| **Commitments and Contingencies - Narrative (Details) BRL in Millions**                                                                                                                                   |              |             |          | 1 Months Ended | 3 Months Ended  | 6 Months Ended |         |        |                 |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------|-------------|----------|----------------|-----------------|----------------|---------|--------|-----------------|
||
| **Loss Contingencies [Line Items]**                                                                                                                                                                       |         |        |     |           |            |           |    |   |            |   |   |   |
| Available stand-by letters of credit and surety bonds                                                                                                                                                     |         |        |     |           | $ 91,000,000    |           |    |   | $ 91,000,000    |   |   |   |
| Line of Credit Facility, Current Borrowing Capacity                                                                                                                                                       |         |        |     |           | 12,000,000      |           |    |   | 12,000,000      |   |   |   |
| Line of Credit Facility, Remaining Borrowing Capacity                                                                                                                                                     |         |        |     |           | 8,000,000       |           |    |   | 8,000,000       |   |   |   |
| Purchase commitments                                                                                                                                                                                      |         |        |     |           | 15,000,000      |           |    |   | $ 15,000,000    |   |   |   |
| Long Term Purchase Commitment Cancellation Fees                                                                                                                                                           |         |        |     |           | $ 60,000,000    |           |    |   |            |   |   |   |
| Number of Contaminated Sites | site                                                                                                                                                                       |         |        |     |           | 2               |           |    |   | 2               | 2 |   |   |
| Number of Contaminated Sites in Sao Paulo, Brazil | site                                                                                                                                                  |         |        |     |           | 2               |           |    |   | 2               | 2 |   |   |
| Accrual for environmental loss contingencies                                                                                                                                                              |         |        |     |           | $ 20,000,000    |           |    |   | $ 20,000,000    |   |   |   |
| Sao Paulo Groundwater Notice [Member] | Sanctions [Member]                                                                                                                                                |         |        |     |           |            |           |    |   |            |   |   |   |
| **Loss Contingencies [Line Items]**                                                                                                                                                                       |         |        |     |           |            |           |    |   |            |   |   |   |
| Damages sought, value                                                                                                                                                                                     |         |        |     | BRL 3          | 1,000,000       |           |    |   |            |   |   |   |
| International Chamber of Commerce [Member] | Penalties and Interest [Member]                                                                                                                              |         |        |     |           |            |           |    |   |            |   |   |   |
| **Loss Contingencies [Line Items]**                                                                                                                                                                       |         |        |     |           |            |           |    |   |            |   |   |   |
| Damages sought, value                                                                                                                                                                                     |         |        |     |           | 18,000,000      |           |    |   |            |   |   |   |
| Navitrucks [Member] | Alleged Unfulfilled Promises and Injury to Reputation [Member]                                                                                                                      |         |        |     |           |            |           |    |   |            |   |   |   |
| **Loss Contingencies [Line Items]**                                                                                                                                                                       |         |        |     |           |            |           |    |   |            |   |   |   |
| Damages sought, value                                                                                                                                                                                     |         |        |     |           | $ 37,000,000    |           |    |   |            |   |   |   |
| Damages from Product Defects [Member]                                                                                                                                                                     |         |        |     |           |            |           |    |   |            |   |   |   |
| **Loss Contingencies [Line Items]**                                                                                                                                                                       |         |        |     |           |            |           |    |   |            |   |   |   |
| Notice of Violation, number | engine                                                                                                                                                                      |         |        |     |           |            |           |    |   |            |   |   | 7,749 |
| Civil penalties sought, per violation                                                                                                                                                                     |         |        | $ 37,500 |           |            |           |    |   |            |   |   |   |
| G E Operating Agreement [Member]                                                                                                                                                                          |         |        |     |           |            |           |    |   |            |   |   |   |
| **Loss Contingencies [Line Items]**                                                                                                                                                                       |         |        |     |           |            |           |    |   |            |   |   |   |
| Operating Agreement Excess Loss Percentage                                                                                                                                                                |         |        |     |           | 10.00%          | 10.00%         |    |   |            |   |   |   |
| Loss Sharing Agreement, Percentage                                                                                                                                                                        |         |        |     |           | 9.50%           |           |    |   | 9.50%           | 9.50% |   |   |
| Off Balance Sheet Finance Receivables                                                                                                                                                                     |         |        |     |           | $ 1,500,000,000 |           |    |   | $ 1,500,000,000 |   | $ 1,400,000,000 |   |
| Off Balance Sheet Finance Receivables Related Originations1                                                                                                                                               |         |        |     |           | 2,400,000,000   |           |    |   | 2,400,000,000   |   | 2,300,000,000 |   |
