Financial Instruments - Information Related to Derivative Amounts Recognized in Income (Detail) ₨ in Millions, $ in Millions |
12 Months Ended | |||
|---|---|---|---|---|
|
Mar. 31, 2025
INR (₨)
|
Mar. 31, 2025
USD ($)
|
Mar. 31, 2024
INR (₨)
|
Mar. 31, 2023
INR (₨)
|
|
| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| Derivatives gain/(loss), net | ₨ 37,644.2 | $ 440.6 | ₨ 18,558.5 | ₨ 15,366.1 |
| Interest rate derivatives | ||||
| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| Derivatives gain/(loss), net | 19,426.5 | 227.4 | 1,762.6 | 5,921.5 |
| Forward rate agreements | ||||
| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| Derivatives gain/(loss), net | 7,407.1 | 86.7 | 2,089.6 | (2.0) |
| Currency options | ||||
| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| Derivatives gain/(loss), net | 421.7 | 4.9 | 194.0 | 1,200.3 |
| Currency swaps | ||||
| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| Derivatives gain/(loss), net | 9,511.0 | 111.3 | 10,242.9 | 1,609.1 |
| Forward exchange contracts | ||||
| Derivative Instruments, Gain (Loss) [Line Items] | ||||
| Derivatives gain/(loss), net | ₨ 877.9 | $ 10.3 | ₨ 4,269.4 | ₨ 6,637.2 |