Banco Santander, S.A.
COMPANY
6-K
FORM
2026-04-01
FILING DATE
2025-12-31
FY PERIOD END
18652
FACTS
SIC 6029
Filing Software Workiva
CIK 0000891478
Taxonomy SEC IFRS 2025  
SIC 6029
CIK 0000891478
Filing Software Workiva
Taxonomy SEC IFRS 2025  
Standard Concepts
775
Extended Concepts
1573
67%
Extended Concepts
Errors
0
What are errors?
What are errors?
Indicate problems with an XBRL formatted filing that are sufficient grounds for SEC rejection of the XBRL portion of the filing.
Data Quality Errors
0
What are data quality errors?
What are data quality errors?
Indicate areas that may not meet the standards set by the Data Quality Committee (DQC), and may reveal areas where the XBRL can be improved.
Possible Issues
3
WARNING
14 fact(s) appearing in ix:hidden were eligible for transformation: san:NumberOfSubsidiariesTaxResidentInTheUK, san:NumberOfSubsidiariesTaxResidentInTheUKLiquidatedDuringPeriod, san:PeriodOfVoluntarySharesaveSchemeMonthlyEmployeeContributions, san:RecoverableAmountsOfCertainCashGeneratingUnitsPeriodUsedInEstimate, san:SubordinatedIssueInitialInterestRateTerm, san:SubordinatedIssueTerm, san:VariableRemunerationDeferralPeriod
WARNING
Presentation group http://www.santander.com/role/RiskmanagementCreditriskDetails with 17 axes could have more than 1 billion cells. Split it up and see [EXG 7.3 Fact Selection] to see how to reduce the number of combinations by selecting fewer members for each axis.
WARNING
There are 90882 cells; skipping transformation.
What are possible issues?
What are possible issues?
Indicate areas of interest as to the quality of an XBRL formatted filing, and in some cases reveal opportunities for improvement of the XBRL filing.
SEC: Filing | Interactive Data