Aggregate Notional Principal Amounts of Bank's Outstanding Forward Exchange and Derivative Contracts (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Derivatives, Fair Value [Line Items]
Notional	₨ 15,796,689.0	$ 192,197.2	₨ 12,488,223.5
Gross Assets	121,749.4	1,481.3	80,202.3
Gross Liabilities	98,783.5	1,201.9	74,819.2
Net Fair Value	22,965.9	279.4	5,383.1
Interest rate derivatives
Derivatives, Fair Value [Line Items]
Notional	5,974,019.2	72,685.5	5,142,612.3
Gross Assets	41,148.2		28,564.1
Gross Liabilities	36,627.4		27,644.4
Net Fair Value	4,520.8	55.0	919.7
Forward rate agreements
Derivatives, Fair Value [Line Items]
Notional	140,693.0	1,711.8	50,610.7
Gross Assets	1,848.4		1,574.1
Gross Liabilities	541.4		14.8
Net Fair Value	1,307.0	15.9	1,559.3
Currency options
Derivatives, Fair Value [Line Items]
Notional	257,641.1	3,134.7	434,371.3
Gross Assets	1,402.4		1,845.1
Gross Liabilities	1,578.3		2,439.5
Net Fair Value	(175.9)	(2.1)	(594.4)
Currency swaps
Derivatives, Fair Value [Line Items]
Notional	372,114.3	4,527.5	308,757.4
Gross Assets	21,753.7		10,463.6
Gross Liabilities	7,213.4		4,312.3
Net Fair Value	14,540.3	176.9	6,151.3
Forward exchange contracts
Derivatives, Fair Value [Line Items]
Notional	9,052,221.4	110,137.7	6,551,871.8
Gross Assets	55,596.7		37,755.4
Gross Liabilities	52,823.0		40,408.2
Net Fair Value	₨ 2,773.7	$ 33.7	₨ (2,652.8)

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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