v3.26.1
Expenses by nature - Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended
Nov. 21, 2025
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Expenses by nature [abstract]        
Employee benefits expense   $ (10,882) $ (10,165) $ (9,981)
Increase in employee benefits expense $ 143