XML 165 R143.htm IDEA: XBRL DOCUMENT
v3.25.4

Loans and advances to customers (Details Narrative) - BRL (R$) R$ in Thousands | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | --- | ---
Notes and other explanatory information [abstract] |  |  |
Financial assets measured at amortized cost | R$ 29,539,862 | R$ 28,484,030 | R$ 28,008,086
[custom:LoansAndAdvancesToClients-0] | R$ 16,768 | R$ 21,024 |

X
- References No definition available. + Details
Name: | bsbr_FinancialAssetMeasuredAtAmortizedCost
Namespace Prefix: | bsbr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | bsbr_LoansAndAdvancesToClients
Namespace Prefix: | bsbr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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