("Tax Agreement") with NIC which requires Navistar, Inc. to compute its separate federal income tax liability and remit any resulting tax liability to NIC. Tax benefits that may arise from net operating losses of Navistar, Inc. are not refunded to Navistar, Inc. but may be used to offset future required tax payments under the Tax Agreement. The effect of the Tax Agreement is to allow NIC, the parent company, rather than Navistar, Inc., to utilize current U.S. taxable losses of Navistar, Inc. and all other direct or indirect subsidiaries of NIC.Condensed Consolidating Statement of Operations for the Three Months Ended April 30, 2016(in millions)NIC Navistar,Inc. Non-GuarantorSubsidiaries Eliminationsand Other ConsolidatedSales and revenues, net$— $1,702 $1,423 $(928) $2,197Costs of products sold— 1,548 1,208 (911) 1,845Restructuring charges— 3 — — 3Asset impairment charges— 2 1 — 3All other operating expenses (income)38 233 66 (18) 319Total costs and expenses38 1,786 1,275 (929) 2,170Equity in income (loss) of affiliates42 68 — (108) 2Income (loss) before income taxes4 (16) 148 (107) 29Income tax expense— (2) (14) — (16)Earnings (loss) from continuing operations4 (18) 134 (107) 13Income (loss) from discontinued operations, net of tax— — — — —Net income (loss)4 (18) 134 (107) 13Less: Net income attributable to non-controlling interests— — 9 — 9Net income (loss) attributable to Navistar International Corporation$4 $(18) $125 $(107) $4Condensed Consolidating Statement of Comprehensive Income (Loss) for the Three Months Ended April 30, 2016(in millions)NIC Navistar,Inc. Non-GuarantorSubsidiaries Eliminationsand Other ConsolidatedNet income (loss)$4 $(18) $134 $(107) $13Other comprehensive income (loss):         Foreign currency translation adjustment50 — 50 (50) 50Defined benefit plans (net of tax)15 31 (16) (15) 15Total other comprehensive income (loss)65 31 34 (65) 65Comprehensive income (loss)69 13 168 (172) 78Less: Net income attributable to non-controlling interests— — 9 — 9Total comprehensive income (loss) attributable to Navistar International Corporation$69 $13 $159 $(172) $69Condensed Consolidating Statement of Operations for the Six Months Ended April 30, 2016(in millions)NIC Navistar,Inc. Non-GuarantorSubsidiaries Eliminationsand Other ConsolidatedSales and revenues, net$— $3,044 $2,623 $(1,705) $3,962Costs of products sold— 2,752 2,231 (1,672) 3,311Restructuring charges— 4 2 — 6Asset impairment charges— 2 3 — 5All other operating expenses (income)57 446 174 (36) 641Total costs and expenses57 3,204 2,410 (1,708) 3,963Equity in income (loss) of affiliates28 55 (1) (81) 1Income (loss) before income taxes(29) (105) 212 (78) —Income tax benefit (expense) — 11 (22) — (11)Earnings (loss) from continuing operations(29) (94) 190 (78) (11)Income (loss) from discontinued operations, net of tax— — — — —Net income (loss)(29) (94) 190 (78) (11)Less: Net income attributable to non-controlling interests— — 18 — 18Net income (loss) attributable to Navistar International Corporation$(29) $(94) $172 $(78) $(29)Condensed Consolidating Statement of Comprehensive Income (Loss) for the Six Months Ended April 30, 2016(in millions)NIC Navistar,Inc. Non-GuarantorSubsidiaries Eliminationsand Other ConsolidatedNet income (loss)$(29) $(94) $190 $(78) $(11)Other comprehensive income (loss):         Foreign currency translation adjustment17 — 17 (17) 17Defined benefit plans (net of tax)48 63 (15) (48) 48Total other comprehensive income (loss)65 63 2 (65) 65Comprehensive income (loss)36 (31) 192 (143) 54Less: Net income attributable to non-controlling interests— — 18 — 18Total comprehensive income (loss) attributable to Navistar International Corporation$36 $(31) $174 $(143) $36Condensed Consolidating Balance Sheet as of April 30, 2016(in millions)NIC Navistar,Inc. Non-GuarantorSubsidiaries Eliminationsand Other ConsolidatedAssets         Cash and cash equivalents$228 $24 $337 $— $589Marketable securities47 — 181 — 228Restricted cash16 5 118 — 139Finance