XML 197 R175.htm IDEA: XBRL DOCUMENT
v3.25.4

Obligations for pension and similar liabilities (Details Narrative) - BRL (R$) R$ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Obligations For Pension And Similar Liabilities |  |
[custom:TotalProvisionsForPensionPlansNetActuarialProvisionsOne] | R$ 1,357,203 | R$ 1,364,437
Sponsoring amount | R$ 61,717 | R$ 67,619

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

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

X
- References No definition available. + Details
Name: | bsbr_TotalProvisionsForPensionPlansNetActuarialProvisionsOne
Namespace Prefix: | bsbr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration