v3.24.1.1.u2
Employee Benefits - Summary of Cost Recognized in Net Profit in Statement of Comprehensive Income Apportioned (Details) - USD ($)
$ in Millions
 12 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Mar. 31, 2022
Disclosure Of Defined Benefit Plans [Line Items]      
Cost $ 9,981 $ 9,729 $ 8,585
Gratuity      
Disclosure Of Defined Benefit Plans [Line Items]      
Defined benefit plans 37 34 28
Gratuity | Cost of Sales      
Disclosure Of Defined Benefit Plans [Line Items]      
Defined benefit plans 34 31 25
Gratuity | Sales and Marketing Expenses      
Disclosure Of Defined Benefit Plans [Line Items]      
Defined benefit plans 2 2 2
Gratuity | Administrative Expenses      
Disclosure Of Defined Benefit Plans [Line Items]      
Defined benefit plans 1 1 1
Pension      
Disclosure Of Defined Benefit Plans [Line Items]      
Defined benefit plans 2 5 7
Pension | Cost of Sales      
Disclosure Of Defined Benefit Plans [Line Items]      
Defined benefit plans 2 5 6
Pension | Sales and Marketing Expenses      
Disclosure Of Defined Benefit Plans [Line Items]      
Defined benefit plans     1
Superannuation      
Disclosure Of Defined Benefit Plans [Line Items]      
Defined benefit plans 62 60 49
Superannuation | Cost of Sales      
Disclosure Of Defined Benefit Plans [Line Items]      
Defined benefit plans 56 55 44
Superannuation | Sales and Marketing Expenses      
Disclosure Of Defined Benefit Plans [Line Items]      
Defined benefit plans 4 3 3
Superannuation | Administrative Expenses      
Disclosure Of Defined Benefit Plans [Line Items]      
Defined benefit plans 2 2 2
Provident Fund      
Disclosure Of Defined Benefit Plans [Line Items]      
Defined benefit plans 152 148 118
Provident Fund | Cost of Sales      
Disclosure Of Defined Benefit Plans [Line Items]      
Defined benefit plans 137 134 106
Provident Fund | Sales and Marketing Expenses      
Disclosure Of Defined Benefit Plans [Line Items]      
Defined benefit plans 10 9 8
Provident Fund | Administrative Expenses      
Disclosure Of Defined Benefit Plans [Line Items]      
Defined benefit plans 5 5 4
Employee Benefit Cost      
Disclosure Of Defined Benefit Plans [Line Items]      
Cost 9,981 9,729 8,585
Employee Benefit Cost | Cost of Sales      
Disclosure Of Defined Benefit Plans [Line Items]      
Cost 8,998 8,826 7,714
Employee Benefit Cost | Sales and Marketing Expenses      
Disclosure Of Defined Benefit Plans [Line Items]      
Cost 656 598 572
Employee Benefit Cost | Administrative Expenses      
Disclosure Of Defined Benefit Plans [Line Items]      
Cost $ 327 $ 305 $ 299