and other receivables, net3 101 2,145 (105) 2,144Inventories— 812 421 (13) 1,220Investments in non-consolidated affiliates(7,585) 6,215 63 1,373 66Property and equipment, net— 691 597 (7) 1,281Goodwill— — 38 — 38Deferred taxes, net— 15 149 — 164Other33 125 162 (1) 319Total assets$(7,258) $7,988 $4,211 $1,247 $6,188Liabilities and stockholders’ equity (deficit)         Debt$1,979 $1,141 $2,108 $(3) $5,225Postretirement benefits liabilities— 2,839 198 — 3,037Amounts due to (from) affiliates(7,820) 10,584 (2,936) 172 —Other liabilities3,711 1 (595) (70) 3,047Total liabilities(2,130) 14,565 (1,225) 99 11,309Stockholders’ equity attributable to non-controlling interest— — 7 — 7Stockholders’ equity (deficit) attributable to Navistar International Corporation(5,128) (6,577) 5,429 1,148 (5,128)Total liabilities and stockholders’ equity (deficit)$(7,258) $7,988 $4,211 $1,247 $6,188Condensed Consolidating Statement of Cash Flows for the Six Months Ended April 30, 2016(in millions)NIC Navistar,Inc. Non-GuarantorSubsidiaries Eliminationsand Other ConsolidatedNet cash provided by (used in) operations$(293) $(297) $218 $268 $(104)Cash flows from investment activities         Net change in restricted cash and cash equivalents— 2 (21) — (19)Net sales (purchases) of marketable securities65 — (134) — (69)Capital expenditures and purchase of equipment leased to others— (34) (97) — (131)Other investing activities— — 53 — 53Net cash provided by (used in) investing activities65 (32) (199) — (166)Cash flows from financing activities         Net borrowings (repayments) of debt— 259 (26) (298) (65)Other financing activities— 13 (49) 30 (6)Net cash provided by (used in) financing activities— 272 (75) (268) (71)Effect of exchange rate changes on cash and cash equivalents— — 18 — 18Decrease in cash and cash equivalents(228) (57) (38) — (323)Cash and cash equivalents at beginning of the period456 81 375 — 912Cash and cash equivalents at end of the period$228 $24 $337 $— $589Condensed Consolidating Statement of Operations for the Three Months Ended April 30, 2015(in millions)NICNavistar, Inc.Non-Guarantor SubsidiariesEliminations and OtherConsolidatedSales and revenues, net$—$2,009$1,943$(1,259)$2,693Costs of products sold—1,8641,735(1,239)2,360Restructuring charges——6—6Asset impairment charges—1——1All other operating expenses (income)2728279(22)366Total costs and expenses272,1471,820(1,261)2,733Equity in income (loss) of affiliates(37)64—(26)1Income (loss) before income taxes(64)(74)123(24)(39)Income tax expense—(1)(17)—(18)Earnings (loss) from continuing operations(64)(75)106(24)(57)Income (loss) from discontinued operations, net of tax—————Net income (loss)(64)(75)106(24)(57)Less: Net income attributable to non-controlling interests——7—7Net income (loss) attributable to Navistar International Corporation$(64)$(75)$99$(24)$(64)Condensed Consolidating Statement of Comprehensive Income (Loss) for the Three Months Ended April 30, 2015(in millions)NICNavistar, Inc.Non-Guarantor SubsidiariesEliminations and OtherConsolidatedNet income (loss)$(64) $(75) $106 $(24) $(57)Other comprehensive income (loss):Foreign currency translation adjustment(27)—(27)27(27)Defined benefit plans (net of tax)33312(33)33Total other comprehensive income (loss)631(25)(6)6Comprehensive income (loss)(58) (44) 81 (30) (51)Less: Net income attributable to non-controlling interests— — 7 — 7Total comprehensive income (loss) attributable to Navistar International Corporation$(58)$(44)$74$(30)$(58)Condensed Consolidating Statement of Operations for the Six Months Ended April 30, 2015(in millions)NIC Navistar, Inc. Non-Guarantor Subsidiaries Eliminations and Other ConsolidatedSales and revenues, net$— $3,619 $3,711 $(2,216) $5,114Costs of products sold— 3,273 3,305 (2,173) 4,405Restructuring charges— 3 6 — 9Asset impairment charges— 8 — — 8All other operating expenses (income)50 546 204 (40) 760Total costs and expenses50 3,830 3,515 (2,213) 5,182Equity in income (loss) of affiliates(56) 79 1 (21) 3Income (loss) before income taxes(106) (132) 197 (24) (65)Income tax expense— (2) (23) — (25)Earnings (loss) from continuing operations(106) (134) 174 (24) (90)Income (loss) from discontinued operations, net of tax— — — — —Net income (loss)(106) (134) 174 (24) (90)Less: Net income attributable to non-controlling interests— — 16 — 16Net income (loss) attributable to Navistar International Corporation$(106) $(134) $158 $(24) $(106)Condensed Consolidating Statement of Comprehensive Income (Loss) for the Six Months Ended April 30, 2015(in millions)NIC Navistar, Inc. Non-Guarantor Subsidiaries Eliminations and Other ConsolidatedNet income (loss)$(106) $(134) $174 $(24) $(90)Other comprehensive income (loss):    Foreign currency translation adjustment(86) — (86) 86 (86)Defined benefit plans (net of tax)65 62 3 (65) 65Total other comprehensive income (loss)(21) 62 (83) 21 (21)Comprehensive income (loss)(127) (72) 91 (3) (111)Less: Net income attributable to non-controlling interests— — 16 — 16Total comprehensive income (loss) attributable to Navistar International Corporation$(127) $(72) $75 $(3) $(127)Condensed Consolidating Balance Sheet as of October 31, 2015(in millions)NIC Navistar,Inc. Non-GuarantorSubsidiaries Eliminationsand Other ConsolidatedAssets         Cash and cash equivalents$456 $81 $375 $— $912Marketable securities112 — 47 — 159Restricted cash16 7 98 — 121Finance and other receivables, net1 99 2,440 (103) 2,437Inventories— 809 342 (16) 1,135Investments in non-consolidated affiliates(7,679) 6,204 64 1,477 66Property and equipment, net— 737 616 (8) 1,345Goodwill— — 38 — 38Deferred taxes, net7 20 137 — 164Other33 128 155 (1) 315Total assets$(7,054) $8,085 $4,312 $1,349 $6,692Liabilities and stockholders’ equity (deficit)         Debt$1,971 $1,180 $2,151 $(4) $5,298Postretirement benefits liabilities— 2,909 179 — 3,088Amounts due to (from) affiliates(7,574) 10,280 (2,879) 173 —Other liabilities3,716 207 (388) (69) 3,466Total liabilities(1,887) 14,576 (937) 100 11,852Stockholders’ equity attributable to non-controlling interest— — 7 — 7Stockholders’ equity (deficit) attributable to Navistar International Corporation(5,167) (6,491) 5,242 1,249 (5,167)Total liabilities and stockholders’ equity (deficit)$(7,054) $8,085 $4,312 $1,349 $6,692Condensed Consolidating Statement of Cash Flows for the Six Months Ended April 30, 2015(in millions)NIC Navistar,Inc. Non-GuarantorSubsidiaries Eliminationsand Other ConsolidatedNet cash provided by (used in) operations$(168) $41 $(188) $78 $(237)Cash flows from investment activities         Net change in restricted cash and cash equivalents1 (2) 54 — 53Net sales of marketable securities229 — 103 — 332Capital expenditures and purchase of equipment leased to others— (30) (35) — (65)Other investing activities— 7 5 — 12Net cash provided by (used in) investing activities230 (25) 127 — 332Cash flows from financing activities         Net borrowings (repayments) of debt— (52) 66 2 16Other financing activities— 20 61 (80) 1Net cash provided by (used in) financing activities— (32) 127 (78) 17Effect of exchange rate changes on cash and cash equivalents— — (26) — (26)Increase (decrease) in cash and cash equivalents62 (16) 40 — 86Cash and cash equivalents at beginning of the period101 53 343 — 497Cash and cash equivalents at end of the period$163 $37 $383 $— $583 |

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| - Definition
Condensed Consolidating Guarantor and Non-Guarantor [Abstract]
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No definition available.
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| - Definition
The entire disclosure for condensed financial statements.
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Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=64809438&loc=d3e5614-111684Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.10-01(a)) -URI http://asc.fasb.org/extlink&oid=27015980&loc=d3e46468-122699
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