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Derivative Financial Instruments and Risk Management Policies - Interest Rate Risk (Details) - EUR (€) € in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Disclosure of financial instruments by type of interest rate [line items] |  |  |
Percentage of net debt plus commitments pegged to fixed interest rates for a period greater than one year | 82.50% | 88.60% |
Percentage of net debt at floating rates or at fixed rates maturing in under one year | 17.50% |  |
Finance income (cost) | € 1,789 |  |
Decrease in net financial results from prior year | € 115 |  |
Increase in interest rate | 1.00% |  |
Decrease in interest rate | 1.00% |  |
Derivative instruments |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |
Sale of goods | € 326 | € 349 | € 894
Derivative instruments | Colombia |  |  |
Disclosure of financial instruments by type of interest rate [line items] |  |  |
Sale of goods |  | € 154 |

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