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Other Assets - Other Assets Disclosure (Parenthetical) (Detail) ₨ in Millions, $ in Millions | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Mar. 31, 2025 INR (₨) | Mar. 31, 2024 INR (₨) | Mar. 31, 2025 USD ($) | Mar. 31, 2024 USD ($) | Jun. 30, 2023 INR (₨)
Other Assets Disclosure [Line Items] |  |  |  |  |  |
Other assets | [1] | ₨ 709,095.4 | ₨ 546,542.0 | $ 8,300.3 |  |
Unrealized gain/(loss) recognized in non-interest revenue–other, net |  | (159.3) | 11,759.4 |  |  |
Deferred policy acquistion costs |  | 148,175.6 | 60,531.9 | $ 1,734.5 | $ 708.6 | ₨ 0.0
Other Assets |  |  |  |  |  |
Other Assets Disclosure [Line Items] |  |  |  |  |  |
Reinsurance assets |  | 104,321.2 | 105,661.6 |  |  |
Deferred policy acquistion costs |  | 148,175.6 | 60,531.9 |  |  |
Equity securities |  |  |  |  |  |
Other Assets Disclosure [Line Items] |  |  |  |  |  |
Other assets |  | 381,931.6 | 317,593.5 |  |  |
Equity securities | Non Marketable Equity Securities [Member] |  |  |  |  |  |
Other Assets Disclosure [Line Items] |  |  |  |  |  |
Other assets |  | ₨ 18,558.0 | ₨ 14,646.7 |  |  |
[1] | Others include equity securities and affiliates with carrying value amounting to Rs. 317,593.5 million and Rs. 381,931.6 million as of March 31, 2024 and March 31, 2025, respectively. Equity securities include non-marketable equity securities carried at cost of Rs. 14,646.7 million and Rs. 18,558.0 million as of March 31, 2024 and March 31, 2025, respectively. Unrealized gain/(loss) recognized in non-interest revenue–other, net amount to Rs. 11,759.4 million and Rs. (159.3) million for the fiscal years ended March 31, 2024 and March 31, 2025, respectively. Further, Others also includes reinsurance assets amounting to Rs. 105,661.6 million and Rs. 104,321.2 million and deferred acquisition assets amounting to Rs. 60,531.9 million and Rs. 148,175.6 million as of March 31, 2024 and March 31, 2025, respectively.

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- Definition Amount of deferred policy acquisition cost capitalized on contract remaining in force. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 65 -Paragraph 2 -Subparagraph (g)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480016/944-40-65-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479432/944-30-50-2B Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479401/944-30-55-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(7)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 45 -Paragraph 1 -SubTopic 825 -Topic 944 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478219/944-825-45-1 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479432/944-30-50-2B + Details
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- Definition Amount, after valuation allowance, recoverable under reinsurance contracts including premium paid under reinsurance contracts. Examples include, but are not limited to, settled and unsettled claims, incurred but not reported losses, loss adjustment expense, premium paid, policy benefits and policy reserves. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479838/944-20-50-5 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 310 -Name Accounting Standards Codification -Section 45 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477409/944-310-45-5 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(6)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
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