XML 222 R200.htm IDEA: XBRL DOCUMENT
v3.25.4

Fair value of financial assets and liabilities (Details 1) - BRL (R$) R$ in Thousands | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | --- | --- | ---
At fair value [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Financial Assets Measured At Fair Value Through Profit Or Loss | R$ 3,313,957 | R$ 7,123,218 | R$ 6,568,685 | R$ 3,652,114
Financial Assets Measured At Fair Value Through Other Comprehensive Income | 4,001,938 | 3,438,024 | 2,610,638 | 1,503,441
Financial Assets Measured At Fair Value Through Profit Or Loss Held For Trading | 1,926,147 | 509,368 | 914,261 | R$ 233,762
Gains Losses Realized Not Realized [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Financial Assets Measured At Fair Value Through Profit Or Loss | (283,424) | (67,560) | (50,682) |
Financial Assets Measured At Fair Value Through Other Comprehensive Income | 130,982 | (167,705) | 30,764 |
Financial Assets Measured At Fair Value Through Profit Or Loss Held For Trading | 127,254 | (214,958) | (109,800) |
Transfers To Level 3 [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Financial Assets Measured At Fair Value Through Profit Or Loss | (1,798,299) | (4,276,225) | 1,093,895 |
Financial Assets Measured At Fair Value Through Other Comprehensive Income |  | (98,568) | 1,090,459 |
Financial Assets Measured At Fair Value Through Profit Or Loss Held For Trading | (421,435) | (189,987) | 384,082 |
Additions Low [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Financial Assets Measured At Fair Value Through Profit Or Loss | (1,727,538) | 4,898,318 | 1,873,358 |
Financial Assets Measured At Fair Value Through Other Comprehensive Income | 432,932 | 1,093,659 | (14,026) |
Financial Assets Measured At Fair Value Through Profit Or Loss Held For Trading | R$ 1,710,960 | R$ 52 | R$ 406,217 |

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

X
- References No definition available. + Details
Name: | bsbr_FinancialAssetsAndLiabilitiesClassifiedAsLevelFinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncome1
Namespace Prefix: | bsbr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- References No definition available. + Details
Name: | bsbr_FinancialAssetsAndLiabilitiesClassifiedAsLevelFinancialAssetsMeasuredAtFairValueThroughProfitOrLoss1
Namespace Prefix: | bsbr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- References No definition available. + Details
Name: | bsbr_FinancialAssetsAndLiabilitiesClassifiedAsLevelFinancialAssetsMeasuredAtFairValueThroughProfitOrLossHeldForTrading1
Namespace Prefix: | bsbr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Details
Name: | ifrs-full_MeasurementAxis=ifrs-full_AtFairValueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MeasurementAxis=bsbr_GainsLossesRealizedNotRealizedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MeasurementAxis=bsbr_TransfersToLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MeasurementAxis=bsbr_AdditionsLowMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |