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Trade and Other Receivables - Summary of Trade and Other Receivables (Parenthetical) (Detail) ¥ in Thousands, $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 CNY (¥) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 CNY (¥) | Dec. 31, 2021 USD ($)
Disclosure of trade and other receivables [line items] |  |  |  |
Bills receivable | ¥ 6,437,100 |  | ¥ 7,793,343 | $ 1,018,174
Impairment loss on bills receivable in transit | 6,000 | $ 900 | 6,500 |
Secured bank facilities [member] |  |  |  |
Disclosure of trade and other receivables [line items] |  |  |  |
Bills receivable | 13,400 |  | 0 | 2,100
Joint ventures [member] |  |  |  |
Disclosure of trade and other receivables [line items] |  |  |  |
Bills receivable | 700 |  | 0 | 100
Other related parties [member] |  |  |  |
Disclosure of trade and other receivables [line items] |  |  |  |
Bills receivable | ¥ 523,500 |  | ¥ 1,014,100 | $ 82,800

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- Definition Current bills receivable. + References No definition available. + Details
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Period Type: | instant

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- Definition Disclosure of trade and other receivables. + References No definition available. + Details
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- Definition impairment Loss On bills receivable in transit. + References No definition available. + Details
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Namespace Prefix: | cyd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Details
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Namespace Prefix: |
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Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Balance Type: |
Period Type: |