v3.24.1.1.u2
Employee Benefits - Employee Benefit Costs (Details) - USD ($)
$ in Millions
12 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Mar. 31, 2022
Disclosure Of Defined Benefit Plans [Line Items]      
Employee benefit cost $ 9,981 $ 9,729 $ 8,585
Employee Benefit Cost      
Disclosure Of Defined Benefit Plans [Line Items]      
Salaries and bonus 9,729 9,481 8,383
Defined contribution plans 81 78 64
Defined benefit plans 171 170 138
Employee benefit cost $ 9,981 $ 9,729 $ 8,585