HDFC Bank Limited (HDB) 20-F 29 Jun 23 2023 FY Annual report (foreign) Financial data

Cover Page

Cover Page	12 Months Ended
	Mar. 31, 2023 shares
Document Information [Line Items]
Document Type	20-F
Amendment Flag	false
Document Period End Date	Mar. 31, 2023
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	FY
Trading Symbol	HDB
Entity Registrant Name	HDFC BANK LIMITED
Entity Central Index Key	0001144967
Current Fiscal Year End Date	--03-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding	5,579,742,786
Security Exchange Name	NYSE
Title of 12(b) Security	American Depositary Shares, each representing three Equity Shares, Par value Rs. 1.0 per share
Document Annual Report	true
Document Transition Report	false
Document Shell Company Report	false
Entity Interactive Data Current	Yes
Entity File Number	001-15216
Entity Incorporation, State or Country Code	K7
Entity Address, Address Line One	HDFC Bank House
Entity Address, Address Line Two	Senapati Bapat Marg, Lower Parel
Entity Address, City or Town	Mumbai
Entity Address, Postal Zip Code	400013
Entity Address, Country	IN
Document Registration Statement	false
Document Accounting Standard	U.S. GAAP
ICFR Auditor Attestation Flag	true
Auditor Name	KPMG Assurance and Consulting Services LLP
Auditor Location	Mumbai, India
Auditor Firm ID	2115
Business Contact [Member]
Document Information [Line Items]
Contact Personnel Name	Santosh Haldankar
Contact Personnel Email Address	Santosh.Haldankar@hdfcbank.com
Entity Address, Address Line One	HDFC Bank Ltd; Legal & Secretarial Dept; 2nd floor, Zenith House
Entity Address, Address Line Two	Opp. Race Course Gate No. 5 & 6, Keshavrao Khadye Marg
Entity Address, Address Line Three	Mahalaxmi (west)
Entity Address, City or Town	Mumbai
Entity Address, Postal Zip Code	400 034
Entity Address, Country	IN
Country Region	91
City Area Code	22
Local Phone Number	3976-0711

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS ₨ in Millions, $ in Millions	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
ASSETS:
Cash and due from banks, and restricted cash	₨ 1,387,395.2	$ 16,880.3	₨ 1,122,031.1
Investments held for trading, at fair value	135,831.1	1,652.6	53,199.5
Investments available for sale debt securities, at fair value [includes restricted investments of Rs. 1,648,213.8 and Rs. 2,070,953.6 (US$ 25,197.1), as of March 31, 2022 and March 31, 2023, respectively]	4,878,844	59,360.6	4,388,563.1
Securities purchased under agreements to resell	455,275.4	5,539.3	373,053.3
Loans [net of allowance of Rs. 372,671.8 and Rs. 365,164.5 (US$ 4,443.0), as of March 31, 2022 and March 31, 2023, respectively]	17,052,927.9	207,481.7	14,036,872.2
Accrued interest receivable	186,091.2	2,264.2	134,467.7
Property and equipment, net	87,569.7	1,065.6	65,826.4
Goodwill	74,937.9	911.8	74,937.9
Other assets	1,496,751.6	18,210.8	864,754.3
Total assets	25,755,624	313,366.9	21,113,705.5
Liabilities:
Interest-bearing deposits	16,097,459.3	195,856.7	13,197,979.7
Non-interest-bearing deposits	2,729,176.3	33,205.7	2,382,052.2
Total deposits	18,826,635.6	229,062.4	15,580,031.9
Securities sold under repurchase agreements	0	0	151,844.9
Short-term borrowings	1,089,897.5	13,260.7	554,167.6
Accrued interest payable	112,463.2	1,368.3	82,412.8
Long-term debt	2,054,436.4	24,996.2	1,554,333.4
Accrued expenses and other liabilities	754,353.4	9,178.2	681,461.5
Total liabilities	22,837,786.1	277,865.8	18,604,252.1
Commitments and contingencies (see note: 26)
Shareholders' equity:
Equity shares: par value Rs. 1.0 each; authorized 6,500,000,000 shares and 6,500,000,000 shares; issued and outstanding 5,545,540,976 shares and 5,579,742,786 shares, as of March 31, 2022 and March 31, 2023, respectively	5,579.7	67.9	5,545.5
Additional paid-in capital	883,371.9	10,747.9	834,615.2
Retained earnings	1,447,784.1	17,615.1	1,153,191.1
Statutory reserve	643,738.7	7,832.3	529,279.1
Accumulated other comprehensive income/ (loss)	(68,273.7)	(830.7)	(17,792.5)
Total HDFC Bank Limited shareholders' equity	2,912,200.7	35,432.5	2,504,838.4
Noncontrolling interest in subsidiaries	5,637.2	68.6	4,615
Total shareholders' equity	2,917,837.9	35,501.1	2,509,453.4
Total liabilities and shareholders' equity	₨ 25,755,624	$ 313,366.9	₨ 21,113,705.5

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) ₨ in Millions, $ in Millions	Mar. 31, 2023 INR (₨) ₨ / shares shares	Mar. 31, 2023 USD ($) shares	Mar. 31, 2022 INR (₨) ₨ / shares shares	Mar. 31, 2022 USD ($) shares
Investments available for sale, at fair value, restricted investments	₨ 2,070,953.6	$ 25,197.1	₨ 1,648,213.8
Loans, allowance	₨ 365,164.5	$ 4,443	₨ 372,671.8	$ 4,534.3
Equity shares, par value | ₨ / shares	₨ 1		₨ 1
Equity shares, authorized	6,500,000,000	6,500,000,000	6,500,000,000	6,500,000,000
Equity shares, issued	5,579,742,786	5,579,742,786	5,545,540,976	5,545,540,976
Equity shares, outstanding	5,579,742,786	5,579,742,786	5,545,540,976	5,545,540,976

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨) ₨ / shares	Mar. 31, 2023 USD ($) $ / shares	Mar. 31, 2022 INR (₨) ₨ / shares	Mar. 31, 2021 INR (₨) ₨ / shares
Interest and dividend revenue:
Loans	₨ 1,351,818	$ 16,447.5	₨ 1,057,925.6	₨ 1,017,047.8
Trading securities	2,964.6	36.1	1,647.5	3,373.8
Available for sale debt securities	304,566.7	3,705.6	240,943	226,690.9
Other	30,177.4	367.2	32,620.9	28,855.1
Total interest and dividend revenue	1,689,526.7	20,556.4	1,333,137	1,275,967.6
Interest expense:
Deposits	615,108.9	7,484	489,010.1	501,260.2
Short-term borrowings	58,142.8	707.4	17,675.2	12,531.8
Long-term debt	101,587.8	1,236	77,456.3	78,361.5
Other	698.7	8.5	155.9	127.6
Total interest expense	775,538.2	9,435.9	584,297.5	592,281.1
Net interest revenue	913,988.5	11,120.5	748,839.5	683,686.5
Provision for credit losses	74,213.8	903	126,979.5	154,233.4
Net interest revenue after provision for credit losses	839,774.7	10,217.5	621,860	529,453.1
Non-interest revenue, net:
Fees and commissions	239,603.7	2,915.2	202,979.5	165,410.4
Trading securities gain/(loss), net	479.9	5.8	2,455.5	1,481
Realized gain/(loss) on sales of available for sale debt securities, net	(720.3)	(8.8)	16,745.8	55,925.2
Allowance on available for sale debt securities	(70.9)	(0.9)	2,915.1	(2,915.1)
Foreign exchange transactions	25,547	310.8	34,851.4	27,762.6
Derivatives gain/(loss), net	15,366.1	187	1,422	(3,253)
Other, net	11,181	136	9,204.9	8,564.6
Total non-interest revenue, net	291,386.5	3,545.1	270,574.2	252,975.7
Total revenue, net	1,131,161.2	13,762.6	892,434.2	782,428.8
Non-interest expense:
Salaries and staff benefits	199,726.8	2,430.1	165,287.7	143,755.9
Premises and equipment	45,069.9	548.4	36,236	35,763.2
Depreciation and amortization	23,489.7	285.8	16,816.9	13,860.2
Administrative and other	200,493	2,439.4	154,931.4	149,223
Total non-interest expense	468,779.4	5,703.7	373,272	342,602.3
Income before income tax expense	662,381.8	8,058.9	519,162.2	439,826.5
Income tax expense	166,117.4	2,021.1	132,559.2	113,820.1
Net income before noncontrolling interest	496,264.4	6,037.8	386,603	326,006.4
Less: Net income attributable to shareholders of noncontrolling interest	817.5	9.9	602.6	29.3
Net income attributable to HDFC Bank Limited	₨ 495,446.9	$ 6,027.9	₨ 386,000.4	₨ 325,977.1
Per share information:
Earnings per equity share—basic | (per share)	₨ 89.02	$ 1.08	₨ 69.76	₨ 59.27
Earnings per equity share—diluted | (per share)	88.68	1.07	69.38	59.02
Per ADS information (where 1 ADS represents 3 shares): (see note: 28)
Earnings per ADS—basic | (per share)	267.06	3.24	209.28	177.81
Earnings per ADS—diluted | (per share)	266.04	3.21	208.14	177.06
Dividends declared per equity share | (per share)	₨ 19	$ 0.23	₨ 15.5	₨ 6.5

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)	Mar. 31, 2021 INR (₨)
Net income before noncontrolling interest	₨ 496,264.4	$ 6,037.8	₨ 386,603	₨ 326,006.4
Foreign currency translation adjustment:
Net unrealized gain/ (loss) arising during the period [net of tax Rs. 381.0, Rs. (436.4) and Rs. (1,136.5), as of March 31, 2021, March 31, 2022 and March 31, 2023, respectively]	3,378.5	41.1	1,297.5	(1,132.8)
Available for sale debt securities:
Net unrealized gain/ (loss) arising during the period [net of tax Rs. 249.0, Rs. 12,138.8 and Rs. 17,666.8, as of March 31, 2021, March 31, 2022 and March 31, 2023, respectively]	(52,522.8)	(639)	(36,088.6)	(740.6)
Reclassification adjustment for net (gain)/ loss included in net income [net of tax Rs. 7,827.8, Rs. 3,426.8 and Rs. 449.7, as of March 31, 2021, March 31, 2022 and March 31, 2023, respectively]	(1,336.9)	(16.3)	(10,187.7)	(23,271.9)
Other comprehensive income, net of tax	(50,481.2)	(614.2)	(44,978.8)	(25,145.3)
Total comprehensive income	445,783.2	5,423.6	341,624.2	300,861.1
Less: Comprehensive income attributable to shareholders of noncontrolling interest	817.5	9.9	602.6	29.3
Comprehensive income attributable to HDFC Bank Limited	₨ 444,965.7	$ 5,413.7	₨ 341,021.6	₨ 300,831.8

CONSOLIDATED STATEMENTS OF CO_2

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - INR (₨) ₨ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Net unrealized gain (loss) arising during the period, tax	₨ (1,136.5)	₨ (436.4)	₨ 381
Net unrealized gain (loss) arising during the period, tax	17,666.8	12,138.8	249
Reclassification adjustment for net (gain) loss included in net income, tax	₨ 449.7	₨ 3,426.8	₨ 7,827.8

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)	Mar. 31, 2021 INR (₨)
Cash flows from operating activities:
Net income before noncontrolling interest	₨ 496,264.4	$ 6,037.8	₨ 386,603	₨ 326,006.4
Adjustment to reconcile net income to net cash provided by operating activities
Provision for credit losses	74,213.8	903	126,979.5	154,233.4
Depreciation and amortization	23,489.7	285.8	16,816.9	13,860.2
Amortization of deferred customer acquisition costs and fees	13,284.8	161.6	10,912.3	7,930.2
Amortization of premium (discount) on investments	7,845.9	95.5	8,493.3	5,875.3
Allowance on available for sale debt securities	70.9	0.9	(2,915.1)	2,915.1
Deferred tax expense/ (benefit)	12,280.9	149.4	(9,887.3)	(8,267.3)
Other gains, net	(8,714.9)	(106)	(7,206.5)	(7,428.4)
Share-based compensation expense	14,014.6	170.5	13,874.5	10,603.5
Net realized (gain)/ loss on sale of available for sale debt securities	720.3	8.8	(16,745.8)	(55,925.2)
(Gain)/ loss on disposal of property and equipment, net	(80.6)	(1)	(0.9)	(16.2)
Unrealized exchange (gain)/ loss	276.7	3.4	(4,813)	(356.8)
Net change in:
Investments held for trading	(87,892)	(1,069.4)	48,845.7	388,530.5
Accrued interest receivable	(51,395.9)	(625.3)	(15,640.8)	(15,804.6)
Other assets	(113,657.6)	(1,382.9)	(26,227.6)	82,993.4
Accrued interest payable	29,891.6	363.7	4,417.8	(2,073.9)
Accrued expense and other liabilities	66,588	810.2	47,512.2	18,700.6
Net cash provided by operating activities	477,200.6	5,806	581,018.2	921,776.2
Cash flows from investing activities:
Term placements, net	(498,561.2)	(6,066)	(366,297.2)	4,168
Activity in available for sale debt securities:
Purchases	(1,595,296.1)	(19,409.9)	(1,736,498.7)	(3,217,140.1)
Proceeds from sales	36,463.8	443.7	766,585	1,609,149.3
Maturities, prepayments and calls	994,010.6	12,094.1	807,572.1	784,327.6
Net change in repurchase agreements and reverse repurchase agreements	(234,067)	(2,847.9)	(307,207.6)	(171,982.8)
Loans purchased	(526,272.5)	(6,403.1)	(282,420.1)	(189,797.8)
Repayments on loans purchased	337,760.9	4,109.5	156,441.9	124,275.6
Increase in loans originated, net of principal collections	(2,864,884.7)	(34,856.9)	(2,328,833.2)	(1,446,355.1)
Additions to property and equipment	(43,620.3)	(530.7)	(26,324.4)	(17,806.5)
Proceeds from sale or disposal of property and equipment	426.8	5.2	199.1	152.8
Activity in equity securities, net	1,256.7	15.3	14,503.3	(140.7)
Net cash used in investing activities	(4,392,783)	(53,446.7)	(3,302,279.8)	(2,521,149.7)
Cash flows from financing activities:
Net increase in deposits	3,224,774.3	39,235.6	2,237,238.5	1,882,763.1
Net increase/ (decrease) in short-term borrowings	535,729.9	6,518.2	314,735.9	(138,024.7)
Proceeds from issue of shares by a subsidiary to noncontrolling interests	822.7	10	691.8	492.4
Proceeds from issuance of long-term debt	1,022,933.1	12,446	722,908.9	481,989.2
Repayment of long-term debt	(558,113.6)	(6,790.5)	(353,325.7)	(326,285)
Proceeds from issuance of equity shares for options exercised	34,158.3	415.6	26,097.3	17,601
Payment of dividends	(86,394.3)	(1,051.2)	(36,239.2)	(166.6)
Net cash provided by financing activities	4,173,910.4	50,783.7	2,912,107.5	1,918,369.4
Effect of exchange rate changes on cash and due from banks, and restricted cash	7,036.1	85.6	490.5	(262.2)
Net change in cash and due from banks, and restricted cash	265,364.1	3,228.6	191,336.4	318,733.7
Cash and due from banks, and restricted cash, beginning of year	1,122,031.1	13,651.7	930,694.7	611,961
Cash and due from banks, and restricted cash, end of year	1,387,395.2	16,880.3	1,122,031.1	930,694.7
Supplementary cash flow information:
Interest paid	745,487.8	9,070.3	579,853.8	594,390.9
Income taxes paid, net of refunds	163,674.9	1,991.4	148,381.6	130,214.5
Non-cash investment activities
Payable for purchase of property and equipment	7,440.6	90.5	5,483.3	2,061.2
Trade date sale receivable of available for sale debt securities	₨ 0	$ 0	₨ 749.8	₨ 0
Operating Lease, Description	Operating lease right-of-use assets Refer to note 26— “Commitments and contingencies—Lease commitments” for more information and balances as at March 31, 2023.	Operating lease right-of-use assets Refer to note 26— “Commitments and contingencies—Lease commitments” for more information and balances as at March 31, 2023.

CONSOLIDATED STATEMENTS OF SHAR

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY ₨ in Millions, $ in Millions	INR (₨) shares	USD ($) shares	Revision of Prior Period, Change in Accounting Principle, Adjustment [Member] INR (₨)	[1]	Equity Shares INR (₨) shares	Equity Shares USD ($) shares	Additional Paid in Capital INR (₨)	Additional Paid in Capital USD ($)	Retained Earnings INR (₨)	Retained Earnings USD ($)	Retained Earnings Revision of Prior Period, Change in Accounting Principle, Adjustment [Member] INR (₨)	[1]	Statutory Reserve INR (₨)	[2]	Statutory Reserve USD ($)	[2]	Accumulated Other Comprehensive Income/ (Loss) INR (₨)	Accumulated Other Comprehensive Income/ (Loss) USD ($)	Total HDFC Bank Limited Shareholders' Equity INR (₨)	Total HDFC Bank Limited Shareholders' Equity USD ($)	Total HDFC Bank Limited Shareholders' Equity Revision of Prior Period, Change in Accounting Principle, Adjustment [Member] INR (₨)	[1]	Noncontrolling Interest INR (₨)	Noncontrolling Interest USD ($)
Balance at Mar. 31, 2020	₨ 1,896,493.8		₨ (62,480.4)		₨ 5,483.3		₨ 765,888.6		₨ 713,340.6		₨ (62,480.4)		₨ 356,038.3				₨ 52,331.6		₨ 1,893,082.4		₨ (62,480.4)		₨ 3,411.4
Balance at Mar. 31, 2020 | shares					5,483,286,460	5,483,286,460
Shares issued upon exercise of options	17,601				₨ 29.5		17,571.5												17,601
Shares issued upon exercise of options (in shares) | shares					29,490,022	29,490,022
Share-based compensation	10,603.5						10,603.5												10,603.5
Dividends	(166.6)								(166.6)										(166.6)
Change in ownership interest in subsidiary	0						156.7												156.7				(156.7)
Shares issued to noncontrolling interest	492.4																						492.4
Transfer to statutory reserve	0								(78,797)				78,797						0
Net income	326,006.4								325,977.1										325,977.1				29.3
Net change in accumulated other comprehensive income	(25,145.3)																(25,145.3)		(25,145.3)
Balance at Mar. 31, 2021	2,163,404.8				₨ 5,512.8		794,220.3		897,873.7				434,835.3				27,186.3		2,159,628.4				3,776.4
Balance at Mar. 31, 2021 | shares					5,512,776,482	5,512,776,482
Shares issued upon exercise of options	26,097.3				₨ 32.7		26,064.6												26,097.3
Shares issued upon exercise of options (in shares) | shares					32,764,494	32,764,494
Share-based compensation	13,874.5						13,874.5												13,874.5
Dividends	(36,239.2)								(36,239.2)										(36,239.2)
Change in ownership interest in subsidiary	0						455.8												455.8				(455.8)
Shares issued to noncontrolling interest	691.8																						691.8
Transfer to statutory reserve	0								(94,443.8)				94,443.8
Net income	386,603								386,000.4										386,000.4				602.6
Net change in accumulated other comprehensive income	(44,978.8)																(44,978.8)		(44,978.8)
Balance at Mar. 31, 2022	₨ 2,509,453.4				₨ 5,545.5		834,615.2		1,153,191.1				529,279.1				(17,792.5)		2,504,838.4				4,615
Balance at Mar. 31, 2022 | shares	5,545,540,976	5,545,540,976			5,545,540,976	5,545,540,976
Shares issued upon exercise of options	₨ 34,158.3				₨ 34.2		34,124.1												34,158.3
Shares issued upon exercise of options (in shares) | shares					34,201,810	34,201,810
Share-based compensation	14,014.6						14,014.6												14,014.6
Dividends	(86,394.3)								(86,394.3)										(86,394.3)
Change in ownership interest in subsidiary	0						618												618				(618)
Shares issued to noncontrolling interest	822.7																		0				822.7
Transfer to statutory reserve	0								(114,459.6)				114,459.6						0
Net income	496,264.4	$ 6,037.8							495,446.9										495,446.9				817.5
Net change in accumulated other comprehensive income	(50,481.2)	(614.2)															(50,481.2)		(50,481.2)
Balance at Mar. 31, 2023	₨ 2,917,837.9	$ 35,501.1			₨ 5,579.7	$ 67.9	₨ 883,371.9	$ 10,747.9	₨ 1,447,784.1	$ 17,615.1			₨ 643,738.7		$ 7,832.3		₨ (68,273.7)	$ (830.7)	₨ 2,912,200.7	$ 35,432.5			₨ 5,637.2	$ 68.6
Balance at Mar. 31, 2023 | shares	5,579,742,786	5,579,742,786			5,579,742,786	5,579,742,786
[1]Effective April 1, 2020, the Bank adopted ASU2016-13 Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (see notes 2g, 2i, and 20).[2]Under local regulations, the Bank is required to transfer 25% of its profit after tax (per Indian GAAP) to a non-distributable statutory reserve and to meet certain other conditions in order to pay dividends without prior RBI approval.

Bank overview

Bank overview	12 Months Ended
	Mar. 31, 2023
Bank overview	1. Bank overview HDFC Bank Limited (the “Bank”) was incorporated in August 1994 with its registered office in Mumbai, India. The Bank is a banking company governed by India’s Banking Regulation Act, 1949. The Bank’s shares are listed on the BSE Limited (formerly known as Bombay Stock Exchange Limited) and The National Stock Exchange of India Ltd. Its American Depositary Shares (“ADS”) are listed on the New York Stock Exchange. The Bank’s largest shareholder is Housing Development Finance Corporation Limited (“HDFC Limited”), which, along with its subsidiaries, owns 21.0% and 20.9% of the Bank’s equity as of March 31, 2022 and March 31, 2023, respectively. The remainder of the Bank’s equity is widely held by the public and by foreign and Indian institutional investors. The Bank’s principal business activities are retail banking, wholesale banking and treasury services. The Bank’s retail banking division provides a variety of deposit products, as well as loans, credit cards, debit cards, third-party mutual funds and insurance, depositary services, trade finance, foreign exchange and derivative services and sale of gold bars. Through its wholesale banking operations, the Bank provides loans, deposit products, documentary credits, guarantees, bullion trading, foreign exchange, and derivative products. It also provides cash management services, clearing and settlement services for stock exchanges, tax and other collections for the government, custody services for mutual funds and correspondent banking services. The Bank’s treasury group manages its debt securities and money market operations and its foreign exchange and derivative products.

Summary of significant accounti

Summary of significant accounting policies	12 Months Ended
	Mar. 31, 2023
Summary of significant accounting policies	2. Summary of significant accounting policies a. Principles of consolidation The consolidated financial statements include the accounts of HDFC Bank Limited and its subsidiaries. The Bank consolidates subsidiaries in which, directly or indirectly, it holds more than 50% of the voting rights and/or has control. Entities where the Bank holds 20% to 50% of the voting rights and/or has the ability to exercise significant influence are accounted for under the equity method. These investments are included in other assets and the Bank’s proportionate share of income or loss is included in n b. Basis of presentation These financial statements have been prepared in accordance with the Generally Accepted Accounting Principles in the United States of America (“US GAAP”). US GAAP differs in certain material respects from Generally Accepted Accounting Principles in India, the requirements of India’s Banking Regulation Act 1949 and related regulations issued by the Reserve Bank of India (“RBI”) (collectively “Indian GAAP”), which form the basis of the statutory general purpose financial statements of the Bank in India. Principal differences, insofar as they relate to the Bank, include the determination of the allowance for credit losses, classification and valuation of investments, accounting for deferred taxes, stock-based compensation, loan origination fees, derivative financial instruments, business combination, lease accounting and the presentation format and disclosures of the financial statements and related notes. c. Use of estimates The preparation of financial statements in conformity with US GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of these financial statements and the reported amounts of revenues and expenses for the years presented. Actual results could differ from these estimates. Material estimates included in these financial statements that are susceptible to change include the allowance for credit losses, the valuation of unquoted investments, impairment in securities, valuation of derivatives, stock-based compensation, unrecognized tax benefits, valuation of lease liabilities and impairment assessment of goodwill. d. Cash and due from banks, and restricted cash Cash and due from banks comprise of cash and deposit with banks that have original maturities of 90 days or less. The Bank has captioned cash and cash equivalent as “cash and due from banks, and restricted cash” on the consolidated balance sheets. Cash and due from banks includes restricted cash (see note 3). e. Customer acquisition costs Customer acquisition costs principally consist of commissions paid to third-party referral agents who source retail loans and such costs are deferred and amortized as a yield adjustment over the life of the loans. Advertising and marketing expenses incurred to solicit new business are expensed as incurred. f. Investments in securities Investments consist of securities purchased as part of the Bank’s treasury operations, such as government securities and other debt securities, and investments purchased as part of the Bank’s wholesale banking operations, such as credit substitute securities issued by the Bank’s wholesale banking customers. Credit substitute securities typically consist of commercial paper and debentures issued by the same customers with whom the Bank has a lending relationship in its wholesale banking business. Investment decisions for credit substitute securities are subject to the same credit approval processes as for loans, and the Bank bears the same customer credit risk as it does for loans extended to those customers. Additionally, the yield and maturity terms are generally directly negotiated by the Bank with the issuer. As the Bank’s exposures to such securities are similar to its exposures on its loan portfolio, additional disclosures have been provided on impairment status in note 7 and on concentrations of credit risk in note 10. All other securities, including mortgage-and asset-backed securities, are actively managed as part of the Bank’s treasury operations. The issuers of such securities are either government, public financial institutions or private issuers. These investments are typically purchased from the market, and debt securities are generally publicly-rated. Securities that are held principally for resale in the near term are classified as held for trading (“HFT”) and are carried at fair value, with changes in fair value recorded in net income. Debt securities that management has the positive intent and ability to hold to maturity are classified as held to maturity (“HTM”) and are carried at amortized cost. All debt securities that are not classified as HTM or HFT are classified as available for sale (“AFS”) debt securities and are carried at fair value. Unrealized gains and losses on such securities, net of applicable taxes, are reported in accumulated other comprehensive income/(loss), a separate component of shareholders’ equity. Equity securities are classified under other assets. Marketable securities are measured at fair value and any change in fair value is Fair values are based on market quotations, where a market quotation is available or otherwise based on present values at current interest rates for such investments. Transfers between categories are recorded at fair value on the date of the transfer. g. Impairment of debt securities The Bank conducts a review of all AFS debt securities with fair value below their carrying value or with zero loss expectation. The Bank evaluates whether the decline in fair value has resulted from credit losses or other factors. In making this assessment, management considers the extent to which fair value is less than amortized cost, any changes to the rating of the security by a rating agency, and adverse conditions specifically related to the security, among other factors. If the assessment indicates that a credit loss exists, the present value of cash flows to be collected from the security are compared to the amortized cost basis of the security. If the present value of cash flows expected to be collected is less than the amortized cost basis, a credit loss exists and an allowance for credit losses is recorded through a provision for credit loss expense, limited by the amount that fair value is less than the amortized cost basis. Any impairment that has not been recorded through an allowance for credit losses is recognized in other comprehensive income. The allowance is increased or decreased if credit conditions subsequently worsen or improve. A reversal of credit losses is recognized in earnings. The Bank recognizes the entire difference between amortized cost basis and fair value in earnings for impaired AFS debt securities that the Bank has an intent to sell or for which the Bank believes it will more-likely-than-not be required to sell prior to recovery of the amortized cost basis. The Bank applied ASC 326 to AFS debt securities when other-than-temporary impairment has been recognized before adoption. Amortized cost of a security, including the security’s effective interest rate where an other-than-temporary impairment had been recognized up to March 31, 2020, has remained unchanged. Amounts previously recognized in accumulated other comprehensive income (“AOCI”) as of the adoption date that relate to improvements in cash flows continue to be accreted to interest income over the remaining life of the security on a level-yield basis. Recoveries of amounts previously written off relating to improvements in cash flows after the date of adoption are recorded as income in the period received. The Bank does not record an allowance on accrued interest receivables on the balance sheet due to its policy to reverse interest income on debt securities in a timely manner in line with the Bank’s non-accrual and past due policies and also on any debt security classified as non-performing. The Bank does not purchase debt securities with credit deterioration. h. Loans The Bank grants retail and wholesale loans to customers. Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are reported at their outstanding unpaid principal balances adjusted for an allowance for credit losses. Loan origination fees and certain direct origination costs are deferred and recognized as adjustments to net income over the lives of the related loans. Interest is accrued on the unpaid principal balance and is included in interest income. Loans are generally placed on “non-accrual” status when interest or principal payments are ninety days past due or if they are considered non-performing, at which time no further interest is accrued and any unrealized interest recognized in the income statement is reversed. Interest income and principal payments on loans placed on non-accrual status are recognized when received. Loans are returned to accrual status when all principal and interest amounts contractually due are brought current and future payments are reasonably assured. i. Allowance for credit losses The Bank provides an allowance for credit losses based on management’s estimate of losses inherent in the loan portfolio which includes troubled debt restructuring. The allowance for credit losses consists of allowances for retail loans and wholesale loans. The Bank’s allowance for credit losses comprises: • the allowance for loan losses, which covers the Bank’s loan portfolios and is presented separately on the balance sheet in Loans, • the allowance for lending-related commitments, which is recognized on the balance sheet in Accrued expenses and other liabilities, • the allowance for credit losses on investment securities, which covers the Bank’s AFS debt securities and is recognized on the balance sheet in Investments AFS debt securities; and • the allowance for credit losses on other financial assets measured at amortized cost, and other off-balance sheet credit exposures, which is recognized on the balance sheet in Accrued expenses and other liabilities. All changes in the allowance for credit losses are recognized in the income statement. The Bank’s policies used to determine its allowance for credit losses and its allowance for lending-related commitments are described in the following paragraph: The Bank’s portfolio is bifurcated into Retail and Wholesale portfolios, wherein the Retail portfolio is segmented into homogenous pools using various factors such as nature of product, delinquencies, and other demographic and behavioral variables of the borrowers. The wholesale portfolio is segmented into various risk grades on the basis of a host of quantitative and qualitative factors including financial performance, industry risk, business risk and management quality. The allowance for loan-related losses and allowance for lending-related commitments represents expected credit losses over the remaining expected life of outstanding loans and lending-related commitments that are not unconditionally cancellable. The Bank does not record an allowance for future draws on unconditionally cancellable lending-related commitments (e.g., credit cards). The Bank does not record an allowance on accrued interest receivables on the balance sheet due to its policy to reverse interest income on loans more than 90 days past due and in the case of agricultural loans more than 365 The estimate of expected credit losses includes expected recoveries of amounts previously charged off or expected to be charged off, even if such recoveries result in a negative allowance. The Retail loans are charged off against allowances typically when the account becomes 150 to 1,083 days past due depending on the type of loan. The defined delinquency levels at which major loan types are charged off are 150 days past due for personal loans and credit card receivables, 180 days for auto loans, commercial vehicle and construction equipment finance, 720 days past due for housing loans and on a customer by customer basis in respect of retail business banking when management believes that any future cash flows from these loans are remote including realization of collateral, if applicable, and where any restructuring or any other settlement arrangements were not feasible. The Wholesale loans are charged off against the allowance when management believes that the loan balance may not be recovered, including realization of collateral, if applicable, and where any restructuring or any other settlement arrangements were not feasible. Subsequent recoveries, if any, against write-off cases, are adjusted to provision for credit losses in the consolidated statement of income. Wholesale loans are considered non-performing when, based on current information and events, it is probable that the Bank will be unable to collect scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by management in determining non-performance include payment status, the financial condition of the borrower, the value of collateral held, and the probability of collecting scheduled principal and interest payments when due. Wholesale loans that experienced insignificant payment delays and payment shortfalls are generally not classified as non-performing but are placed on a surveillance watch list and closely monitored for deterioration. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record, market information, and the amount of the shortfall in relation to the principal and interest owed. These factors are considered by the Bank for selection of loans for credit reviews and assessment of allowance. In order to estimate the allowance, the Bank primarily relies on its risk-segmentation models, which are also an integral part of the Bank’s risk management framework. Risk segmentation aims to group homogenous exposures together to allow for collective assessment of expected losses. Expected Loss estimation under collective assessment, is primarily based on Probability of Default (“PD”), Loss given Default (“LGD”) and Exposure at Default (“EAD”) estimates. The Bank has modeled its PD estimates at the aforementioned granularity for its retail and wholesale portfolios and has also created the remaining expected life structure of the same for computation of credit losses. The Bank’s off-balance sheet credit exposures include unfunded loan commitments, financial guarantees, including standby letters of credit, and other similar instruments. For off-balance sheet credit exposures, the Bank recognizes an allowance for credit loss (“ACL”) associated with the unfunded amounts. The Bank does not recognize an ACL for commitments that are unconditionally cancellable at the Bank’s discretion. ACL for off-balance sheet credit exposures are reported as a liability in accrued expenses and other liabilities on the consolidated balance sheet. ACL in such cases is measured for the remaining contractual term, adjusted for prepayments, of the financial asset (including off-balance sheet credit exposures) using historical experience, current conditions, and reasonable and supportable forecasts. Collective and individual assessments Management estimates the allowance balance using relevant available information, from internal and external sources, relating to historical experience, current conditions, and reasonable and supportable forecasts. Historical loan default and loss experience provides the basis for the estimation of expected credit losses. Adjustments to historical loss information incorporate management’s view of current conditions and forecasts. The methodology for estimating the amount of credit losses reported in the allowance for credit losses has two basic components: first, a pooled component for expected credit losses for pools of loans that share similar risk characteristics and second an asset-specific component involving loans that do not share risk characteristics and the measurement of expected credit losses for such individual loans. As an integral part of the credit process, the Bank has a rating model appropriate to its retail and wholesale credit segments. The Bank monitors credit quality within its segments based on primary credit quality indicators. This internal rating (model scale) is updated at least annually. The majority of the Bank’s credit exposures share risk characteristics with other similar exposures, and as a result are collectively assessed for allowance (“portfolio-based component”). If an exposure does not share risk characteristics with other exposures, the Bank generally estimates expected credit losses on an individual basis, considering expected repayment and conditions impacting that individual exposure (“asset-specific component”). The asset-specific component covers loans modified or reasonably expected to be modified in a troubled debt restructuring (“TDR”), collateral-dependent loans, and borrowers with financial difficulties. Portfolio-based component (Pooled Loans) The portfolio-based component begins with a quantitative calculation that considers the likelihood of the borrower changing delinquency status or moving from one risk rating to another. The quantitative calculation covers expected credit losses over an instrument’s expected life and is estimated by applying credit loss factors to the Bank’s exposure at default. Apart from its historical experience, the Bank seeks to incorporate any reasonable and supportable information regarding the prevalent and future economic and operating conditions, and their impact on credit losses for the Bank into its allowance. The Bank therefore includes in its estimation the use of quantitative statistical models to predict the impact of macro-economic variables, on defaults. The Bank relies on a single macro-economic variable that is relevant to the specific pool of loans to develop a reasonable and supportable forecast specific to the relevant macro-economic variable for the expected performance of the pool. In deploying these models the Bank has assessed the impact of an exhaustive set of macro-economic variables (such key variables being GDP, Private Final Consumption Expenditure, Gross Fixed Capital Formation and Index of Industrial Production (“IIP”)) on its expected losses, and uses macro-economic forecasts surveyed and published by the Reserve Bank of India: Centre for Monitoring Indian Economy for this assessment. As the macro-economic forecasts are published for a year the Bank reverts to the historical average default rate beyond this period over a straight-line basis. Any adjustments needed to the modeled expected losses in the quantitative calculations are addressed through a qualitative adjustment. Qualitative adjustment, among other things includes specific portfolio characteristics; expected sectoral performance, expected impact of internal strategies or external events on the product/segment; model limitations; idiosyncratic events; and other relevant criteria. The total ACL is comprised of the quantitative and qualitative components. The Bank estimates its allowance for credit losses for pooled loans based on its PD and LGD, determined for the respective risk pools. The allowance for credit losses for the quantitative component of pooled loans is the product of multiplying the PD, LGD and EAD. Asset-specific component To determine the asset-specific component of the allowance, collateral-dependent loans (including those loans for which foreclosure is probable) and larger and non-accrual risk-rated loans in the wholesale portfolio segment are generally evaluated individually, while smaller loans (both scored and risk-rated) are aggregated for evaluation based on factors relevant for the respective class of assets. Loans are identified for individual assessment based on financial difficulty which includes nonperforming loans, labeled loans and loans identified based on management judgment. The Bank generally measures the asset-specific allowance as the difference between the amortized cost of the loan and the present value of the cash flows expected to be collected, discounted at the loan’s original effective interest rate. Subsequent changes in impairment, including those related to the passage of time, are generally recognized as an adjustment to the allowance for credit losses. For collateral-dependent loans, the fair value of collateral less estimated costs to sell is used to determine the charge-off amount for declines in value (to reduce the amortized cost of the loan to the fair value of collateral) or the amount of the negative allowance that should be recognized (for recoveries of prior charge-offs associated with improvements in the fair value of collateral). The asset-specific component of the allowance for credit losses that have been or are expected to be modified in TDRs incorporates the effect of the modification on the loan’s expected cash flows (including forgone interest, principal forgiveness, and other concessions), and also the potential for redefault. For wholesale loans modified or expected to be modified in TDRs, expected losses incorporate management’s expectation of the borrower’s ability to repay under the modified terms. Estimating the timing and amounts of future cash flows is highly subject to judgment as these cash flow projections rely upon estimates such as loss severities, asset valuations, default rates (including redefault rates on modified loans), the amounts and timing of interest or principal payments (including any expected prepayments) or other factors that are reflective of current and expected market conditions. All of these estimates and assumptions require significant management judgment and certain assumptions are highly subjective. j. Sales/transfer of receivables The Bank enters into assignment transactions, which are similar to asset-backed securitization transactions through the special purpose entities (“SPEs”) route, except that such portfolios of receivables are assigned directly to the purchaser and are not represented by pass-through certificates. The Bank also sells finance receivables to SPEs, formerly qualifying special purpose entities (“QSPEs”) in securitization transactions. Recourse is in the form of the Bank’s investment in subordinated securities issued by these SPEs, cash collateral and other credit and liquidity enhancements. The receivables are derecognized in the balance sheet when they are sold and consideration has been received by the Bank. Sales and transfers that do not meet the criteria for surrender of control are accounted for as secured borrowings. The Bank first makes a determination as to whether the securitization entity would be consolidated. Second, it determines whether the transfer of financial assets is considered a sale. Furthermore, former qualifying special purpose entities (QSPEs) are now considered VIEs and are no longer exempt from consolidation. The Bank consolidates VIEs when it has both: (1) power to direct activities of the VIE that most significantly impact the entity’s economic performance and (2) an obligation to absorb losses or right to receive benefits from the entity that could potentially be significant to the VIE. The scope conditions examined include whether the entities’ equity investment at risk is insufficient to finance the activities without subordinated financial support and whether the holders of equity lack the characteristics of a financial interest. A controlling financial interest includes characteristics such as ability to make decisions through voting or similar rights, unlimited obligation to absorb the entities expected losses, and unlimited rights to receive the entities expected residual returns. Gains or losses from the sale of receivables are recognized in the income statement in the period the sale occurs based on the relative fair value of the portion sold and the portion allocated to retained interests, and are reported net of the estimated cost of servicing by the Bank. Fair values are determined based on the present value of expected future cash flows, using best estimates for key assumptions, such as prepayment and discount rates, commensurate with the risk involved. k. Property and equipment Property and equipment are stated at cost, less accumulated depreciation. Depreciation is provided over the estimated useful lives of property and equipment on a straight-line basis at the following rates: Type of Asset Rate of depreciation Premises 1.67% Software and systems 20.00% Equipment and furniture 10.00%-33.33% For assets purchased and sold during the year, depreciation is provided on a pro rata basis by the Bank and capital advances are included in other assets. Improvements to leasehold premises are charged off over the remaining primary period of the lease. l. Lease accounting The Bank recognizes its lease liabilities measured as the present value of lease payments not yet paid, discounted using the incremental borrowing rate. The right-of-use asset includes an initial measurement of the lease liabilities adjusted for accrued lease liabilities. At the inception of the contract, the Bank assesses whether the contract is, or contains, a lease. The Bank’s assessment is based on whether (1) the contract involves the use of distinct identified assets, (2) the Bank has the right to substantially all the economic benefit from the use of the asset throughout the term of the contract, and (3) the Bank has the right to direct the use of the asset. Leases are examined for classification as either finance leases or operating leases. A lease is classified as a finance lease if any one of the following criteria is met (1) the lease transfers ownership of the asset by the end of the lease term, (2) the lease contains an option to purchase the asset that is reasonably certain to be exercised, (3) the lease term is for the major part of the remaining useful life of the asset or (4) the present value of the lease payments equals or exceeds substantially all of the fair value of the asset. A lease is classified as an operating lease if it does not meet the above criteria. The Banks’s lessee arrangements consist of operating leases. The Bank records right-of-use assets and lease liabilities at the lease commencement date. Right-of-use assets are reported in other assets on the Consolidated Balance Sheets, and the related lease liabilities are reported in accrued expenses and other liabilities. The Bank has elected not to record right-of-use assets for short-term leases that have a lease term of 12 months or less and thus, all leases with a lease term exceeding 12 months are recorded on the consolidated balance sheet. Lease expense is recognized on a straight-line basis over the lease term and is recorded in non-interest expense-premises and equipment in the consolidated statements of income. The Bank made an accounting policy decision not to separate lease and non-lease components of a contract that is or contains a lease. At the lease commencement, lease liabilities are recognized based on the present value of the remaining lease payments and discounted using the incremental borrowing rate as of The Bank assesses leased assets for impairment, and if the carrying amount of the leased asset exceeds the undiscounted cash flows from the lease payments and the estimated residual value upon disposition of the leased asset, an impairment loss is recognized. m. Impairment or disposal of tangible long-lived assets Whenever events or circumstances indicate that the carrying amount of tangible long-lived assets may not be recoverable, the Bank subjects such long-lived assets to a test of recoverability based on the undiscounted cash flows from use or disposition of the asset. Such events or circumstances would include changes in the market, technology obsolescence, adverse changes in profitability or regulation. If the asset is impaired, the Bank recognizes an impairment loss estimated as the difference between the carrying value and the net realizable value. n. Income tax Income tax expense/benefit consists of the current tax expense and the net change in deferred tax assets or liabilities during the year. Deferred tax assets and liabilities are recognized for the future tax consequences of differences between the carrying values of assets and liabilities for financial reporting purposes and their respective tax bases, and for operating loss and tax credit carry forwards. Deferred tax assets are reduced by a valuation allowance to the amount that is more likely than not to be realized based on management’s judgment. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which the deferred tax assets or liabilities are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in the income statement in the period of enactment of the change. Income tax benefits are recognized and measured based upon a two-step model: 1) a tax position must be more-likely-than-not to be sustained based on its technical merits in order to be recognized, and 2) the benefit is measured as the largest amount of that position that is greater than 50 percent likely of being realized upon settlement. The difference between the benefit recognized for a position in accordance with this model and the tax benefit claimed on a tax return is referred to as an unrecognized tax benefit. The Bank’s policy is to include interest income, interest expense and penalties on overpayments and underpayment of income taxes within income tax expense in the consolidated statement of income. Interest income on overpayments of income taxes is recognized when the related matter is resolved. The Bank follows specific identification method for releasing income tax effects from AOCI. o. Revenue recognition Interest income from loans and from investments is recognized on an accrual basis using the effective interest method when earned except in respect of loans or investments placed on non-accrual status, where it is recognized when received. Fees and commissions from guarantees issued are amortized over the contractual period of the commitment. Dividends from investments are recognized when declared. Realized gains and losses on sale of securities are recorded on the trade date and are determined using the weighted average cost method. Other fees and income are recognized when earned, which is when the service that results in the income has been provided. The Bank amortizes annual fees on credit cards over the contractual period of the fees. p. Foreign currency transactions The Bank’s functional currency is the Indian Rupee, except for the Bank’s foreign branches. Foreign currency transactions are recorded at the exchange rate prevailing on the date of the transaction. Foreign currency denominated monetary assets and liabilities are converted into respective functional currency using exchange rates prevailing on the balance sheet dates. Gains and losses arising on conversion of foreign currency denominated monetary assets and liabilities and on foreign currency transactions are included in the determination of net income under foreign exchange transactions. For the foreign branches, the assets, liabilities and operations are translated, for consolidation purposes, from functional currency of the foreign branch to the Indian Rupee reporting currency at period-end rates for assets and liabilities and at average rates for operations. The resulting unrealized gains or losses are reported as a component of AOCI. q. Stock-based compensation The fair value of stock-based compensation is estimated on the date of each grant based on a binomial model. For further information, see note 21. r. Debt issuance costs Issuance costs of long-term debt are amortized over the tenure of the debt. s. Earnings per share Basic earnings per equity share have been computed by dividing net income by the weighted average number of equity shares outstanding for the period. Diluted earnings per equity share has been computed using the weighted average number of equity shares and dilutive potential equity shares outstanding during the period, using the treasury stock method, except where the result would be anti-dilutive. The Ba

Cash and due from banks, and re

Cash and due from banks, and restricted cash	12 Months Ended
	Mar. 31, 2023
Cash and due from banks, and restricted cash	3. Cash and due from banks, and restricted cash The Bank is required to maintain a specific percentage of its demand and time liabilities by way of a balance in a current account with the RBI. This is to maintain the solvency of the banking system. As prescribed by the RBI, the cash reserve ratio has to be maintained on an average basis for a two-week period. The average balance maintained for such two-week period should not fall below the prescribed threshold limit. Non-maintenance of the requisite balance is subject to levy of penalty. The Bank has classified the cash reserve maintained with the RBI as restricted cash or restricted cash equivalents (restricted cash). The cash and due from banks, and restricted cash consist of restricted cash of Rs. 780,004.8 million and Rs. 902,006.6 million (US$ 10,974.7 million) as o

Investments

Investments	12 Months Ended
	Mar. 31, 2023
Held for Trading
Investments	4. Investments, held for trading The portfolio of trading securities as of March 31, 2022 and March 31, 2023 was as follows: As of March 31, 2022 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In millions) Government of India securities Rs. 28,159.7 Rs. 57.7 Rs. 21.9 Rs. 28,195.5 Other corporate/financial institution securities 3,635.4 1.9 6.0 3,631.3 Total debt securities Rs. 31,795.1 Rs. 59.6 Rs. 27.9 Rs. 31,826.8 Other securities (including mutual fund units) 21,933.5 128.2 689.0 21,372.7 Total Rs. 53,728.6 Rs. 187.8 Rs. 716.9 Rs. 53,199.5 As of March 31, 2023 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In millions) Government of India securities Rs. 106,952.3 Rs. 103.6 Rs. 23.2 Rs. 107,032.7 Other corporate/financial institution securities 20,361.5 19.0 2.5 20,378.0 Total debt securities Rs. 127,313.8 Rs. 122.6 Rs. 25.7 Rs. 127,410.7 Other securities (including mutual fund units) 8,166.4 254.0 — 8,420.4 Total Rs. 135,480.2 Rs. 376.6 Rs. 25.7 Rs. 135,831.1 Total US$ 1,648.4 US$ 4.5 US$ 0.3 US$ 1,652.6
Available-for-Sale Debt Securities
Investments	5. Investments, AFS debt securities The portfolio of AFS debt securities as of March 31, 2022 and March 31, 2023 was as follows: As of March 31, 2022 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In millions) Government of India securities Rs. 3,226,917.6 Rs. 10,995.6 Rs. 42,946.3 Rs. 3,194,966.9 State government securities 429,146.8 4,395.9 5,865.9 427,676.8 Government securities outside India 2,279.2 — 3.4 2,275.8 Credit substitutes (see note 7) 578,922.3 5,381.4 1,283.5 583,020.2 Other corporate/financial institution bonds 36,689.5 179.8 163.5 36,705.8 Debt securities, other than asset and mortgage-backed securities 4,273,955.4 20,952.7 50,262.6 4,244,645.5 Mortgage-backed securities 24.2 — 1.3 22.9 Asset-backed securities 142,954.6 1,519.6 579.5 143,894.7 Total Rs. 4,416,934.2 Rs. 22,472.3 Rs. 50,843.4 Rs. 4,388,563.1 Securities with gross unrealized losses Rs. 1,791,389.0 Securities with gross unrealized gains 2,597,174.1 Rs. 4,388,563.1 As of March 31, 2023 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In millions) Government of India securities Rs. 3,860,431.8 Rs. 4,656.4 Rs. 80,344.5 Rs. 3,784,743.7 State government securities 428,980.9 1,322.5 15,604.8 414,698.6 Government securities outside India 819.0 — 21.8 797.2 Credit substitutes (see note 7) 511,161.4 505.4 8,479.0 503,187.8 Other corporate/financial institution bonds 27,521.4 13.4 571.3 26,963.5 Debt securities, other than asset and mortgage-backed securities 4,828,914.5 6,497.7 105,021.4 4,730,390.8 Mortgage-backed securities 19.3 — 1.8 17.5 Asset-backed securities 150,271.9 55.2 1,891.4 148,435.7 Total Rs. 4,979,205.7 Rs. 6,552.9 Rs. 106,914.6 Rs. 4,878,844.0 Total US$ 60,581.7 US$ 79.7 US$ 1,300.8 US$ 59,360.6 Securities with gross unrealized losses Rs. 3,220,573.8 Securities with gross unrealized gains 1,658,270.2 Rs. 4,878,844.0 US$ 59,360.6 AFS investments of Rs. 3,622,643.8 million and Rs. 4,199,442.3 million (US$ 51,094.3 million) as of March 31, 2022 and March 31, 2023, respectively, are eligible towards the Bank’s statutory liquidity reserve requirements. These balances are subject to withdrawal and usage restrictions towards the reserve requirements, but may be freely traded by the Bank. Of these investments, Rs. 1,648,213.8 million as of March 31, 2022 and Rs. 2,070,953.6 million (US$ 25,197.1 million) as of March 31, 2023, were kept as margins for clearing, collateral borrowing and lending obligation (“CBLO”) and real time gross settlement (“RTGS”), with the RBI and other financial institutions. Amortized cost is net of nil and Rs. million as allowance for credit losses as for the fiscal years ended March 31, 2022 and March 31, 2023, respectively. The below table presents the gross unrealized losses and the associated fair value of AFS debt securities and whether these securities have had gross unrealized losses for less than 12 months or 12 months or greater as of March 31, 2022: As of March 31, 2022 Less Than 12 Months 12 Months or Greater Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (In millions) Government of India securities Rs. 447,360.3 Rs. 7,893.5 Rs. 838,788.4 Rs. 35,052.8 Rs. 1,286,148.7 Rs. 42,946.3 State government securities 146,365.0 1,213.6 131,616.3 4,652.3 277,981.3 5,865.9 Government securities outside India 2,275.7 3.4 — — 2,275.7 3.4 Credit substitutes (see note 7) 118,798.2 972.4 37,138.9 311.1 155,937.1 1,283.5 Other corporate/financial institution bonds 15,823.3 163.5 — — 15,823.3 163.5 Debt securities, other than asset- and mortgage-backed securities 730,622.5 10,246.4 1,007,543.6 40,016.2 1,738,166.1 50,262.6 Mortgage-backed securities 23.0 1.3 — — 23.0 1.3 Asset-backed securities 25,557.2 310.6 27,642.7 268.9 53,199.9 579.5 Other securities (including mutual fund units) — — — — — — Total Rs. 756,202.7 Rs. 10,558.3 Rs. 1,035,186.3 Rs. 40,285.1 Rs. 1,791,389.0 Rs. 50,843.4 The below table presents the gross unrealized losses and the associated fair value of AFS debt securities and whether these securities have had gross unrealized losses for less than 12 months or 12 months or greater as of March 31, 2023: As of March 31, 2023 Less Than 12 Months 12 Months or Greater Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (In millions) Government of India securities Rs. 1,038,004.8 Rs. 12,622.5 Rs. 1,266,775.4 Rs. 67,722.0 Rs. 2,304,780.2 Rs. 80,344.5 State government securities 75,707.7 1,923.6 270,099.2 13,681.2 345,806.9 15,604.8 Government securities outside India 797.2 21.8 — — 797.2 21.8 Credit substitutes (see note 7) 254,023.6 3,771.0 152,702.6 4,708.0 406,726.2 8,479.0 Other corporate/financial institution bonds 21,596.9 443.0 4,205.1 128.3 25,802.0 571.3 Debt securities, other than asset- and mortgage-backed securities 1,390,130.2 18,781.9 1,693,782.3 86,239.5 3,083,912.5 105,021.4 Mortgage-backed securities — — 17.5 1.8 17.5 1.8 Asset-backed securities 110,545.7 1,077.3 26,098.1 814.1 136,643.8 1,891.4 Other securities (including mutual fund units) — — — — — — Total Rs. 1,500,675.9 Rs. 19,859.2 Rs. 1,719,897.9 Rs. 87,055.4 Rs. 3,220,573.8 Rs. 106,914.6 Total US$ 18,258.6 US$ 241.6 US$ 20,925.9 US$ 1,059.2 US$ 39,184.5 US$ 1,300.8 As of March 31, 2023 , 7 required as of March 31, 2023 in government issued or backed securities as for these debt securities the risk of loss was deemed minimal. Additionally, none of the remaining AFS investments in debt securities held by the Bank were past due or in non-accrual status as of March 31, 2023. The declines in the market value of these securities were mainly attributable to changes in interest rates and not credit quality, and because the Bank had the ability and intent to hold these investments until there is a recovery in fair value, which may be at maturity, the Bank did not record any write-offs for credit losses on any of these securities at March 31, 2023. Allowances for AFS debt securities as of March 31, 2022 are as follows: As of March 31, 2022 Allowance for credit losses, beginning of the period Write-offs Addition / ( Deletion allowance for credit losses Allowance for credit losses, end of the period (In millions) Credit substitutes Rs. 2,915.1 Rs. — Rs. (2,915.1 ) Rs. — Other corporate/financial institution bonds — — — — Total Rs. 2,915.1 Rs. — Rs. (2,915.1 ) Rs. — Allowances for AFS debt s As of March 31, 2023 Allowance for the period Write-offs Addition/(Deletion) to allowance for credit losses Allowance for period (In millions) Credit substitutes Rs. — Rs. — Rs. 70.9 Rs. 70.9 Other corporate/financial institution bonds — — — — Total Rs. — Rs. — Rs. 70.9 Rs. 70.9 Total US$ — US$ — US$ 0.9 US$ 0.9 Credit Quality Indicators The Bank monitors the credit quality of its investment securities through various risk management procedures, including the monitoring of credit ratings. A majority of the debt securities in the Bank’s investment portfolio were issued by the Government of India or State governments or entities or agencies that are either explicitly or implicitly guaranteed by such governments. The Bank believes the long history of no credit losses on these securities indicates that the expectation of non-payment of the amortized cost basis is zero, even if such governments were to technically default. Therefore, for the aforementioned securities, the Bank does not assess, or record expected credit losses due to the zero loss assumption. The Bank monitors the credit quality of its remaining AFS investment portfolio which is updated periodically. Such of the remaining AFS investment portfolio in an unrealized loss position are evaluated to determine if the loss is attributable to credit related factors and if an allowance for credit loss is needed. The average credit rating of the securities comprising the mortgage-backed securities and asset-backed securities was AAA (based upon external ratings where available) as of The contractual residual maturity of AFS debt securities other than asset and mortgage-backed securities as of March 31, 2023 is set out below: As of March 31, 2023 Amortized Cost Fair Value Fair Value (In millions) Within one year Rs. 1,092,231.4 Rs. 1,088,924.4 US$ 13,248.8 Over one year through five years 1,398,521.5 1,373,721.5 16,714.0 Over five years through ten years 1,590,115.9 1,545,947.0 18,809.4 Over ten years 748,045.7 721,797.9 8,782.1 Total Rs. 4,828,914.5 Rs. 4,730,390.8 US$ 57,554.3 The contractual residual maturity of AFS mortgage-backed and asset-backed debt securities as of March 31, 2023 is set out below: As of March 31, 2023 Amortized Cost Fair Value Fair Value (In millions) Within one year Rs. 67,028.7 Rs. 66,150.7 US$ 804.9 Over one year through five years 82,694.3 81,730.2 994.4 Over five years through ten years 471.2 474.5 5.8 Over ten years 97.0 97.8 1.2 Total Rs. 150,291.2 Rs. 148,453.2 US$ 1,806.3 Gross realized gains and gross realized losses from sale of AFS debt securities and dividends and interest on such securities are set out below: Fiscal year ended March 31, 2021 2022 2023 2023 (In millions) Gross realized gains on sale Rs. 56,439.4 Rs. 18,604.5 Rs. 259.1 US$ 3.2 Gross realized losses on sale (514.2 ) (1,858.7 ) (979.4 ) (12.0 ) Realized gains/ (losses), net 55,925.2 16,745.8 (720.3 ) (8.8 ) Dividends and interest 226,690.9 240,943.0 304,566.7 3,705.6 Total Rs. 282,616.1 Rs. 257,688.8 Rs. 303,846.4 US$ 3,696.8
Held-to-maturity Securities
Investments	6. Investments, held to maturity There were no HTM securities as of March 31, 2022 and March 31, 2023.

Credit substitutes

Credit substitutes	12 Months Ended
	Mar. 31, 2023
Credit substitutes	7. Credit substitutes Credit substitutes consist of securities that the Bank invests in as part of an overall extension of credit to certain customers. Such securities share many of the risk and reward characteristics of loans and are managed by the Bank together with other credit facilities extended to the same customers. The fair value of credit substitutes by type of instrument as of March 31, 2022 and March 31, 2023 were as follows: As of March 31, 2022 2023 Amortized Cost Fair Value Amortized Cost Fair Value (In millions) Available for sale credit substitute debt securities: Debentures Rs. 577,377.0 Rs.581,551.5 Rs. 510,880.4 Rs. 503,187.6 Preference shares 77.1 0.5 281.0 0.2 Commercial paper 1,468.2 1,468.2 — — Total Rs. 578,922.3 Rs.583,020.2 Rs. 511,161.4 Rs. 503,187.8 US$ 6,219.3 US$ 6,122.3 The fair value of credit substitutes by the Bank’s internal credit quality indicators and amounts provided for non-performing credit substitutes is as follows: As of March 31, 2022 2023 2023 (In millions) Pass Rs. 583,020.2 Rs. 503,187.8 US$ 6,122.3 Non-performing—gross balance — — — Less: Non-performing losses — — — Non-performing credit substitutes, net — — — Total credit substitutes, net Rs. 583,020.2 Rs. 503,187.8 US$ 6,122.3 The following table provides information on non-performing credit substitutes as o As of March 31, 2022 2023 2023 (In millions) Gross non-performing credit substitutes Rs — Rs — US$ — Gross non-performing credit substitutes by industry Rs. — Rs. — US$ — Average non-performing credit substitutes Rs. — Rs. — US$ — Interest income recognized on non-performing credit substitutes Rs. — Rs. — US$ — As of March 31, 2023, the Bank has no additional funds committed to borrowers whose credit substitutes were non-performing.

Repurchase and resell agreement

Repurchase and resell agreements	12 Months Ended
	Mar. 31, 2023
Repurchase and resell agreements	8. Repurchase and resell agreements Securities sold under agreements to repurchase (“repos”) and securities purchased under agreements to resell (“reverse repos”) generally do not constitute a sale for accounting purposes of the underlying securities, and so are treated as collateralized transactions. There were no such transactions accounted for as sales during the fiscal a. Securities purchased under agreements to resell Securities purchased under agreements to resell are classified separately from investments and generally mature within 14 days of the transaction date. Such resell transactions are recorded at the amount of cash advanced on the transaction. Resell transactions outstanding as of March 31, 2022 and March 31, 2023 were Rs. 373,053.3 million and Rs. 455,275.4 million (US$ 5,539.3 million), respectively (see note 23). b. Securities sold under repurchase agreements Securities sold under agreements to repurchase are classified separately under liabilities and generally mature within 14 days of the transaction date. Such repurchase transactions are recorded at the amount of cash received on the transaction. Repurchase transactions outstanding as of March 31, 2022 and March 31, 2023 were Rs. 151,844.9 million and nil, respectively. The Government of India securities are pledged as collateral (see note 23).

Loans

Loans	12 Months Ended
	Mar. 31, 2023
Loans	9. Loans Loan balances included Rs. 372,013.8 million and Rs. 1,927,514.2 million (US$ 23,451.9 million) as of March 31, 2022 and March 31, 2023, respectively, which have been provided as collateral for borrowings and are therefore restricted. Loans by facility as of March 31, 2022 and March 31, 2023 were as follows: As of March 31, 2022 2023 2023 (In millions) Retail loans: Auto loans Rs. 1,042,793.0 Rs. 1,221,097.6 US$ 14,857.0 Personal loans/Credit cards 2,341,971.8 2,782,828.5 33,858.5 Retail business banking 2,617,087.1 3,378,625.2 41,107.5 Commercial vehicle and construction equipment finance 951,066.0 1,285,887.8 15,645.3 Housing loans 830,882.4 1,020,901.6 12,421.2 Other retail loans 1,526,734.4 1,817,239.6 22,110.2 Subtotal Rs. 9,310,534.7 Rs. 11,506,580.3 US$ 139,999.7 Wholesale loans Rs. 5,099,009.3 Rs. 5,911,512.1 US$ 71,925.0 Gross loans 14,409,544.0 17,418,092.4 211,924.7 Less: Allowance for credit losses 372,671.8 365,164.5 4,443.0 Total Rs. 14,036,872.2 Rs. 17,052,927.9 US$ 207,481.7 Loans, other than crop-related agricultural loans, are generally placed on non-accrual status and considered non-performing if principal or interest payments become 90 days past due and/or management deems the collectability of the principal and/or interest to be doubtful. Crop-related agricultural loans are generally placed on non-accrual status and considered non-performing if principal or interest payments become 366 days past due and/or management deems the collectability of the principal and/or interest to be doubtful. Loans are returned to accrual status when the principal and interest amounts contractually due are brought current. The maturity of gross loans as of March 31, 2023 is set out below: As of March 31, 2023 Wholesale loans Retail loans Total (In millions) Maturity profile of loans: Within one year Rs. 1,790,721.1 Rs. 2,863,235.5 Rs. 4,653,956.6 Over one year through five years 2,966,781.3 7,396,855.6 10,363,636.9 Over five years 1,154,009.7 1,246,489.2 2,400,498.9 Total Rs. 5,911,512.1 Rs. 11,506,580.3 Rs. 17,418,092.4 Total US$ 71,925.0 US$ 139,999.7 US$ 211,924.7 The following table provides details of age analysis of loans and finance receivable on non-accrual status as of March 31, 2022 and March 31, 2023. As of March 31, 2022 31-90 days Non-accrual/ Current (1), Total Finance on non-accrual (In millions) Retail Loans Auto loans Rs. 6,536.5 Rs. 20,441.6 Rs. 1,015,814.9 Rs. 1,042,793.0 Rs. 20,441.6 Personal loans/Credit card 27,433.8 28,057.5 2,286,480.5 2,341,971.8 28,057.5 Retail business banking 18,242.9 35,820.2 2,563,024.0 2,617,087.1 35,820.2 Commercial vehicle and construction equipment finance 20,263.0 25,091.5 905,711.5 951,066.0 25,091.5 Housing loans 3,296.3 6,478.4 821,107.7 830,882.4 6,478.4 Other retail 18,009.8 49,459.2 1,459,265.4 1,526,734.4 49,459.2 Wholesale loans 8,455.4 31,921.1 5,058,632.8 5,099,009.3 31,921.1 Total Rs. 102,237.7 Rs. 197,269.5 Rs. 14,110,036.8 Rs. 14,409,544.0 Rs. 197,269.5 (1) Loans up to 30 days past due are considered current. (2) Includes crop-related agricultural loans with days past due less than 366 as they are not considered as non-performing of Rs. 34.2 billion. As of March 31, 2023 31-90 days Non-accrual/ Current (1),(2) Total Finance on non-accrual (In millions) Retail Loans Auto loans Rs. 5,738.3 Rs. 15,941.6 Rs. 1,199,417.7 Rs. 1,221,097.6 Rs. 15,941.6 Personal loans/Credit card 20,871.1 22,770.1 2,739,187.3 2,782,828.5 22,770.1 Retail business banking 21,241.0 43,937.8 3,313,446.4 3,378,625.2 43,937.8 Commercial vehicle and construction equipment finance 15,089.3 21,823.8 1,248,974.7 1,285,887.8 21,823.8 Housing loans 3,916.0 5,900.3 1,011,085.3 1,020,901.6 5,900.3 Other retail 30,007.7 56,822.9 1,730,409.0 1,817,239.6 56,822.9 Wholesale loans 3,905.0 33,512.3 5,874,094.8 5,911,512.1 33,512.3 Total Rs. 100,768.4 Rs. 200,708.8 Rs. 17,116,615.2 Rs. 17,418,092.4 Rs. 200,708.8 Total US$ 1,226.0 US$ 2,442.0 US$ 208,256.7 US$ 211,924.7 US$ 2,442.0 ( ) Loans up to 30 days past due are considered current. ( ) Includes crop-related agricultural loans with days past due less than 366 as they are not considered as non-performing of Rs. 31.8 billion. From fiscal year 2020 the Bank has implemented the packages announced by RBI on account of the COVID-19 p andem , , d For retail loans , As an integral part of the credit process, the Bank has a credit rating model for its wholesale and retail credit segments. The Bank monitors credit quality within its segments based on primary credit quality indicators. This internal grading is updated at least annually. Disbursals under one-time restructurings are also included. The amount of purchased financing receivables outstanding as of March 31, 2022 and March 31, 2023 was Rs. 836,172.8 million and Rs. 1,024,684.4 million, respectively. The following table provides information on primary credit quality indicators as o Term loans by origination Credit quality indicators-Internally assigned grade Prior 2018 2019 2020 2021 2022 Revolving Revolving Total (In millions) Auto loans Performing Rs. 8,466.2 Rs. 42,634.8 Rs. 89,161.9 Rs. 169,606.1 Rs. 252,295.7 Rs. 455,114.6 Rs. 5,072.1 Rs. — Rs. 1,022,351.4 Non-performing 846.1 2,866.6 5,455.2 6,323.4 2,973.5 661.7 1,315.1 — 20,441.6 Subtotal Rs. 9,312.3 Rs. 45,501.4 Rs. 94,617.1 Rs. 175,929.5 Rs. 255,269.2 Rs. 455,776.3 Rs. 6,387.2 Rs. — Rs. 1,042,793.0 Personal loans/Credit card Performing Rs. 1,374.4 Rs. 14,320.8 Rs. 67,477.1 Rs. 225,561.4 Rs. 336,526.1 Rs. 947,277.0 Rs. 381,900.4 Rs. 339,477.1 Rs. 2,313,914.3 Non-performing 201.7 910.2 4,184.4 7,967.1 3,931.7 1,722.7 6,405.6 2,734.1 28,057.5 Subtotal Rs. 1,576.1 Rs. 15,231.0 Rs. 71,661.5 Rs. 233,528.5 Rs. 340,457.8 Rs. 948,999.7 Rs. 388,306.0 Rs. 342,211.2 Rs. 2,341,971.8 Retail business banking Performing Rs. 52,347.2 Rs. 78,959.8 Rs. 97,361.4 Rs. 151,964.0 Rs. 306,673.0 Rs. 569,687.0 Rs. 1,324,274.5 Rs. — Rs. 2,581,266.9 Non-performing 3,661.9 3,736.0 3,429.5 2,598.7 2,880.8 412.2 19,101.1 — 35,820.2 Subtotal Rs. 56,009.1 Rs. 82,695.8 Rs. 100,790.9 Rs. 154,562.7 Rs. 309,553.8 Rs. 570,099.2 Rs. 1,343,375.6 Rs. — Rs. 2,617,087.1 Commercial vehicle and construction equipment finance Performing Rs. 1,837.4 Rs. 16,022.5 Rs. 69,418.2 Rs. 125,223.1 Rs. 185,561.0 Rs. 426,434.1 Rs. 101,478.2 Rs. — Rs. 925,974.5 Non-performing 210.8 1,391.5 6,224.5 8,010.6 3,883.8 651.3 4,719.0 — 25,091.5 Subtotal Rs. 2,048.2 Rs. 17,414.0 Rs. 75,642.7 Rs. 133,233.7 Rs. 189,444.8 Rs. 427,085.4 Rs. 106,197.2 Rs. — Rs. 951,066.0 Housing loans Performing Rs. 301,103.3 Rs. 85,682.1 Rs. 127,339.2 Rs. 46,798.3 Rs. 0.6 Rs. 263,480.5 Rs. — Rs. — Rs. 824,404.0 Non-performing 1,597.6 504.1 1,472.2 2,193.9 512.8 197.8 — — 6,478.4 Subtotal Rs. 302,700.9 Rs. 86,186.2 Rs. 128,811.4 Rs. 48,992.2 Rs. 513.4 Rs. 263,678.3 Rs. — Rs. — Rs. 830,882.4 Other retail loans Performing Rs. 4,260.4 Rs. 11,266.3 Rs. 20,843.1 Rs. 51,074.6 Rs. 131,647.7 Rs. 567,032.4 Rs. 691,150.7 Rs. — Rs. 1,477,275.2 Non-performing 2,989.1 1,434.6 4,470.0 10,682.7 3,645.0 1,004.1 25,233.7 — 49,459.2 Subtotal Rs. 7,249.5 Rs 12,700.9 Rs. 25,313.1 Rs. 61,757.3 Rs. 135,292.7 Rs. 568,036.5 Rs. 716,384.4 Rs. — Rs. 1,526,734.4 Total Rs. 378,896.1 Rs. 259,729.3 Rs. 496,836.7 Rs. 808,003.9 Rs. 1,230,531.7 Rs. 3,233,675.4 Rs. 2,560,650.4 Rs. 342,211.2 Rs. 9,310,534.7 The following table provides information on primary credit quality indicators as of Term loans by origination Credit quality indicators- assigned grade Prior 2019 2020 2021 2022 2023 Revolving Revolving Total (In millions) Auto loans Performing Rs. 14,387.2 Rs. 37,425.2 Rs. 90,148.4 Rs. 160,443.6 Rs. 308,076.9 Rs. 525,693.8 Rs. 68,980.9 Rs. — Rs. 1,205,156.0 Non-performing 1,129.9 2,324.4 3,858.8 2,875.4 1,990.0 748.9 3,014.2 — 15,941.6 Subtotal Rs. 15,517.1 Rs. 39,749.6 Rs. 94,007.2 Rs. 163,319.0 Rs. 310,066.9 Rs. 526,442.7 Rs. 71,995.1 Rs. — Rs. 1,221,097.6 Personal loans/Credit card Performing Rs. 2,431.4 Rs. 20,673.2 Rs. 86,038.7 Rs. 155,911.2 Rs. 490,598.8 Rs. 1,206,873.5 Rs. 482,500.3 Rs. 315,031.3 Rs. 2,760,058.4 Non-performing 346.6 1,440.1 3,511.1 2,518.9 3,411.9 2,254.3 8,869.6 417.6 22,770.1 Subtotal Rs. 2,778.0 Rs. 22,113.3 Rs. 89,549.8 Rs. 158,430.1 Rs. 494,010.7 Rs. 1,209,127.8 Rs. 491,369.9 Rs. 315,448.9 Rs. 2,782,828.5 Retail business banking Performing Rs. 75,583.1 Rs. 58,914.7 Rs. 94,372.2 Rs. 185,698.6 Rs. 412,305.0 Rs. 600,147.3 Rs. 1,907,666.5 Rs. — Rs. 3,334,687.4 Non-performing 4,851.6 2,996.8 2,847.2 4,136.3 1,558.3 218.4 27,329.2 — 43,937.8 Subtotal Rs. 80,434.7 Rs. 61,911.5 Rs. 97,219.4 Rs. 189,834.9 Rs. 413,863.3 Rs. 600,365.7 Rs. 1,934,995.7 Rs. — Rs. 3,378,625.2 Commercial vehicle and construction equipment finance Performing Rs. 3,981.3 Rs. 19,618.5 Rs. 49,030.6 Rs. 92,773.8 Rs. 277,461.6 Rs. 629,405.5 Rs. 191,792.7 Rs. — Rs. 1,264,064.0 Non-performing 398.0 2,582.1 4,491.4 4,696.0 3,053.3 763.8 5,839.2 — 21,823.8 Subtotal Rs. 4,379.3 Rs. 22,200.6 Rs. 53,522.0 Rs. 97,469.8 Rs. 280,514.9 Rs. 630,169.3 Rs. 197,631.9 Rs. — Rs. 1,285,887.8 Housing loans Performing Rs. 394,712.3 Rs. 160,447.9 Rs. 143,037.0 Rs. 120,214.8 Rs. 167,130.4 Rs. 29,458.9 Rs. — Rs. — Rs. 1,015,001.3 Non-performing 4,031.5 1,206.1 358.8 180.2 123.3 0.4 — — 5,900.3 Subtotal Rs. 398,743.8 Rs. 161,654.0 Rs. 143,395.8 Rs. 120,395.0 Rs. 167,253.7 Rs. 29,459.3 Rs. — Rs. — Rs. 1,020,901.6 Other retail loans Performing Rs. 5,564.3 Rs. 10,063.3 Rs. 18,382.0 Rs. 42,416.7 Rs. 150,038.1 Rs. 603,873.8 Rs. 930,078.5 Rs. — Rs. 1,760,416.7 Non-performing 3,000.6 3,254.9 11,339.9 3,171.9 2,261.4 971.8 32,822.4 — 56,822.9 Subtotal Rs. 8,564.9 Rs. 13,318.2 Rs. 29,721.9 Rs. 45,588.6 Rs. 152,299.5 Rs. 604,845.6 Rs. 962,900.9 Rs. — Rs. 1,817,239.6 Total Rs. 510,417.8 Rs. 320,947.2 Rs. 507,416.1 Rs. 775,037.4 Rs. 1,818,009.0 Rs. 3,600,410.4 Rs. 3,658,893.5 Rs. 315,448.9 Rs. 11,506,580.3 Total US$ 6,210.2 US$ 3,904.9 US$ 6,173.7 US$ 9,429.8 US$ 22,119.6 US$ 43,806.0 US$ 44,517.5 US$ 3,838.0 US$ 139,999.7 Wholesale Loans The Bank has a process in place for grading each borrower according to its financial health and the performance of its business and each borrower is graded as pass/labeled/non-performing. Wholesale loans that are not non-performing are disclosed as pass or labeled and considered to be performing. Labeled loans are those with evidence of weakness where such exposures indicate deteriorating trends which if not corrected could adversely impact repayment of the obligations. The Bank’s model assesses the overall risk over four major categories: industry risk, business risk, management risk and financial risk. The inputs in each of the categories are combined to provide an aggregate numerical rating, which is a function of the aggregate weighted scores based on the assessment under each of these four risk categories. The following table provides information on primary credit quality indicators as o Term loans by origination Credit quality indicators-Internally assigned grade Prior 2018 2019 2020 2021 2022 Revolving Total (In millions) Wholesale loans Pass Rs. 5,289.7 Rs. 186,145.4 Rs. 195,703.7 Rs. 421,349.1 Rs. 1,006,687.4 Rs. 2,232,372.3 Rs. 984,145.8 Rs. 5,031,693.4 Labeled — 3,297.2 5,164.1 1,632.6 4,045.0 11,447.4 9,808.5 35,394.8 Non-performing 569.7 4,666.1 5,833.7 361.1 479.0 1,301.6 18,709.9 31,921.1 Total Rs. 5,859.4 Rs. 194,108.7 Rs. 206,701.5 Rs. 423,342.8 Rs. 1,011,211.4 Rs. 2,245,121.3 Rs. 1,012,664.2 Rs. 5,099,009.3 The following table provides information on primary credit quality indicators as of Term loans by origination Credit quality indicators- assigned grade Prior 2019 2020 2021 2022 2023 Revolving Total (In millions) Wholesale loans Pass Rs. 130,723.1 Rs. 135,400.3 Rs. 321,191.0 Rs. 708,309.0 Rs. 1,244,766.9 Rs. 1,471,254.9 Rs. 1,841,015.5 Rs. 5,852,660.7 Labeled 2,625.3 1,586.9 635.7 4,200.8 5,946.5 795.3 9,548.6 25,339.1 Non-performing 3,830.5 1,914.3 66.1 326.4 6,297.4 39.1 21,038.5 33,512.3 Total Rs. 137,178.9 Rs. 138,901.5 Rs. 321,892.8 Rs. 712,836.2 Rs. 1,257,010.8 Rs. 1,472,089.3 Rs. 1,871,602.6 Rs. 5,911,512.1 Total US$ 1,669.0 US$ 1,690.0 US$ 3,916.4 US$ 8,673.0 US$ 15,294.0 US$ 17,910.8 US$ 22,771.7 US$ 71,925.0 Non-performing loans by industry as of March 31, 2022 and March 31, 2023 are as follows: As of March 31, 2022 (In millions) Gross non-performing loans by industry: — Consumer Loans Rs. 35,554.7 — Agri Production—Food 23,569.7 — Retail Trade 15,124.1 — Agri Allied 13,255.0 — Road Transportation 12,961.6 — Consumer services 10,352.3 — Others (none greater than 5% of non-performing loans) 86,452.1 Total Rs. 197,269.5 As of March 31, 2023 (In millions) Gross non-performing loans by industry: — Consumer Loans Rs. 34,684.8 US$ 422.0 — Agri Production—Food 28,222.2 343.4 — Retail Trade 15,044.4 183.0 — Agri Allied 13,426.1 163.4 — Consumer services 11,505.0 140.0 — Road Transportation 10,031.1 122.0 — Others (none greater than 5% of non-performing loans) 87,795.2 1,068.2 Total Rs.200,708.8 US$ 2,442.0 Summary information relating to interest income recognized on non-performing loans during the fiscal years ended March 31, 2021, March 31, 2022 and March 31, 2023 is as follows: Fiscal year ended March 31, 2021 2022 2023 2023 (In millions) Interest income recognized on non-performing loans Rs. 7,025.3 Rs. 11,881.0 Rs. 7,738.0 US$ 94.1 A loan is collateral dependent when the borrower is experiencing financial difficulty and repayment of the loan is dependent on the sale or operation of the underlying collateral. Such loans are carried at fair value based on current values determined by either independent appraisals or internal evaluations, adjusted for selling costs or other amounts to be deducted when estimating expected net sales proceeds. For the fiscal Allowances for credit losses as of March 31, 2021 are as follows: Auto loans Personal Retail Commercial Housing Other Wholesale Total (In millions) Allowance for credit losses, beginning of the period Rs. 19,219.0 Rs. 47,097.1 Rs. 32,860.3 Rs. 20,463.4 Rs. 1,700.7 Rs. 37,864.3 Rs. 39,628.4 Rs. 198,833.2 Impact of adopting ASC 326 9,880.9 38,091.1 3,947.5 325.5 1,659.5 234.3 26,874.2 81,013.0 Write-offs (13,263.5 ) (61,571.8 ) (14,951.6 ) (15,921.5 ) (190.8 ) (9,942.8 ) (3,628.7 ) (119,470.7 ) Net allowance for credit losses ( ) 23,559.7 86,464.6 20,432.2 21,489.3 1,408.6 21,073.4 8,725.4 183,153.2 Allowance for credit losses, end of the period Rs. 39,396.1 Rs. 110,081.0 Rs. 42,288.4 Rs. 26,356.7 Rs. 4,578.0 Rs. 49,229.2 Rs. 71,599.3 Rs. 343,528.7 Allowance for credit losses: Individually evaluated a Rs. 34.7 Rs. 4.0 Rs. 3,540.7 Rs. 59.6 Rs. — Rs. 72.1 Rs. 33,222.5 Rs. 36,933.6 Collectively evaluated a 39,361.4 110,077.0 38,747.7 26,297.1 4,578.0 49,157.1 38,376.8 306,595.1 Loans: Individually evaluated l 49.5 4.2 3,560.8 59.7 — 92.7 42,786.8 46,553.7 Collectively evaluated l 964,003.7 2,042,723.0 2,004,285.1 805,270.1 702,235.5 1,306,548.3 4,172,098.5 11,997,164.2 ( ) Net allowances for credit losses charged to expense does not include the recoveries against write-off cases amounting to Rs. 28,919.8 28,605.8 314.0 Allowances for credit losses as of March 31, 2022 are as follows: Auto loans Personal Retail Commercial Housing Other Wholesale Total (In millions) Allowance for credit losses, beginning of the period Rs. 39,396.1 Rs. 110,081.0 Rs. 42,288.4 Rs. 26,356.7 Rs. 4,578.0 Rs. 49,229.2 Rs. 71,599.3 Rs. 343,528.7 Write-offs (19,376.9 ) (74,500.8 ) (3,027.7 ) (16,592.0 ) (601.6 ) (17,567.4 ) (2,351.4 ) (134,017.8 ) Net allowance for credit losses ( ) 21,750.2 75,986.2 9,794.3 21,986.2 (1,284.2 ) 29,775.2 5,153.0 163,160.9 Allowance for credit losses, end of the Rs. 41,769.4 Rs. 111,566.4 Rs. 49,055.0 Rs. 31,750.9 Rs. 2,692.2 Rs. 61,437.0 Rs. 74,400.9 Rs. 372,671.8 Allowance for credit losses: Individually evaluated allowance Rs. 18.4 Rs. 6.5 Rs. 2,651.4 Rs. 65.8 Rs. — Rs. 92.3 Rs. 35,619.7 Rs. 38,454.1 Collectively evaluated a 41,751.0 111,559.9 46,403.6 31,685.1 2,692.2 61,344.7 38,781.2 334,217.7 Loans: Individually evaluated l 31.5 29.4 2,651.4 66.3 — 126.6 41,832.9 44,738.1 Collectively evaluated l 1,042,761.5 2,341,942.4 2,614,435.7 950,999.7 830,882.4 1,526,607.8 5,057,176.4 14,364,805.9 ( ) Net allowances for credit losses charged to expense does not include the recoveries against write-off cases amounting to Rs. 36,181.4 35,385.3 796.1 Allowances for credit losses as of March 31, 2023 are as follows: Auto loans Personal Retail Commercial c Housing Other Wholesale Total Total (In millions) Allowance for Rs. 41,769.4 Rs. 111,566.4 Rs. 49,055.0 Rs. 31,750.9 Rs. 2,692.2 Rs. 61,437.0 Rs. 74,400.9 Rs. 372,671.8 US$ 4,534.3 Write-offs (10,456.0 ) (88,744.9 ) (3,987.8 ) (15,270.1 ) (479.0 ) (15,769.9 ) (3,156.0 ) (137,863.7 ) (1,677.4 ) Net allowance for credit losses ( ) 2,522.1 76,812.9 18,907.6 14,649.8 1,056.7 26,345.3 (9,938.0 ) 130,356.4 1,586.1 Allowance for Rs. 33,835.5 Rs. 99,634.4 Rs. 63,974.8 Rs. 31,130.6 Rs. 3,269.9 Rs. 72,012.4 Rs. 61,306.9 Rs. 365,164.5 US$ 4,443.0 Allowance for Individually evaluated a Rs. 4.6 Rs. — Rs. 2,320.3 Rs. 15.0 Rs. — Rs. 92.1 Rs. 29,264.6 Rs. 31,696.6 US$ 385.7 Collectively evaluated a 33,830.9 99,634.4 61,654.5 31,115.6 3,269.9 71,920.3 32,042.3 333,467.9 4,057.3 Loans: — — Individually evaluated l 16.4 0.8 2,782.0 290.8 — 92.3 33,879.5 37,061.8 450.9 Collectively evaluated l 1,221,081.2 2,782,827.7 3,375,843.2 1,285,597.0 1,020,901.6 1,817,147.3 5,877,632.6 17,381,030.6 211,473.8 ( ) Net allowances for credit losses charged to expense does not include the recoveries against write-off cases amounting to Rs. 56,142.6 683.1 53,374.2 2,768.4 The allowance for credit losses is assessed at each period end and the increase/(decrease), as the case may be , Troubled debt restructuring (“TDR”) When the Bank grants a concession, for economic or legal reasons related to a borrower’s financial difficulties, for other than an insignificant period of time, the related loan is classified as a TDR. Such concessions could include a reduction in the interest rate below current market rates, payment extensions, forgiveness of principal, forbearance or other actions intended to maximize collection. Loans, for which the terms have been modified, and for which the borrower is experiencing financial difficulties, are considered TDRs. On restructuring, those loans are re-measured to reflect the impact, if any, on projected cash flows resulting from the modified terms. The impact of the TDR modifications and defaults are factored into the allowance for credit losses on a loan-by-loan basis. Modification may have little or no impact on the allowance established for the loan if there was no forgiveness of the principal and the interest was not decreased. A charge-off may be recorded at the time of restructuring if a portion of the loan is deemed to be uncollectible. A TDR classification can be removed if the borrower’s financial condition improves such that the borrower is no longer in financial difficulty, the loan has not had any forgiveness of principal or interest, and the loan is subsequently refinanced or restructured at market terms and qualifies as a new loan. There Interest on loans by facility are as follows: Fiscal year ended March 31, 2021 2022 2023 2023 (In millions) Wholesale loans Rs. 263,190.7 Rs. 250,779.5 Rs. 363,842.1 US$ 4,426.8 Retail loans 753,857.1 807,146.1 987,975.9 12,020.7 Total Rs. 1,017,047.8 Rs. 1,057,925.6 Rs. 1,351,818.0 US$ 16,447.5

Concentrations of credit risk

Concentrations of credit risk	12 Months Ended
	Mar. 31, 2023
Concentrations of credit risk	10. Concentrations of credit risk Concentrations of credit risk exist when changes in economic, industry or geographic factors similarly affect groups of counterparties whose aggregate credit exposure is material in relation to the Bank’s total credit exposure. The Bank manages its credit risk collectively for its loan portfolio and credit substitute securities as these instruments are invested in as part of an overall lending program for corporate customers; accordingly, information on concentrations of credit risk has been provided for these exposures together. In the case of wholesale loans, while the Bank generally lends on a cash-flow basis, it also requires collateral which consists of liens on inventory, receivables and other current assets, and in some cases, charges on fixed assets, such as property, movable assets (such as vehicles) and financial assets (such as marketable securities) from a large number of the Bank’s borrowers. The Bank’s retail loans are generally secured by a charge on the asset financed (vehicle loans, property loans and loans against gold and securities). Retail business banking loans are secured with current assets as well as immovable property and fixed assets in some cases. However, collateral securing each individual loan may not be adequate in relation to the value of the loan. If the customer fails to pay, the Bank would, as applicable, liquidate collateral and/or set off accounts. The maximum estimated loss that would be incurred under severe, hypothetical circumstances, for which the Bank believes the possibility is extremely remote, such as where the value of the Bank’s interests and any associated collateral declines to zero, without any consideration of recovery or offset is determined as the carrying values of the instruments as given in the below table. The Bank’s portfolio of loans, credit substitute securities and non-funded exposure (including derivatives) is broadly diversified along industry and product lines, and as of March 31, 2022 and March 31, 2023, the exposures are as set forth below. As of March 31, 2022 Category Gross loans Fair value of Non-funded Total % (In millions, except percentages) Consumer Loans Rs. 3,746,781.7 Rs. — Rs. 3,035.7 Rs. 3,749,817.4 22.7 Power 671,859.4 70,346.0 52,366.6 794,572.0 4.8 Financial Institutions 618,494.1 51,844.1 13.1 670,351.3 4.1 NBFC 509,445.4 106,764.5 5,818.5 622,028.4 3.8 Retail Trade 589,947.3 — 28,857.8 618,805.1 3.7 Coal & Petroleum Products 233,583.7 174,424.6 149,716.9 557,725.2 3.4 Infrastructure Development 272,428.0 18,032.7 220,442.5 510,903.2 3.1 Automobile & Auto Ancillary 443,538.7 19,768.7 36,999.9 500,307.3 3.0 Consumer Services 465,465.8 — 28,102.4 493,568.2 3.0 Food and Beverage 433,042.2 — 39,007.2 472,049.4 2.9 Wholesale Trade—Non Industrial 417,954.8 — 26,147.5 444,102.3 2.7 Real Estate & Property Services 383,765.5 4,792.6 40,694.4 429,252.5 2.6 Wholesale Trade—Industrial 347,202.9 — 73,867.5 421,070.4 2.5 Road Transportation 406,376.4 — 10,269.5 416,645.9 2.5 Iron and Steel 321,587.7 12,486.0 80,515.7 414,589.4 2.5 Telecom 331,131.1 2,989.4 43,335.9 377,456.4 2.3 Textiles & Garments 324,419.6 6,135.7 43,748.6 374,303.9 2.3 Engineering 253,105.1 6,666.6 105,164.7 364,936.4 2.2 Agri Production—Food 350,859.6 — 963.1 351,822.7 2.1 Others (none greater than 2%) 3,288,555.0 108,769.3 546,407.8 3,943,732.1 23.8 Total Rs. 14,409,544.0 Rs. 583,020.2 Rs. 1,535,475.3 Rs. 16,528,039.5 100.0 As of March 31, 2023 Category Gross loans Fair value of Non-funded Total Total % (In millions, except percentages) Consumer Loans Rs. 4,410,346.6 Rs. — Rs. 2,550.8 Rs. 4,412,897.4 US$ 53,691.4 22.4 Retail Trade 973,274.3 — 36,013.4 1,009,287.7 12,279.9 5.1 Power 695,716.5 64,805.5 45,576.3 806,098.3 9,807.7 4.1 NBFC 690,783.9 91,595.9 15,995.5 798,375.3 9,713.8 4.1 Financial Institutions 659,117.5 72,068.3 4,435.4 735,621.2 8,950.3 3.7 Consumer Services 581,272.1 3,545.4 123,464.7 708,282.2 8,617.6 3.6 Food and Beverage 566,172.9 1,419.2 49,084.4 616,676.5 7,503.1 3.1 Road Transportation 568,414.2 — 12,512.4 580,926.6 7,068.1 3.0 Coal & Petroleum Products 353,329.8 115,279.8 102,771.3 571,380.9 6,952.0 2.9 Wholesale Trade—Non Industrial 530,057.5 1,988.8 31,887.0 563,933.3 6,861.3 2.9 Automobile & Auto Ancillary 483,658.4 17,656.8 38,921.4 540,236.6 6,573.0 2.7 Real Estate & Property Services 458,906.6 4,691.4 52,228.7 515,826.7 6,276.0 2.6 Wholesale 421,900.9 — 70,853.6 492,754.5 5,995.3 2.5 Infrastructure Development 284,690.7 15,220.2 170,452.2 470,363.1 5,722.9 2.4 Engineering 300,745.5 5,596.0 131,956.5 438,298.0 5,332.7 2.2 Agri—Allied 431,581.2 — 2,701.2 434,282.4 5,283.9 2.2 Iron and Steel 360,021.9 12,231.9 61,224.3 433,478.1 5,274.1 2.2 Textiles & Garments 390,883.0 4,984.5 34,729.1 430,596.6 5,239.0 2.2 Telecom 365,112.3 — 42,221.1 407,333.4 4,956.0 2.1 Agri Production—Food 401,720.3 — 1,040.5 402,760.8 4,900.4 2.0 Others (none greater than 2%) 3,490,386.3 92,104.1 719,829.4 4,302,319.8 52,346.0 22.0 Total Rs. 17,418,092.4 Rs. 503,187.8 Rs. 1,750,449.2 Rs. 19,671,729.4 US $ 239,344.5 100.0 The Bank’s ten largest exposures as of March 31, 2022 and March 31, 2023, based on the higher of the outstanding balance or the limit on loans, investments (including credit substitutes) and non-funded exposures (including derivatives), are as As of March 31, 2022 Funded Non-Funded Total (In millions) Borrower 1 Rs. 265,661.9 Rs. 500.0 Rs. 266,161.9 Borrower 2 245,435.0 — 245,435.0 Borrower 3 119,950.5 116,547.4 236,497.9 Borrower 4 150,283.8 — 150,283.8 Borrower 5 126,639.8 19,268.4 145,908.2 Borrower 6 142,600.0 — 142,600.0 Borrower 7 140,000.0 232.0 140,232.0 Borrower 8 137,700.0 199.2 137,899.2 Borrower 9 133,670.0 — 133,670.0 Borrower 10 108,591.5 17,855.7 126,447.2 As of March 31, 2023 Funded Non-Funded Total Total (In millions) Borrower 1 Rs. 284,002.5 Rs. — Rs. 284,002.5 US$ 3,455.4 Borrower 2 220,901.6 1,200.0 222,101.6 2,702.3 Borrower 3 205,801.0 — 205,801.0 2,504.0 Borrower 4 80,344.5 112,144.7 192,489.2 2,342.0 Borrower 5 185,299.0 — 185,299.0 2,254.5 Borrower 6 154,296.7 21,764.8 176,061.5 2,142.1 Borrower 7 155,565.7 60.0 155,625.7 1,893.5 Borrower 8 139,808.3 — 139,808.3 1,701.0 Borrower 9 121,560.0 6,030.3 127,590.3 1,552.4 Borrower 10 112,479.0 15,070.0 127,549.0 1,551.9

Property and equipment

Property and equipment	12 Months Ended
	Mar. 31, 2023
Property and equipment	11. Property and equipment Property and equipment by asset category is as follows: As of March 31, 2022 2023 2023 (In millions) Land and premises Rs. 22,754.4 Rs. 25,501.3 US$ 310.3 Software and systems 45,767.3 56,092.8 682.5 Equipment and furniture 106,945.7 132,553.5 1,612.9 Property and equipment, at cost 175,467.4 214,147.6 2,605.7 Less: Accumulated depreciation 109,641.0 126,577.9 1,540.1 Property and equipment, net Rs. 65,826.4 Rs. 87,569.7 US$ 1,065.6 Depreciation and amortization charged for the fiscal years

Goodwill

Goodwill	12 Months Ended
	Mar. 31, 2023
Goodwill	12. Goodwill Goodwill arising from a business combination is tested for impairment at least on an annual basis. There were no changes in the carrying amount of goodwill of Rs. 74,937.9 million (US$ 911.8 million) for the fiscal years ended March 31, 2022 and March 31, 2023. The entire amount of goodwill was allocated to the retail business.

Other assets

Other assets	12 Months Ended
	Mar. 31, 2023
Other assets	13. Other assets Other assets include the following: As of March 31, 2022 2023 2023 (In millions) Security deposits for leased property Rs. 5,687.6 Rs. 6,461.8 US$ 78.6 Sundry accounts receivable 52,033.2 84,217.8 1,024.7 Advance income tax (in excess of current tax expense) 41,941.6 52,006.4 632.8 Advances 10,705.4 14,724.3 179.1 Prepaid expenses 4,333.2 4,757.4 57.9 Deposits/Margins paid 10,330.7 14,959.0 182.0 Derivatives (see note 23) 80,202.3 121,749.4 1,481.3 Term placements 471,502.0 970,063.2 11,802.7 Receivable on account of trade date 2,025.2 8,442.2 102.7 Right use 71,572.2 89,989.3 1,094.9 Others ( ) 114,420.9 129,380.8 1,574.1 Total Rs. 864,754.3 Rs. 1,496,751.6 US$ 18,210.8 ( ) Others include equity securities with carrying value amounting to Rs. 14,736.7 22,103.4 of 2,665.9 2,640.8 of (7,633.5) 7,160.1 fiscal

Deposits

Deposits	12 Months Ended
	Mar. 31, 2023
Deposits	14. Deposits Deposits include demand deposits, which are non-interest-bearing, and savings and time deposits, which are interest-bearing. Deposits as of March 31, 2022 and March 31, 2023 were as follows: As of March 31, 2022 2023 2023 (In millions) Interest-bearing: Savings deposits Rs. 5,117,372.1 Rs. 5,624,911.4 US$ 68,437.9 Time deposits 8,080,607.6 10,472,547.9 127,418.8 Total interest-bearing deposits 13,197,979.7 16,097,459.3 195,856.7 Non-interest-bearing deposits 2,382,052.2 2,729,176.3 33,205.7 Total Rs. 15,580,031.9 Rs. 18,826,635.6 US$ 229,062.4 As of March 31, 2022 and March 31, 2023, time deposits of Rs. 6,186,602.3 million and Rs. 7,121,444.9 million, respectively, had a residual maturity of one year or less. The remaining deposits mature between one As of March 31, 2022 and March 31, 2023, time deposits in excess of Rs. 0.5 As of March 31, 2023, the scheduled maturities for total time deposits were as follows: As of March 31, 2023 (In millions) Due to mature in the fiscal year ending March 31: 2024 Rs. 7,121,444.9 US$ 86,646.1 2025 2,119,471.5 25,787.5 2026 518,151.5 6,304.3 2027 235,850.6 2,869.6 2028 341,065.1 4,149.7 Thereafter 136,564.3 1,661.6 Total Rs. 10,472,547.9 US$ 127,418.8

Short-term borrowings

Short-term borrowings	12 Months Ended
	Mar. 31, 2023
Short-term borrowings	15. Short-term borrowings Short-term borrowings are mainly comprised of money market borrowings which are unsecured and are utilized by the Bank for its operations. Short-term borrowings as of March 31, 2022 and March 31, 2023 were comprised of the following: As of March 31, 2022 2023 2023 (In millions) Borrowed in the call market Rs. 9,001.8 Rs. 14,359.5 US$ 174.7 Term borrowings from institutions/banks 114,500.0 735,131.5 8,944.3 Foreign currency borrowings 430,665.8 320,695.0 3,901.9 Bills rediscounted 19,711.5 239.8 Total Rs. 554,167.6 Rs. 1,089,897.5 US$ 13,260.7 Total borrowings outstanding: Maximum amount outstanding Rs. 805,872.6 Rs. 1,154,282.6 US$ 14,044.1 Average amount outstanding Rs. 377,877.2 Rs. 870,879.3 US$ 10,595.9 Weighted average interest rate 1.6 % 4.0 % 4.0 %

Long-term debt

Long-term debt	12 Months Ended
	Mar. 31, 2023
Long-term debt	16. Long-term debt Long-term debt as of March 31, 2022 and March 31, 2023 was comprised of the following: As of March 31, 2022 2023 2023 (In millions) Subordinated debt Rs. 259,452.5 Rs. 375,060.0 US$ 4,563.3 Others ( ) 1,295,854.3 1,681,587.2 20,459.8 Debt issuance cost (973.4 ) (2,210.8 ) (26.9 ) Total Rs. 1,554,333.4 Rs. 2,054,436.4 US$ 24,996.2 ( ) Includes securities sold under repurchase agreements amounting to Rs. 90,200.0 million with a stated interest rate of 4.0% per annum and Rs. 90,200.0 million (US$ 1,097.5 million) with stated interest rate of 4.2% per annum for the fiscal The below table presents the balance of long-term debt as of March 31, 2022 and March 31, 2023 and the related contractual rates and maturity dates: As of March 31, 2022 March 31, 2023 Maturity / Stated interest rates Total Maturity / Stated interest rates Total Total (In millions) Subordinated debt Subordinated debt (other than perpetual debt) 2023-2031 7.35% to 10.20% Rs. 89,759.4 2024-2033 7.35% to 10.20% Rs. 248,983.8 US$ 3,029.4 Perpetual debt — (1) 2023-2030 7.55% to 9.70% 93,848.2 2024-2030 7.55% to 9.40% 43,850.5 533.5 Perpetual debt — (2) 2027 3.70% 75,216.3 2027 3.70% 81,724.6 994.3 Others ( ) Variable rate — (1) 2023-2024 1.40% to 1.80% 40,045.9 2024-2026 1.40% to 4.80% 76,405.9 929.6 Variable rate — (2) 2023-2027 4.40% to 6.90% 82,243.1 2024-2029 4.50% to 9.44% 148,813.9 1,810.6 Fixed rate — (1) 2023-2030 2.80% to 9.21% 1,173,220.5 2024-2030 2.80% to 9.81% 1,374,137.4 16,719.0 Fixed rate — (2) — — — 2024 2.58% 80,520.3 979.8 Total Rs. 1,554,333.4 Rs. 2,054,436.4 US$ 24,996.2 ( ) Variable rate — (1), Perpetual debt — (2) and Fixed rate — (2) represent foreign currency debt. Variable rat e deb T-bill The scheduled maturities of long-term debt are set out below: As of March 31, 2023 (In millions) Due in the fiscal year ending March 31: 2024 Rs. 515,282.4 US$ 6,269.4 2025 231,738.2 2,819.5 2026 653,549.2 7,951.7 2027 141,079.6 1,716.5 2028 48,214.9 586.6 Thereafter 338,997.0 4,124.7 Total (1) Rs. 1,928,861.3 US$ 23,468.4 (1) The scheduled maturities of long-term debt do not include perpetual bonds of Rs. 125,575.1 During the f iscal fiscal As of March 31, 2022 and March 31, 2023, other long-term debt includes foreign currency borrowings from other banks aggregating to Rs. 40,170.0 million and Rs. 157,092.6 million, respectively, and functional currency borrowings aggregating to Rs. 1,255,684.3 million and

Accrued expenses and other liab

Accrued expenses and other liabilities	12 Months Ended
	Mar. 31, 2023
Accrued expenses and other liabilities	17. Accrued expenses and other liabilities Accrued expenses and other liabilities include the amounts set forth below: As of March 31, 2022 2023 2023 (In millions) Bills payable Rs. 130,937.4 Rs. 117,907.5 US$ 1,434.6 Remittances in transit 91,766.3 61,927.3 753.5 Accrued expenses 58,522.2 45,684.4 555.8 Accounts payable 152,309.2 206,920.4 2,517.6 Derivatives (see note 23) 74,819.2 98,783.5 1,201.9 Lease liabilities 78,138.0 97,658.9 1,188.2 Others 94,969.2 125,471.4 1,526.6 Total Rs. 681,461.5 Rs. 754,353.4 US$ 9,178.2 The Bank amortizes annual fees on credit cards over the contractual period of the fees. The unamortized annual fees as of March 31, 2022 and March 31, 2023 were Rs. 1,257.9 million and Rs. 1,194.7 million (US$ 14.5 million), respectively.

Accumulated other comprehensive

Accumulated other comprehensive income	12 Months Ended
	Mar. 31, 2023
Accumulated other comprehensive income	18. Accumulated other comprehensive income The below table presents the changes in AOCI after income tax for the fiscal years ended March 31, 2022 and March 31, 2023. AFS debt securities Foreign currency Total (In millions) Balance, March 31, 2021 Rs. 25,212.9 Rs. 1,973.4 Rs. 27,186.3 Net unrealized gain/(loss) arising during the period (36,088.6 ) 1,297.5 (34,791.1 ) Amounts reclassified to income (10,187.7 ) — (10,187.7 ) Balance, March 31, 2022 Rs. (21,063.4 ) Rs. 3,270.9 Rs. (17,792.5 ) AFS debt securities Foreign currency Total (In millions) Balance, March 31, 2022 Rs. (21,063.4 ) Rs. 3,270.9 Rs. (17,792.5 ) Net unrealized gain/(loss) arising during the period (52,522.8 ) 3,378.5 (49,144.3 ) Amounts reclassified to income (1,336.9 ) — (1,336.9 ) Balance, March 31, 2023 Rs. (74,923.1 ) Rs. 6,649.4 Rs. (68,273.7 ) Balance, March 31, 2023 US$ (911.6 ) US$ 80.9 US$ (830.7 ) The below table presents the reclassification out of AOCI by income line item and the related income tax effect for the fiscal years ended March 31, 2022 and March 31, 2023. As of March 31, 2022 2023 2023 (In millions) AFS debt securities: Realized (gain)/loss on sales of AFS debt securities, net Rs. (10,699.4 ) Rs. (1,857.5 ) US$ (22.7 ) Allowance on AFS debt securities (2,915.1 ) 70.9 0.9 Total before income tax Rs. (13,614.5 ) Rs. (1,786.6 ) US$ (21.8 ) Income tax 3,426.8 449.7 5.5 Net of income tax Rs. (10,187.7 ) Rs. (1,336.9 ) US$ (16.3 )

Non-interest revenue

Non-interest revenue	12 Months Ended
	Mar. 31, 2023
Non-interest revenue	19. Non-interest revenue Revenue Recognition Deposit-related fees Deposit-related fees consist of fees earned on consumer deposit activities and are generally recognized when the transaction occurs or as the service is performed. Consumer fees are earned on consumer deposit accounts for account maintenance and various transaction-based services, such as ATM transactions, wire transfer activities, check and money order processing, standing instruction processing, cash management services, etc. Lending-related fees Lending-related fees generally represent transactional fees earned from certain loan related services, guarantees and letters of credit (“LCs”). Third-party products-related fees Third-party products related fees consist of fees earned from distribution of third-party products such as insurance and mutual funds. Payments and cards business fees Payments and cards business fees include fees earned from merchant acquiring business and on Credit, Debit, Prepaid or Forex cards, among others. Cards business income includes annual and renewal fees, late and over-limit fees, currency conversion fees, as well as fees earned from interchange, cash advances and other miscellaneous transactions fees. Interchange fees are recognized upon settlement of the credit and debit card payment transactions and are generally determined on a percentage basis for credit and debit cards based on the corresponding payment network’s rates. Substantially all cards business related fees are recognized at the transaction date, except for certain time-based fees such as annual fees, which are recognized over 12 months. Payments business fees include fees earned from merchants net of interchange expenses paid to issuing banks, rentals from point-of-sale machines and merchant service charges. The table below presents the fees and commissions disaggregated by revenue source for the fiscal years ended March 31, 2021, March 31, 2022 and March 31, 2023. Fiscal year ended March 31, 2021 2022 2023 2023 (In millions) Deposit related fees Rs. 28,150.4 Rs. 37,415.4 Rs. 40,749.9 US$ 495.8 Lending related fees 30,973.1 40,532.5 48,878.2 594.7 Third-party products related fees 35,733.0 44,216.1 54,548.9 663.7 Payments and cards business fees 50,758.2 56,170.2 72,969.0 887.8 Others 19,795.7 24,645.3 22,457.7 273.2 Fees and commissions Rs. 165,410.4 Rs. 202,979.5 Rs. 239,603.7 US$ 2,915.2 The table below presents the fees and commission disaggregated by segment for the fiscal years ended March 31, 2021, March 31, 2022 and March 31, 2023. Fiscal year ended March 31, 2021 2022 2023 2023 (In millions) Retail Banking Rs. 153,018.2 Rs. 182,464.1 Rs. 215,252.5 US$ 2,618.9 Wholesale Banking 11,712.7 19,802.0 23,619.5 287.4 Treasury Services 679.5 713.4 731.7 8.9 Fees and commissions Rs. 165,410.4 Rs. 202,979.5 Rs. 239,603.7 US$ 2,915.2

Income taxes

Income taxes	12 Months Ended
	Mar. 31, 2023
Income taxes	20. Income taxes Income tax expense is comprised of the following: Fiscal year ended March 31, 2021 2022 2023 2023 (In millions) Current tax expense Rs. 122,087.4 Rs. 142,446.5 Rs. 156,782.9 US$ 1,907.6 Deferred tax expense/ (benefit) (8,267.3 ) (9,887.3 ) 12,280.9 149.4 Interest on income tax refund — — (2,946.4 ) (35.9 ) Income tax expense Rs. 113,820.1 Rs. 132,559.2 Rs. 166,117.4 US$ 2,021.1 Income tax expense/ (benefit fiscal million. Income tax (expense)/ benefit recorded in other comprehensive income was million for the fiscal years ended March 31, 2022 and March 31, 2023, respectively. Income before income tax expense and income tax expense are substantially all from India. The following is a reconciliation of income taxes at the Indian statutory income tax rate, the income tax rate of the Bank’s country of domicile, to income tax expense as reported: Fiscal year ended March 31, 2021 2022 2023 2023 (In millions) Income before income tax expense Rs. 439,826.5 Rs. 519,162.2 Rs. 662,381.8 US$ 8,058.9 Statutory income tax rate 25.17 % 25.17 % 25.17 % 25.17 % Expected income tax expense 110,695.5 130,662.7 166,708.3 2,028.3 Adjustments to reconcile expected income tax to actual income tax expense Interest on income tax refund — — (2,204.9 ) (26.8 ) Nondeductible stock-based compensation 2,668.7 3,493.1 1,645.9 20.0 Income subject to rates other than the statutory income tax rate — (2,347.6 ) (6.8 ) (0.1 ) Income exempt from i (62.3 ) — — — Others, net 518.2 751.0 (25.1 ) (0.3 ) Income tax expense Rs. 113,820.1 Rs. 132,559.2 Rs. 166,117.4 US$ 2,021.1 The tax effects of significant temporary differences are as follows: As of March 31, 2022 2023 2023 (In millions) Tax effect of: Deductible temporary differences: Allowance for credit losses Rs. 79,821.5 Rs. 74,143.7 US$ 902.1 Investments AFS debt securities 6,997.0 25,117.0 305.6 Lease liabilities 19,745.8 24,578.8 299.0 Employee benefits 728.1 709.9 8.6 Accrued expenses and other liabilities 3,772.1 3,939.2 47.9 Others 2,158.9 1,520.3 18.5 Deferred tax assets 113,223.4 130,008.9 1,581.7 Taxable temporary differences: Right-of-use assets 19,745.8 24,578.8 299.0 Loans 5,024.1 7,070.1 86.0 Investments, others 3,097.2 8,304.6 101.0 Deferred tax liabilities 27,867.1 39,953.5 486.0 Net deferred tax asset/ (liability) Rs. 85,356.3 Rs. 90,055.4 US$ 1,095.7 Management believes that the realization of the recognized deferred tax assets is more likely than not and the realization is based on a combination of reversing taxable temporary differences and expectations as to future pretax income. The total unrecognized tax benefit as of March 31, 2022 and March 31, 2023 is Rs. 46,774.3 million and Rs. 48,792.1 million, respectively. The major income tax jurisdiction for the Bank is India. The open tax years (first assessment by the tax ing A reconciliation of the beginning and ending balance of unrecognized tax benefits is as follows: Fiscal year ended March 31, 2022 2023 2023 (In millions) Opening balance Rs. 43,048.0 Rs. 46,774.3 US$ 569.1 Settlements related to prior year tax positions (1,985.0 ) — — Increase related to current year tax positions Rs. 5,711.3 Rs. 2,017.8 US$ 24.6 Closing balance Rs. 46,774.3 Rs. 48,792.1 US$ 593.7 The Bank’s total unrecognized tax benefits, if recognized, would reduce the income tax expense by Rs. 46,774.3 million and Rs. 48,792.1 million as of March 31, 2022 and March 31, 2023, respectively, and thereby would affect the Bank’s effective tax rate. All of the Bank’s unrecognized tax benefits are presented as unrecognized refund claims. Significant changes in the amount of unrecognized tax benefits within the next 12 months cannot be reasonably estimated as the changes would depend upon the progress of tax examinations with various tax authorities.

Stock-based compensation

Stock-based compensation	12 Months Ended
	Mar. 31, 2023
Stock-based compensation	21. Stock-based compensation The stock-based compensation plans of the Bank are as follows: Employees Stock Option Scheme (“ESOP”) The shareholders of the Bank approved in January 2000 Plan “A”, in June 2003 Plan “B”, in June 2005 Plan “C”, in June 2007 Plan “D”, in June 2010 Plan “E”, in June 2013 Plan “F” and in July 2016 Plan “G” of the Employees’ Stock Option Scheme (the “Plan”). The Bank reserved 100.0 million equity shares, with an aggregate nominal value of Rs.100.0 million, for issuance under each Plan “A”, “B” and “C”. Under Plan “D”, the Bank reserved 150.0 million equity shares with an aggregate nominal value of Rs.150.0 million. The Bank reserved 200.0 million equity shares with an aggregate nominal value of Rs. 200.0 million, for issuance under each of Plan “E”, “F” and “G”. Under the terms of each of these Plans, the Bank may issue stock options to employees and whole-time directors of the Bank, each of which is convertible into one equity share. Plan A provides for the issuance of options at the recommendation of the Nomination and Remuneration Committee of the Board (the “NRC”) at an average of the daily closing prices on the BSE Limited during the 60 days preceding the date of grant of options, which was the minimum prescribed option price under regulations then issued by the Securities and Exchange Board of India (“SEBI”). Plan B, Plan C, Plan D, Plan E, Plan F and Plan G provide for the issuance of options at the recommendation of the NRC at the closing price on the working day immediately preceding the date when options are granted. For Plan B the price is that quoted on an Indian stock exchange with the highest trading volume during the preceding two weeks, while for Plan C, Plan D, Plan E, Plan F and Plan G, the price is that quoted on an Indian stock exchange with the highest trading volume as of the working day preceding the date of grant. Such options vest at the discretion of the NRC. These options are exercisable for a period following vesting at the discretion of the NRC, subject to a maximum of five years, as set forth at the time of the grant. Presently, there are no stock options issued and outstanding under Plan A to Plan E. On October 24, 2020, the NRC approved, under Plan G, the grant of 57,466,600 options (Scheme XXXV) to the employees of the Bank. On July 31, 2021 and November 25, 2021 the NRC approved, under Plan G, the grant of 25,390,600 options (Scheme XXXVI) and the grant of 238,000 options (Scheme XXXVII), respectively, to the employees of the Bank. During fiscal year ended March 31, 2023, the NRC approved, under Plan G, the grant of 30,480,145 options (Schemes XXXVIII to XLIV). Restricted Stock Units (“RSUs”) On May 14, 2022, the shareholders of the Bank approved the Employees Stock Incentive Master Scheme 2022 (“ESIS-2022”). The Bank reserved 100.0 million equity shares with an aggregate nominal value of Rs.100.0 million, for the the date of approval by the share, to employees and whole - set forth at the time of the grant. During the Modification of employee stock option schemes During the fiscal years ended March 31, 2021, March 31, 2022 and March 31, 2023, there were no other modifications to employee stock option schemes. Assumptions used The fair value of employee stock option schemes has been estimated on the dates of each grant using a binomial option pricing model with the following assumptions: Fiscal years ended March 31, 2021 2022 2023 Dividend yield 0.61% 0.43%-0.46% 0.51%-0.97% Expected volatility 20.13%-28.93% 21.71%-31.79% 21.97%-33.50% Risk-free interest rate 4.63%-5.75% 4.99%-6.43% 6.14%-7.59% Expected term (in years) 2.65-5.43 2.59-5.36 2.53-7.25 The fair value of restricted stock units has been estimated on the dates of each grant using a binomial option pricing model with the following assumptions: Fiscal year ended March 31, 2023 Dividend yield 0.47%-0.75% Expected volatility 23.68%-35.35% Risk-free interest rate 7.07%-7.57% Expected term (in years) 1.0- 4.0 The Bank recognizes compensation expense related to stock based compensation plans over the requisite service period, generally based on the instruments’ grant-date fair value, reduced by expected forfeitures. Ultimately, the compensation cost for all awards that vest is recognized. Activity and other details Activity in the options available to be granted under the employee stock option scheme is as follows: Number of options available to be granted 2021 2022 2023 Options available to be granted, beginning of period 159,487,350 104,694,170 81,992,420 Equity shares allocated for grant under the plan — — — Options granted (57,466,600 ) (25,628,600 ) (30,480,145 ) Forfeited/lapsed 2,673,420 2,926,850 2,701,890 Options available to be granted, end of period 104,694,170 81,992,420 54,214,165 Activity in the RSUs outstanding under the various Employees’ Stock Incentive Master Scheme as of March 31, 2023: Number of RSUs available to be granted RSUs available to be granted, beginning of period — Equity shares allocated for grant under the scheme 100,000,000 RSUs granted (2,891,000 ) Forfeited/lapsed — RSUs available to be granted, end of period 97,109,000 Activity in the options outstanding under the employee stock option scheme is as follows: Fiscal years ended March 31, 2021 2022 2023 Options Weighted Options Weighted Options Weighted Options outstanding, beginning of period 142,865,602 Rs. 899.03 168,168,760 Rs. 1,063.79 158,106,016 Rs. 1,175.65 Granted 57,466,600 1,235.80 25,628,600 1,427.29 30,480,145 1,425.69 Exercised (29,490,022 ) 596.85 (32,764,494 ) 796.52 (34,201,810 ) 998.73 Forfeited (2,032,110 ) 1,163.29 (2,639,100 ) 1,231.84 (2,175,700 ) 1,274.53 Lapsed (641,310 ) 929.57 (287,750 ) 870.34 (526,190 ) 1,033.65 Options outstanding, end of period 168,168,760 Rs. 1,063.79 158,106,016 Rs. 1,175.65 151,682,461 Rs. 1,264.86 Options exercisable, end of period 64,453,260 Rs. 834.48 65,321,116 Rs. 1,036.49 65,124,916 Rs. 1,162.96 Weighted average fair value of options granted during the year Rs. 320.42 Rs. 415.12 Rs. 548.11 Activity in the RSUs outstanding under the various Employees’ Stock Incentive Master Scheme as at March 31, 2023: Fiscal years ended March 31, 2023 Units Weighted average RSUs outstanding, beginning of period — Rs. — Granted 2,891,000 1.0 Exercised — — Forfeited — — Lapsed — — RSUs outstanding, end of period 2,891,000 Rs. 1.0 RSUs exercisable, end of period — Rs. — Weighted average fair value of RSUs granted during the year Rs. 1,382.34 The following summarizes information about stock options outstanding as of March 31, 2023: As of March 31, 2023 Plan Range of exercise price Number of shares arising Weighted average remaining life (years) Weighted average exercise price Plan F Rs. 716.60 (or US$ 8.72) 7,449,626 0.83 Rs. 716.60 Plan G Rs. 882.85 to Rs. 1,673.10 (or US$ 10.74 to US$ 20.36) 144,232,835 2.87 Rs. 1,293.20 The following summarizes information about RSUs outstanding as of March 31, 2023: As of March 31, 2023 Plan Range of exercise price Number of Weighted Weighted ESIS 2022 Rs. 1.00 (or US$ 0) 2,891,000 3.02 1.00 The intrinsic value, of options exercised during the years ended March 31, 2021, March 31, 2022 and March 31, 2023 at the grant date was nil, nil and Rs. 0.5 million and at the exercise date was Rs. 26,446.8 million, Rs. 22,077.7 million and Rs. 20,891.2 million, respectively. The aggregate intrinsic value as of the grant date and as of of of for the ESOP’s fiscal of of The intrinsic value, of RSUs exercised during the fiscal year o o o f s a o o

Retirement benefits

Retirement benefits	12 Months Ended
	Mar. 31, 2023
Retirement benefits	22. Retirement benefits Gratuity In accordance with Indian law, the Bank provides for gratuity, a defined benefit retirement plan, covering eligible employees. The plan provides for lump sum payments to vested employees at retirement, resignation, death while in employment or on termination of employment in an amount equivalent to 15 days’ eligible salary payable for each completed year of service. Vesting occurs upon completion of five years of service. The Bank makes annual contributions to funds administered by trustees and managed by insurance companies for amounts notified by said insurance companies, and in respect of certain employees, the Bank makes contributions to a fund set up for the purpose and administered by the board of trustees. The contributions are invested in specific designated instruments as permitted by Indian law. The Bank accounts for the liability for future gratuity benefits using the projected unit cost method based on an actuarial valuation done on March 31 of every year. The following table sets out the funded status of the gratuity plan and the amounts recognized in the Bank’s financial statements as of March 31, 2022 and March 31, 2023: As of March 31, 2022 2023 2023 (In millions) Change in benefit obligations: Projected benefit obligation (“PBO”), beginning of the period Rs. 9,819.6 Rs. 10,688.7 US$ 130.1 Service cost 1,268.0 1,398.6 17.0 Interest cost 631.2 773.4 9.4 Actuarial(gains)/ losses (260.6 ) (252.4 ) (3.1 ) Benefits paid (769.5 ) (1,116.7 ) (13.6 ) Projected benefit obligation, end of the period 10,688.7 11,491.6 139.8 Change in plan assets: Fair value of plan assets, beginning of the period 8,344.6 10,019.3 121.9 Expected return on plan assets 574.1 668.2 8.1 Actuarial gains/(losses) 237.1 (390.0 ) (4.7 ) Actual return on plan assets 811.2 278.2 3.4 Employer contributions 1,633.0 1,735.3 21.1 Benefits paid (769.5 ) (1,116.7 ) (13.6 ) Fair value of plan assets, end of the period 10,019.3 10,916.1 132.8 Funded Status Rs. (669.4 ) Rs. (575.5 ) US$ (7.0 ) The Bank’s expected contribution to the gratuity fund for the next fiscal year is estimated at Rs. 1,824.1 million. The accumulated benefit obligation as of March 31, 2022 and March 31, 2023 was Rs. 6,914.8 million and Rs. 8,294.7 million, respectively. The vested accumulated benefit obligation as on March 31, 2022 and March 31, 2023 was Rs. 6,397.4 million and Rs. 7,519.8 million, respectively. Net gratuity cost for the years ended March 31, 2021, March 31, 2022 and March 31, 2023 was comprised of the following components: Fiscal years ended March 31, 2021 2022 2023 2023 (In millions) Service cost Rs. 1,107.0 Rs. 1,268.0 Rs. 1,398.6 US$ 17.0 Interest cost 561.6 631.2 773.4 9.4 Expected return on plan assets (448.4 ) (574.1 ) (668.2 ) (8.1 ) Actuarial (gains)/losses (463.6 ) (497.7 ) 137.6 1.6 Net gratuity cost Rs. 756.6 Rs. 827.4 Rs. 1,641.4 US$ 19.9 The assumptions used in accounting for the gratuity plan are set out below: Fiscal years ended March 31, 2021 2022 2023 (% per annum) Discount rate ( ) 4.4-7.0 5.1-7.3 5.1-7.9 Rate of increase in compensation levels of covered employees 5.0-9.0 6.0-11.0 6.0-11.0 Rate of return on plan assets 4.4-7.0 5.1-7.0 5.1-7.2 Mortality rates used are based on the published “Indian Assured Lives Mortality (2012-2014) Ultimate” table ( ) Weighted average assumptions used to determine both benefit obligations and net periodic benefit cost. The rate of return on plan assets is based on historical returns, the current market conditions, anticipated future assets allocation and expected future returns. The rate of return on plan assets represents a long-term average view of the expected return. The following benefit payments, which includes benefits attributable to expected future service, as appropriate, are expected to be paid. Fiscal years ending March 31, Benefit payments (In millions) 2024 Rs. 1,638.6 2025 1,352.0 2026 1,108.3 2027 966.1 2028 1,024.9 2029 - 2033 3,919.2 The expected benefit payments are based on the same assumptions used to measure the Bank’s benefit obligations as of March 31, 2023. The gratuity contributions of the Bank which are administered by a trust set up for the purpose are managed by two insurance companies, and, in respect of certain employees , As of March 31, 2023 Funds managed ( ) Funds managed ( ) Funds Government securities 81.3 % 32.4 % 26.1 % Debenture and bonds 9.7 % 17.2 % 24.5 % Equity securities 8.9 % 43.9 % — Other 0.1 % 6.5 % 49.4 % Total 100.0 % 100.0 % 100.0 % ( ) The data pertaining to plan investment assets measured at fair value by level and total at March 31, 2023 are provided separately. Pension In respect of pensions payable to certain erstwhile CBoP employees, which are payable pursuant to a defined benefit scheme, the Bank contributes 10% of basic salary to a pension fund set up by the Bank and administered by the board of trustees, and the balance amount is provided based on an actuarial valuation at the balance sheet date conducted by an independent actuary. In respect of employees who have moved to a cost to company (“CTC”) driven compensation structure and have completed services up to 15 years as on the date of movement to a CTC driven compensation structure, any contribution made until such date, and any additional one-time contribution made for employees (who have completed more than 10 years but less than 15 years) stand frozen and will be converted into an annuity on separation after a lock-in-period of two years. Hence, for this category of employees, liability stands frozen and no additional provision is required except for interest, if any. In respect of employees who accepted the offer and have completed services for more than 15 years, the pension would be paid based on the employee’s salary as of the date of movement to a CTC driven compensation structure and a provision is made based on an actuarial valuation at the balance sheet date conducted by an independent actuary. The following table sets out the funded status of the pension plan and the amounts recognized in the Bank’s financial statements as of March 31, 2022 and March 31, 2023: As of March 31, 2022 2023 2023 (In millions) Change in benefit obligations: Projected benefit obligation (“PBO”), beginning of the period Rs. 862.0 Rs. 840.9 US$ 10.3 Plan amendment (prior service cost) 76.9 — — Service cost 16.1 18.5 0.2 Interest cost 55.8 57.3 0.7 Actuarial (gains)/losses 34.4 221.4 2.7 Benefits paid (204.3 ) (120.1 ) (1.5 ) Projected benefit obligation, end of the period 840.9 1018.0 12.4 Change in plan assets: Fair value of plan assets, beginning of the period 3.3 8.7 0.1 Expected return on plan assets 0.4 0.4 — Actuarial gains/(losses) 2.3 2.2 — Actual return on plan assets 2.7 2.6 — Employer contributions 207.0 111.8 1.5 Benefits paid (204.3 ) (120.1 ) (1.5 ) Fair value of plan assets, end of the period 8.7 3.0 0.1 Funded Status Rs. (832.2) Rs. (1,015.0) US$ (12.3 ) The Bank’s expected contribution to the pension fund for the next fiscal year is estimated at Rs. 229.5 million. The accumulated benefit obligation as of March 31, 2022 and March 31, 2023 was Rs. 354.6 million and Rs. 528.6 million, respectively. The vested accumulated benefit obligation as of March 31, 2022 and March 31, 2023 was Rs. 353.8 million and Rs. 527.5 million, respectively. Net pension cost for the fiscal years ended March 31, 2021, March 31, 2022 and March 31, 2023 was comprised of the following components: As of March 31, 2021 2022 2023 2023 (In millions) Service cost Rs. 14.6 Rs. 93.0 Rs. 18.5 US$ 0.2 Interest cost 37.7 55.8 57.3 0.7 Expected return on plan assets (3.2 ) (0.4 ) (0.4 ) — Actuarial (gains)/losses 329.6 32.1 219.2 2.7 Net pension cost Rs. 378.7 Rs. 180.5 Rs. 294.6 US$ 3.6 The assumptions used in accounting for the pension plan are set out below: Fiscal years ended March 31, 2021 2022 2023 (% per annum) Discount rate ( ) 7.0 7.3 7.9 Rate of increase in compensation levels of covered employees 7.0 7.0 10.0 Rate of return on plan assets 6.5 6.5 6.5 Mortality rates used are based on the published “Indian Assured Lives Mortality (2012-2014) Ultimate” table. ( ) Weighted average assumptions used to determine both benefit obligations and net periodic benefit cost. The following benefit payments, which include benefits attributable to expected future service, as appropriate, are expected to be paid. Fiscal years ending March 31, Benefit payments (In millions) 2024 Rs. 110.7 2025 103.7 2026 77.8 2027 86.7 2028 92.9 2029-2033 766.6 The expected benefits are based on the same assumptions used to measure the Bank’s benefit obligations as of March 31, 2023. The retirement funds of a section of the employees are managed by a trust set up for the purpose. The trust essentially manages the defined retirement benefit plans belonging to certain employees. The funds are mainly invested in government securities and other corporate bonds. The weighted-average asset allocation of said plan assets for the pension benefits as of March 31, 2023 is as follows: Asset category Funds managed Government securities 90.1 % Debenture and bonds 9.9 % Other — Total 100.0 % For information on fair value measurements, including descriptions of Levels 1, 2 and 3 of the fair value hierarchy and the valuation methods employed by the Bank, see note 30—Fair value measurements. Plan investment assets for gratuity funds and the pension fund measured at fair value by level and in total as of March 31, 2022 and March 31, 2023 are summarized in the table below. As of March 31, 2022 As of March 31, 2023 Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 (In millions) Funds managed by insurance company (1) Rs. — Rs. — Rs. 779.8 Rs. — Rs. — Rs. 864.5 Funds managed by insurance company (2) — 9,016.0 — — 9,829.4 — Funds managed by trust — Government securities — 68.1 — — 60.8 — — Debenture and bonds — 53.0 — — 54.8 — — Others 111.1 — — 109.6 — — Total Rs. 111.1 Rs. 9,137.1 Rs. 779.8 Rs. 109.6 Rs. 9,945.0 Rs. 864.5 US$ 1.3 US$ 121.0 US$ 10.5 The table below presents a reconciliation of all Plan investment assets measured at fair value using significant unobservable inputs (Level 3) during the fiscal years ended March 31, 2022 and March 31, 2023. Funds managed by Insurance 2022 2023 2023 (In millions) Particulars Opening balance Rs. 664.1 Rs. 779.8 US$ 9.5 Realized interest credited to fund 48.1 54.8 0.7 Contribution during the period 131.1 148.6 1.8 Amount paid towards claim (63.5 ) (118.7 ) (1.5 ) Closing balance Rs. 779.8 Rs. 864.5 US$ 10.5 Superannuation Eligible employees of the Bank are entitled to receive retirement benefits under the Bank’s superannuation fund. The superannuation fund is a defined contribution plan under which the Bank annually contributes a sum equivalent to 13% of the employee’s eligible annual salary (15% for the Managing Director, Executive Directors and for certain employees of CBoP) to the insurance companies in India, which administers the fund. The Bank has no liability for future superannuation fund benefits other than its annual contribution, and recognizes such contributions as an expense in the year incurred. The Bank incurred Rs. 1,513.7 million, Rs. 1,795.3 million and Rs. 2,322.0 million towards superannuation expense for the fiscal Provident fund In accordance with Indian law, eligible employees of the Bank are entitled to receive benefits under the provident fund, a defined contribution plan in which both the employee and the Bank contribute monthly at a determined rate (currently 12% of an employee’s eligible salary). These contributions are made to a fund set up by the Bank and administered by a board of trustees, except that, out of the employer’s contribution, an amount equal to 8.33% of the lower of employee’s monthly eligible salary or Rs. 0.015 million, is contributed by the Bank to the Pension Scheme administered by the Regional Provident Fund Commissioner. Employees are credited with interest, which is subject to a government specified minimum rate. The Bank has no liability for future provident fund benefits other than its annual contribution and the shortfall, if any, between the government-specified minimum rate and the yield on the fund’s assets, and recognizes such contributions as an expense in the year incurred. The amount contributed being Rs. 5,429.6 million, Rs. 6,844.7 million and Rs. 8,238.2 million to the Provident Fund Trust and Regional Provident Fund Commissioner for the fiscal National Pension Scheme In respect of employees who opt for contribution to the National Pension Scheme, the Bank contributes a certain percentage of the basic salary of employees to the aforesaid scheme, a defined contribution plan, which is managed and administered by pension fund management companies. The Bank has no liability other than its contribution, and recognizes such contributions as an expense in the year incurred. The amount contributed being Rs. 57.2 million and Rs. 78.0 million to the National Pension Scheme for the fiscal years ended March 31, 2022 and March 31, 2023, respectively. Compensated absences The Bank has provided for unutilized leave balances as on March 31, 2023 standing to the credit of each employee on an actuarial valuation conducted by an independent actuary.

Financial instruments

Financial instruments	12 Months Ended
	Mar. 31, 2023
Financial instruments	23. Financial instruments Foreign exchange and derivative contracts The Bank enters into forward exchange contracts, currency options, forward rate agreements, currency swaps and rupee interest rate swaps with inter-bank participants on its own account and for customers. These transactions enable customers to transfer, modify or reduce their foreign exchange and interest rate risks. Forward exchange contracts are commitments to buy or sell foreign currency at a future date at the contracted rate. Currency swaps are commitments to exchange cash flows by way of interest in one currency against another currency and exchange of principal amount at maturity based on predetermined rates. Interest rate swaps are commitments to exchange fixed and floating rate interest cash flows. A forward rate agreement gives the buyer the ability to determine the underlying rate of interest for a specified period commencing on a specified future date (the settlement date) when the settlement amount is determined as the difference between the contracted rate and the market rate on the settlement date. Currency options give the buyer the right, but not an obligation, to buy or sell specified amounts of currency at agreed rates of exchange on or before a specified future date. The market and credit risk associated with these products, as well as the operating risks, are similar to those relating to other types of financial instruments. Market risk is the exposure created by movements in interest rates and exchange rates during the tenure of the transaction. The extent of market risk affecting such transactions depends on the type and nature of the transaction, the value of the transaction and the extent to which the transaction is uncovered. Credit risk is the exposure to loss in the event of default by counterparties. The extent of loss on account of a counterparty default will depend on the replacement value of the contract at the ongoing market rates. The Bank uses its pricing models to determine the fair value of its derivative financial instruments. The Bank records credit risk valuation adjustments on derivative financial instruments in order to reflect the credit quality of the counterparties and its own credit quality. The Bank calculates valuation adjustments on derivatives based on observable market credit risk spreads. The following table presents the aggregate notional principal amounts of the Bank’s outstanding forward exchange and other derivative contracts as of March 31, 2022 and March 31, 2023, together with the fair value on each reporting date. As of March 31, 2022 Notional Gross Assets Gross Liabilities Net Fair Value (In millions) Interest rate derivatives Rs. 5,142,612.3 Rs. 28,564.1 Rs. 27,644.4 Rs. 919.7 Forward rate agreements 50,610.7 1,574.1 14.8 1,559.3 Currency options 434,371.3 1,845.1 2,439.5 (594.4 ) Currency swaps 308,757.4 10,463.6 4,312.3 6,151.3 Forward exchange contracts 6,551,871.8 37,755.4 40,408.2 (2,652.8 ) Total Rs. 12,488,223.5 Rs. 80,202.3 Rs. 74,819.2 Rs. 5,383.1 As of March 31, 2023 Notional Gross Assets Gross Liabilities Net Fair Value Notional Net Fair Value (In millions) Interest rate derivatives Rs. 5,974,019.2 Rs. 41,148.2 Rs. 36,627.4 Rs. 4,520.8 US$ 72,685.5 US$ 55.0 Forward rate agreements 140,693.0 1,848.4 541.4 1,307.0 1,711.8 15.9 Currency options 257,641.1 1,402.4 1,578.3 (175.9 ) 3,134.7 (2.1 ) Currency swaps 372,114.3 21,753.7 7,213.4 14,540.3 4,527.5 176.9 Forward exchange contracts 9,052,221.4 55,596.7 52,823.0 2,773.7 110,137.7 33.7 Total Rs. 15,796,689.0 Rs. 121,749.4 Rs. 98,783.5 Rs. 22,965.9 US$ 192,197.2 US$ 279.4 The Bank has not designated the above contracts as accounting hedges and, accordingly, the contracts are recorded at fair value on the balance sheet with changes in fair value recorded in net income. The gross assets and the gross liabilities are recorded in “other assets” and “accrued expenses and other liabilities”, respectively. The following table summarizes certain information related to derivative amounts recognized in income: Non-interest revenue, net– 2021 2022 2023 2023 (In millions) Interest rate derivatives Rs. 773.9 Rs. 3,207.7 Rs. 5,921.5 US$ 72.0 Forward rate agreements 205.9 1,374.1 (2.0 ) — Currency options 1,191.1 167.3 1,200.3 14.6 Currency swaps (3,309.2 ) (1,682.0 ) 1,609.1 19.6 Forward exchange contracts (2,114.7 ) (1,645.1 ) 6,637.2 80.8 Total gains/(losses) Rs. (3,253.0 ) Rs. 1,422.0 Rs. 15,366.1 US$ 187.0 Offsetting The following table shows the impact of netting arrangements on derivative financial instruments, repurchase and reverse repurchase agreements that are subject to enforceable master netting arrangements or similar agreements, but are not offset in accordance with ASC 210-20-45 and ASC 815-10-45. The Bank enters into International Swaps and Derivatives Association, Inc. (“ISDA”) master netting agreements or similar agreements with substantially all of the Bank’s foreign exchange and derivative contract counterparties. These master netting agreements, give the Bank, in the event of default by the counterparty, the right to liquidate collaterals held or placed and to offset receivables and payables with the same counterparty. In the table below, the Bank has presented the gross derivative assets and liabilities adjusted for the effects of master netting agreements and collaterals received or pledged. Transactions with counterparties for Securities sold under agreements to repurchase (“repos”) and Securities purchased under agreements to resell (“reverse repos”) are settled through the Clearing Corporation of India Limited (“CCIL”), a centralized clearinghouse. Collaterals received or pledged are comprised of highly liquid investments. For undertaking the above transactions, power of attorney is executed by the Bank and the counterparties in favor of CCIL to liquidate the securities pledged in the event of default. As of March 31, 2022 Amounts subject to enforceable netting arrangements Effects of offsetting on balance sheet Related amounts not offset Gross Amounts Amounts Net amounts Financial Financial (1) Net amount (In millions) Financial assets Derivative assets Rs. 80,202.3 Rs. — Rs. 80,202.3 Rs. 48,942.8 Rs. 8,022.9 Rs. 23,236.6 Securities purchased under agreements to resell 373,053.3 — 373,053.3 — 373,053.3 — Financial liabilities Derivative liabilities Rs. 74,819.2 Rs. — Rs. 74,819.2 Rs. 48,942.8 Rs. 1,697.2 Rs. 24,179.2 Securities sold under repurchase agreements 151,844.9 — 151,844.9 — 151,844.9 — Long-term debt 90,200.0 — 90,200.0 — 90,200.0 — (1) Comprised of securities and cash collaterals. These amounts are limited to the asset/liability balance, and accordingly, do not include excess collateral received/pledged. As of March 31, 2023 Amounts subject to enforceable netting arrangements Effects of offsetting on balance sheet Related amounts not offset Gross Amounts Amounts Net amounts Financial Financial Net amount Net amount (In millions) Financial assets Derivative assets Rs. 121,749.4 Rs. — Rs. 121,749.4 Rs. 73,045.2 Rs. 19,402.2 Rs. 29,302.0 US$ 356.5 Securities purchased under agreements to resell 455,275.4 — 455,275.4 — 455,275.4 — — Financial liabilities Derivative liabilities Rs. 98,783.5 Rs. — Rs. 98,783.5 Rs. 73,045.2 Rs. 5,084.6 Rs. 20,653.7 US$ 251.3 Securities sold under repurchase agreements — — — — — — — Long Term debt 90,200.0 — 90,200.0 — 90,200.0 — — (1) Comprised of securities and cash collaterals. These amounts are limited to the asset/liability balance, and accordingly, do not include excess collateral received/pledged. Guarantees As a part of its commercial banking activities, the Bank has issued guarantees and documentary credits, such as letters of credit, to enhance the credit standing of its customers. These generally represent irrevocable assurances that the Bank will make payments in the event that the customer fails to fulfill its financial or performance obligations. Financial guarantees are obligations to pay a third-party beneficiary where a customer fails to make payment towards a specified financial obligation. Performance guarantees are obligations to pay a third-party beneficiary where a customer fails to perform a The credit risk associated with these products, as well as the operating risks, is similar to those relating to other types of financial instruments. In accordance with FASB ASC 460-10, the Bank has recognized a liability of Rs. 5,760.7 million as of March 31, 2022 and of Rs. 7,041.8 million as o Details of guarantees and documentary credits outstanding are set out below: As of March 31, 2022 2023 2023 (In millions) Nominal values: Bank guarantees: Financial guarantees Rs. 422,406.2 Rs. 494,191.3 US$ 6,012.8 Performance guarantees 417,227.2 519,953.0 6,326.2 Documentary credits 615,639.6 614,555.5 7,477.3 Total Rs. 1,455,273.0 Rs. 1,628,699.8 US$ 19,816.3 Estimated fair value: Guarantees Rs. (5,760.7 ) Rs. (7,041.8 ) US$ (85.7 ) Documentary credits (822.8 ) (869.3 ) (10.6 ) Total Rs. (6,583.5 ) Rs. (7,911.1 ) US$ (96.3 ) As part of its risk management activities, the Bank continuously monitors the creditworthiness of customers as well as guarantee exposures. If a customer fails to perform a specified obligation, a beneficiary may draw upon the guarantee by presenting documents in compliance with the guarantee. In that event, the Bank makes payment on account of the defaulting customer to the beneficiary up to the full notional amount of the guarantee. The customer is obligated to reimburse the Bank for any such payment. If the customer fails to pay, the Bank liquidates any collateral held and sets off accounts; if insufficient collateral is held, the Bank recognizes a loss. Margins in the form of cash and fixed deposit available to the Bank to reimburse losses realized under guarantees amounted to Rs. 182.0 billion and Rs. 222.0 billion as of March 31, 2022 and March 31, 2023, respectively. Other property or security may also be available to the Bank to cover losses under these guarantees. Undrawn commitments The Bank has outstanding undrawn commitments to provide loans and financing to customers. These commitments aggregated to Rs. 730.9 billion and Rs. 372.3 billion (US$ 4.5 billion) as of March 31, 2022 and March 31, 2023, respectively. Among other things, the making of a loan is subject to a review of the creditworthiness of the customer at the time the customer seeks to borrow, at which time the Bank has the unilateral right to decline to make the loan. If the Bank were to make such loans, the interest rates would be dependent on the lending rates in effect when the loans were disbursed. Further, the Bank has unconditional cancellable commitments aggregating to Rs. 5,528.4 billion and Rs. 7,273.0 billion (US$ 88.5 billion) as of March 31, 2022 and March 31, 2023, respectively. The allowance for credit losses included in accrued expenses and other liabilities on off-balance sheet credit exposures and undrawn commitments is as follows: As of March 31 , 2022 2023 2023 (In millions) Allowance for credit losses, beginning of the period Rs. 5,581.5 Rs. 6,087.6 US$ 74.1 Provision for credit exposures 506.1 (268.9 ) (3.3 ) Allowance for credit losses, end of the period Rs. 6,087.6 Rs. 5,818.7 US$ 70.8

Estimated fair value of financi

Estimated fair value of financial instruments	12 Months Ended
	Mar. 31, 2023
Estimated fair value of financial instruments	24. Estimated fair value of financial instruments The Bank’s financial instruments include financial assets and liabilities recorded on the balance sheet, including instruments such as foreign exchange and derivative contracts. Management uses its best judgment in estimating the fair value of the Bank’s financial instruments; however, there are inherent weaknesses in any estimation technique. Therefore, for substantially all financial instruments, the fair value estimates presented herein are not necessarily indicative of all the amounts the Bank could have realized in a sales transaction as of March 31, 2022 and March 31, 2023, respectively. The estimated fair value amounts as of March 31, 2022 and March 31, 2023 have been measured as of the respective year ends, and have not been re-evaluated or updated for purposes of these financial statements subsequent to those respective dates. As such, the estimated fair value of these financial instruments subsequent to the respective reporting dates may be different than the amounts reported at each year end. A comparison of the fair value and carrying value of financial instruments is set out below: As of March 31, 2022 March 31, 2023 Estimated fair value Estimated fair value Carrying Level 1 Level 2 Level 3 Total Carrying Level 1 Level 2 Level 3 Total Carrying Estimated (In millions) Financial Assets: Cash and due from banks, Rs. 1,122,031.1 Rs. 1,122,031.1 Rs. — Rs. — Rs. 1,122,031.1 Rs. 1,387,395.2 Rs. 1,387,395.2 Rs. — Rs. — Rs. 1,387,395.2 US$ 16,880.3 US$ 16,880.3 Investments held for trading 53,199.5 304.1 52,895.4 — 53,199.5 135,831.1 184.1 135,647.0 — 135,831.1 1,652.6 1,652.6 Investments available for sale debt 4,388,563.1 174,680.3 4,069,988.1 143,894.7 4,388,563.1 4,878,844.0 507,504.1 4,222,904.3 148,435.6 4,878,844.0 59,360.6 59,360.6 Securities purchased under 373,053.3 — 373,053.3 — 373,053.3 455,275.4 — 455,275.4 — 455,275.4 5,539.3 5,539.3 Loans 14,036,872.2 — 3,311,277.1 10,976,971.8 14,288,248.9 17,052,927.9 — 4,138,188.7 13,027,096.1 17,165,284.8 207,481.7 208,848.8 Accrued interest receivable 134,467.7 — 134,467.7 — 134,467.7 186,091.2 — 186,091.2 — 186,091.2 2,264.2 2,264.2 Other assets 686,475.6 3,889.8 680,762.1 — 684,651.9 1,292,086.7 3,313.7 1,286,529.0 — 1,289,842.7 15,720.7 15,693.4 Financial Liabilities Interest-bearing deposits 13,197,979.7 — 13,240,403.7 — 13,240,403.7 16,097,459.3 — 16,102,822.0 — 16,102,822.0 195,856.7 195,921.9 Non-interest-bearing deposits 2,382,052.2 — 2,382,052.2 — 2,382,052.2 2,729,176.3 — 2,729,176.3 — 2,729,176.3 33,205.7 33,205.7 Securities sold under repurchase 151,844.9 — 151,844.9 — 151,844.9 — — — — — — — Short-term borrowings 554,167.6 — 552,737.9 — 552,737.9 1,089,897.5 — 1,088,380.5 — 1,088,380.5 13,260.7 13,242.2 Accrued interest payable 82,412.8 — 82,412.8 — 82,412.8 112,463.2 — 112,463.2 — 112,463.2 1,368.3 1,368.3 Long-term debt 1,554,333.4 — 1,554,540.2 — 1,554,540.2 2,054,436.4 — 2,045,541.9 — 2,045,541.9 24,996.2 24,888.0 Accrued expenses and other liabilities 499,905.7 — 499,905.7 — 499,905.7 567,643.6 — 567,643.6 — 567,643.6 6,906.5 6,906.5

Segment information

Segment information	12 Months Ended
	Mar. 31, 2023
Segment information	25. Segment information The Bank operates in three reportable segments: wholesale banking, retail banking and treasury services. The revenue and related expense recognition policies are set out in note 2. Substantially all operations and assets are based in India. The retail banking segment serves retail customers through a branch network and other delivery channels. This segment raises deposits from customers and grant loans, provides credit cards and debit cards, and distributes third-party financial products, such as mutual funds and insurance to such customers. Revenues of the retail banking segment are derived from interest earned on retail loans, fees for banking services, profit from foreign exchange and derivative transactions and interest earned from other segments for surplus funds placed with those segments. Expenses of this segment are primarily comprised of interest expense on deposits, infrastructure and premises expenses for operating the branch network and other delivery channels, personnel costs, other direct overheads and allocated expenses. The Bank’s retail banking loan products also include loans to small and medium enterprises for commercial vehicles, construction equipment and other business purposes. Such grouping ensures optimum utilization and deployment of specialized resources in the retail banking business. The wholesale banking segment provides loans and transaction services to corporate customers. As discussed above, loans to small and medium enterprises for commercial vehicles, construction equipment and other business purposes are included in the retail banking segment. Revenues of the wholesale banking segment consist of interest earned on loans given to corporate customers, investment income from credit substitutes, interest earned on the cash float arising from transaction services, fees from such transaction services and profits from foreign exchange and derivative transactions with wholesale banking customers. The principal expenses of the segment consist of interest expense on funds borrowed from other segments, premises expenses, personnel costs, other direct overheads and allocated expenses. The treasury services segment undertakes trading operations on proprietary account (including investments in government securities), foreign exchange operations and derivatives trading both on proprietary account and customer flows and borrowings. Revenues of the treasury services segment primarily consist of fees and gains and losses from trading operations and of net interest revenue/expense from investments in government securities and borrowings. Revenues from foreign exchange and derivative operations and customer flows are classified under the retail or wholesale segments depending on the profile of the customer. Segment income and expenses include certain allocations. Interest income is charged by a segment that provides funding to another segment, based on yields benchmarked to an internally developed composite yield curve which broadly tracks market-discovered interest rates. Directly identifiable overheads are attributed to a segment at actual amounts incurred. Indirect shared costs, principally corporate office expenses, are generally allocated to each segment on the basis of area occupied, number of staff, volume and nature of transactions. The wholesale banking segment includes unallocated tax balances and other items. Summarized segment information for the fiscal years ended March 31, 2021, March 31, 2022 and March 31, 2023: Fiscal year ended March 31, 2021 2022 Retail Wholesale Treasury Total Retail Wholesale Treasury Total (In millions) Net interest income/ Rs. 361,343.5 Rs. 278,431.0 Rs. 43,912.0 Rs. 683,686.5 Rs. 418,823.0 Rs. 297,694.0 Rs. 32,322.5 Rs. 748,839.5 Net interest income/ 176,420.0 (143,863.7 ) (32,556.3 ) — 141,001.2 (113,339.0 ) (27,662.2 ) — Net interest revenue 537,763.5 134,567.3 11,355.7 683,686.5 559,824.2 184,355.0 4,660.3 748,839.5 Less: Provision for credit losses 145,822.0 8,411.4 — 154,233.4 122,622.6 4,356.9 — 126,979.5 Net interest revenue, after provision for credit losses 391,941.5 126,155.9 11,355.7 529,453.1 437,201.6 179,998.1 4,660.3 621,860.0 Non-interest revenue 175,447.7 72,420.1 5,107.9 252,975.7 203,468.5 55,813.2 11,292.5 270,574.2 Non-interest expense (306,461.1 ) (34,238.4 ) (1,902.8 ) (342,602.3 ) (345,321.5 ) (25,544.1 ) (2,406.4 ) (373,272.0 ) Income before income tax Rs. 260,928.1 Rs. 164,337.6 Rs. 14,560.8 Rs. 439,826.5 Rs. 295,348.6 Rs. 210,267.2 Rs. 13,546.4 Rs. 519,162.2 Income tax expense Rs. 113,820.1 Rs. 132,559.2 Segment assets: Segment total assets Rs. 9,356,987.2 Rs. 7,011,959.9 Rs. 1,610,834.9 Rs. 17,979,782.0 Rs. 11,384,802.9 Rs. 8,106,671.0 Rs. 1,622,231.6 Rs. 21,113,705.5 Fiscal year ended March 31, 2023 Retail Banking Wholesale Treasury Total Total (In millions) Net interest income/(expense) (external) Rs. 474,489.5 Rs. 367,857.6 Rs. 71,641.4 Rs. 913,988.5 US$ 11,120.5 Net interest income/(expense) (internal) 168,806.2 (116,903.5 ) (51,902.7 ) — — Net interest revenue 643,295.7 250,954.1 19,738.7 913,988.5 11,120.5 Less: Provision for credit losses 86,920.2 (12,706.4 ) — 74,213.8 903.0 Net interest revenue, after provision for credit losses 556,375.5 263,660.5 19,738.7 839,774.7 10,217.5 Non-interest revenue 252,576.6 42,286.9 (3,477.0 ) 291,386.5 3,545.1 Non-interest expense (432,689.9 ) (34,261.7 ) (1,827.8 ) (468,779.4 ) (5,703.7 ) Income before income tax Rs. 376,262.2 Rs. 271,685.7 Rs. 14,433.9 Rs. 662,381.8 US$ 8,058.9 Income tax expense Rs. 166,117.4 US$ 2,021.1 Segment assets: Segment total assets Rs. 13,599,750.2 Rs. 9,274,409.1 Rs. 2,881,464.7 Rs. 25,755,624.0 US$ 313,366.9

Commitments and contingencies

Commitments and contingencies	12 Months Ended
	Mar. 31, 2023
Commitments and contingencies	26. Commitments and contingencies Commitments and contingent liabilities other than for off balance sheet financial instruments (see note 23) are as follows: Capital commitments The Bank has entered into committed capital contracts, principally for branch expansion and technology upgrades. The estimated amounts of contracts remaining to be executed on the capital account as of March 31, 2022 and March 31, 2023 aggregated Rs. 21,115.5 million and Rs. 25,666.0 million, respectively. Contingencies The Bank is party to various legal proceedings in the normal course of business. The Bank estimates the provision for contingencies which primarily include indirect taxes since no precedents exist which could be used as points of reference. The amount of claims against the Bank towards indirect taxes and other claims which are not acknowledged as debts as of Lease commitments The Bank is party to operating leases for certain of its office premises and employee residences, with a renewal at the option of the Bank. Operating lease right-of-use assets and lease liabilities were as follows: As of March 31, 2022 2023 2023 (In millions) Right-of-use assets Rs. 71,572.2 Rs. 89,989.3 US$ 1,094.9 Lease liabilities 78,138.0 97,658.9 1,188.2 The total lease expenses were as follows: As of March 31, 2021 2022 2023 2023 (In millions) The total minimum lease expense during the year recognized in the consolidated statement of income Rs. 14,244.4 Rs. 13,866.6 Rs. 17,591.4 US$ 214.0 The total operating cash flow for operating lease expenses during the fiscal years The future minimum lease payments as of March 31, 2023 were as follows: Due in fiscal year ending March 31: Operating leases (In millions, except for weighted averages) 2024 Rs. 15,081.4 US$ 183.5 2025 14,631.0 178.0 2026 14,527.2 176.8 2027 14,041.9 170.8 2028 13,236.8 161.1 Thereafter 71,890.1 874.7 Total lease payments Rs. 143,408.4 US$ 1,744.9 Less: imputed interest 45,749.5 556.6 Total operating lease liabilities 97,658.9 1,188.2 Weighted average remaining lease term (in years) 9.9 9.9 Weighted average discount rate 7.1 % 7.1 % The Bank enters into lease agreements to obtain the right-of-use assets for its business operations, substantially all of which are premises. Lease liabilities and right-of-use assets are recognized when the Bank enters into operating leases and represent obligations and rights to use these assets over the period of the leases and are re-measured for modifications. Operating lease liabilities include fixed payments for the contractual duration of the lease, adjusted for renewals or terminations. The lease agreements entered into by the Bank do not include any material residual value guarantees and material restrictive covenants. The lease payments are discounted using a rate determined when the lease is recognized. In general, the Bank does not know the discount rate implicit in the lease, and so the Bank estimates a discount rate that the Bank believes approximates a collateralized borrowing rate for the estimated duration of the lease term. At lease commencement, lease liabilities are recognized based on the present value of the remaining lease payments and discounted using the incremental borrowing rate. Right-of-use assets are reported in other assets on the consolidated balance sheet and related lease liabilities are reported in accrued expenses and other liabilities. The amortization of operating lease right-of-use assets and the accretion of operating lease liabilities are reported together as fixed lease expenses and are included in non-interest expense- premises and equipment. The lease expense is recognized on a straight-line basis over the life of the lease. The lease agreements entered into by the Bank generally have renewal and escalation clauses. These agreements also in general permit the Bank to terminate the lease arrangement within a certain period of notice of termination. The Bank does not include renewal or termination options in the establishment of the lease term when it is not reasonably certain that it will exercise them. The Bank has elected to exclude leases with terms of less than one year from the operating lease right-of-use assets and lease liabilities. The related short-term lease expense is included in non-interest expense- premises and equipment. The Bank accounted for lease-related concessions obtained as a result of the COVID-19 pandemic in accordance with guidance in Topic 842. As of March 31, 2023, the Bank had additional undiscounted operating lease commitments of Rs. 845.5 million, predominantly for premises, with leases which have not yet commenced. These leases are expected to commence 3 Reward points The movement in provision for credit card and debit card reward points as of March 31, 2022 and March 31, 2023 is as follows: As of March 31, 2022 2023 2023 (In millions) Opening provision of reward points Rs. 6,387.9 Rs. 6,359.1 US$ 77.4 Provision made during the year 4,651.3 5,537.3 67.4 Utilization/write back of provision (4,137.7 ) (4,901.3 ) (59.6 ) Effect of change in rate of accrual of reward points (542.4 ) (31.9 ) (0.4 ) Closing provision of reward points Rs. 6,359.1 Rs. 6,963.2 US$ 84.8

