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Note 32 Interest expense breakdown by origin (Details) - EUR (€)
€ in Millions
 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Interest expense by origin [Line Items]    
Interest expense on financial liabilities held for trading € 1,532 € 553
Interest expense on financial liabilities designated at fair value through profit or loss 51 20
Interest Expense For Financial Liabilities Measured At Amortised Cost 8,215 3,775
Interest Expense For Adjustment Interest On Accounting Coverage 296 (178)
Interest Expense For Insurance Activity 294 439
Interest Expense On Chargeable Cost To Pension Funds 59 31
Other Interest Expense 40 225
Interest expense € 10,487 € 4,865