Leases - Schedule of undiscounted future payments classified on a maturity basis (Details) - EUR (€) € in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Disclosure of maturity analysis of operating lease payments | ||
| Lease liabilities, undiscounted cash flows | € 1,713 | € 1,774 |
| Discounting effect | (631) | (632) |
| Total lease liabilities | 1,082 | 1,142 |
| Within one year | ||
| Disclosure of maturity analysis of operating lease payments | ||
| Lease liabilities, undiscounted cash flows | 113 | 117 |
| 2027 | ||
| Disclosure of maturity analysis of operating lease payments | ||
| Lease liabilities, undiscounted cash flows | 108 | 117 |
| In the third to fifth years | ||
| Disclosure of maturity analysis of operating lease payments | ||
| Lease liabilities, undiscounted cash flows | 296 | 319 |
| After the fifth year | ||
| Disclosure of maturity analysis of operating lease payments | ||
| Lease liabilities, undiscounted cash flows | € 1,196 | € 1,221 |