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Earnings Per Share - Additional Information (Detail) - shares | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Earnings per share [abstract] |  |
Number of employee outstanding share option, anti-dilutive | 270,000 | 270,000

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- Definition Anti Dilutive Effect Of Employee Outstanding Share Options. + References No definition available. + Details
Name: | ck0000932695_AntiDilutiveEffectOfEmployeeOutstandingShareOptions
Namespace Prefix: | ck0000932695_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | ifrs-full_EarningsPerShareAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration