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Risk management - Disclosure of high quality liquid assets (Details) - Liquidity risk - EUR (€) € in Millions | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
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Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items] |  |  |
High-quality liquid assets-HQLAs | € 337,937 | € 351,304 | € 348,028
Cash and reserves available at central banks |  |  |
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items] |  |  |
High-quality liquid assets-HQLAs | 150,883 | 188,745 | 217,935
Marketable assets Level 1 |  |  |
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items] |  |  |
High-quality liquid assets-HQLAs | 173,744 | 150,912 | 119,043
Marketable assets Level 2A |  |  |
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items] |  |  |
High-quality liquid assets-HQLAs | 5,726 | 4,696 | 4,236
Marketable assets Level 2B |  |  |
Disclosure of maturity analysis for financial assets held for managing liquidity risk [line items] |  |  |
High-quality liquid assets-HQLAs | € 7,584 | € 6,951 | € 6,814

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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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