XML 167 R145.htm IDEA: XBRL DOCUMENT v3.25.4

Investments in associates and joint ventures (Details)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Banco Rci Brasil Sa Current Company Name Of Rci Brasil Leasing [Member] | Jointly Controlled By Banco Santander [Member]
IfrsStatementLineItems [Line Items]
Name of joint venture	Banco RCI Brasil S.A.
Activity	Bank
Country	Brasil
Equity interest	39.89%	39.89%
Estruturadora Brasileira De Projetos S A [Member] | Jointly Controlled By Banco Santander [Member]
IfrsStatementLineItems [Line Items]
Name of joint venture	Estruturadora Brasileira de Projetos S.A. - EBP
Activity	Other Activities
Country	Brasil
Equity interest	11.11%	11.11%
Gestora De Inteligencia De Credito [Member] | Jointly Controlled By Banco Santander [Member]
IfrsStatementLineItems [Line Items]
Name of joint venture	Gestora de Inteligência de Crédito
Activity	Credit Bureau
Country	Brasil
Equity interest	15.56%	15.56%
Hyundai Corretora De Seguros [Member] | Jointly Controlled By Santander Sa Servios Tcnicos Administrativos De Corretagem De Seguros Santander Servios [Member]
IfrsStatementLineItems [Line Items]
Name of joint venture	Hyundai Corretora de Seguros
Activity	Insurance Brokerage
Country	Brasil
Equity interest	50.00%	50.00%
Loop Gestao De Patios S A [Member] | Subsidiary Of Webmotors S A [Member]
IfrsStatementLineItems [Line Items]
Name of joint venture	Loop Gestão de Pátios S.A. (Loop)
Activity	Services
Country	Brasil
Equity interest	51.00%	51.00%
Car 10 Tecnologiae Informacao S A [Member] | Subsidiary Of Webmotors S A [Member]
IfrsStatementLineItems [Line Items]
Name of joint venture	Car10 Tecnologia e Informação S.A. (Car10)
Activity	Technology
Country	Brasil
Equity interest	66.67%	66.67%
Pag 10 Fomento Mercantil Ltda [Member] | Subsidiary Of Car 10 Tecnologiae Informacao S A [Member]
IfrsStatementLineItems [Line Items]
Name of joint venture	Pag10 Fomento Mercantil Ltda.
Activity	Technology
Country	Brasil
Equity interest	100.00%	100.00%
Tbnet Comercio Locacaoe Administracao Ltda [Member] | Subsidiary Of Tecnologia Bancaria S A [Member]
IfrsStatementLineItems [Line Items]
Name of joint venture	Tbnet Comércio, Locação e Administração Ltda. (Tbnet)
Activity	Other Activities
Country	Brasil
Equity interest	100.00%	100.00%
Tec Ban Servicos Integrados Ltda [Member] | Subsidiary Of Tecnologia Bancaria S A [Member]
IfrsStatementLineItems [Line Items]
Name of joint venture	TecBan Serviços Integrados Ltda.
Activity	Other Activities
Country	Brasil
Equity interest	100.00%	100.00%
Tbforte Segurancae Transporte De Valores Ltda [Member] | Subsidiary Of Tbnet [Member]
IfrsStatementLineItems [Line Items]
Name of joint venture	Tbforte Segurança e Transporte de Valores Ltda. (Tbforte)
Activity	Other Activities
Country	Brasil
Equity interest	100.00%	100.00%
Nuclea S A [Member] | Significant Influence Of Banco Santander [Member]
IfrsStatementLineItems [Line Items]
Name of joint venture	Núclea S.A.
Activity	Other Activities
Country	Brasil
Equity interest	17.53%	17.53%
Pluxee Beneficios Brasil S A [Member] | Significant Influence Of Banco Santander [Member]
IfrsStatementLineItems [Line Items]
Name of joint venture	Pluxee Beneficios Brasil S.A.
Activity	Benefits
Country	Brasil
Equity interest	20.00%	20.00%
Santander Auto S A [Member] | Jointly Controlled By Banco Santander [Member]
IfrsStatementLineItems [Line Items]
Name of joint venture	Santander Auto S.A.
Activity	Other Activities
Country	Brasil
Equity interest	50.00%	50.00%
Tecnologia Bancaria S A T E C B A N [Member] | Significant Influence Of Santander Corretora De Seguros [Member]
IfrsStatementLineItems [Line Items]
Name of joint venture	Tecnologia Bancária S.A. - TECBAN
Activity	Other Activities
Country	Brasil
Equity interest	18.98%	18.98%
C S D Central De Servicos De Registre Deposito Aos Mercados Financeiroe De Capitais S A [Member] | Significant Influence Of Santander Corretora De Seguros [Member]
IfrsStatementLineItems [Line Items]
Name of joint venture	CSD Central de Serviços de Registro e Depósito aos Mercados Financeiro e de Capitais S.A
Activity	Other Activities
Country	Brasil
Equity interest	18.35%	20.00%
Biomas Servicos Ambientais Restauracaoe Carbono S A [Member] | Significant Influence Of Santander Corretora De Seguros [Member]
IfrsStatementLineItems [Line Items]
Name of joint venture	Biomas - Serviços Ambientais, Restauração e Carbono S.A.
