Hedge accounting (Details Narrative) - BRL (R$) R$ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
IfrsStatementLineItems [Line Items]
Risk factor designated coverage ratio	100.00%
Balance reserve in cash flow hedge for which hedge accounting is no longer applied	R$ 53	R$ 167
Foreign currency conversion reserve	1,462	23
Remaining Accumulated [Member]
IfrsStatementLineItems [Line Items]
Fair value hedge adjustments	226	51
Effect of fair value hedge adjustments	R$ 8	R$ 38

A component of equity representing the reserve of cash flow hedges in relation to hedging relationships for which hedge accounting is no longer applied. [Refer: Reserve of cash flow hedges]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2024-01-01
-Paragraph 24B
-Subparagraph b
-Clause iii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_24B_b_iii&doctype=Standard
-URIDate 2024-03-27

Name:	ifrs-full_ReserveOfCashFlowHedgesHedgingRelationshipsForWhichHedgeAccountingIsNoLongerApplied
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant