XML 102 R156.htm IDEA: XBRL DOCUMENT v3.20.1

Share-based Payment - Additional Information (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disclosure of terms and conditions of share-based payment arrangement [line items]
Equity incentive plan period	10 years
Exercise price for options outstanding	$ 21.11	$ 21.11
Weighted average remaining contractual life for the share options outstanding	4.6 years	5.6 years
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%

X

- Definition

Equity incentive plan period.

+ References

No definition available.

+ Details

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

X

- Definition

Share-based payment arrangement vesting rights percentage.

+ References

No definition available.

+ Details

Name:	cyd_SharebasedPaymentArrangementVestingRightsPercentage
Namespace Prefix:	cyd_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- 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

X

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain 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

X

- Definition

The exercise price of outstanding share options.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2019-01-01
-Paragraph 45
-Subparagraph d
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2019-en-r&anchor=para_45_d&doctype=Standard
-URIDate 2019-03-27

+ Details

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

X

- Details

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

X

- Details

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

X

- Details

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

X

- Details

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