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Other Financial Liabilities - Summary of Loans and Borrowings (Parenthetical) (Detail) $ in Millions | Dec. 31, 2019 SGD ($)
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MUFG Bank Ltd [member] |
Disclosure of detailed information about borrowings [line items] |
Facility limit | $ 30

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- Definition Line of credit facility maximum borrowing capacity. + References No definition available. + Details
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Namespace Prefix: | cyd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | ifrs-full_BorrowingsByNameAxis=cyd_MUFGBankLtdMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |