Insurance services - Summary of a Roll Forward of URR (Detail) ₨ in Millions, $ in Millions |
12 Months Ended | ||
|---|---|---|---|
|
Mar. 31, 2026
INR (₨)
|
Mar. 31, 2026
USD ($)
|
Mar. 31, 2025
INR (₨)
|
|
| Unearned Revenue Reserve [Line Items] | |||
| Opening balance | ₨ 3,428.1 | $ 36.5 | ₨ 988.8 |
| Capitalizations | 4,470.8 | 47.6 | 2,893.9 |
| Amortization | (811.0) | (8.6) | (316.0) |
| Experience Adjustment | (345.7) | (3.7) | (138.6) |
| Closing balance | 6,742.2 | $ 71.8 | 3,428.1 |
| Unit-Linked Life [Member] | |||
| Unearned Revenue Reserve [Line Items] | |||
| Opening balance | 3,281.8 | 945.2 | |
| Capitalizations | 4,149.4 | 2,772.3 | |
| Amortization | (759.9) | (303.5) | |
| Experience Adjustment | (332.6) | (132.2) | |
| Closing balance | 6,338.7 | 3,281.8 | |
| Unit-Linked Pension [Member] | |||
| Unearned Revenue Reserve [Line Items] | |||
| Opening balance | 146.3 | 43.6 | |
| Capitalizations | 321.4 | 121.6 | |
| Amortization | (51.1) | (12.5) | |
| Experience Adjustment | (13.1) | (6.4) | |
| Closing balance | ₨ 403.5 | ₨ 146.3 | |