Revenue from Operations - Summary of Revenue (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
Mar. 31, 2023 |
|
| Disclosure Of Revenue Arising From Exchanges Of Goods Or Services [Line Items] | |||
| Revenues | $ 19,277 | $ 18,562 | $ 18,212 |
| Software Services | |||
| Disclosure Of Revenue Arising From Exchanges Of Goods Or Services [Line Items] | |||
| Revenues | 18,379 | 17,549 | 17,072 |
| Products and Platforms | |||
| Disclosure Of Revenue Arising From Exchanges Of Goods Or Services [Line Items] | |||
| Revenues | $ 898 | $ 1,013 | $ 1,140 |