Segment information and information by geographical area - Revenue (Details) - EUR (€) € in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Geographical areas | |||
| Sales from operations | € 82,151 | € 88,797 | € 93,717 |
| Italy | |||
| Geographical areas | |||
| Sales from operations | 28,647 | 30,994 | 33,450 |
| Other European Union | |||
| Geographical areas | |||
| Sales from operations | 15,979 | 15,975 | 18,271 |
| Rest of Europe | |||
| Geographical areas | |||
| Sales from operations | 14,866 | 16,493 | 18,476 |
| Americas | |||
| Geographical areas | |||
| Sales from operations | 6,215 | 7,908 | 7,004 |
| Asia | |||
| Geographical areas | |||
| Sales from operations | 9,675 | 9,114 | 7,404 |
| Africa | |||
| Geographical areas | |||
| Sales from operations | 6,731 | 8,285 | 9,057 |
| Other areas | |||
| Geographical areas | |||
| Sales from operations | € 38 | € 28 | € 55 |