| G E Operating Agreement [Member]                                                                                                                                                                          |         |        |     |           |            |           |    |   |            |   |   |   |
| **Loss Contingencies [Line Items]**                                                                                                                                                                       |         |        |     |           |            |           |    |   |            |   |   |   |
| Equipment leased to others                                                                                                                                                                                |         |        |     |           | 70,000,000      |           |    |   | 70,000,000      |   |   |   |
| Manufacturing Operations [Member] | Financed lease obligations [Member]                                                                                                                                   |         |        |     |           |            |           |    |   |            |   |   |   |
| **Loss Contingencies [Line Items]**                                                                                                                                                                       |         |        |     |           |            |           |    |   |            |   |   |   |
| Long-term Debt                                                                                                                                                                                            |         |        |     |           | 75,000,000      |           |    |   | 75,000,000      |   | $ 111,000,000 |   |
| Manufacturing Operations [Member] | G E Operating Agreement [Member] | Financed lease obligations [Member]                                                                                                |         |        |     |           |            |           |    |   |            |   |   |   |
| **Loss Contingencies [Line Items]**                                                                                                                                                                       |         |        |     |           |            |           |    |   |            |   |   |   |
| Long-term Debt                                                                                                                                                                                            |         |        |     |           | 75,000,000      |           |    |   | 75,000,000      |   |   |   |
| Pending Litigation [Member] | Disputes [Member]                                                                                                                                                           |         |        |     |           |            |           |    |   |            |   |   |   |
| **Loss Contingencies [Line Items]**                                                                                                                                                                       |         |        |     |           |            |           |    |   |            |   |   |   |
| Damages sought, value                                                                                                                                                                                     |         |        |     |           | 50,000,000      |           |    |   |            |   |   |   |
| Pending Litigation [Member] | FATMA Notice, Trial [Member] | Penalties [Member]                                                                                                                           |         |        |     |           |            |           |    |   |            |   |   |   |
| **Loss Contingencies [Line Items]**                                                                                                                                                                       |         |        |     |           |            |           |    |   |            |   |   |   |
| Damages sought, value                                                                                                                                                                                     |         |        |     |           | 1,000,000       |           |    | BRL 2  |            |   |   |   |
| IIAA Vs. Navitrucks [Member]                                                                                                                                                                              |         |        |     |           |            |           |    |   |            |   |   |   |
| **Loss Contingencies [Line Items]**                                                                                                                                                                       |         |        |     |           |            |           |    |   |            |   |   |   |
| Gain Contingency, Unrecorded Amount                                                                                                                                                                       |         |        |     |           | 35,000,000      |           |    |   | 35,000,000      |   |   |   |
| IIAA Vs. Navitrucks [Member] | International Chamber of Commerce [Member] | Penalties and Interest [Member]                                                                                               |         |        |     |           |            |           |    |   |            |   |   |   |
| **Loss Contingencies [Line Items]**                                                                                                                                                                       |         |        |     |           |            |           |    |   |            |   |   |   |
| Damages sought, value                                                                                                                                                                                     |         |        |     |           | 20,000,000      |           |    |   |            |   |   |   |
| Navitrucks Vs. IIAA [Member]                                                                                                                                                                              |         |        |     |           |            |           |    |   |            |   |   |   |
| **Loss Contingencies [Line Items]**                                                                                                                                                                       |         |        |     |           |            |           |    |   |            |   |   |   |
| Loss Contingency, Estimate of Possible Loss                                                                                                                                                               |         |        |     |           | $ 38,000,000    |           |    |   | $ 38,000,000    |   |   |   |
| SEC v. Navistar [Member] | Settled Litigation [Member]                                                                                                                                                    |         |        |     |           |            |           |    |   |            |   |   |   |
| **Loss Contingencies [Line Items]**                                                                                                                                                                       |         |        |     |           |            |           |    |   |            |   |   |   |
| Loss Contingency, Damages Paid, Value                                                                                                                                                                     |         | $ 7,500,000 |     |           |            |           |    |   |            |   |   |   |
| Brazil, Brazil Real | International Chamber of Commerce [Member] | Penalties and Interest [Member]                                                                                                        |         |        |     |           |            |           |    |   |            |   |   |   |
| **Loss Contingencies [Line Items]**                                                                                                                                                                       |         |        |     |           |            |           |    |   |            |   |   |   |
| Damages sought, value | BRL                                                                                                                                                                               |         |        |     |           |            |           | BRL 64  |   |            |   |   |   |
