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Segment Information - Detail of assets and liabilities of VMO2 (Details) - EUR (€) € in Millions | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | --- | ---
Disclosure of joint ventures [line items] |  |  |
Fixed Assets | € 21,439 | € 22,944 | € 23,714
Rights of use | 7,907 | 8,448 | 8,279
Financial assets and other non-currents assets | 7,403 | 7,268 |
Deferred tax assets | 6,673 | 6,240 | 4,884
Current financial assets | 1,800 | 1,078 |
Total allocated assets | 100,502 | 104,324 |
Non-current financial liabilities | 33,192 | 33,360 |
Non-current lease liabilities | 6,077 | 6,708 |
Deferred tax liabilities | 2,905 | 2,702 | € 3,067
Current financial liabilities | 5,590 | 3,701 |
Current lease liabilities | 2,226 | 2,239 |
VMO2 |  |  |
Disclosure of joint ventures [line items] |  |  |
Fixed Assets | 40,079 | 38,817 |
Rights of use | 1,073 | 773 |
Financial assets and other non-currents assets | 1,481 | 1,741 |
Deferred tax assets | 448 | 366 |
Current financial assets | 660 | 569 |
Total allocated assets | 48,247 | 46,455 |
Non-current financial liabilities | 21,754 | 21,061 |
Non-current lease liabilities | 950 | 663 |
Deferred tax liabilities | 1 | 1 |
Current financial liabilities | 4,970 | 4,165 |
Current lease liabilities | 197 | 201 |
Total allocated liabilities | € 32,804 | € 30,727 |

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