| **Condensed Consolidating Guarantor and Non-Guarantor Financial Information (Tables)** | 6 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                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| **Condensed Consolidating Guarantor and Non-Guarantor [Abstract]**                     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   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| Schedule of Condensed Income Statement [Table Text Block]                              | Condensed Consolidating Statement of Operations for the Three Months Ended April 30, 2015(in millions)NIC Navistar,Inc. Non-GuarantorSubsidiaries Eliminationsand Other ConsolidatedSales and revenues, net$— $2,009 $1,943 $(1,259) $2,693Costs of products sold— 1,864 1,735 (1,239) 2,360Restructuring charges— — 6 — 6Asset impairment charges— 1 — — 1All other operating expenses (income)27 282 79 (22) 366Total costs and expenses27 2,147 1,820 (1,261) 2,733Equity in income (loss) of affiliates(37) 64 — (26) 1Income (loss) before income taxes(64) (74) 123 (24) (39)Income tax expense— (1) (17) — (18)Earnings (loss) from continuing operations(64) (75) 106 (24) (57)Income from discontinued operations, net of tax— — — — —Net income (loss)(64) (75) 106 (24) (57)Less: Net income attributable to non-controlling interests— — 7 — 7Net income (loss) attributable to Navistar International Corporation$(64) $(75) $99 $(24) $(64)Condensed Consolidating Statement of Operations for the Three Months Ended April 30, 2014(in millions)NICNavistar, Inc.Non-Guarantor SubsidiariesEliminations and OtherConsolidatedSales and revenues, net$—$1,893$2,061$(1,208)$2,746Costs of products sold—1,7971,862(1,191)2,468Restructuring charges—8——8Asset impairment charges——153(2)151All other operating expenses (income)4127389(17)386Total costs and expenses412,0782,104(1,210)3,013Equity in income (loss) of affiliates(269)(141)24113Income (loss) before income taxes(310)(326)(41)413(264)Income tax benefit (expense)13(8)(28)—(23)Earnings (loss) from continuing operations(297)(334)(69)413(287)Income from discontinued operations, net of tax——1—1Net income (loss)(297)(334)(68)413(286)Less: Net income attributable to non-controlling interests——11—11Net income (loss) attributable to Navistar International Corporation$(297)$(334)$(79)$413$(297)Condensed Consolidating Statement of Operations for the Six Months Ended April 30, 2014(in millions)NIC Navistar, Inc. Non-Guarantor Subsidiaries Eliminations and Other ConsolidatedSales and revenues, net$— $3,317 $3,790 $(2,153) $4,954Costs of products sold— 3,222 3,393 (2,133) 4,482Restructuring charges— 10 1 — 11Asset impairment charges— — 171 (2) 169All other operating expenses (income)77 514 248 (28) 811Total costs and expenses77 3,746 3,813 (2,163) 5,473Equity in income (loss) of affiliates(481) (152) 1 635 3Income (loss) before income taxes(558) (581) (22) 645 (516)Income tax benefit (expense)13 (1) (23) — (11)Earnings (loss) from continuing operations(545) (582) (45) 645 (527)Income from discontinued operations, net of tax— — 2 — 2Net income (loss)(545) (582) (43) 645 (525)Less: Net income attributable to non-controlling interests— — 20 — 20Net income (loss) attributable to Navistar International Corporation$(545) $(582) $(63) $645 $(545)Condensed Consolidating Statement of Operations for the Six Months Ended April 30, 2015(in millions)NIC Navistar,Inc. Non-GuarantorSubsidiaries Eliminationsand Other ConsolidatedSales and revenues, net$— $3,619 $3,711 $(2,216) $5,114Costs of products sold— 3,273 3,305 (2,173) 4,405Restructuring charges— 3 6 — 9Asset impairment charges— 8 — — 8All other operating expenses (income)50 546 204 (40) 760Total costs and expenses50 3,830 3,515 (2,213) 5,182Equity in income (loss) of affiliates(56) 79 1 (21) 3Income (loss) before income taxes(106) (132) 197 (24) (65)Income tax expense — (2) (23) — (25)Earnings (loss) from continuing operations(106) (134) 174 (24) (90)Income from discontinued operations, net of tax— — — — —Net income (loss)(106) (134) 174 (24) (90)Less: Net income attributable to non-controlling interests— — 16 — 16Net income (loss) attributable to Navistar International Corporation$(106) $(134) $158 $(24) $(106) |
| Schedule of Condensed Statement of Comprehensive Income [Table Text Block]             | Condensed Consolidating Statement of Comprehensive Income (Loss) for the Six Months Ended April 30, 2014(in millions)NIC Navistar, Inc. Non-Guarantor Subsidiaries Eliminations and Other ConsolidatedNet income (loss) attributable to Navistar International Corporation$(545) $(582) $(63) $645 $(545)Other comprehensive income (loss):    Foreign currency translation adjustment(14) — (14) 14 (14)Defined benefit plans (net of tax of  $(1) $0, $(1), $1, and $(1), respectively)50 50 — (50) 50Total other comprehensive income (loss)36 50 (14) (36) 36Total comprehensive income (loss) attributable to Navistar International Corporation$(509) $(532) $(77) $609 $(509)Condensed Consolidating Statement of Comprehensive Income (Loss) for the Three Months Ended April 30, 2015(in millions)NICNavistar,Inc.Non-GuarantorSubsidiariesEliminationsand OtherConsolidatedNet income (loss) attributable to Navistar International Corporation$(64)$(75)$99$(24)$(64)Other comprehensive income (loss):Foreign currency translation adjustment(27)—(27)27(27)Defined benefit plans (net of tax of $(0), for all entities)33312(33)33Total other comprehensive income (loss)631(25)(6)6Total comprehensive income (loss) attributable to Navistar International Corporation$(58)$(44)$74$(30)$(58)Condensed Consolidating Statement of Comprehensive Income (Loss) for the Three Months Ended April 30, 2014(in millions)NICNavistar, Inc.Non-Guarantor SubsidiariesEliminations and OtherConsolidatedNet income (loss) attributable to Navistar International Corporation$(297)$(334)$(79)$413$(297)Other comprehensive income (loss):Foreign currency translation adjustment48—48(48)48Defined benefit plans (net of tax of $0, for all entities)2525—(25)25Total other comprehensive income (loss)732548(73)73Total comprehensive income (loss) attributable to Navistar International Corporation$(224)$(309)$(31)$340$(224)Condensed Consolidating Statement of Comprehensive Income (Loss) for the Six Months Ended April 30, 2015(in millions)NIC Navistar,Inc. Non-GuarantorSubsidiaries Eliminationsand Other ConsolidatedNet income (loss) attributable to Navistar International Corporation$(106) $(134) $158 $(24) $(106)Other comprehensive income (loss):         Foreign currency translation adjustment(86) — (86) 86 (86)Defined benefit plans (net of tax of  $(1), $(0), $(1), $1, and $(1), respectively)65 62 3 (65) 65Total other comprehensive income (loss)(21) 62 (83) 21 (21)Total comprehensive income (loss) attributable to Navistar International Corporation$(127) $(72) $75 $(3) $(127)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
