XML 254 R232.htm IDEA: XBRL DOCUMENT
v3.25.4

Related party transactions (Details Narrative) - BRL (R$) | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
IfrsStatementLineItems [Line Items] |  |  |
Management's remuneration | R$ 39,873,000 | R$ 43,124,000 | R$ 40,863,000
Board Of Directors And Executive Board [Member] |  |  |
IfrsStatementLineItems [Line Items] |  |  |
Management's remuneration | R$ 600,000,000 |  |

X
- References No definition available. + Details
Name: | bsbr_IfrsStatementLineItems
Namespace Prefix: | bsbr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of remuneration paid or payable to the entity's directors. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_112_c&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_DirectorsRemunerationExpense
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | ifrs-full_CounterpartiesAxis=bsbr_BoardOfDirectorsAndExecutiveBoardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |