Customer deposits - Summary of disclosure of deposits from customers (Detail) - CNY (¥) ¥ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Disclosure Of Deposits From Customers [Abstract]
Current and saving accounts	¥ 427,529	¥ 576,181
Fixed deposits	9,029,405	3,357,569
Current deposits from customers	¥ 9,456,934	¥ 3,933,750

The amount of balances in customers' current accounts held by the entity.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
-IssueDate 2025-01-01
-Paragraph 112
-Subparagraph c
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-URIDate 2025-03-27

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- Definition

The amount of balances in customers' term deposits held by the entity.

+ References

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
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- Definition

The amount of current deposits from customers. [Refer: Deposits from customers]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
-IssueDate 2025-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_55&doctype=Standard
-URIDate 2025-03-27

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- Definition

Disclosure of deposits from customers.

+ References

No definition available.

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