XML 161 R154.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Share-based Payment - Additional Information (Detail) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 USD ($) yr | Dec. 31, 2016 USD ($) yr
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 | yr | 6.6 | 7.6
One year after the 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 the 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 the 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 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 2016-01-13 -Paragraph 45 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2016-03-30&anchor=para_45_d&doctype=Standard -URIDate 2016-03-31 + Details
Name: | ifrs-full_ExercisePriceOfOutstandingShareOptions
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition The weighted average remaining contractual life of outstanding share options. [Refer: Weighted average [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2016-01-13 -Paragraph 45 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2016-03-30&anchor=para_45_d&doctype=Standard -URIDate 2016-03-31 + Details
Name: | ifrs-full_WeightedAverageRemainingContractualLifeOfOutstandingShareOptions
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:decimalItemType
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: |