Deferred and current taxation - Principal components of net deferred tax (Details) - EUR (€) € in Millions |
Mar. 31, 2026 |
Mar. 31, 2025 |
Mar. 31, 2024 |
Mar. 31, 2023 |
|---|---|---|---|---|
| Disclosure of temporary difference, unused tax losses and unused tax credits [line items] | ||||
| Net deferred tax liability (asset) | € 669.2 | € 375.5 | € 359.9 | € 152.7 |
| Temporary differences on designated hedging instruments [Member] | ||||
| Disclosure of temporary difference, unused tax losses and unused tax credits [line items] | ||||
| Net deferred tax liability (asset) | 254.6 | (11.8) | 18.2 | |
| Property, plant and equipment | ||||
| Disclosure of temporary difference, unused tax losses and unused tax credits [line items] | ||||
| Net deferred tax liability (asset) | 416.0 | 388.9 | 367.1 | |
| Net operating losses | ||||
| Disclosure of temporary difference, unused tax losses and unused tax credits [line items] | ||||
| Net deferred tax liability (asset) | € (1.4) | € (1.6) | € (25.4) |