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v3.24.1.u1

Accounting policies - Additional Information (Detail) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 km Hours | Feb. 29, 2024
Translation of amounts from Renminbi to the US Dollar [member] |  |
Disclosure of Summary of Significant Accounting Policies [Line items] |  |
Convenience translation exchange rate per US$1.00 |  | 7.1036
Bottom of range [member] | On-Road Applications Engines [member] |  |
Disclosure of Summary of Significant Accounting Policies [Line items] |  |
Warranty claim period | 3 months |
Warranty mileage | km | 5,000 |
Bottom of range [member] | Other Applications Engines [member] |  |
Disclosure of Summary of Significant Accounting Policies [Line items] |  |
Warranty claim period | 2 months |
Product warranty running hours | Hours | 300 |
Top of range [member] | On-Road Applications Engines [member] |  |
Disclosure of Summary of Significant Accounting Policies [Line items] |  |
Warranty claim period | 36 months |
Warranty mileage | km | 300,000 |
Top of range [member] | Other Applications Engines [member] |  |
Disclosure of Summary of Significant Accounting Policies [Line items] |  |
Warranty claim period | 60 months |
Product warranty running hours | Hours | 15,000 |

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