v3.25.1
Leases - Maturity profile of lease liabilities (Details) - EUR (€)
€ in Millions
12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Leases    
Undiscounted lease liability € 12,869 € 11,142
Effect of discounting (2,043) (1,470)
Lease liability 10,826 9,672
Committed future lease contracts not yet commenced    
Leases    
Undiscounted lease liability 1,464 1,339
Committed future lease contracts not yet commenced | Vantage Towers AG    
Leases    
Undiscounted lease liability € 1,102 1,031
Lease term 8 years  
Within one year    
Leases    
Undiscounted lease liability € 2,765 2,603
In more than one year but less than two years    
Leases    
Undiscounted lease liability 2,081 1,984
In more than two years but less than three years    
Leases    
Undiscounted lease liability 1,756 1,599
In more than three years but less than four years    
Leases    
Undiscounted lease liability 1,434 1,461
In more than four years but less than five years    
Leases    
Undiscounted lease liability 965 1,129
In more than five years    
Leases    
Undiscounted lease liability € 3,868 € 2,366