| **Condensed Consolidating Guarantor and Non-Guarantor Financial Information - Balance Sheet (Details) - USD ($) $ in Millions** | 9 Months Ended |         |         |        |         |
|---------------------------------------------------------------------------------------------------------------------------------|----------------|---------|---------|--------|---------|
||
| Cash and cash equivalents                                                                                                       |           | $ 912   | $ 497   | $ 755  | $ 1,087 |
| Marketable securities                                                                                                           |           | 159     | 605     |   |    |
| Restricted cash                                                                                                                 |           | 121     | 171     |   |    |
| Finance and other receivables, net                                                                                              |           | 2,437   | 2,616   |   |    |
| Inventories                                                                                                                     |           | 1,135   | 1,319   |   |    |
| Investments in non-consolidated affiliates                                                                                      |           | 66      | 73      |   |    |
| Property and equipment, net                                                                                                     |           | 1,345   | 1,562   |   |    |
| Goodwill                                                                                                                        |           | 38      | 38      | $ 184  | $ 280   |
| Deferred taxes, net                                                                                                             |           | 164     | 200     |   |    |
| Other                                                                                                                           |           | 315     | 362     |   |    |
| Total assets                                                                                                                    |           | 6,692   | 7,443   |   |    |
| Debt                                                                                                                            |           | 5,298   | 5,224   |   |    |
| Postretirement benefits liabilities                                                                                             |           | 3,088   | 2,955   |   |    |
| Amounts due to (from) affiliates                                                                                                |           | 0       | 0       |   |    |
| Other liabilities                                                                                                               |           | 3,466   | 3,882   |   |    |
| Total liabilities                                                                                                               |           | 11,852  | 12,061  |   |    |
| Redeemable equity securities                                                                                                    |           | 0       | 2       |   |    |
| Stockholders’ equity attributable to non-controlling interests                                                            |           | 7       | 34      |   |    |
| Stockholders’ equity (deficit) attributable to Navistar International Corporation                                         |           | (5,167) | (4,654) |   |    |
| Total liabilities and stockholders’ deficit                                                                               |           | 6,692   | 7,443   |   |    |
| Parent Company [Member]                                                                                                         |           |    |    |   |    |
| Cash and cash equivalents                                                                                                       |           | 456     | 101     |   |    |
| Marketable securities                                                                                                           |           | 112     | 379     |   |    |
| Restricted cash                                                                                                                 |           | 16      | 19      |   |    |
| Finance and other receivables, net                                                                                              |           | 1       | 0       |   |    |
| Inventories                                                                                                                     |           | 0       | 0       |   |    |
| Investments in non-consolidated affiliates                                                                                      |           | (7,679) | (7,245) |   |    |
| Property and equipment, net                                                                                                     |           | 0       | 0       |   |    |
| Goodwill                                                                                                                        |           | 0       | 0       |   |    |
| Deferred taxes, net                                                                                                             |           | 7       | 5       |   |    |
| Other                                                                                                                           |           | 33      | 34      |   |    |
| Total assets                                                                                                                    |           | (7,054) | (6,707) |   |    |
| Debt                                                                                                                            |           | 1,971   | 1,958   |   |    |
| Postretirement benefits liabilities                                                                                             |           | 0       | 0       |   |    |
| Amounts due to (from) affiliates                                                                                                |           | (7,574) | (7,618) |   |    |
| Other liabilities                                                                                                               |           | 3,716   | 3,605   |   |    |
| Total liabilities                                                                                                               |           | (1,887) | (2,055) |   |    |
| Redeemable equity securities                                                                                                    |           |    | 2       |   |    |
| Stockholders’ equity attributable to non-controlling interests                                                            |           | 0       | 0       |   |    |
| Stockholders’ equity (deficit) attributable to Navistar International Corporation                                         |           | (5,167) | (4,654) |   |    |
| Total liabilities and stockholders’ deficit                                                                               |           | (7,054) | (6,707) |   |    |
| Guarantor Subsidiaries [Member]                                                                                                 |           |    |    |   |    |
| Cash and cash equivalents                                                                                                       |           | 81      | 53      |   |    |
| Marketable securities                                                                                                           |           | 0       | 0       |   |    |
| Restricted cash                                                                                                                 |           | 7       | 4       |   |    |
| Finance and other receivables, net                                                                                              |           | 99      | 124     |   |    |
| Inventories                                                                                                                     |           | 809     | 792     |   |    |
| Investments in non-consolidated affiliates                                                                                      |           | 6,204   | 6,410   |   |    |
| Property and equipment, net                                                                                                     |           | 737     | 827     |   |    |
| Goodwill                                                                                                                        |           | 0       | 0       |   |    |
| Deferred taxes, net                                                                                                             |           | 20      | 25      |   |    |
| Other                                                                                                                           |           | 128     | 137     |   |    |
| Total assets                                                                                                                    |           | 8,085   | 8,372   |   |    |
| Debt                                                                                                                            |           | 1,180   | 937     |   |    |
| Postretirement benefits liabilities                                                                                             |           | 2,909   | 2,752   |   |    |
| Amounts due to (from) affiliates                                                                                                |           | 10,280  | 11,739  |   |    |
| Other liabilities                                                                                                               |           | 207     | 370     |   |    |
| Total liabilities                                                                                                               |           | 14,576  | 15,798  |   |    |
| Redeemable equity securities                                                                                                    |           |    | 0       |   |    |
| Stockholders’ equity attributable to non-controlling interests                                                            |           | 0       | 0       |   |    |
| Stockholders’ equity (deficit) attributable to Navistar International Corporation                                         |           | (6,491) | (7,426) |   |    |
| Total liabilities and stockholders’ deficit                                                                               |           | 8,085   | 8,372   |   |    |
| Non-Guarantor Subsidiaries [Member]                                                                                             |           |    |    |   |    |
| Cash and cash equivalents                                                                                                       |           | 375     | 343     |   |    |
| Marketable securities                                                                                                           |           | 47      | 226     |   |    |
| Restricted cash                                                                                                                 |           | 98      | 148     |   |    |
| Finance and other receivables, net                                                                                              |           | 2,440   | 2,504   |   |    |
| Inventories                                                                                                                     |           | 342     | 539     |   |    |
| Investments in non-consolidated affiliates                                                                                      |           | 64      | 71      |   |    |
| Property and equipment, net                                                                                                     |           | 616     | 740     |   |    |
| Goodwill                                                                                                                        |           | 38      | 38      |   |    |
| Deferred taxes, net                                                                                                             |           | 137     | 169     |   |    |
| Other                                                                                                                           |           | 155     | 194     |   |    |
| Total assets                                                                                                                    |           | 4,312   | 4,972   |   |    |
| Debt                                                                                                                            |           | 2,151   | 2,336   |   |    |
| Postretirement benefits liabilities                                                                                             |           | 179     | 203     |   |    |
| Amounts due to (from) affiliates                                                                                                |           | (2,879) | (4,267) |   |    |
| Other liabilities                                                                                                               |           | (388)   | (22)    |   |    |
| Total liabilities                                                                                                               |           | (937)   | (1,750) |   |    |
| Redeemable equity securities                                                                                                    |           |    | 0       |   |    |
| Stockholders’ equity attributable to non-controlling interests                                                            |           | 7       | 34      |   |    |
| Stockholders’ equity (deficit) attributable to Navistar International Corporation                                         |           | 5,242   | 6,688   |   |    |
| Total liabilities and stockholders’ deficit                                                                               |           | 4,312   | 4,972   |   |    |
| Deferred tax assets reclassified from NIC                                                                                       | $ 40           |    |    |   |    |
| Consolidation, Eliminations [Member]                                                                                            |           |    |    |   |    |
| Cash and cash equivalents                                                                                                       |           | 0       | 0       |   |    |
| Marketable securities                                                                                                           |           | 0       | 0       |   |    |
| Restricted cash                                                                                                                 |           | 0       | 0       |   |    |
| Finance and other receivables, net                                                                                              |           | (103)   | (12)    |   |    |
| Inventories                                                                                                                     |           | (16)    | (12)    |   |    |
| Investments in non-consolidated affiliates                                                                                      |           | 1,477   | 837     |   |    |
| Property and equipment, net                                                                                                     |           | (8)     | (5)     |   |    |
| Goodwill                                                                                                                        |           | 0       | 0       |   |    |
| Deferred taxes, net                                                                                                             |           | 0       | 1       |   |    |
| Other                                                                                                                           |           | (1)     | (3)     |   |    |
| Total assets                                                                                                                    |           | 1,349   | 806     |   |    |
| Debt                                                                                                                            |           | (4)     | (7)     |   |    |
| Postretirement benefits liabilities                                                                                             |           | 0       | 0       |   |    |
| Amounts due to (from) affiliates                                                                                                |           | 173     | 146     |   |    |
| Other liabilities                                                                                                               |           | (69)    | (71)    |   |    |
| Total liabilities                                                                                                               |           | 100     | 68      |   |    |
| Redeemable equity securities                                                                                                    |           |    | 0       |   |    |
| Stockholders’ equity attributable to non-controlling interests                                                            |           | 0       | 0       |   |    |
| Stockholders’ equity (deficit) attributable to Navistar International Corporation                                         |           | 1,249   | 738     |   |    |
| Total liabilities and stockholders’ deficit                                                                               |           | $ 1,349 | $ 806   |   |    |
| Manufacturing Operations [Member] | Notes Payable to Banks [Member] | Eight Point Two Five Percent Senior Notes [Member]        |           |    |    |   |    |
| Debt Instrument, Interest Rate, Stated Percentage                                                                               |           | 8.25%   |    |   |    |

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Aggregate carrying amount, as of the balance sheet date, of assets not separately disclosed in the balance sheet, including  the carrying amounts of all intangible assets, excluding goodwill, net of accumulated amortization and impairment charges.
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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.
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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.
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Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.
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Contractual interest rate for funds borrowed, under the debt agreement.
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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.
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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.
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Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership.
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Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.
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Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any.
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Amount of investments in debt and equity securities, including, but not limited to, held-to-maturity, trading and available-for-sale expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer.
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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest).
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The aggregate carrying amount, as of the balance sheet date, of liabilities not separately disclosed in the balance sheet.
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This represents the entire liability recognized in the balance sheet that is associated with the defined benefit plans.
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| - Definition
Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.
+ References
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| - Definition
Receivables to be collected from (obligations owed to) related parties, net as of the balance sheet date where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth.
+ References
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| - Definition
The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. This element is for unclassified presentations; for classified presentations there is a separate and distinct element.
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.
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| - Definition
Carrying amount, attributable to parent and noncontrolling interests, of an entity's issued and outstanding stock which is not included within permanent equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. Includes stock with a put option held by an ESOP and stock redeemable by a holder only in the event of a change in control of the issuer.
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