| Brazil, Brazil Real | Navitrucks [Member] | Alleged Unfulfilled Promises and Injury to Reputation [Member]                                                                                                |         |        |     |           |            |           |    |   |            |   |   |   |
| **Loss Contingencies [Line Items]**                                                                                                                                                                       |         |        |     |           |            |           |    |   |            |   |   |   |
| Damages sought, value | BRL                                                                                                                                                                               |         |        |     |           |            |           | BRL 128 |   |            |   |   |   |
| Brazil, Brazil Real | IIAA Vs. Navitrucks [Member]                                                                                                                                                        |         |        |     |           |            |           |    |   |            |   |   |   |
| **Loss Contingencies [Line Items]**                                                                                                                                                                       |         |        |     |           |            |           |    |   |            |   |   |   |
| Gain Contingency, Unrecorded Amount | BRL                                                                                                                                                                 |         |        |     |           |            |           |    |   |            | BRL 124 |   |   |
| Brazil, Brazil Real | IIAA Vs. Navitrucks [Member] | International Chamber of Commerce [Member] | Penalties and Interest [Member]                                                                         |         |        |     |           |            |           |    |   |            |   |   |   |
| **Loss Contingencies [Line Items]**                                                                                                                                                                       |         |        |     |           |            |           |    |   |            |   |   |   |
| Damages sought, value | BRL                                                                                                                                                                               |         |        |     |           |            | BRL 69         |    |   |            |   |   |   |
| Brazil, Brazil Real | Navitrucks Vs. IIAA [Member]                                                                                                                                                        |         |        |     |           |            |           |    |   |            |   |   |   |
| **Loss Contingencies [Line Items]**                                                                                                                                                                       |         |        |     |           |            |           |    |   |            |   |   |   |
| Loss Contingency, Estimate of Possible Loss | BRL                                                                                                                                                         |         |        |     |           |            |           |    |   |            | BRL 132 |   |   |
| Subsequent Event [Member] | Polar Express School Bus and Lakeview Bus Lines v. Navistar, Inc and IC Bus LLC [Member] | Pending Litigation [Member] | Damages from Product Defects [Member]                |         |        |     |           |            |           |    |   |            |   |   |   |
| **Loss Contingencies [Line Items]**                                                                                                                                                                       |         |        |     |           |            |           |    |   |            |   |   |   |
| Loss Contingency, Number of Buses | bus                                                                                                                                                                   | 40           |        |     |           |            |           |    |   |            |   |   |   |
| Loss Contingency, Damages Sought, Value, Compensatory Damages                                                                                                                                             | $ 6,700,000  |        |     |           |            |           |    |   |            |   |   |   |
| Loss Contingency, Damages Sought, Value, Punitive Damages                                                                                                                                                 | $ 50,000,000 |        |     |           |            |           |    |   |            |   |   |   |
| International Indústria de Motores da América do Sul Ltda [Member] | Other Cases Vs. International Indústria de Motores da América do Sul Ltda [Member] | Pending Litigation [Member] |         |        |     |           |            |           |    |   |            |   |   |   |
| **Loss Contingencies [Line Items]**                                                                                                                                                                       |         |        |     |           |            |           |    |   |            |   |   |   |
| Loss Contingency, Number of Truck Dealers | dealer                                                                                                                                                        |         |        |     |           |            |           |    |   | 2               |   |   |   |
| Loss Contingency, Number of Truck Fleet Owners | owner                                                                                                                                                    |         |        |     |           |            |           |    |   | 2               |   |   |   |

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Equipment leased to others
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Long Term Purchase Commitment Cancellation Fees
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Loss Contingency, Civil Penalty Sought, Per Violation
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Loss Contingency, Damages Sought, Value, Compensatory Damages
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Loss Contingency, Damages Sought, Value, Punitive Damages
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Loss Contingency, Number of Buses
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Loss Contingency, Number of Truck Dealers
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Loss Contingency, Number of Truck Fleet Owners
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Loss Sharing Agreement, Percentage
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Notice of Violation, number of engines
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Number of Contaminated Sites
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Number of Contaminated Sites in Sao Paulo, Brazil
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Off Balance Sheet Finance Receivables1
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Operating Agreement Excess Loss Percentage
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| - Definition
Total costs accrued as of the balance sheet date for environmental loss contingencies.
+ References
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| - Definition
The amount or range of possible amounts of gain that could be realized upon the resolution of a contingency.
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| - Definition
The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.
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| - Definition
Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.
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| - Definition
Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).
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| - Definition
Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.
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| - Definition
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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| - Definition
Amount of damages paid to the plaintiff in the legal matter.
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| - Definition
The value (monetary amount) of the award the plaintiff seeks in the legal matter.
+ References
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| - Definition
Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349
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| - Definition
Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier.
+ References
No definition available.
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