v3.26.1
Financial instruments - Fair values and risk management - Financial assets (Details) - EUR (€)
€ in Millions
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Disclosure of financial assets [line items]      
Total financial assets € 5,847.5 € 4,169.8 € 4,548.8
Current derivative assets 2,133.9 94.4 349.5
Financial instruments for which fair value is disclosed      
Disclosure of financial assets [line items]      
Total Fair Value 2,226.3 109.8 352.8
Amortized Cost      
Disclosure of financial assets [line items]      
Total financial assets 3,621.2 4,060.0 4,196.0
Cash-Flow Hedges      
Disclosure of financial assets [line items]      
Total financial assets 2,226.3 109.8 352.8
Cash and cash equivalents      
Disclosure of financial assets [line items]      
Total financial assets 2,733.4 3,863.3 3,875.4
Cash and cash equivalents | Amortized Cost      
Disclosure of financial assets [line items]      
Total financial assets 2,733.4 3,863.3 3,875.4
Cash > 3 months      
Disclosure of financial assets [line items]      
Total financial assets 812.4 100.1 237.8
Cash > 3 months | Amortized Cost      
Disclosure of financial assets [line items]      
Total financial assets 812.4 100.1 237.8
Restricted cash      
Disclosure of financial assets [line items]      
Total financial assets 31.2 23.1 6.4
Restricted cash | Amortized Cost      
Disclosure of financial assets [line items]      
Total financial assets 31.2 23.1 6.4
Foriegn currency forward contracts      
Disclosure of financial assets [line items]      
Total financial assets 128.2 90.2 147.2
Foriegn currency forward contracts | Financial instruments for which fair value is disclosed      
Disclosure of financial assets [line items]      
Total Fair Value 128.2 90.2 147.2
Foriegn currency forward contracts | Cash-Flow Hedges      
Disclosure of financial assets [line items]      
Total financial assets 128.2 90.2 147.2
Jet fuel and carbon derivative contracts      
Disclosure of financial assets [line items]      
Total financial assets 2,098.1 19.6 205.6
Jet fuel and carbon derivative contracts | Financial instruments for which fair value is disclosed      
Disclosure of financial assets [line items]      
Total Fair Value 2,098.1 19.6 205.6
Jet fuel and carbon derivative contracts | Cash-Flow Hedges      
Disclosure of financial assets [line items]      
Total financial assets 2,098.1 19.6 205.6
Trade receivables      
Disclosure of financial assets [line items]      
Total financial assets 44.2 73.5 76.4
Trade receivables | Amortized Cost      
Disclosure of financial assets [line items]      
Total financial assets € 44.2 € 73.5 € 76.4