XML 216 R194.htm IDEA: XBRL DOCUMENT
v3.25.4

Shareholders' equity (Details 2) - BRL (R$) R$ in Thousands | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Shareholders Equity |  |
Treasury shares at beginning of the period | 19,451 | 27,193
Shares Acquisitions |  | 2,770
Payment - Share-based compensation | (5,785) | (10,511)
Treasury shares at end of the period | 13,666 | 19,452
Balance of Treasury Shares in thousand of Reais | R$ 717,789 | R$ 882,936
Emission Costs in thousands of Reais | 1,771 | 1,771
Balance of Treasury Shares in thousands of Reais | R$ 719,560 | R$ 884,707

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

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

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

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

X
- References No definition available. + Details
Name: | bsbr_PaymentSharebasedCompensation
Namespace Prefix: | bsbr_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | bsbr_SharesAcquisitions
Namespace Prefix: | bsbr_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | bsbr_TreasurySharesAtBeginningOfThePeriod
Namespace Prefix: | bsbr_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | bsbr_TreasurySharesAtEndOfThePeriod
Namespace Prefix: | bsbr_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant