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Other Current Assets - Summary of Other Current Assets (Detail) ¥ in Thousands, $ in Thousands		Dec. 31, 2019 CNY (¥)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 CNY (¥)
Miscellaneous current assets [abstract]
Development properties		¥ 17,721	$ 2,501	¥ 20,267
Quoted equity securities		9,235	1,304	21,876
Derivative not designated as hedges – foreign exchange forward contract				4,529
Total	[1]	¥ 26,956	$ 3,805	¥ 46,672
[1] On September 19, 2018, Yuchai entered into a non-deliverable forward foreign exchange contract (“NDF”) with China Construction Bank to purchase US$73.0 million at the forward exchange rate (RMB/US$) of 6.8599 on September 13, 2019. The Group accounted for this NDF at fair value through profit or loss.

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Current derivative not designated as hedges foreign exchange forward contract.

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Quoted equity securities.

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- Definition

The amount of property that is being constructed or developed for future use as investment property. [Refer: Investment property]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2019-01-01
-Paragraph 112
-Subparagraph c
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- Definition

The amount of current assets that the entity does not separately disclose in the same statement or note. [Refer: Current assets]

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
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-IssueDate 2019-01-01
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-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_55&doctype=Standard
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