| Schedule of Condensed Balance Sheet [Table Text Block]                                 | Condensed Consolidating Balance Sheet as of April 30, 2015(in millions)NIC Navistar,Inc. Non-GuarantorSubsidiaries Eliminationsand Other ConsolidatedAssets         Cash and cash equivalents$163 $37 $383 $— $583Marketable securities150 — 123 — 273Restricted cash17 6 90 — 113Finance and other receivables, net3 132 2,558 (19) 2,674Inventories— 785 475 (15) 1,245Investments in non-consolidated affiliates(7,322) 6,495 65 830 68Property and equipment, net— 768 646 (7) 1,407Goodwill— — 38 — 38Deferred taxes, net5 9 158 — 172Other32 141 179 — 352Total assets$(6,952) $8,373 $4,715 $789 $6,925Liabilities and stockholders’ equity (deficit)         Debt$1,965 $887 $2,357 $(6) $5,203Postretirement benefits liabilities— 2,639 227 — 2,866Amounts due to (from) affiliates(7,749) 11,963 (4,352) 138 —Other liabilities3,606 249 (182) (73) 3,600Total liabilities(2,178) 15,738 (1,950) 59 11,669Redeemable equity securities1 — — — 1Stockholders’ equity attributable to non-controlling interest— — 30 — 30Stockholders’ equity (deficit) attributable to Navistar International Corporation(4,775) (7,365) 6,635 730 (4,775)Total liabilities and stockholders’ equity (deficit)$(6,952) $8,373 $4,715 $789 $6,925Condensed Consolidating Balance Sheet as of October 31, 2014(in millions)NIC Navistar,Inc. Non-GuarantorSubsidiaries Eliminationsand Other ConsolidatedAssets         Cash and cash equivalents$101 $53 $343 $— $497Marketable securities379 — 226 — 605Restricted cash19 4 148 — 171Finance and other receivables, net— 124 2,504 (12) 2,616Inventories— 792 539 (12) 1,319Investments in non-consolidated affiliates(7,245) 6,410 71 837 73Property and equipment, net— 827 740 (5) 1,562Goodwill— — 38 — 38Deferred taxes, net5 9 185 1 200Other34 137 194 (3) 362Total assets$(6,707) $8,356 $4,988 $806 $7,443Liabilities and stockholders’ equity (deficit)         Debt$1,958 $937 $2,336 $(7) $5,224Postretirement benefits liabilities— 2,712 243 — 2,955Amounts due to (from) affiliates(7,618) 11,739 (4,267) 146 —Other liabilities3,605 370 (22) (71) 3,882Total liabilities(2,055) 15,758 (1,710) 68 12,061Redeemable equity securities2 — — — 2Stockholders’ equity attributable to non-controlling interest— — 34 — 34Stockholders’ equity (deficit) attributable to Navistar International Corporation(4,654) (7,402) 6,664 738 (4,654)Total liabilities and stockholders’ equity (deficit)$(6,707) $8,356 $4,988 $806 $7,443                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
| Schedule of Condensed Cash Flow Statement [Table Text Block]                           | Condensed Consolidating Statement of Cash Flows for the Six Months Ended April 30, 2015(in millions)NIC Navistar,Inc. Non-GuarantorSubsidiaries Eliminationsand Other ConsolidatedNet cash provided by (used in) operations$(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) investment 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 $— $583Condensed Consolidating Statement of Cash Flows for the Six Months Ended April 30, 2014(in millions)NIC Navistar,Inc. Non-GuarantorSubsidiaries Eliminationsand Other ConsolidatedNet cash provided by (used in) operations$(458) $(961) $85 $1,008 $(326)Cash flows from investment activities         Net change in restricted cash and cash equivalents5 (1) (25) — (21)Net sales of marketable securities389 — (93) — 296Capital expenditures and purchase of equipment leased to others— (67) (91) — (158)Other investing activities— 8 17 — 25Net cash provided by (used in) investment activities394 (60) (192) — 142Cash flows from financing activities         Net borrowings (repayments) of debt(10) 959 68 (1,006) 11Other financing activities18 34 (30) — 22Net cash provided by (used in) financing activities8 993 38 (1,006) 33Effect of exchange rate changes on cash and cash equivalents— — (8) (2) (10)Decrease in cash and cash equivalents(56) (28) (77) — (161)Cash and cash equivalents at beginning of the period336 72 347 — 755Cash and cash equivalents at end of the period$280 $44 $270 $— $594                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |

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