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Gross Realized Gains and Gross Realized Losses from Sales of Available for Sale Debt Securities and Dividends and Interest on Such Securities (Detail) ₨ in Millions, $ in Millions | 12 Months Ended
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Mar. 31, 2021 INR (₨) | Mar. 31, 2021 USD ($) | Mar. 31, 2020 INR (₨) | Mar. 31, 2019 INR (₨)
Schedule of Available-for-sale Securities [Line Items] |  |  |  |
Gross realized gains on sale | ₨ 56,439.4 | $ 771.8 | ₨ 26,128.1 | ₨ 3,788.1
Gross realized losses on sale | (514.2) | (7.2) | (301.9) | (1,192.1)
Realized gains (losses), net | 55,925.2 | 764.6 | 25,826.2 | 2,596.0
Dividends and interest | 226,690.9 | 3,099.4 | 198,383.2 | 190,992.5
Total | ₨ 282,616.1 | $ 3,864.0 | ₨ 224,209.4 | ₨ 193,588.5

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- Definition The total amount of operating dividend and interest income and the difference between gross realized gains and losses on available-for-sale securities. + References No definition available. + Details
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- Definition Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27357-111563 + Details
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- Definition Amount of realized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27357-111563 + Details
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- Definition Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), investment in debt security measured at amortized cost (held-to-maturity) and investment in debt security measured at fair value with change in fair value recognized in net income (trading). Excludes other-than-temporary impairment (OTTI). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(3)(d)) -URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 + Details
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- Definition Amount of interest income, amortization of premium and accretion of discount on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale); classified as operating. + References No definition available. + Details
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