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Revenue from Contracts with Customers - Summary of Contract Balances (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2024
Disclosure of contract assets liabilities [abstract]
Contract performance obligations description	According to the business customary practice, the remaining performance obligations (unfulfilled service-type maintenance service) at the year-end is expected to be satisfied within 2 years.

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- Definition

Disclosure of contract assets liabilities.

+ References

No definition available.

+ Details

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Namespace Prefix:	ck0000932695_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Definition

The description of when the entity typically satisfies its performance obligations. [Refer: Performance obligations [domain]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2024-01-01
-Paragraph 119
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_119_a&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_DescriptionOfWhenEntityTypicallySatisfiesPerformanceObligations
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration