Credit facility authorized amount.

No definition available.

Name:	cyd_CreditFacilityAuthorizedAmount
Namespace Prefix:	cyd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line of credit facility maximum borrowing capacity.

+ References

No definition available.

+ Details

Name:	cyd_LineOfCreditFacilityMaximumBorrowingCapacity1
Namespace Prefix:	cyd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Net debt to tangible net worth ratio.

+ References

No definition available.

+ Details

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

- Definition

Total percentage of share in the Entity held by controlling shareholder through its subsidiaries.

+ References

No definition available.

+ Details

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

- Definition

Refinancing of uncommitted multi-currency revolving credit facility.

+ References

No definition available.

+ Details

Name:	cyd_RefinancingOfUncommittedMulticurrencyRevolvingCreditFacility
Namespace Prefix:	cyd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Refinancing of unsecured multi-currency revolving credit facility.

+ References

No definition available.

+ Details

Name:	cyd_RefinancingOfUnsecuredMulticurrencyRevolvingCreditFacility
Namespace Prefix:	cyd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Tangible net worth.

+ References

No definition available.

+ Details

Name:	cyd_TangibleNetWorth
Namespace Prefix:	cyd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The maturity of borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 7
-IssueDate 2022-03-24
-Paragraph 7
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_7&doctype=Standard
-URIDate 2022-03-24

+ Details

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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

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

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_CounterpartiesAxis=cyd_HongLeongAsiaLimitedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

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Data Type:	na
Balance Type:
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- Details

Name:	ifrs-full_BorrowingsByNameAxis=cyd_CreditFacilityWithMUFGSingaporeBranchMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_BorrowingsByNameAxis=cyd_CreditFacilityWithSumitomoBranchMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CurrencyAxis=currency_USD
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	srt_CurrencyAxis=currency_SGD
Namespace Prefix:
Data Type:	na
Balance Type:
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Loans and borrowings - Additional Information (Detail) $ in Millions, $ in Millions			12 Months Ended
	Apr. 12, 2022	Jan. 01, 2019	Dec. 31, 2022 SGD ($)	Dec. 31, 2022 USD ($)	Jun. 25, 2021 SGD ($)	Jun. 24, 2020 USD ($)	Jun. 10, 2020 SGD ($)
DBS Bank Ltd [member]
Disclosure of detailed information about borrowings [line items]
Refinancing of uncommitted multi-currency revolving credit facility					$ 30.0
Ownership interest in the entity, percentage			76.40%
Facility limit			$ 30.0
DBS Bank Ltd [member] \| Hong Leong Asia Limited [member]
Disclosure of detailed information about borrowings [line items]
Ownership interest in the entity, percentage		35.00%
DBS Bank Ltd [member] \| Top of range [member]
Disclosure of detailed information about borrowings [line items]
Credit facility with bank			$ 30.0
Consolidated tangible net worth ratio			1.0 times
DBS Bank Ltd [member] \| Bottom of range [member]
Disclosure of detailed information about borrowings [line items]
Consolidated tangible net worth				$ 400.0
Credit facility with MUFG Singapore Branch [member]
Disclosure of detailed information about borrowings [line items]
Credit facility maturity period			three years
Refinancing of unsecured multi-currency revolving credit facility							$ 30.0
Credit facility with MUFG Singapore Branch [member] \| Top of range [member]
Disclosure of detailed information about borrowings [line items]
Credit facility with bank			$ 30.0
Consolidated tangible net worth				120.0
Consolidated tangible net worth ratio			2.0 times
Facility limit			$ 30.0
Sumitomo branch [Member]
Disclosure of detailed information about borrowings [line items]
Refinancing of unsecured multi-currency revolving credit facility						$ 30.0
Sumitomo branch [Member] \| United States of America, Dollars
Disclosure of detailed information about borrowings [line items]
Credit facility maturity period	6 months
Sumitomo branch [Member] \| Singapore, Dollars
Disclosure of detailed information about borrowings [line items]
Credit facility maturity period	3 months
Sumitomo branch [Member] \| Top of range [member]
Disclosure of detailed information about borrowings [line items]
Credit facility with bank				30.0
Facility limit				30.0
Sumitomo branch [Member] \| Bottom of range [member]
Disclosure of detailed information about borrowings [line items]
Consolidated tangible net worth				$ 200.0
Consolidated tangible net worth ratio			2.0 times