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Accumulated retained earnings - Schedule of accumulated retained earnings and reserves of entities accounted for using the equity method (Details) - EUR (€) € in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Disclosure of reserves within equity [line items] |  |  |
Revaluation reserve Royal Decree-Law 7/1996 | € 0 | € 0 | € 0
Reserves of subsidiaries | € 47,937 | 47,249 | 47,669
Percentage of share capital required to be maintained in the legal reserve | 20.00% |  |
Equity Investments |  |  |
Disclosure of reserves within equity [line items] |  |  |
Restricted reserves | € 3,328 | 3,084 | 2,899
Legal reserve | 1,469 | 1,515 | 1,618
Own shares | 480 | 421 | 649
Revaluation reserve Royal Decree-Law 7/1996 | 43 | 43 | 43
Reserve for retired capital | 1,336 | 1,105 | 589
Unrestricted reserves | 31,519 | 24,186 | 16,033
Voluntary reserves | 26,357 | 20,362 | 14,284
Consolidation reserves attributable to the Bank | 5,162 | 3,824 | 1,749
Reserves of subsidiaries | 47,937 | 47,249 | 47,669
Reserves of entities accounted for using the equity method | 1,643 | 1,831 | 1,762
Accumulated retained earnings and other reserves | € 84,427 | € 76,350 | € 68,363

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- Definition A component of equity representing the reserve for the redemption of the entity's own shares. + 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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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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- Definition A component of equity representing the accumulated revaluation surplus on the revaluation of assets recognised in other comprehensive income. [Refer: Other comprehensive income] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2025-01-01 -Paragraph 85 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2025-en-r&anchor=para_85&doctype=Standard -URIDate 2025-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2025-01-01 -Paragraph 39 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2025-en-r&anchor=para_39&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition A component of equity representing reserves created based on legal requirements. + 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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- Definition A component of equity representing reserves for consolidation. + References No definition available. + Details
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- Definition Percentage of share capital required to be maintained in the legal reserve before annual required transfers can be discontinued. + References No definition available. + Details
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- Definition A component of equity representing reserves of entities accounted for using the equity method. + References No definition available. + Details
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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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- Definition A component of equity representing reserves for retired capital. + References No definition available. + Details
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- Definition A component of equity representing reserves unrestricted as to usage. + References No definition available. + Details
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- Definition A component of equity representing voluntary reserves. + References No definition available. + Details
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- Details
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