Details of Guarantees and Documentary Credits Outstanding (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Guarantor Obligations [Line Items]
Bank guarantees	₨ 1,628,699.8	$ 19,816.3	₨ 1,455,273.0
Estimated fair values of bank guarantees	(7,911.1)	(96.3)	(6,583.5)
Financial guarantees
Guarantor Obligations [Line Items]
Bank guarantees	494,191.3	6,012.8	422,406.2
Performance guarantees
Guarantor Obligations [Line Items]
Bank guarantees	519,953.0	6,326.2	417,227.2
Documentary credits
Guarantor Obligations [Line Items]
Bank guarantees	614,555.5	7,477.3	615,639.6
Estimated fair values of bank guarantees	(869.3)	(10.6)	(822.8)
Guarantees
Guarantor Obligations [Line Items]
Estimated fair values of bank guarantees	₨ (7,041.8)	$ (85.7)	₨ (5,760.7)

The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

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 https://asc.fasb.org/extlink&oid=124440162&loc=d3e12069-110248

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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.

+ References

No definition available.

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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 https://asc.fasb.org/extlink&oid=124440162&loc=d3e12201-110248

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