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Other assets (Details) - EUR (€)
€ in Millions
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2020
Other assets      
Prepayments € 473.2 € 228.5 € 176.4
Interest receivable     2.3
Total other assets 473.2 228.5 178.7
Long term prepayments 72.0 49.0 0.0
Current prepayments for EU ETS carbon credits € 128.0 € 98.0 € 172.0