| **Condensed Consolidating Guarantor and Non-Guarantor Financial Information Statement of Operations (Details) (USD $)In Millions, unless otherwise specified**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    | 3 Months Ended | 9 Months Ended | 12 Months Ended |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------|----------------|-----------------|
||
| **Condensed Financial Statements, Captions [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   |   |   |   |
| Sales and revenues, net                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | $ 4,323        | [1],[2]        | $ 3,537         | [2] | $ 3,355 |  | $ 2,743 |  | $ 3,372 | [1],[3] | $ 3,221 | [1] | $ 2,743 | [1] | $ 2,809 | [1] |   | $ 13,958 | $ 12,145 | $ 11,569 |
| Costs of products sold                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 11,262 | 9,741 | 9,366 |
| Restructuring charges                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 92 | (15) | 59 |
| Impairment of property and equipment and intangible assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | 0              | [1],[2]        | 64              | [2] |   |  |   |  | 0 | [1],[3] | 0 | [1] |   |  |   |  |   | 64 | 0 | 31 |
| All other operating expenses (income)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 2,149 | 2,079 | 1,800 |
| Total costs and expenses                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 13,567 | 11,805 | 11,256 |
| Equity in income (loss) of non-consolidated affiliates                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | (71) | (50) | 46 |
| Income (loss) before income tax and exraordinary gain                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 320 | 290 | 359 |
| Income tax benefit (expense)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 1,458 | (23) | (37) |
| Income (loss) before extraordinary gain                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 1,778 | 267 | 322 |
| Extraordinary gain, net of tax                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 0 | 0 | 23 |
| Net income (loss)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | 275            | [1],[2]        | 1,409           | [2] | 88 |  | 6 |  | 50 | [1],[3] | 129 | [1] | 56 | [1] | 32 | [1] | 345 | 1,778 | 267 | 345 |
| Less: Net income attributable to non-controlling interests                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | 20             | [1],[2]        | 9               | [2] | 14 |  | 12 |  | 6 | [1],[3] | 12 | [1] | 13 | [1] | 13 | [1] |   | 55 | 44 | 25 |
| Net income attributable to Navistar International Corporation                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | 255            | [1],[2],[4]    | 1,400           | [2],[4] | 74 | [4] | (6) | [4] | 44 | [1],[3],[4] | 117 | [1],[4] | 43 | [1],[4] | 19 | [1],[4] |   | 1,723 | 223 | 320 |
| Senior Notes [Member] | Manufacturing [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   |   |   |   |
| **Debt instrument:**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   |   |   |   |
| Stated interest rate                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | 8.25%          |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 8.25% |   |   |
| NIC [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   |   |   |   |
| **Condensed Financial Statements, Captions [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   |   |   |   |
| Sales and revenues, net                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 0 | 0 | 0 |
| Costs of products sold                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 0 | (1) | 6 |
| Restructuring charges                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 0 | 0 | 0 |
| Impairment of property and equipment and intangible assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 0 |   | 0 |
| All other operating expenses (income)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 79 | 61 | (7) |
| Total costs and expenses                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 79 | 60 | (1) |
| Equity in income (loss) of non-consolidated affiliates                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 1,759 | 283 | 320 |
| Income (loss) before income tax and exraordinary gain                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 1,680 | 223 | 321 |
| Income tax benefit (expense)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 43 | 0 | (1) |
| Income (loss) before extraordinary gain                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   |   |   | 320 |
| Extraordinary gain, net of tax                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   |   |   | 0 |
| Net income (loss)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 1,723 | 223 | 320 |
| Less: Net income attributable to non-controlling interests                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 0 | 0 | 0 |
| Net income attributable to Navistar International Corporation                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 1,723 | 223 | 320 |
| Navistar, Inc. [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   |   |   |   |
| **Condensed Financial Statements, Captions [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   |   |   |   |
| Sales and revenues, net                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 8,319 | 6,751 | 6,210 |
| Costs of products sold                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 7,775 | 6,303 | 5,859 |
| Restructuring charges                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 33 | (13) | 59 |
| Impairment of property and equipment and intangible assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 0 |   | (1) |
| All other operating expenses (income)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 1,263 | 1,349 | 1,139 |
| Total costs and expenses                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 9,071 | 7,639 | 7,056 |
| Equity in income (loss) of non-consolidated affiliates                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 462 | 895 | 983 |
| Income (loss) before income tax and exraordinary gain                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | (290) | 7 | 137 |
| Income tax benefit (expense)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 1,937 | 55 | 48 |
| Income (loss) before extraordinary gain                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   |   |   | 185 |
| Extraordinary gain, net of tax                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   |   |   | 0 |
| Net income (loss)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 1,647 | 62 | 185 |
| Less: Net income attributable to non-controlling interests                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 0 | 0 | 0 |
| Net income attributable to Navistar International Corporation                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 1,647 | 62 | 185 |
| Non-Guarantor Subsidiaries [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   |   |   |   |
| **Condensed Financial Statements, Captions [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   |   |   |   |
| Sales and revenues, net                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 13,202 | 11,278 | 11,013 |
| Costs of products sold                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 10,974 | 9,245 | 9,139 |
| Restructuring charges                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 59 | (2) | 0 |
| Impairment of property and equipment and intangible assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 64 |   | 32 |
| All other operating expenses (income)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 902 | 763 | 778 |
| Total costs and expenses                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 11,999 | 10,006 | 9,949 |
| Equity in income (loss) of non-consolidated affiliates                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | (37) | (17) | 51 |
| Income (loss) before income tax and exraordinary gain                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 1,166 | 1,255 | 1,115 |
| Income tax benefit (expense)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | (511) | (78) | (84) |
| Income (loss) before extraordinary gain                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   |   |   | 1,031 |
| Extraordinary gain, net of tax                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   |   |   | 23 |
| Net income (loss)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 655 | 1,177 | 1,054 |
| Less: Net income attributable to non-controlling interests                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 55 | 44 | 25 |
| Net income attributable to Navistar International Corporation                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 600 | 1,133 | 1,029 |
| Eliminations and Other [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   |   |   |   |
| **Condensed Financial Statements, Captions [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   |   |   |   |
| Sales and revenues, net                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | (7,563) | (5,884) | (5,654) |
| Costs of products sold                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | (7,487) | (5,806) | (5,638) |
| Restructuring charges                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 0 | 0 | 0 |
| Impairment of property and equipment and intangible assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 0 |   | 0 |
| All other operating expenses (income)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | (95) | (94) | (110) |
| Total costs and expenses                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | (7,582) | (5,900) | (5,748) |
| Equity in income (loss) of non-consolidated affiliates                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | (2,255) | (1,211) | (1,308) |
| Income (loss) before income tax and exraordinary gain                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | (2,236) | (1,195) | (1,214) |
| Income tax benefit (expense)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | (11) | 0 | 0 |
| Income (loss) before extraordinary gain                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   |   |   | (1,214) |
| Extraordinary gain, net of tax                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   |   |   | 0 |
| Net income (loss)                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | (2,247) | (1,195) | (1,214) |
| Less: Net income attributable to non-controlling interests                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | 0 | 0 | 0 |
| Net income attributable to Navistar International Corporation                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   | (2,247) | (1,195) | (1,214) |
| Correction Of Errors And Effect Of New Accounting Guidance Adoption [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   |   |   |   |
| **Condensed Financial Statements, Captions [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   |   |   |   |
| Restatement of Prior Year Income, Net of Tax                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |           |                |            |  |   |  |   |  |   |  |   |  |   |  |   |  |   |   | $ 10 | $ (29) |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
| [1]Starting with the first quarter of 2011, the Company changed its method of accruing for certain incentive compensation, specifically relating to cash bonuses, for interim reporting purposes from a ratable method to a performance-based method. The Company believes that the performance-based method is preferable because it links the accrual of incentive compensation with the achievement of performance. This change did not have an impact on our annual financial results. We have revised our previously reported Quarterly Condensed Consolidated Statements of Operations and Financial Data on a retrospective basis to reflect this change in principle based on information that would have been available as of our previous filing.[2]In the fourth quarter of 2011, certain out-of-period adjustments were recorded related to the partial release of the Company's income tax valuation allowance. The adjustments of approximately $61 million primarily related to the classification of a deferred tax item and resulted in the Company recognizing an additional income tax benefit. The Company should have recognized the income tax benefit for this amount in the third quarter of 2011 with the release of a portion of the Company's income tax valuation allowance. Correcting the error was not material to any of the related periods.[3]In the fourth quarter of 2010, we recorded out-of-period adjustments of $10 million. See Note 1, Summary of significant accounting policies.[4]We record adjustments to our product warranty accrual to reflect changes in our estimate of warranty costs for products sold in prior periods. Such adjustments typically occur when claims experience deviates from historic and expected trends. |

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All Other Operating Expenses
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| - Definition
Total costs related to goods produced and sold during the reporting period.
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| - Definition
Total costs of sales and operating expenses for the period.
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| - Definition
Interest rate stated in the contractual debt agreement.
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| - Definition
This element represents the gains or losses, after tax, arising from an event or transaction that is both unusual in nature and infrequent in occurrence when considered in relation to the environment in which the entity operates and which represents the parent's portion. This amount is the income statement amount which is allocable to the parent.
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Income or Loss from continuing operations, net of taxes, including net Income or Loss from discontinued operations but before extraordinary items.
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| - Definition
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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| - 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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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The sum of the current income tax expense or benefit and the deferred income tax expense or 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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| - Definition
The portion of net Income or Loss attributable to the noncontrolling interest (if any) deducted in order to derive the portion attributable to the parent.
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| - Definition
The charge against earnings resulting from the write down of long lived assets other than goodwill due to the difference between the carrying value and lower fair value.
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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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| - Definition
Resulting effect of restatement to correct an error, after tax effects, on the net income of prior periods for the year in which any adjustments are first made. In statements containing more than one period, discloses the effects for each period.
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| - Definition
Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.
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Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.
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