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Related Party Disclosures - Significant Transactions with Related Parties (Parenthetical) (Detail) ¥ in Millions, $ in Millions | 1 Months Ended
--- | ---
Aug. 31, 2017 CNY (¥) | Aug. 31, 2017 USD ($) | Jun. 30, 2017 CNY (¥) | Jun. 30, 2017 USD ($) | Oct. 31, 2015 CNY (¥)
Guangxi Yuchai Accessories Manufacturing Company Limited Stateholding Company [member] |  |  |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |  |  |
Percentage of equity interest acquired |  |  | 25.00% | 25.00% |
Purchase consideration |  |  | ¥ 1.3 | $ 0.2 |
Guangxi Yuchai Equipment Mould Company Limited [Member] |  |  |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |  |  |
Percentage of equity interest acquired |  |  |  |  | 2.86%
Purchase consideration |  |  |  |  | ¥ 4.2
Guangxi Yulin Yuchai Property Management Co Ltd [Member] |  |  |  |  |
Disclosure of transactions between related parties [Line Items] |  |  |  |  |
Proportion of equity interest | 30.00% | 30.00% |  |  |
Total consideration from disposal | ¥ 1.9 | $ 0.3 |  |  |

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- Definition The amount of consideration paid or received in respect of both obtaining and losing control of subsidiaries or other businesses. [Refer: Subsidiaries [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2016-01-13 -Paragraph 40 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2016-03-30&anchor=para_40_a&doctype=Standard -URIDate 2016-03-31 + Details
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- Definition The percentage of voting equity interests acquired in a business combination. [Refer: Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2016-01-13 -Paragraph B64 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=3&date=2016-03-30&anchor=para_B64_c&doctype=Appendix&seq=2 -URIDate 2016-03-31 + Details
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