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Assets held for sale (Details)
€ in Millions
12 Months Ended
Mar. 31, 2021
EUR (€)
aircraft
Mar. 31, 2020
aircraft
Aug. 31, 2019
aircraft
Minimum      
Assets held for sale      
Gain on sale of aircrafts | € € 13    
Boeing 737NG aircraft      
Assets held for sale      
Aircrafts to be sold     10
Aircrafts sold 7 3