| **Condensed Consolidating Guarantor and Non-Guarantor Financial Information - Statement of Operations (Details) - USD ($) $ in Millions** | 3 Months Ended | 12 Months Ended |
|-------------------------------------------------------------------------------------------------------------------------------------------|----------------|-----------------|
||
| Sales and revenues, net                                                                                                                   | $ 2,488        | $ 2,538         | $ 2,693 | $ 2,421 | $ 3,008 | $ 2,844 | $ 2,746 | $ 2,208 | $ 10,140 | $ 10,806 | $ 10,775 |
| Costs of products sold                                                                                                                    |           |            |   |   |   |   |   |   | 8,670 | 9,534 | 9,761 |
| Restructuring charges                                                                                                                     |           |            |   |   |   |   |   |   | 76 | 42 | 25 |
| Asset impairment charges                                                                                                                  |           |            |   |   |   |   |   |   | 30 | 183 | 97 |
| All other operating expenses (income)                                                                                                     |           |            |   |   |   |   |   |   | 1,473 | 1,612 | 1,877 |
| Total costs and expenses                                                                                                                  |           |            |   |   |   |   |   |   | 10,249 | 11,371 | 11,760 |
| Equity in income of non-consolidated affiliates                                                                                           |           |            |   |   |   |   |   |   | 6 | 9 | 11 |
| Income (loss) before income taxes                                                                                                         |           |            |   |   |   |   |   |   | (103) | (556) | (974) |
| Income tax expense                                                                                                                        |           |            |   |   |   |   |   |   | (51) | (26) | 171 |
| Earnings (loss) from continuing operations                                                                                                | (51)           | (30)            | (64) | (42) | (72) | (3) | (298) | (249) | (154) | (582) | (803) |
| Income (loss) from discontinued operations, net of tax                                                                                    | 1              | 2               | 0 | 0 | 0 | 1 | 1 | 1 | 3 | 3 | (41) |
| Net income (loss)                                                                                                                         | $ (50)         | $ (28)          | $ (64) | $ (42) | $ (72) | $ (2) | $ (297) | $ (248) | (151) | (579) | (844) |
| Less: Net income attributable to non-controlling interests                                                                                |           |            |   |   |   |   |   |   | 33 | 40 | 54 |
| Net income (loss) attributable to Navistar International Corporation                                                                      |           |            |   |   |   |   |   |   | (184) | (619) | (898) |
| Parent Company [Member]                                                                                                                   |           |            |   |   |   |   |   |   |   |   |   |
| Sales and revenues, net                                                                                                                   |           |            |   |   |   |   |   |   | 0 | 0 | 0 |
| Costs of products sold                                                                                                                    |           |            |   |   |   |   |   |   | 0 | 0 | 0 |
| Restructuring charges                                                                                                                     |           |            |   |   |   |   |   |   | 0 | 0 | 0 |
| Asset impairment charges                                                                                                                  |           |            |   |   |   |   |   |   | 0 | 0 | 0 |
| All other operating expenses (income)                                                                                                     |           |            |   |   |   |   |   |   | 88 | (48) | (208) |
| Total costs and expenses                                                                                                                  |           |            |   |   |   |   |   |   | 88 | (48) | (208) |
| Equity in income of non-consolidated affiliates                                                                                           |           |            |   |   |   |   |   |   | (96) | (680) | (1,108) |
| Income (loss) before income taxes                                                                                                         |           |            |   |   |   |   |   |   | (184) | (632) | (900) |
| Income tax expense                                                                                                                        |           |            |   |   |   |   |   |   | 0 | 13 | 2 |
| Earnings (loss) from continuing operations                                                                                                |           |            |   |   |   |   |   |   | (184) | (619) | (898) |
| Income (loss) from discontinued operations, net of tax                                                                                    |           |            |   |   |   |   |   |   | 0 | 0 | 0 |
| Net income (loss)                                                                                                                         |           |            |   |   |   |   |   |   | (184) | (619) | (898) |
| Less: Net income attributable to non-controlling interests                                                                                |           |            |   |   |   |   |   |   | 0 | 0 | 0 |
| Net income (loss) attributable to Navistar International Corporation                                                                      |           |            |   |   |   |   |   |   | (184) | (619) | (898) |
| Guarantor Subsidiaries [Member]                                                                                                           |           |            |   |   |   |   |   |   |   |   |   |
| Sales and revenues, net                                                                                                                   |           |            |   |   |   |   |   |   | 7,267 | 7,269 | 6,426 |
| Costs of products sold                                                                                                                    |           |            |   |   |   |   |   |   | 6,614 | 6,794 | 6,629 |
| Restructuring charges                                                                                                                     |           |            |   |   |   |   |   |   | 50 | 8 | 15 |
| Asset impairment charges                                                                                                                  |           |            |   |   |   |   |   |   | 13 | 16 | 81 |
| All other operating expenses (income)                                                                                                     |           |            |   |   |   |   |   |   | 1,054 | 1,003 | 1,180 |
| Total costs and expenses                                                                                                                  |           |            |   |   |   |   |   |   | 7,731 | 7,821 | 7,905 |
| Equity in income of non-consolidated affiliates                                                                                           |           |            |   |   |   |   |   |   | 225 | (169) | 161 |
| Income (loss) before income taxes                                                                                                         |           |            |   |   |   |   |   |   | (239) | (721) | (1,318) |
| Income tax expense                                                                                                                        |           |            |   |   |   |   |   |   | 1 | 25 | 244 |
| Earnings (loss) from continuing operations                                                                                                |           |            |   |   |   |   |   |   | (238) | (696) | (1,074) |
