XML 131 R109.htm IDEA: XBRL DOCUMENT
v3.25.4

Accounting policies and determination criteria (Details 2) | 12 Months Ended
--- | ---
Dec. 31, 2025
Accounting Policies And Determination Criteria |
Buildings for own use | 4.00%
Furniture | 10.00%
Fixtures | 10.00%
Office and IT equipment | 20.00%
Improvements on third-party properties | 4% or until the contract’s expiration date

X
- References No definition available. + Details
Name: | bsbr_DepreciationRateOfBuildingsForOwnUse
Namespace Prefix: | bsbr_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | bsbr_DepreciationRateOfFixtures
Namespace Prefix: | bsbr_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | bsbr_DepreciationRateOfFurniture
Namespace Prefix: | bsbr_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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

X
- References No definition available. + Details
Name: | bsbr_DepreciationRateOfOfficeAndItEquipment
Namespace Prefix: | bsbr_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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