Dividends paid in cash.

No definition available.

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- Definition

Dividends paid in ordinary shares.

+ References

No definition available.

+ Details

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Dividends paid in ordinary shares value.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

Minimum number of ordinary shares to be owned by HLA and its affiliates, directly or indirectly, to prevent special share cease to carry any rights.

+ References

No definition available.

+ Details

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- Definition

The number of non-redeemable convertible cumulative preference shares issued by the subsidiary.

+ References

No definition available.

+ Details

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of non redeemable convertible cumulative preference shares converted into ordinary shares.

+ References

No definition available.

+ Details

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Namespace Prefix:	cyd_
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- Definition

Preference share conversion ratio.

+ References

No definition available.

+ Details

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

- Definition

Shares issued price per share pursuant to conversion.

+ References

No definition available.

+ Details

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Namespace Prefix:	cyd_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Weighted average trading price per share.

+ References

No definition available.

+ Details

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Namespace Prefix:	cyd_
Data Type:	num:perShareItemType
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 domain members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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- Definition

The amount of dividends paid per ordinary share.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 34
-IssueDate 2018-01-01
-Paragraph 16A
-Subparagraph f
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=34&date=2018-03-01&anchor=para_16A_f&doctype=Standard
-URIDate 2018-03-16

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- Definition

The number of share options exercised in a share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 2
-IssueDate 2018-01-01
-Paragraph 45
-Subparagraph b
-Clause iv
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=2&date=2018-03-01&anchor=para_45_b_iv&doctype=Standard
-URIDate 2018-03-16

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Data Type:	xbrli:decimalItemType
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Period Type:	duration

- Definition

The number of shares issued by the entity.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2018-01-01
-Paragraph 106
-Subparagraph d
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_106_d&doctype=Standard
-URIDate 2018-03-16

+ Details

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The nominal value per share.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2018-01-01
-Paragraph 79
-Subparagraph a
-Clause iii
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_79_a_iii&doctype=Standard
-URIDate 2018-03-16

+ Details

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

- Details

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Namespace Prefix:
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- Details

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- Details

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Namespace Prefix:
Data Type:	na
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- Details

Name:	ifrs-full_JointVenturesAxis=cyd_HLGlobalEnterprisesLimitedMember
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	ifrs-full_TypesOfSharebasedPaymentArrangementsAxis=cyd_EquityIncentivePlanMember
Namespace Prefix:
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Issued Capital and Preference Shares - Additional Information (Detail) ¥ / shares in Units, $ / shares in Units, ¥ in Thousands, $ in Thousands				12 Months Ended
	Jul. 13, 2017 USD ($) $ / shares shares	Jul. 13, 2017 CNY (¥) shares	Jul. 04, 2006 $ / shares shares	Dec. 31, 2018 USD ($) $ / shares	Dec. 31, 2018 CNY (¥)	Dec. 31, 2017 CNY (¥) shares	Dec. 31, 2017 $ / shares	Dec. 31, 2016 $ / shares $ / shares shares	Dec. 31, 2018 ¥ / shares	Dec. 31, 2017 ¥ / shares	Dec. 31, 2016 $ / shares shares
Disclosure of classes of share capital [line items]
Dividend paid per share \| $ / shares	$ 0.90			$ 2.21			$ 0.90	$ 0.85
Dividend paid in form of cash	$ 34,700			$ 89,305	¥ 597,459	¥ 235,947
Dividend paid in form of shares	99,790	99,790
Weighted average trading price per share \| $ / shares	$ 19.0329
Total value of dividend paid in shares \| ¥		¥ 12,900				¥ 12,897
Number of shares issued upon exercise of share options				0	0	46,400
Ordinary shares [member]
Disclosure of classes of share capital [line items]
Issue price per share \| (per share)				$ 0.10			$ 0.10		¥ 0.10	¥ 0.10
Ordinary shares [member] \| Bottom of range [member]
Disclosure of classes of share capital [line items]
Number of special share shall cease to carry any rights in event by HLA						7,290,000
Preference share [member] \| HL Global Enterprises Limited [member]
Disclosure of classes of share capital [line items]
NCCPS issued			197,141,190
Issue price per share \| $ / shares			$ 0.02					$ 0.02
Number of shares converted to ordinary shares in subsidiaries capital			197,011,794					28,998
Ordinary share issued pursuant to conversion of NCCPS								2,899			2,899
Issue price per share \| $ / shares											$ 0.02
NCCPS conversion ratio				10.00%	10.00%			10.00%
Equity incentive plan [member]
Disclosure of classes of share capital [line items]
Number of shares issued upon exercise of share options						46,400