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Interest income (Details) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Analysis of income and expense [abstract] |  |  |
Loans and advances, customers | € 70,830 | € 74,900 | € 67,879
Debt instruments | 15,890 | 15,431 | 13,955
Loans and advances, central banks and credit institutions | 7,599 | 8,195 | 7,229
Other interest | 7,391 | 10,486 | 12,679
Total interest income | € 101,710 | € 109,012 | € 101,742

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