v3.26.1
Capital and financial risk management - Financial risk management (Details) - EUR (€)
€ in Millions
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Disclosure of detailed information about financial instruments [line items]      
Provisions € 1,992 € 2,496 € 2,448
Bonds having change of control clause 30,000 30,000  
Financial Guarantees      
Disclosure of detailed information about financial instruments [line items]      
Exposure from guarantee contracts 1,868 € 1,765  
Provisions € 0