XML 175 R161.htm IDEA: XBRL DOCUMENT
v3.21.1

Deferred Grants - Additional Information (Detail) ¥ in Thousands, $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 CNY (¥) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 CNY (¥) | Dec. 31, 2018 CNY (¥) | Dec. 31, 2020 USD ($)
Statement 1 [Line Items] |  |  |  |  |
Revenue From Government Grants | ¥ 209,793 | $ 32,419 | ¥ 122,371 | ¥ 32,237 |
Deferred grant outstanding | 518,142 |  | 656,776 |  | $ 80,068
Grant Related to Assets [Member] |  |  |  |  |
Statement 1 [Line Items] |  |  |  |  |
Deferred grant outstanding | 271,600 |  | ¥ 434,800 |  | $ 42,000
JSS Grant [Member] |  |  |  |  |
Statement 1 [Line Items] |  |  |  |  |
Revenue From Government Grants | ¥ 1,100 | $ 200 |  |  |

X
- References No definition available. + Details
Name: | cyd_Statement1LineItems
Namespace Prefix: | cyd_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of non-current government grants recognised on the statement of financial position as deferred income. [Refer: Government [member]; Deferred income; Government grants] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_55&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_NoncurrentGovernmentGrants
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of income recognised in relation to government grants. [Refer: Government grants] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 20 -IssueDate 2020-01-01 -Paragraph 39 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=20&code=ifrs-tx-2020-en-r&anchor=para_39_b&doctype=Standard -URIDate 2020-01-01 + Details
Name: | ifrs-full_RevenueFromGovernmentGrants
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | cyd_DeferredGrantAxis=cyd_GrantRelatedToAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | cyd_GrantNameAxis=cyd_JssGrantMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |