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v3.26.1

Additional disclosures - Parent company condensed balance sheets (Details) - EUR (€) € in Millions | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | --- | --- | ---
ASSETS |  |  |  |
Cash equivalents at central banks | € 135,330 | € 170,914 | € 199,932 |
Financial assets held for trading | 252,318 | 230,253 | 176,921 |
Premises and equipment, net | 26,416 | 31,212 | 32,926 |
Other assets | 8,719 | 8,559 | 8,856 |
TOTAL ASSETS | 1,867,515 | 1,837,081 | 1,797,062 |
LIABILITIES |  |  |  |
Other liabilities | 15,937 | 16,344 | 17,598 |
TOTAL LIABILITIES | 1,754,767 | 1,729,754 | 1,692,821 |
EQUITY |  |  |  |
Capital stock | 7,345 | 7,576 | 8,092 | € 8,397
TOTAL EQUITY | 112,748 | 107,327 | 104,241 | € 97,585
TOTAL LIABILITIES AND EQUITY | 1,867,515 | 1,837,081 | 1,797,062 |
Banco Santander, S.A. | Reportable Legal Entities |  |  |  |
ASSETS |  |  |  |
Cash equivalents at central banks | 144,292 | 157,665 | 172,524 |
Financial assets held for trading | 154,939 | 135,758 | 102,296 |
Investment securities | 91,217 | 77,230 | 63,325 |
Net loans and leases | 323,253 | 301,937 | 298,068 |
Investment in affiliated companies | 98,317 | 100,045 | 99,326 |
Premises and equipment, net | 5,825 | 6,219 | 6,368 |
Other assets | 18,941 | 15,986 | 15,435 |
TOTAL ASSETS | 836,784 | 794,840 | 757,342 |
LIABILITIES |  |  |  |
Deposits | 415,898 | 393,787 | 398,374 |
Short-term debt | 129,462 | 88,263 | 70,771 |
Long-term debt | 114,756 | 137,549 | 129,258 |
Total debt | 244,218 | 225,812 | 200,029 |
Other liabilities | 94,325 | 96,909 | 84,065 |
TOTAL LIABILITIES | 754,441 | 716,508 | 682,468 |
EQUITY |  |  |  |
Capital stock | 7,345 | 7,576 | 8,092 |
Retained earnings and other reserves | 74,998 | 70,756 | 66,782 |
TOTAL EQUITY | 82,343 | 78,332 | 74,874 |
TOTAL LIABILITIES AND EQUITY | 836,784 | 794,840 | 757,342 |
Banco Santander, S.A. | Reportable Legal Entities | Bank subsidiaries |  |  |  |
ASSETS |  |  |  |
Cash equivalents at central banks | 11,517 | 5,952 | 6,834 |
Investment securities | 13,607 | 16,191 | 16,137 |
Investment in affiliated companies | 71,796 | 74,624 | 74,016 |
LIABILITIES |  |  |  |
Deposits | 8,773 | 6,645 | 7,832 |
Total debt | 3,994 | 100 | 0 |
Banco Santander, S.A. | Reportable Legal Entities | Non-bank subsidiaries |  |  |  |
ASSETS |  |  |  |
Investment securities | 1,697 | 1,005 | 1,229 |
Net loans and leases | 23,340 | 21,127 | 22,435 |
Investment in affiliated companies | 26,521 | 25,421 | 25,310 |
LIABILITIES |  |  |  |
Deposits | 26,412 | 19,176 | 14,610 |
Total debt | € 1,363 | € 2,428 | € 1,816 |

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- Definition The amount of current borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Note Expiry date 2027-01-01 -Name IAS -Number 1 -IssueDate 2025-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_55&doctype=Standard -URIDate 2025-03-27 + Details
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Period Type: | instant

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- Definition The amount of liability for deposits held by the entity. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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Namespace Prefix: | san_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Loans And Leases, Net + References No definition available. + Details
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Namespace Prefix: | san_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition A component of equity representing the entity's cumulative undistributed earnings or deficit and other reserves. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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- Details
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- Details
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- Details
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