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Related Party Disclosures - Additional Information (Detail) ¥ in Millions, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 CNY (¥) shares | Dec. 31, 2024 USD ($) shares | Dec. 31, 2023 CNY (¥) shares | Dec. 31, 2022 CNY (¥)
Guangxi Yuchai Machinery Group Company Limited [member] |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |
Ownership interest held by non-controlling shareholder with significant influence over the Group | 20.10% | 20.10% | 18.20% |
Hong Leong Asia Limited [member] | Subsidiaries [member] |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |
Ownership interest in the entity, shares | 18,270,965 | 18,270,965 | 18,270,965 |
Ownership interest in the entity, percentage | 48.70% | 48.70% | 44.70% |
Consultancy fees charged | ¥ 0.6 | $ 0.1 | ¥ 0.5 | ¥ 0.4
HL Technology Systems Private Limited [member] | Subsidiaries [member] |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |
Ownership interest held by controlling shareholder, percent | 25.40% | 25.40% | 23.30% |
Well Summit Investments Limited [member] | Subsidiaries [member] |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |
Ownership interest held by controlling shareholder, percent | 23.30% | 23.30% | 21.40% |

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- Definition Total percentage of share in the Entity held by controlling shareholder through its subsidiaries. + References No definition available. + Details
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- Definition Percentage of share in the Entity held by controlling shareholders through its subsidiaries. + References No definition available. + Details
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- Definition Percentage of share in the Entity held by Non-Controlling Shareholder with significant influence over the Group. + References No definition available. + Details
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- Definition The number of shares in the Entity held by controlling shareholder through its subsidiaries. + References No definition available. + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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- Details
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