Capital and financial risk management - Market risk - Interest rate management (Details) - Interest rate risk - EUR (€) € in Millions |
Mar. 31, 2025 |
Mar. 31, 2024 |
|---|---|---|
| Capital and financial risk management | ||
| Percentage of reasonably possible increase in risk assumption | 1.00% | |
| Increase in profit before tax due to reasonably possible increase in designated risk component | € 26 | € 13 |