| **Segment Reporting - Segment Reporting (Details) (USD $)In Millions, unless otherwise specified**                                                                                                                                                                                                                                                   | 3 Months Ended | 9 Months Ended |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|----------------|----------------|
||
| **Segment Reporting Information [Line Items]**                                                                                                                                                                                                                                                                                                       |           |                |   |  |   |  |   |  |
| Number Of Segments                                                                                                                                                                                                                                                                                                                                   |           |                |   |  | 4 |  |   |  |
| External sales and revenues, net                                                                                                                                                                                                                                                                                                                     | $ 2,844        |                | $ 2,861 |  | $ 7,798 |  | $ 8,024 |  |
| Intersegment sales and revenues                                                                                                                                                                                                                                                                                                                      | 0              |                | 0 |  | 0 |  | 0 |  |
| External sales and revenues, net                                                                                                                                                                                                                                                                                                                     | 2,844          |                | 2,861 |  | 7,798 |  | 8,024 |  |
| Sales and revenues, net                                                                                                                                                                                                                                                                                                                              | 2,844          |                | 2,861 |  | 7,798 |  | 8,024 |  |
| Net loss attributable to Navistar International Corporation                                                                                                                                                                                                                                                                                          | (2)            |                | (247) |  | (547) |  | (744) |  |
| Income (Loss) from Continuing Operations Attributable to Parent                                                                                                                                                                                                                                                                                      | (3)            |                | (237) |  | (550) |  | (704) |  |
| Income tax expense                                                                                                                                                                                                                                                                                                                                   | (14)           |                | (16) |  | (25) |  | (53) |  |
| Segment profit (loss)                                                                                                                                                                                                                                                                                                                                | 11             |                | (221) |  | (525) |  | (651) |  |
| Depreciation and amortization                                                                                                                                                                                                                                                                                                                        | 71             |                | 88 |  | 256 |  | 330 |  |
| Interest expense                                                                                                                                                                                                                                                                                                                                     | 78             |                | 76 |  | 234 |  | 240 |  |
| Equity in income (loss) of non-consolidated affiliates                                                                                                                                                                                                                                                                                               | 2              |                | 3 |  | 5 |  | 6 |  |
| Capital expenditures                                                                                                                                                                                                                                                                                                                                 | 7              | [1]            | 29 | [1] | 57 | [1] | 136 | [1] |
| NA Truck [Member]                                                                                                                                                                                                                                                                                                                                    |           |                |   |  |   |  |   |  |
| **Segment Reporting Information [Line Items]**                                                                                                                                                                                                                                                                                                       |           |                |   |  |   |  |   |  |
| External sales and revenues, net                                                                                                                                                                                                                                                                                                                     | 1,801          |                | 1,761 |  | 4,758 |  | 4,694 |  |
| Intersegment sales and revenues                                                                                                                                                                                                                                                                                                                      | 113            |                | 135 |  | 330 |  | 382 |  |
| External sales and revenues, net                                                                                                                                                                                                                                                                                                                     | 1,914          |                | 1,896 |  | 5,088 |  | 5,076 |  |
| Sales and revenues, net                                                                                                                                                                                                                                                                                                                              | 1,914          |                | 1,896 |  | 5,088 |  | 5,076 |  |
| Net loss attributable to Navistar International Corporation                                                                                                                                                                                                                                                                                          | (12)           |                | (143) |  | (353) |  | (547) |  |
| Income tax expense                                                                                                                                                                                                                                                                                                                                   | 0              |                | 0 |  | 0 |  | 0 |  |
| Segment profit (loss)                                                                                                                                                                                                                                                                                                                                | (12)           |                | (143) |  | (353) |  | (547) |  |
| Depreciation and amortization                                                                                                                                                                                                                                                                                                                        | 41             |                | 59 |  | 168 |  | 244 |  |
| Interest expense                                                                                                                                                                                                                                                                                                                                     | 0              |                | 0 |  | 0 |  | 0 |  |
| Equity in income (loss) of non-consolidated affiliates                                                                                                                                                                                                                                                                                               | 1              |                | 2 |  | 3 |  | 7 |  |
| Capital expenditures                                                                                                                                                                                                                                                                                                                                 | 4              | [1]            | 20 | [1] | 42 | [1] | 113 | [1] |
| NA Parts [Member]                                                                                                                                                                                                                                                                                                                                    |           |                |   |  |   |  |   |  |
