Leases - Details of leases in the consolidated balance sheet (Details) - EUR (€) € in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Disclosure of quantitative information about right-of-use assets [line items] | ||
| Total right-of-use assets | € 932 | € 968 |
| Lease liabilities | ||
| Non-current | 969 | 1,025 |
| Current | 113 | 117 |
| Total lease liabilities | 1,082 | 1,142 |
| Land and buildings | ||
| Disclosure of quantitative information about right-of-use assets [line items] | ||
| Total right-of-use assets | 917 | 957 |
| Machinery | ||
| Disclosure of quantitative information about right-of-use assets [line items] | ||
| Total right-of-use assets | 2 | 3 |
| Computer equipment | ||
| Disclosure of quantitative information about right-of-use assets [line items] | ||
| Total right-of-use assets | 3 | 1 |
| Vehicles | ||
| Disclosure of quantitative information about right-of-use assets [line items] | ||
| Total right-of-use assets | € 10 | € 7 |