XML 185 R174.htm IDEA: XBRL DOCUMENT v3.25.1

Financial Risk Management Objectives and Policies - Additional Information (Detail) ¥ in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2024 CNY (¥) Customer	Dec. 31, 2024 USD ($) Customer	Dec. 31, 2023 CNY (¥) Customer	Dec. 31, 2024 USD ($)
Disclosure of detailed information about financial instruments [line items]
Basis points	50.00%		50.00%	50.00%
Increase decrease in profit before tax on basis of higher lower basis points	¥ 12.5	$ 1.7	¥ 12.7
People's Republic of China [member]
Disclosure of detailed information about financial instruments [line items]
Number of top customers	5	5	5
People's Republic of China [member] | Top 5 Customers [member]
Disclosure of detailed information about financial instruments [line items]
Amount owed	¥ 242.4		¥ 597.7	$ 33.8
Percentage of trade receivables excluding bills receivables	13.30%	13.30%	38.60%

X

- Definition

Increase decrease in profit loss before tax on basis of higher lower basis points.

+ References

No definition available.

+ Details

Name:	ck0000932695_IncreaseDecreaseInProfitLossBeforeTaxOnBasisOfHigherLowerBasisPoints
Namespace Prefix:	ck0000932695_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Number of top customers.

+ References

No definition available.

+ Details

Name:	ck0000932695_NumberOfTopCustomers
Namespace Prefix:	ck0000932695_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage of trade receivables excluding bills receivables.

+ References

No definition available.

+ Details

Name:	ck0000932695_PercentageOfTradeReceivablesExcludingBillsReceivables
Namespace Prefix:	ck0000932695_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The adjustment to the basis (reference rate) used for calculation of the interest rate on borrowings. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 7
-IssueDate 2024-01-01
-Paragraph 7
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_7&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_BorrowingsAdjustmentToInterestRateBasis
Namespace Prefix:	ifrs-full_
Data Type:	dtr-2022:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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

X

- Definition

The amount due from customers for goods and services sold.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 78
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_78_b&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_TradeReceivables
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	ifrs-full_GeographicalAreasAxis=country_CN
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_MajorCustomersAxis=ck0000932695_Top5CustomersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: