XML 196 R174.htm IDEA: XBRL DOCUMENT
v3.25.4

Obligations for pension and similar liabilities (Details 5) | 12 Months Ended
--- | ---
Dec. 31, 2025
Banesprev Plans I [Member] |
IfrsStatementLineItems [Line Items] |
Plans | 7 years 6 months 29 days
Cabesp [Member] |
IfrsStatementLineItems [Line Items] |
Plans | 10 years 3 months 29 days
Sanprev I [Member] |
IfrsStatementLineItems [Line Items] |
Plans | 7 years 14 days
A B N [Member] |
IfrsStatementLineItems [Line Items] |
Plans | 7 years 7 months 20 days
Bandeprev Basic [Member] |
IfrsStatementLineItems [Line Items] |
Plans | 5 years 6 months 3 days
Circulars [Member] |
IfrsStatementLineItems [Line Items] |
Plans | 7 years 2 months 15 days
Santander Previ [Member] |
IfrsStatementLineItems [Line Items] |
Plans | 6 years 10 days
A M Bandeprev [Member] |
IfrsStatementLineItems [Line Items] |
Plans | 8 years 3 days
C A C I B A N [Member] |
IfrsStatementLineItems [Line Items] |
Plans | 4 years 9 months 10 days
D A B [Member] |
IfrsStatementLineItems [Line Items] |
Plans | 4 years 6 months
D C A [Member] |
IfrsStatementLineItems [Line Items] |
Plans | 5 years 3 months 21 days
Lifetime Directors [Member] |
IfrsStatementLineItems [Line Items] |
Plans | 5 years 11 months 19 days
A M Fundacao Sudameris [Member] |
IfrsStatementLineItems [Line Items] |
Plans | 8 years 2 months 15 days
Health Plan For Members [Member] |
IfrsStatementLineItems [Line Items] |
Plans | 21 years 1 month 9 days
Life Insurance [Member] |
IfrsStatementLineItems [Line Items] |
Plans | 4 years 7 months 6 days

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

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

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

X
- Details
Name: | ifrs-full_NetDefinedBenefitLiabilityAssetAxis=bsbr_BanesprevPlansIMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_NetDefinedBenefitLiabilityAssetAxis=bsbr_CabespMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_NetDefinedBenefitLiabilityAssetAxis=bsbr_SanprevIMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_NetDefinedBenefitLiabilityAssetAxis=bsbr_ABNMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_NetDefinedBenefitLiabilityAssetAxis=bsbr_BandeprevBasicMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_NetDefinedBenefitLiabilityAssetAxis=bsbr_CircularsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_NetDefinedBenefitLiabilityAssetAxis=bsbr_SantanderPreviMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_NetDefinedBenefitLiabilityAssetAxis=bsbr_AMBandeprevMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_NetDefinedBenefitLiabilityAssetAxis=bsbr_CACIBANMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_NetDefinedBenefitLiabilityAssetAxis=bsbr_DABMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_NetDefinedBenefitLiabilityAssetAxis=bsbr_DCAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_NetDefinedBenefitLiabilityAssetAxis=bsbr_LifetimeDirectorsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_NetDefinedBenefitLiabilityAssetAxis=bsbr_AMFundacaoSudamerisMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_NetDefinedBenefitLiabilityAssetAxis=bsbr_HealthPlanForMembersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_NetDefinedBenefitLiabilityAssetAxis=bsbr_LifeInsuranceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |