Commitments and Contingencies - Movement in Provision for Credit Card and Debit Card Reward Points (Detail) - Credit card and debit card reward points ₨ in Millions, $ in Millions |
12 Months Ended | ||
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Mar. 31, 2025
INR (₨)
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Mar. 31, 2025
USD ($)
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Mar. 31, 2024
INR (₨)
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| Valuation and Qualifying Accounts Disclosure [Line Items] | |||
| Opening provision of reward points | ₨ 8,635.5 | $ 101.0 | ₨ 6,963.2 |
| Provision made during the year | 9,335.1 | 109.3 | 7,921.1 |
| Utilization/write back of provision | (7,496.2) | (87.7) | (6,248.8) |
| Closing provision of reward points | 10,474.4 | 122.6 | 8,635.5 |
| Change in Rate of Accrual of Reward Points | |||
| Valuation and Qualifying Accounts Disclosure [Line Items] | |||
| Effect of change in rate of accrual of reward points | ₨ 0.0 | $ 0.0 | ₨ 0.0 |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of increase (decrease) in valuation and qualifying accounts and reserves from adjustment. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of valuation and qualifying accounts and reserves. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of decrease in valuation and qualifying accounts and reserves. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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