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Commitments and Contingencies - Additional Information (Detail) ¥ in Millions, $ in Millions	Dec. 31, 2022 CNY (¥)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 CNY (¥)
Disclosure of commitments and contingencies [line items]
Capital commitments related to property, plant and equipment	¥ 319.5	$ 46.0	¥ 425.2

X

- Definition

Disclosure of commitments and contingencies [line items]

+ References

No definition available.

+ Details

Name:	cyd_DisclosureOfCommitmentsAndContingenciesLineItems
Namespace Prefix:	cyd_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of contractual commitments for the acquisition of property, plant and equipment. [Refer: Property, plant and equipment]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 16
-IssueDate 2022-03-24
-Paragraph 74
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2022-en-r&anchor=para_74_c&doctype=Standard
-URIDate 2022-03-24

+ Details

Name:	ifrs-full_ContractualCommitmentsForAcquisitionOfPropertyPlantAndEquipment
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant