Related Party Disclosures - Significant Transactions with Related Parties (Parenthetical) (Detail) - CNY (¥) ¥ in Millions	1 Months Ended
Aug. 31, 2017	Jun. 30, 2017
Guangxi Yuchai Accessories Manufacturing Company Limited [member]
Disclosure of transactions between related parties [line items]
Proportion of equity interest		25.00%
Total consideration from disposal		¥ 1.3
YEMC [member]
Disclosure of transactions between related parties [line items]
Proportion of equity interest	30.00%
Total consideration from disposal	¥ 1.9

The proportion of ownership interest in an associate attributable to the entity. [Refer: Associates [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Number 27
-IssueDate 2019-01-01
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-URIDate 2019-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2019-01-01
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration