| **Investments in Non-Consolidated Affiliates -  Anhui Jianghuai Navistar Diesel Engine Co., Ltd. ("JND") (Details) - USD ($) $ in Millions** | 12 Months Ended |
|----------------------------------------------------------------------------------------------------------------------------------------------|-----------------|
||
| **Schedule of Equity Method Investments [Line Items]**                                                                                       |            |   |   |
| Net revenue                                                                                                                                  | $ 584           | $ 554 | $ 527 |
| Net Loss                                                                                                                                     | 13              | 18 | $ 27 |
| Current assets                                                                                                                               | 300             | 240 |   |
| Noncurrent assets                                                                                                                            | 145             | 154 |   |
| Total assets                                                                                                                                 | 445             | 394 |   |
| Current liabilities                                                                                                                          | 251             | 195 |   |
| Noncurrent liabilities                                                                                                                       | 44              | 35 |   |
| Total liabilities                                                                                                                            | 295             | $ 230 |   |
| Anhui Jianghuai Navistar Diesel Engine Co., Ltd. (JND)                                                                                       |            |   |   |
| **Schedule of Equity Method Investments [Line Items]**                                                                                       |            |   |   |
| Net revenue                                                                                                                                  | 241             |   |   |
| Net expenses                                                                                                                                 | 252             |   |   |
| Loss before tax expense                                                                                                                      | (11)            |   |   |
| Net Loss                                                                                                                                     | (11)            |   |   |
| Current assets                                                                                                                               | 170             |   |   |
| Noncurrent assets                                                                                                                            | 141             |   |   |
| Total assets                                                                                                                                 | 311             |   |   |
| Current liabilities                                                                                                                          | 194             |   |   |
| Noncurrent liabilities                                                                                                                       | 43              |   |   |
| Total liabilities                                                                                                                            | $ 237           |   |   |

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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The amount of assets reported by an equity method investment of the entity.
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| - Definition
The amount of current assets reported by an equity method investment of the entity.
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| - Definition
The amount of current liabilities reported by an equity method investment of the entity.
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| - Definition
The amount of gross profit (loss) reported by an equity method investment of the entity.
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The amount of liabilities reported by an equity method investment of the entity.
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The amount of net income (loss) reported by an equity method investment of the entity.
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The amount of noncurrent assets reported by an equity method investment of the entity.
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The amount of noncurrent liabilities reported by an equity method investment of the entity.
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| - Definition
The amount of revenue from sale of goods and services reduced by sales returns, allowances, and discounts reported by an equity method investment of the entity.
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
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