| Income (loss) from discontinued operations, net of tax                                                                                    |           |            |   |   |   |   |   |   | 0 | 0 | 0 |
| Net income (loss)                                                                                                                         |           |            |   |   |   |   |   |   | (238) | (696) | (1,074) |
| Less: Net income attributable to non-controlling interests                                                                                |           |            |   |   |   |   |   |   | 0 | 0 | 0 |
| Net income (loss) attributable to Navistar International Corporation                                                                      |           |            |   |   |   |   |   |   | (238) | (696) | (1,074) |
| Non-Guarantor Subsidiaries [Member]                                                                                                       |           |            |   |   |   |   |   |   |   |   |   |
| Sales and revenues, net                                                                                                                   |           |            |   |   |   |   |   |   | 7,413 | 8,196 | 8,979 |
| Costs of products sold                                                                                                                    |           |            |   |   |   |   |   |   | 6,510 | 7,337 | 7,720 |
| Restructuring charges                                                                                                                     |           |            |   |   |   |   |   |   | 26 | 34 | 10 |
| Asset impairment charges                                                                                                                  |           |            |   |   |   |   |   |   | 17 | 167 | 16 |
| All other operating expenses (income)                                                                                                     |           |            |   |   |   |   |   |   | 399 | 541 | 659 |
| Total costs and expenses                                                                                                                  |           |            |   |   |   |   |   |   | 6,952 | 8,079 | 8,405 |
| Equity in income of non-consolidated affiliates                                                                                           |           |            |   |   |   |   |   |   | 2 | 5 | 4 |
| Income (loss) before income taxes                                                                                                         |           |            |   |   |   |   |   |   | 463 | 122 | 578 |
| Income tax expense                                                                                                                        |           |            |   |   |   |   |   |   | (52) | (64) | (75) |
| Earnings (loss) from continuing operations                                                                                                |           |            |   |   |   |   |   |   | 411 | 58 | 503 |
| Income (loss) from discontinued operations, net of tax                                                                                    |           |            |   |   |   |   |   |   | 3 | 3 | (41) |
| Net income (loss)                                                                                                                         |           |            |   |   |   |   |   |   | 414 | 61 | 462 |
| Less: Net income attributable to non-controlling interests                                                                                |           |            |   |   |   |   |   |   | 33 | 40 | 54 |
| Net income (loss) attributable to Navistar International Corporation                                                                      |           |            |   |   |   |   |   |   | 381 | 21 | 408 |
| Consolidation, Eliminations [Member]                                                                                                      |           |            |   |   |   |   |   |   |   |   |   |
| Sales and revenues, net                                                                                                                   |           |            |   |   |   |   |   |   | (4,540) | (4,659) | (4,630) |
| Costs of products sold                                                                                                                    |           |            |   |   |   |   |   |   | (4,454) | (4,597) | (4,588) |
| Restructuring charges                                                                                                                     |           |            |   |   |   |   |   |   | 0 | 0 | 0 |
| Asset impairment charges                                                                                                                  |           |            |   |   |   |   |   |   | 0 | 0 | 0 |
| All other operating expenses (income)                                                                                                     |           |            |   |   |   |   |   |   | (68) | 116 | 246 |
| Total costs and expenses                                                                                                                  |           |            |   |   |   |   |   |   | (4,522) | (4,481) | (4,342) |
| Equity in income of non-consolidated affiliates                                                                                           |           |            |   |   |   |   |   |   | (125) | 853 | 954 |
| Income (loss) before income taxes                                                                                                         |           |            |   |   |   |   |   |   | (143) | 675 | 666 |
| Income tax expense                                                                                                                        |           |            |   |   |   |   |   |   | 0 | 0 | 0 |
| Earnings (loss) from continuing operations                                                                                                |           |            |   |   |   |   |   |   | (143) | 675 | 666 |
| Income (loss) from discontinued operations, net of tax                                                                                    |           |            |   |   |   |   |   |   | 0 | 0 | 0 |
| Net income (loss)                                                                                                                         |           |            |   |   |   |   |   |   | (143) | 675 | 666 |
| Less: Net income attributable to non-controlling interests                                                                                |           |            |   |   |   |   |   |   | 0 | 0 | 0 |
| Net income (loss) attributable to Navistar International Corporation                                                                      |           |            |   |   |   |   |   |   | $ (143) | $ 675 | $ 666 |

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.
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Total costs related to goods produced and sold during the reporting period.
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Total costs of sales and operating expenses for the period.
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This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest.
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This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses and taxes from ongoing operations before extraordinary items, and noncontrolling interest.
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Amount of income (loss) from a disposal group, net of income tax before extraordinary items allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.
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| - Definition
This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.
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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.
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| - Definition
The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.
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Amount of Net Income (Loss) attributable to noncontrolling interest.
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The total amount of other operating cost and expense items that are associated with the entity's normal revenue producing operation.
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| - Definition
The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.
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