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Property, Plant and Equipment - Additional Information (Detail) ¥ in Millions, $ in Millions | 12 Months Ended
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Dec. 31, 2024 CNY (¥) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 CNY (¥) | Dec. 31, 2022 CNY (¥)
Cost of sales [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Impairment loss | ¥ 7.3 | $ 1.0 | ¥ 8.0 | ¥ 17.3
Other operating expenses [member] |  |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |  |
Impairment loss | ¥ 0.0 | $ 0.0 | ¥ 36.7 | ¥ 0.0

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- Definition The amount of impairment loss recognised in profit or loss for property, plant and equipment. [Refer: Impairment loss recognised in profit or loss; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2024-01-01 -Paragraph 73 -Subparagraph e -Clause v -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2024-en-r&anchor=para_73_e_v&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 98 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_98_a&doctype=Standard -URIDate 2024-03-27 + Details
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