v3.25.1
Post employment benefits - Fair value of pension assets (Details) - EUR (€)
€ in Millions
12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Post employment benefits    
Investment fund € 572 € 580
Actual return on plan assets 238 121
Defined Benefit Pension Plan    
Post employment benefits    
Cash and cash equivalents 61 52
Derivatives 572 580
Assets 4,854 5,148
Defined Benefit Pension Plan | Level1 of Fair Value Hierarchy [Member]    
Post employment benefits    
Equity investments 471 261
Debt instruments 1,151 928
Property 17 16
Defined Benefit Pension Plan | Level 2 of fair value hierarchy [member]    
Post employment benefits    
Equity investments 37 293
Debt instruments 683 944
Property 313 374
Derivatives [1] 927 1,040
Annuity policies € 622 € 660
[1] Derivatives include collateral held in the form of cash. Assets are valued using ‘level 2’ inputs under IFRS 13 ‘Fair Value Measurement’ principles and classified as unquoted accordingly.