Compulsory reserve (Details) - BRL (R$) R$ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Compulsory reserve [Abstract]
Compulsory reserve	R$ 4,271,581	R$ 4,761,404
Compulsory reserve average return	100.00%
Compulsory reserve interest rate	14.90%	12.15%

The amount of reserve that is kept in deposit at a central bank to fulfil regulatory reserve requirements.

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
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_112_c&doctype=Standard
-URIDate 2025-03-27

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