| **Segment Reporting Information [Line Items]**                                                                                                                                                                                                                                                                                                       |           |                |   |  |   |  |   |  |
| Number Of Regional Parts Distribution Centers                                                                                                                                                                                                                                                                                                        | 11             |                |   |  | 11 |  |   |  |
| External sales and revenues, net                                                                                                                                                                                                                                                                                                                     | 610            |                | 583 |  | 1,818 |  | 1,873 |  |
| Intersegment sales and revenues                                                                                                                                                                                                                                                                                                                      | 11             |                | 13 |  | 33 |  | 45 |  |
| External sales and revenues, net                                                                                                                                                                                                                                                                                                                     | 621            |                | 596 |  | 1,851 |  | 1,918 |  |
| Sales and revenues, net                                                                                                                                                                                                                                                                                                                              | 621            |                | 596 |  | 1,851 |  | 1,918 |  |
| Net loss attributable to Navistar International Corporation                                                                                                                                                                                                                                                                                          | 127            |                | 98 |  | 357 |  | 329 |  |
| Income tax expense                                                                                                                                                                                                                                                                                                                                   | 0              |                | 0 |  | 0 |  | 0 |  |
| Segment profit (loss)                                                                                                                                                                                                                                                                                                                                | 127            |                | 98 |  | 357 |  | 329 |  |
| Depreciation and amortization                                                                                                                                                                                                                                                                                                                        | 4              |                | 5 |  | 12 |  | 13 |  |
| Interest expense                                                                                                                                                                                                                                                                                                                                     | 0              |                | 0 |  | 0 |  | 0 |  |
| Equity in income (loss) of non-consolidated affiliates                                                                                                                                                                                                                                                                                               | 1              |                | 1 |  | 3 |  | 4 |  |
| Capital expenditures                                                                                                                                                                                                                                                                                                                                 | 0              | [1]            | 1 | [1] | 5 | [1] | 2 | [1] |
| Global [Member]                                                                                                                                                                                                                                                                                                                                      |           |                |   |  |   |  |   |  |
| **Segment Reporting Information [Line Items]**                                                                                                                                                                                                                                                                                                       |           |                |   |  |   |  |   |  |
| External sales and revenues, net                                                                                                                                                                                                                                                                                                                     | 395            |                | 476 |  | 1,107 |  | 1,338 |  |
| Intersegment sales and revenues                                                                                                                                                                                                                                                                                                                      | 12             |                | 23 |  | 26 |  | 60 |  |
| External sales and revenues, net                                                                                                                                                                                                                                                                                                                     | 407            |                | 499 |  | 1,133 |  | 1,398 |  |
| Sales and revenues, net                                                                                                                                                                                                                                                                                                                              | 407            |                | 499 |  | 1,133 |  | 1,398 |  |
| Net loss attributable to Navistar International Corporation                                                                                                                                                                                                                                                                                          | (2)            |                | (22) |  | (185) |  | 0 |  |
| Income tax expense                                                                                                                                                                                                                                                                                                                                   | 0              |                | 0 |  | 0 |  | 0 |  |
| Segment profit (loss)                                                                                                                                                                                                                                                                                                                                | (2)            |                | (22) |  | (185) |  | 0 |  |
| Depreciation and amortization                                                                                                                                                                                                                                                                                                                        | 8              |                | 9 |  | 24 |  | 27 |  |
| Interest expense                                                                                                                                                                                                                                                                                                                                     | 0              |                | 0 |  | 0 |  | 0 |  |
| Equity in income (loss) of non-consolidated affiliates                                                                                                                                                                                                                                                                                               | 0              |                | 0 |  | (1) |  | (5) |  |
| Capital expenditures                                                                                                                                                                                                                                                                                                                                 | 2              | [1]            | 4 | [1] | 6 | [1] | 11 | [1] |
| Financial Services Operations [Member]                                                                                                                                                                                                                                                                                                               |           |                |   |  |   |  |   |  |
| **Segment Reporting Information [Line Items]**                                                                                                                                                                                                                                                                                                       |           |                |   |  |   |  |   |  |
| External sales and revenues, net                                                                                                                                                                                                                                                                                                                     | 38             | [2]            | 41 | [2] | 115 | [2] | 119 | [2] |
