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Deferred Grants - Summary of Deferred Grants (Detail) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022 CNY (¥)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 CNY (¥)	Dec. 31, 2022 USD ($)
Subclassifications of assets, liabilities and equities [abstract]
Beginning balance	¥ 424,140	$ 61,011	¥ 541,610
Received during the year	186,993	26,898	50,582
Grant disbursed to partner of joint project	(13,243)	(1,905)	(16,270)
Released to consolidated statement of profit or loss	(108,102)	(15,550)	(151,782)
Ending balance	489,788	$ 70,454	424,140
Current (Note 22)	13,404		12,482	$ 1,928
Non-current	¥ 476,384		¥ 411,658	$ 68,526

X

- Definition

Government grant received.

+ References

No definition available.

+ Details

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Namespace Prefix:	cyd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Grant disbursed to partner of joint project.

+ References

No definition available.

+ Details

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Namespace Prefix:	cyd_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

X

- Definition

Release of deferred grant recognised in profit or loss.

+ References

No definition available.

+ Details

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Namespace Prefix:	cyd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The amount of current government grants recognised in the statement of financial position as deferred income. [Refer: Government [member]; Government grants]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_55&doctype=Standard
-URIDate 2022-03-24

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The amount of assistance by government in the form of transfers of resources to an entity in return for past or future compliance with certain conditions relating to the operating activities of the entity, recognised as deferred income. They exclude those forms of government assistance that cannot reasonably have a value placed upon them and transactions with government that cannot be distinguished from the normal trading transactions of the entity. [Refer: Deferred income other than contract liabilities; Government [member]]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_55&doctype=Standard
-URIDate 2022-03-24

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The amount of non-current government grants recognised on the statement of financial position as deferred income. [Refer: Government [member]; Government grants]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_55&doctype=Standard
-URIDate 2022-03-24

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

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