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Contingent Liabilities - Additional Information (Detail) € in Millions, Airbags in Millions, $ in Millions |  | 3 Months Ended | 9 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 31, 2024 EUR (€) | Jun. 30, 2025 USD ($) Vehicle | Dec. 31, 2020 Vehicle | Sep. 30, 2025 USD ($) Vehicle | Dec. 31, 2024 USD ($) | Oct. 31, 2024 USD ($) | Oct. 31, 2024 EUR (€) | Sep. 30, 2024 USD ($) | Jun. 30, 2024 USD ($) | Dec. 31, 2023 USD ($) | Sep. 05, 2023 Airbags
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Product liability insurance receivable |  | $ 69 |  | $ 85 | $ 65 |  |  | $ 77 | $ 73 | $ 96 |
Insurance receivable related to recall |  |  |  | 15 |  |  |  |  |  |  |
Recall of frontal driver and passenger air bag | Airbags | Airbags |  |  |  |  |  |  |  |  |  |  | 52
Stellantis | Maximum |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Range of Possible Loss, Portion Not Accrued |  |  |  | 385 |  |  |  |  |  |  |
Stellantis | Minimum |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Range of Possible Loss, Portion Not Accrued |  |  |  | 0 |  |  |  |  |  |  |
Stellantis | Damages from Product Defects |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of vehicles recalled | Vehicle |  | 250,000 |  |  |  |  |  |  |  |  |
Honda Buckle Recall | Damages from Product Defects |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of vehicles recalled | Vehicle |  |  | 449,000 |  |  |  |  |  |  |  |
Unannounced Recall | Damages from Product Defects |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Product liability insurance receivable |  |  |  | $ 12 |  |  |  |  |  |  |
ZF Inflator Recall | Global |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of vehicles recalled | Vehicle |  |  |  | 762,000 |  |  |  |  |  |  |
BMW Complaint [Member] |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Product liability insurance receivable |  |  |  |  |  | $ 0 |  |  |  |  |
Description of antitrust matters |  |  |  | The Company has determined pursuant to ASC 450 that a loss is reasonably possible with respect to the BMW Complaint. |  |  |  |  |  |  |
Claiming damages and interest | € |  |  |  |  |  |  | € 95 |  |  |  |
Claiming damages charges | € | € 63 |  |  |  |  |  |  |  |  |  |
BMW Complaint [Member] | Maximum |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Range of Possible Loss, Portion Not Accrued | € |  |  |  |  |  |  | 95 |  |  |  |
BMW Complaint [Member] | Minimum |  |  |  |  |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Loss Contingency, Range of Possible Loss, Portion Not Accrued | € |  |  |  |  |  |  | € 0 |  |  |  |

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