| Intersegment sales and revenues                                                                                                                                                                                                                                                                                                                      | 22             | [2]            | 20 | [2] | 57 | [2] | 59 | [2] |
| External sales and revenues, net                                                                                                                                                                                                                                                                                                                     | 60             | [2]            | 61 | [2] | 172 | [2] | 178 | [2] |
| Sales and revenues, net                                                                                                                                                                                                                                                                                                                              | 60             | [2]            | 61 | [2] | 172 | [2] | 178 | [2] |
| Net loss attributable to Navistar International Corporation                                                                                                                                                                                                                                                                                          | 24             | [2]            | 23 | [2] | 71 | [2] | 64 | [2] |
| Income tax expense                                                                                                                                                                                                                                                                                                                                   | 0              | [2]            | 0 | [2] | 0 | [2] | 0 | [2] |
| Segment profit (loss)                                                                                                                                                                                                                                                                                                                                | 24             | [2]            | 23 | [2] | 71 | [2] | 64 | [2] |
| Depreciation and amortization                                                                                                                                                                                                                                                                                                                        | 12             | [2]            | 10 | [2] | 33 | [2] | 29 | [2] |
| Interest expense                                                                                                                                                                                                                                                                                                                                     | 18             | [2]            | 17 | [2] | 52 | [2] | 52 | [2] |
| Equity in income (loss) of non-consolidated affiliates                                                                                                                                                                                                                                                                                               | 0              | [2]            | 0 | [2] | 0 | [2] | 0 | [2] |
| Capital expenditures                                                                                                                                                                                                                                                                                                                                 | 0              | [1],[2]        | 0 | [1],[2] | 1 | [1],[2] | 1 | [1],[2] |
| Interest revenues                                                                                                                                                                                                                                                                                                                                    | 44             |                | 47 |  | 126 |  | 140 |  |
| Corporate And Eliminations [Member]                                                                                                                                                                                                                                                                                                                  |           |                |   |  |   |  |   |  |
| **Segment Reporting Information [Line Items]**                                                                                                                                                                                                                                                                                                       |           |                |   |  |   |  |   |  |
| External sales and revenues, net                                                                                                                                                                                                                                                                                                                     | 0              |                | 0 |  | 0 |  | 0 |  |
| Intersegment sales and revenues                                                                                                                                                                                                                                                                                                                      | (158)          |                | (191) |  | (446) |  | (546) |  |
| External sales and revenues, net                                                                                                                                                                                                                                                                                                                     | (158)          |                | (191) |  | (446) |  | (546) |  |
| Sales and revenues, net                                                                                                                                                                                                                                                                                                                              | (158)          |                | (191) |  | (446) |  | (546) |  |
| Net loss attributable to Navistar International Corporation                                                                                                                                                                                                                                                                                          | (140)          |                | (193) |  | (440) |  | (550) |  |
| Income tax expense                                                                                                                                                                                                                                                                                                                                   | (14)           |                | (16) |  | (25) |  | (53) |  |
| Segment profit (loss)                                                                                                                                                                                                                                                                                                                                | (126)          |                | (177) |  | (415) |  | (497) |  |
| Depreciation and amortization                                                                                                                                                                                                                                                                                                                        | 6              |                | 5 |  | 19 |  | 17 |  |
| Interest expense                                                                                                                                                                                                                                                                                                                                     | 60             |                | 59 |  | 182 |  | 188 |  |
| Equity in income (loss) of non-consolidated affiliates                                                                                                                                                                                                                                                                                               | 0              |                | 0 |  | 0 |  | 0 |  |
| Capital expenditures                                                                                                                                                                                                                                                                                                                                 | $ 1            | [1]            | $ 4 | [1] | $ 3 | [1] | $ 9 | [1] |
|                                                                                                                                                                                                                                                                                                                                                      |
| [1]Exclusive of purchases of equipment leased to others.[2](A)Total sales and revenues in the Financial Services segment include interest revenues of $44 million and $126 million for the three and nine months ended July 31, 2014, respectively and $47 million and $140 million for the three and nine months ended July 31, 2013, respectively. |

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Number Of Regional Parts Distribution Centers
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Amount of profit or loss recognized by the reportable segment.
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| - Definition
The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of income (loss) from continuing operations attributable to the parent. Also defined as revenue less expenses and taxes from ongoing operations before extraordinary items but after deduction of those portions of income or loss from continuing operations that are allocable to noncontrolling interests.
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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
Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.
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| - Definition
Amount of the cost of borrowed funds accounted for as interest expense.
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| - Definition
Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.
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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
Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.
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| - Definition
Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).
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