Other liabilities - Additional information (Details) - EUR (€) € in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Other liabilities [abstract] | |||
| Payments of lease liabilities, classified as financing activities | € 282 | € 290 | € 291 |
| Share buyback programme, liability | € 732 | € 1,275 | |