Equity incentive plan period.

No definition available.

Name:	cyd_EquityIncentivePlanPeriod
Namespace Prefix:	cyd_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Share-based payment arrangement vesting rights percentage.

+ References

No definition available.

+ Details

Name:	cyd_SharebasedPaymentArrangementVestingRightsPercentage
Namespace Prefix:	cyd_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Weighted average remaining contractual life for the share options outstanding.

+ References

No definition available.

+ Details

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

- 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

Name:	ifrs-full_DisclosureOfTermsAndConditionsOfSharebasedPaymentArrangementLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The exercise price of outstanding share options.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2022-03-24
-Paragraph 45
-Subparagraph d
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2022-en-r&anchor=para_45_d&doctype=Standard
-URIDate 2022-03-24

+ Details

Name:	ifrs-full_ExercisePriceOfOutstandingShareOptions2019
Namespace Prefix:	ifrs-full_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

The amount of expense arising from equity-settled share-based payment transactions in which the goods or services received did not qualify for recognition as assets. [Refer: Expense from share-based payment transactions]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2022-03-24
-Paragraph 51
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2022-en-r&anchor=para_51_a&doctype=Standard
-URIDate 2022-03-24

+ Details

Name:	ifrs-full_ExpenseFromEquitysettledSharebasedPaymentTransactionsInWhichGoodsOrServicesReceivedDidNotQualifyForRecognitionAsAssets
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	cyd_ShareBasedPaymentAwardDateAxis=cyd_OneYearAfterDateOfGrantMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_RangeAxis=ifrs-full_TopOfRangeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	cyd_ShareBasedPaymentAwardDateAxis=cyd_TwoYearsAfterDateOfGrantMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	cyd_ShareBasedPaymentAwardDateAxis=cyd_ThreeYearsAfterDateOfGrantMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Share-based Payment - Additional Information (Detail) ¥ in Thousands	12 Months Ended
	Dec. 31, 2022 CNY (¥)	Dec. 31, 2021 CNY (¥)	Dec. 31, 2020 CNY (¥)	Dec. 31, 2022 $ / shares	Dec. 31, 2021 $ / shares
Disclosure of terms and conditions of share-based payment arrangement [line items]
Equity incentive plan period	10 years
Exercise price for options outstanding \| $ / shares				$ 21.11	$ 21.11
Weighted average remaining contractual life for the share options outstanding	1.6	2.6
Expense arising from equity-settled share-based payment transactions \| ¥	¥ 0	¥ 0	¥ 0
One year after date of grant [member] \| Top of range [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Share-based payment vesting percentage	33.00%
Two years after date of grant [member] \| Top of range [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Share-based payment vesting percentage	66.00%
Three years after date of grant [member] \| Top of range [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Share-based payment vesting percentage	100.00%