Activity	Other Activities
Country	Brasil
Equity interest	16.66%	16.66%
Webmotors S A [Member] | Significant Influence Of Santander Corretora De Seguros [Member]
IfrsStatementLineItems [Line Items]
Name of joint venture	Webmotors S.A.
Activity	Other Activities
Country	Brasil
Equity interest	30.00%	30.00%

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_JointVentureActivity
Namespace Prefix:	bsbr_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The country in which a joint venture of the entity is incorporated. [Refer: Total for all joint ventures [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2024-01-01
-Paragraph 16
-Subparagraph b
-Clause ii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2024-en-r&anchor=para_16_b_ii&doctype=Standard
-URIDate 2024-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2024-01-01
-Paragraph 17
-Subparagraph b
-Clause ii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2024-en-r&anchor=para_17_b_ii&doctype=Standard
-URIDate 2024-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2024-01-01
-Paragraph 21
-Subparagraph a
-Clause iii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_21_a_iii&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_CountryOfIncorporationOfJointVenture
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The name of a joint venture. [Refer: Total for all joint ventures [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2024-01-01
-Paragraph 17
-Subparagraph b
-Clause i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2024-en-r&anchor=para_17_b_i&doctype=Standard
-URIDate 2024-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2024-01-01
-Paragraph 16
-Subparagraph b
-Clause i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2024-en-r&anchor=para_16_b_i&doctype=Standard
-URIDate 2024-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2024-01-01
-Paragraph 21
-Subparagraph a
-Clause i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_21_a_i&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_NameOfJointVenture
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The proportion of ownership interest in a joint venture attributable to the entity. [Refer: Total for all joint ventures [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2024-01-01
-Paragraph 17
-Subparagraph b
-Clause iii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2024-en-r&anchor=para_17_b_iii&doctype=Standard
-URIDate 2024-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 27
-IssueDate 2024-01-01
-Paragraph 16
-Subparagraph b
-Clause iii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2024-en-r&anchor=para_16_b_iii&doctype=Standard
-URIDate 2024-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2024-01-01
-Paragraph 21
-Subparagraph a
-Clause iv
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_21_a_iv&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_ProportionOfOwnershipInterestInJointVenture
Namespace Prefix:	ifrs-full_
Data Type:	dtr-2022:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	bsbr_ControlledAxis=bsbr_BancoRciBrasilSaCurrentCompanyNameOfRciBrasilLeasingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	bsbr_JointlyControlledAxis=bsbr_JointlyControlledByBancoSantanderMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	bsbr_ControlledAxis=bsbr_EstruturadoraBrasileiraDeProjetosSAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	bsbr_ControlledAxis=bsbr_GestoraDeInteligenciaDeCreditoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	bsbr_ControlledAxis=bsbr_HyundaiCorretoraDeSegurosMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	bsbr_JointlyControlledAxis=bsbr_JointlyControlledBySantanderSaServiosTcnicosAdministrativosDeCorretagemDeSegurosSantanderServiosMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	bsbr_ControlledAxis=bsbr_LoopGestaoDePatiosSAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	bsbr_JointlyControlledAxis=bsbr_SubsidiaryOfWebmotorsSAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	bsbr_ControlledAxis=bsbr_Car10TecnologiaeInformacaoSAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	bsbr_ControlledAxis=bsbr_Pag10FomentoMercantilLtdaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	bsbr_JointlyControlledAxis=bsbr_SubsidiaryOfCar10TecnologiaeInformacaoSAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	bsbr_ControlledAxis=bsbr_TbnetComercioLocacaoeAdministracaoLtdaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	bsbr_JointlyControlledAxis=bsbr_SubsidiaryOfTecnologiaBancariaSAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	bsbr_ControlledAxis=bsbr_TecBanServicosIntegradosLtdaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	bsbr_ControlledAxis=bsbr_TbforteSegurancaeTransporteDeValoresLtdaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	bsbr_JointlyControlledAxis=bsbr_SubsidiaryOfTbnetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	bsbr_ControlledAxis=bsbr_NucleaSAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	bsbr_JointlyControlledAxis=bsbr_SignificantInfluenceOfBancoSantanderMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	bsbr_ControlledAxis=bsbr_PluxeeBeneficiosBrasilSAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	bsbr_ControlledAxis=bsbr_SantanderAutoSAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	bsbr_ControlledAxis=bsbr_TecnologiaBancariaSATECBANMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	bsbr_JointlyControlledAxis=bsbr_SignificantInfluenceOfSantanderCorretoraDeSegurosMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	bsbr_ControlledAxis=bsbr_CSDCentralDeServicosDeRegistreDepositoAosMercadosFinanceiroeDeCapitaisSAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	bsbr_ControlledAxis=bsbr_BiomasServicosAmbientaisRestauracaoeCarbonoSAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	bsbr_ControlledAxis=bsbr_WebmotorsSAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: