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Derivative Financial Instruments and Risk Management Policies - Breakdown of Financial Results (Details) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Disclosure of financial assets [line items] |  |  |
Total | € 41,315 | € 40,652 | € 39,993
Financial expenses on lease liabilities (see Note 20) | (504) | (445) |
Subtotal | (2,998) | (3,014) | (3,030)
Derivative instruments |  |  |
Disclosure of financial assets [line items] |  |  |
Interest income | 486 | 516 | 384
Dividends received | 39 | 29 | 25
Other financial income | 326 | 349 | 894
Total | 851 | 894 | 1,303
Changes in fair value of asset derivatives at fair value through profit or loss | 145 | 114 | 377
Changes in fair value of liability derivatives at fair value through profit or loss | (88) | (42) | (861)
Changes in the fair value of debt instruments and other assets at fair value to profit or loss | 4 | 4 | 8
Transfer from equity of results of cash flow hedges - future cash flows that are no longer expected to happen | 0 | 0 | (2)
(Loss)/Gain on fair value hedges | (226) | 246 | (1,818)
Gain/(loss) on adjustment to items hedged by fair value hedges | 224 | (292) | 1,763
Subtotal | 59 | 30 | (533)
Interest expenses | (1,796) | (1,606) | (1,548)
Financial expenses on lease liabilities (see Note 20) | (512) | (435) | (393)
Ineffective portion of cash flow hedges | (2) | (12) | (15)
Accretion of provisions and other liabilities | (389) | (489) | 276
Other financial expenses | (229) | (297) | (317)
Subtotal | (2,928) | (2,839) | (1,997)
Net finance costs excluding foreign exchange differences and inflation adjustments | € (2,018) | € (1,915) | € (1,227)

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