Insurance services - Summary of Balances of and Changes in Separate Account Liabilities (Detail) ₨ in Millions, $ in Millions |
9 Months Ended | 12 Months Ended | |
|---|---|---|---|
|
Mar. 31, 2024
INR (₨)
|
Mar. 31, 2025
INR (₨)
|
Mar. 31, 2025
USD ($)
|
|
| Separate Account, Liability [Line Items] | |||
| Beginning Balance | ₨ 857,528.7 | ₨ 955,416.3 | $ 11,183.7 |
| Premiums and deposits | 116,856.2 | 190,549.4 | 2,230.4 |
| Policy Charges | (14,111.7) | (21,057.3) | (246.5) |
| Surrenders and withdrawals | (119,417.6) | (118,048.5) | (1,381.8) |
| Benefit Payments | (40,431.7) | (72,456.2) | (848.1) |
| Investment Performance | 158,152.0 | 86,785.5 | 1,015.8 |
| Other Charges | (3,159.6) | (4,907.8) | (57.4) |
| Ending Balance | 955,416.3 | 1,016,281.4 | $ 11,896.1 |
| Unit-Linked Life [Member] | |||
| Separate Account, Liability [Line Items] | |||
| Beginning Balance | 709,215.4 | 790,711.5 | |
| Premiums and deposits | 97,196.3 | 144,941.9 | |
| Policy Charges | (12,754.4) | (18,978.4) | |
| Surrenders and withdrawals | (104,102.3) | (93,686.8) | |
| Benefit Payments | (37,926.8) | (68,275.4) | |
| Investment Performance | 141,987.6 | 71,320.8 | |
| Other Charges | (2,904.3) | (4,473.8) | |
| Ending Balance | 790,711.5 | 821,559.8 | |
| Unit-Linked Pension [Member] | |||
| Separate Account, Liability [Line Items] | |||
| Beginning Balance | 55,986.3 | 55,596.3 | |
| Premiums and deposits | 3,556.3 | 7,515.3 | |
| Policy Charges | (594.4) | (789.3) | |
| Surrenders and withdrawals | (8,432.7) | (7,853.0) | |
| Benefit Payments | (2,504.9) | (4,180.8) | |
| Investment Performance | 7,709.9 | 4,643.4 | |
| Other Charges | (124.2) | (193.9) | |
| Ending Balance | 55,596.3 | 54,738.0 | |
| Group Linked [Member] | |||
| Separate Account, Liability [Line Items] | |||
| Beginning Balance | 92,327.0 | 109,108.5 | |
| Premiums and deposits | 16,103.6 | 38,092.2 | |
| Policy Charges | (762.9) | (1,289.6) | |
| Surrenders and withdrawals | (6,882.6) | (16,508.7) | |
| Benefit Payments | 0.0 | 0.0 | |
| Investment Performance | 8,454.5 | 10,821.3 | |
| Other Charges | (131.1) | (240.1) | |
| Ending Balance | ₨ 109,108.5 | ₨ 139,983.6 | |