Cover Page |
6 Months Ended |
|---|---|
Jun. 30, 2025 | |
| Cover [Abstract] | |
| Document Type | 6-K |
| Entity File Number | 001-12518 |
| Entity Registrant Name | Banco Santander, S.A. |
| Entity Address, Address Line One | 28660 Boadilla del Monte (Madrid) |
| Entity Address, Country | ES |
| Entity Central Index Key | 0000891478 |
| Amendment Flag | false |
| Current Fiscal Year End Date | --12-31 |
| Document Period End Date | Jun. 30, 2025 |
| Document Fiscal Year Focus | 2025 |
| Document Fiscal Period Focus | Q2 |
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- Definition This is focus fiscal year of the document report in YYYY format. For a 2006 annual report, which may also provide financial information from prior periods, fiscal 2006 should be given as the fiscal year focus. Example: 2006. No definition available.
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- Definition For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period. The format of the date is YYYY-MM-DD. No definition available.
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- Definition A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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