Revenue from Operations - Summary of Disaggregated Revenues From Contracts with Customers (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
Mar. 31, 2023 |
|
| Disclosure Of Disaggregated Revenues from Contracts with Customers by Geography, Offerings and Contract Type [Line Items] | |||
| Revenues | $ 19,277 | $ 18,562 | $ 18,212 |
| North America | |||
| Disclosure Of Disaggregated Revenues from Contracts with Customers by Geography, Offerings and Contract Type [Line Items] | |||
| Revenues | 11,166 | 11,163 | 11,262 |
| Europe | |||
| Disclosure Of Disaggregated Revenues from Contracts with Customers by Geography, Offerings and Contract Type [Line Items] | |||
| Revenues | 5,745 | 5,105 | 4,670 |
| INDIA | |||
| Disclosure Of Disaggregated Revenues from Contracts with Customers by Geography, Offerings and Contract Type [Line Items] | |||
| Revenues | 593 | 469 | 478 |
| Rest of the World | |||
| Disclosure Of Disaggregated Revenues from Contracts with Customers by Geography, Offerings and Contract Type [Line Items] | |||
| Revenues | $ 1,773 | $ 1,825 | $ 1,802 |