Financial instruments - Fair value and risk management - Derivative financial instruments designated in cash flow hedges (Details) - Cash Flow Hedges - EUR (€) € in Millions |
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
|---|---|---|---|
| Disclosure of detailed information about hedging instruments [line items] | |||
| Derivative financial assets (liabilities), net | € 2,076.2 | € (117.4) | € 170.7 |
| Foreign currency risk | Property, plant and equipment - aircraft additions | |||
| Disclosure of detailed information about hedging instruments [line items] | |||
| Derivative financial assets (liabilities), net | 84.8 | 7.7 | 60.3 |
| Foreign currency risk | Fuel and oil operating expenses | |||
| Disclosure of detailed information about hedging instruments [line items] | |||
| Derivative financial assets (liabilities), net | (36.2) | 79.8 | 83.6 |
| Commodity price risk | Fuel and carbon operating expenses | |||
| Disclosure of detailed information about hedging instruments [line items] | |||
| Derivative financial assets (liabilities), net | € 2,027.6 | € (204.9) | € 26.8 |