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Details of Guarantees and Documentary Credits Outstanding (Detail) ₨ in Millions, $ in Millions | Mar. 31, 2021 INR (₨) | Mar. 31, 2021 USD ($) | Mar. 31, 2020 INR (₨)
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Guarantor Obligations [Line Items] |  |  |
Bank guarantees | ₨ 1,131,739.2 | $ 15,473.6 | ₨ 1,034,155.3
Estimated fair values of bank guarantees | (6,044.1) | (82.6) | (4,680.7)
Financial guarantees |  |  |
Guarantor Obligations [Line Items] |  |  |
Bank guarantees | 334,040.8 | 4,567.1 | 263,758.0
Performance guarantees |  |  |
Guarantor Obligations [Line Items] |  |  |
Bank guarantees | 421,162.2 | 5,758.3 | 330,164.6
Documentary credits |  |  |
Guarantor Obligations [Line Items] |  |  |
Bank guarantees | 376,536.2 | 5,148.2 | 440,232.7
Estimated fair values of documentary credits | (543.4) | (7.4) | (488.8)
Guarantees |  |  |
Guarantor Obligations [Line Items] |  |  |
Estimated fair values of bank guarantees | ₨ (5,500.7) | $ (75.2) | ₨ (4,191.9)

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- Definition The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121555522&loc=d3e12069-110248 + Details
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- Definition Fair value portion of guarantee, including, but not limited to, financial standby letter of credit, fair value guarantee, guarantee of collection of scheduled contractual cash flows from financial assets, and contracts that contingently require the guarantor to make payments or perform services. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121555522&loc=d3e12201-110248 + Details
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