v3.25.2
Goodwill - Narrative (Details) - cash-generatingUnit
12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Disclosure of detailed information about intangible assets [line items]    
Number of CGU used in impairment testing 1 1
Goodwill | Post-tax    
Disclosure of detailed information about intangible assets [line items]    
Estimated future cash flows, projection period 10 years