Related party transactions

Related party transactions	12 Months Ended
	Mar. 31, 2023
Related party transactions	27. Related party transactions The Bank’s principal related parties consist of HDFC Limited, its principal owner, subsidiaries of HDFC Limited and affiliates of the Bank. Transactions disclosed under “others” primarily consist of transactions with subsidiaries of HDFC Limited and affiliates of the Bank. The Bank enters into transactions with its related parties, such as providing banking services, sharing costs and service providers, purchasing services, making joint investments, and borrowing from related parties and subletting premises. The Bank is prohibited from making loans to companies with which it has directors in common. The Bank, being an authorized dealer, deals in foreign exchange and derivative transactions with certain parties which include the principal owner and related companies. The foreign exchange and derivative transactions are undertaken in line with the RBI guidelines. The Bank’s related party balances and transactions are in the normal course of business and are summarized as follows: Balances payable to related parties are as follows: As of March 31, 2022 2023 Principal owner Others Total Principal Others Total Total (In millions) Balances in non-interest-bearing deposits Rs. 20,695.1 Rs. 6,273.0 Rs. 26,968.1 Rs. 25,637.8 Rs. 8,715.1 Rs. 34,352.9 US$ 418.0 Balances in interest-bearing deposits 6,719.8 875.0 7,594.8 1,755.1 1,611.9 3,367.0 41.0 Accrued expenses and other liabilities 641.4 — 641.4 773.5 — 773.5 9.4 Total Rs. 28,056.3 Rs. 7,148.0 Rs. 35,204.3 Rs. 28,166.4 Rs. 10,327.0 Rs. 38,493.4 US$ 468.4 Balances receivable from related parties are as follows: As of March 31, 2022 2023 Principal Others Total Principal Others Total Total (In millions) Loans Rs. — Rs. 7.4 Rs. 7.4 Rs. — Rs. 7.5 Rs. 7.5 US$ 0.1 Other assets 656.5 1,498.7 2,155.2 748.0 2,167.3 2,915.3 35.5 Total Rs. 656.5 Rs. 1,506.1 Rs. 2,162.6 Rs. 748.0 Rs. 2,174.8 Rs. 2,922.8 US$ 35.6 Purchase of property and equipment from related parties for the fiscal fiscal fiscal Included in the determination of net income are the following significant transactions with related parties: Fiscal year ended March 31, 2021 2022 2023 Principal Others Total Principal Others Total Principal Others Total Total (In millions) Non-interest revenue-Fees Rs. 3,246.5 Rs. 19,801.6 Rs. 23,048.1 Rs. 4,639.3 Rs. 22,939.5 Rs. 27578.8 Rs. 5,888.2 Rs. 26,766.6 Rs. 32,654.8 US$ 397.3 Interest and Dividend revenue — 552.5 552.5 — 0.1 0.1 — 0.1 0.1 — Interest expense-Deposits (108.0 ) (171.3 ) (279.3 ) (204.3 ) (82.2 ) (286.5 ) (95.3 ) (606.1 ) (701.4 ) (8.5 ) Non-interest expense-Administrative and other (5,874.4 ) (2,856.3 ) (8,730.7 ) (7,182.4 ) (4,558.9 ) (11,741.3 ) (8,631.1 ) (5,524.8 ) (14,155.9 ) (172.2 ) Non-interest expense-Premises and equipment (24.3 ) (5.2 ) (29.5 ) (19.2 ) — (19.2 ) (15.6 ) — (15.6 ) (0.2 ) Other transactions with the Bank’s principal owner are as follows: During the fiscal fiscal fiscal For contributions made to provident funds and pension funds set up by the Bank, see note 22—Retirement benefits.

Earnings per equity share

Earnings per equity share	12 Months Ended
	Mar. 31, 2023
Earnings per equity share	28. Earnings per equity share A reconciliation of the equity shares used in the computation of basic and diluted earnings per equity share has been provided below. Potential equity shares in the nature of ESOP with average outstanding balance of 73,917,840, 19,064,987 and 49,152,741 were excluded from the calculation of diluted earnings per share for the years ended March 31, 2021, March 31, 2022 and March 31, 2023, respectively, as these were anti-dilutive. As of March 31, 2021 2022 2023 Weighted average number of equity shares used in computing basic earnings per equity share 5,499,587,357 5,533,113,800 5,565,620,562 Effect of potential equity shares for stock options outstanding 23,890,989 30,366,023 21,552,766 Weighted average number of equity shares used in computing diluted earnings per equity share 5,523,478,346 5,563,479,823 5,587,173,328 The following are reconciliations of basic and diluted earnings per equity share and earnings per ADS. Fiscal years ended March 31, 2021 2022 2023 2023 Basic earnings per share Rs. 59.27 Rs. 69.76 Rs. 89.02 US$ 1.08 Effect of potential equity shares for stock options outstanding 0.25 0.38 0.34 0.01 Diluted earnings per share Rs. 59.02 Rs. 69.38 Rs. 88.68 US$ 1.07 Basic earnings per ADS Rs. 177.81 Rs. 209.28 Rs. 267.06 US$ 3.24 Effect of potential equity shares for stock options outstanding 0.75 1.14 1.02 0.03 Diluted earnings per ADS Rs. 177.06 Rs. 208.14 Rs. 266.04 US$ 3.21 Dividends Any dividends declared by the Bank are based on the profit available for distribution as reported in the statutory financial statements of the Bank prepared in accordance with Indian GAAP. Additionally, the Banking Regulation Act and related regulations require the Bank to transfer 25 % of its Indian GAAP profit after-tax to a non-distributable statutory reserve and to meet certain other conditions in order to pay dividends without prior RBI approval. As per the RBI guidelines, the dividend payout cannot exceed 35% of net income as calculated under Indian GAAP. Accordingly, the net income reported in these financial statements may not be fully distributable in that year. Dividends declared for the fiscal years ended March 31, 2021 and March 31, 2022 were Rs. 6.5 per equity share and Rs. 15.5 per equity share, respectively. On April 22, 2021, the RBI, in a notification, directed the banks to restrict dividend payouts for Fiscal 2021 to 50 % determined in terms of RBI regulations to conserve capital and stay resilient amid the COVID-19 crisis. Accordingly, the Bank has paid a dividend of Rs. 6.5 per equity share for the fiscal year ended March 31, 2021.

Subsidiaries

Subsidiaries	12 Months Ended
	Mar. 31, 2023
Subsidiaries	29. Subsidiaries HDB Financial Services Limited (“HDBFSL”) is a non-deposit taking non-banking finance company and a subsidiary of the Bank. As of equity interest. HDFC Securities Ltd. (“HSL”) offers trading facilities in a range of equity, fixed income and derivative products to its clients. As of and its subsidiaries effectively hold

Fair value measurement

Fair value measurement	12 Months Ended
	Mar. 31, 2023
Fair value measurement	30. Fair value measurement FASB ASC 820 Fair Value Measures and Disclosures defines fair value, establishes a framework for measuring fair value in US GAAP, and expands disclosures about fair value measurements. The valuation hierarchy is based upon the transparency of inputs to the valuation of an asset or liability as of the measurement date. The three levels are defined as follows: Level of input Level 1 Unadjusted quoted market prices in active markets that are accessible at the measurement date for identical unrestricted assets or liabilities. Level 2 Quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument. Level 3 Inputs that are both significant to the fair value measurement and unobservable (i.e., supported with little or no market activity). The following is a description of the valuation methodologies used for instruments measured at fair value, as well as the general classification of such instruments pursuant to the valuation hierarchy. These valuation methodologies were applied to all of the Bank’s financial assets and financial liabilities carried at fair value. For Level 1 instruments , The Bank uses its quantitative pricing models to determine the fair value of its derivative instruments. These models use multiple market inputs, including interest rates, prices and indices to generate continuous yield or pricing curves and volatility factors to value the positions that are observable directly or indirectly. Valuation adjustments may be made to ensure that financial instruments are recorded at fair value. These adjustments may include amounts to reflect counterparty credit quality and the Bank’s creditworthiness, among other things, as well as unobservable parameters. Any such valuation adjustments are applied consistently over time. Financial assets and financial liabilities measured at fair value on a recurring basis: AFS debt securities: AFS debt securities are carried at fair value. Such fair values were based on quoted market prices, where available. If quoted market prices did not exist, fair values were estimated using the market yield on the balance period to maturity on similar instruments and similar credit risks. The fair value of asset-backed and mortgage-backed securities is estimated based on revised estimated cash flows at each balance sheet date, discounted at current market pricing for transactions with similar risk. A reduction in the estimated cash flows of these instruments will adversely impact the value of these securities. A change in the timing of these estimated cash flows will also impact the value of these securities. Trading securities: Trading securities are carried at fair value based on quoted market prices or market observable inputs. Held to maturity securities: There were no HTM securities as of March 31, 2022 and March 31, 2023. The following table summarizes investments measured at fair value on a recurring basis as of March 31, 2022, segregated by the level of valuation inputs within the fair value hierarchy utilized to measure fair value: Fair Value Measurements Using Particulars Total Quoted prices in Significant other Significant (In millions) Trading account securities Rs. 53,199.5 Rs. 304.1 Rs. 52,895.4 Rs. — Securities available-for-sale 4,388,563.1 174,680.3 4,069,988.1 143,894.7 Equity securities ( ) 12,070.8 3,889.8 8,181.0 — Total Rs. 4,453,833.4 Rs. 178,874.2 Rs. 4,131,064.5 Rs. 143,894.7 ( ) Equity securities classified within other assets. The following table summarizes investments measured at fair value on a recurring basis as of March 31, 2023, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value: Fair Value Measurements Using Particulars Total Quoted prices in Significant other Significant (In millions) Trading account securities Rs. 135,831.1 Rs. 184.1 Rs. 135,647.0 Rs. — Securities available-for-sale 4,878,844.0 507,504.1 4,222,904.3 148,435.6 Equity securities ( ) 19,462.6 3,313.7 16,148.9 — Total Rs. 5,034,137.7 Rs. 511,001.9 Rs. 4,374,700.2 Rs. 148,435.6 Total US$ 61,250.0 US$ 6,217.3 US$ 53,226.7 US$ 1,806.0 ( ) Equity securities classified within other assets. The following table summarizes certain additional information about changes in the fair value of Level 3 assets pertaining to instruments carried at fair value for the fiscal years ended March 31, 2022 and March 31, 2023: Particulars As of March 31, 2022 (In millions) Beginning balance at April 1, 2021 Rs. 161,163.9 Total gains or losses (realized/ unrealized) — Included in net income — — Included in other comprehensive income (2,841.2 ) Purchases/additions 77,995.6 Sales — Issuances — Settlements (92,423.6 ) Transfers into Level 3 — Transfers out of Level 3 — Foreign currency translation adjustment — Ending balance at March 31, 2022 Rs. 143,894.7 Total amount of gains/ (losses) included in net income attributable to change in unrealized gains/ (losses) relating to assets still held at reporting date Rs — Change in unrealized gains/ losses for the period included in other comprehensive income for assets held at the end of the reporting period Rs (3,055.8 ) Particulars As of March 31, 2023 (In millions) Beginning balance at April 1, 2022 Rs. 143,894.7 Total gains or losses (realized/unrealized) — Included in net income — — Included in other comprehensive income (2,776.3 ) Purchases/additions 110,969.4 Sales — Issuances — Settlements (103,652.2 ) Transfers into Level 3 — Transfers out of Level 3 — Foreign currency translation adjustment — Ending balance at March 31, 2023 Rs. 148,435.6 Total amount of gains/ (losses) included in net income attributable to change in unrealized gains/ (losses) relating to assets still held at reporting date Rs — Change in unrealized gains/ (losses) for the period included in other comprehensive income for assets held at the end of the reporting period Rs (1,867.6) Derivatives: The Bank enters into forward exchange contracts, currency options, forward rate agreements, currency swaps and rupee interest rate swaps with inter-bank participants on its own account and for customers. These transactions enable customers to transfer, modify or reduce their foreign exchange and interest rate risks. Forward exchange contracts are commitments to buy or sell foreign currency at a future date at the contracted rate. Currency swaps are commitments to exchange cash flows by way of interest in one currency against another currency and exchange of principal amount at maturity based on predetermined rates. Rupee interest rate swaps are commitments to exchange fixed and floating rate cash flows in rupees. The Bank uses its pricing models to determine the fair value of its derivative instruments. These models use market inputs that are observable directly or indirectly. The following table summarizes derivative instruments measured at fair value on a recurring basis as of March 31, 2022, segregated by the level of valuation inputs within the fair value hierarchy: Fair Value Measurements Using Particulars Total Quoted prices in Significant other Significant (In millions) Derivative assets Rs. 80,202.3 Rs. — Rs. 80,202.3 Rs. — Derivative liabilities Rs. 74,819.2 Rs. — Rs. 74,819.2 Rs. — The following table summarizes derivative instruments measured at fair value on a recurring basis as of March 31, 2023, segregated by the level of valuation inputs within the fair value hierarchy: Fair Value Measurements Using Particulars Total Quoted prices in Significant other Significant (In millions) Derivative assets Rs. 121,749.4 Rs. — Rs. 121,749.4 Rs. — Derivative liabilities Rs. 98,783.5 Rs. — Rs. 98,783.5 Rs. —

Risk and uncertainties

Risk and uncertainties	12 Months Ended
	Mar. 31, 2023
Risks and Uncertainties [Abstract]
Risk and uncertainties	31. Risk and uncertainties a) The COVID-19 pandemic affected the world economy over the previous more than two years. The extent to which any new wave of COVID-19 b) On September 3, 2020, a securities class action lawsuit was filed against the Bank and certain of its current and former directors in the United States District Court for the Eastern District of New York (the “Court”). As amended, the complaint alleged that the Bank, its former managing director, Mr. Aditya Puri, and the present managing director and CEO, Mr. Sashidhar Jagdishan, made materially false and misleading statements regarding certain aspects of the Bank’s business and compliance policies, which the complaint alleged resulted in the Bank’s ADS price declining on July 13, 2020, thereby allegedly causing damage to the Bank’s investors. On June 7, 2023, the Court dismissed the lawsuit with prejudice, whereby the plaintiffs cannot refile the same claim before the Court. Accordingly, no liability has been recorded in the Bank’s consolidated financial statements. c) The Bank continues to monitor the developments in the ongoing war between Russia and Ukraine which complicates the geopolitical landscape. The United States, the United Kingdom and the European Union have expanded sanctions significantly against Russia which could impact global markets and thus the Bank and its customers. The Bank seeks to manage the associated impacts on its customers and business.

Subsequent events

Subsequent events	12 Months Ended
	Mar. 31, 2023
Subsequent Events [Abstract]
Subsequent events	32. Subsequent events a) In its meeting held on April 4, 2022, the Board of Directors of the Bank approved a composite scheme of amalgamation (the “Scheme”) for the amalgamation of: (i) HDFC Investments Limited and HDFC Holdings Limited, each a subsidiary of HDFC Limited, with and into HDFC Limited, and (ii) HDFC Limited with and into HDFC Bank (the “Proposed Transaction”). The share exchange ratio shall be 42 equity shares of HDFC Bank (each having a face value of Rs. 1.0) for every 25 Following the Board meeting held on April 4, 2022, the parties to the Scheme filed a company scheme application with the National Company Law Tribunal, Mumbai Bench (“NCLT”). Pursuant to the order dated October 14, 2022 by the NCLT, a shareholders’ meetings of HDFC Bank and HDFC Limited were convened. The Scheme was approved by the requisite majority of shareholders on November 25, 2022. On receipt of such shareholders’ approval, the parties to the Scheme filed a joint company scheme petition before the NCLT seeking sanction of the Scheme. The NCLT, after hearing the parties to the Scheme, sanctioned the Scheme on March 17, 2023. In accordance with Clause 42 of the Scheme, the effectiveness of the Scheme is inter alia Upon the Scheme becoming effective, the Bank will issue equity shares to the shareholders of HDFC Limited as on the record date, which is to be determined by the Boards of Directors of HDFC Limited and HDFC Bank, and the equity shares held by HDFC Limited in the Bank will be extinguished. The shares proposed to be issued pursuant to the Proposed Transaction will not be registered with the SEC under the Securities Act of 1933 or the securities law of any state or other jurisdiction of the United States, and are being offered and sold in reliance on certain exemptions from registration under the Securities Act of 1933. b) In its meeting held on April 15, 2023, the Board of Directors of the Bank recommended a dividend of Rs. 19.0 per share for the fiscal year ended March 31, 2023 subject to approval of the shareholders at the next Annual General Meeting to be held. The amount of such dividend aggregated to o

Summary of significant accoun_2

Summary of significant accounting policies (Policies)	12 Months Ended
	Mar. 31, 2023
Principles of consolidation	a. Principles of consolidation The consolidated financial statements include the accounts of HDFC Bank Limited and its subsidiaries. The Bank consolidates subsidiaries in which, directly or indirectly, it holds more than 50% of the voting rights and/or has control. Entities where the Bank holds 20% to 50% of the voting rights and/or has the ability to exercise significant influence are accounted for under the equity method. These investments are included in other assets and the Bank’s proportionate share of income or loss is included in n
Basis of presentation	b. Basis of presentation These financial statements have been prepared in accordance with the Generally Accepted Accounting Principles in the United States of America (“US GAAP”). US GAAP differs in certain material respects from Generally Accepted Accounting Principles in India, the requirements of India’s Banking Regulation Act 1949 and related regulations issued by the Reserve Bank of India (“RBI”) (collectively “Indian GAAP”), which form the basis of the statutory general purpose financial statements of the Bank in India. Principal differences, insofar as they relate to the Bank, include the determination of the allowance for credit losses, classification and valuation of investments, accounting for deferred taxes, stock-based compensation, loan origination fees, derivative financial instruments, business combination, lease accounting and the presentation format and disclosures of the financial statements and related notes.
Use of estimates	c. Use of estimates The preparation of financial statements in conformity with US GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of these financial statements and the reported amounts of revenues and expenses for the years presented. Actual results could differ from these estimates. Material estimates included in these financial statements that are susceptible to change include the allowance for credit losses, the valuation of unquoted investments, impairment in securities, valuation of derivatives, stock-based compensation, unrecognized tax benefits, valuation of lease liabilities and impairment assessment of goodwill.
Cash and cash equivalents	d. Cash and due from banks, and restricted cash Cash and due from banks comprise of cash and deposit with banks that have original maturities of 90 days or less. The Bank has captioned cash and cash equivalent as “cash and due from banks, and restricted cash” on the consolidated balance sheets. Cash and due from banks includes restricted cash (see note 3).
Customer acquisition costs	e. Customer acquisition costs Customer acquisition costs principally consist of commissions paid to third-party referral agents who source retail loans and such costs are deferred and amortized as a yield adjustment over the life of the loans. Advertising and marketing expenses incurred to solicit new business are expensed as incurred.
Investments in securities	f. Investments in securities Investments consist of securities purchased as part of the Bank’s treasury operations, such as government securities and other debt securities, and investments purchased as part of the Bank’s wholesale banking operations, such as credit substitute securities issued by the Bank’s wholesale banking customers. Credit substitute securities typically consist of commercial paper and debentures issued by the same customers with whom the Bank has a lending relationship in its wholesale banking business. Investment decisions for credit substitute securities are subject to the same credit approval processes as for loans, and the Bank bears the same customer credit risk as it does for loans extended to those customers. Additionally, the yield and maturity terms are generally directly negotiated by the Bank with the issuer. As the Bank’s exposures to such securities are similar to its exposures on its loan portfolio, additional disclosures have been provided on impairment status in note 7 and on concentrations of credit risk in note 10. All other securities, including mortgage-and asset-backed securities, are actively managed as part of the Bank’s treasury operations. The issuers of such securities are either government, public financial institutions or private issuers. These investments are typically purchased from the market, and debt securities are generally publicly-rated. Securities that are held principally for resale in the near term are classified as held for trading (“HFT”) and are carried at fair value, with changes in fair value recorded in net income. Debt securities that management has the positive intent and ability to hold to maturity are classified as held to maturity (“HTM”) and are carried at amortized cost. All debt securities that are not classified as HTM or HFT are classified as available for sale (“AFS”) debt securities and are carried at fair value. Unrealized gains and losses on such securities, net of applicable taxes, are reported in accumulated other comprehensive income/(loss), a separate component of shareholders’ equity. Equity securities are classified under other assets. Marketable securities are measured at fair value and any change in fair value is Fair values are based on market quotations, where a market quotation is available or otherwise based on present values at current interest rates for such investments. Transfers between categories are recorded at fair value on the date of the transfer.
Impairment of securities	g. Impairment of debt securities The Bank conducts a review of all AFS debt securities with fair value below their carrying value or with zero loss expectation. The Bank evaluates whether the decline in fair value has resulted from credit losses or other factors. In making this assessment, management considers the extent to which fair value is less than amortized cost, any changes to the rating of the security by a rating agency, and adverse conditions specifically related to the security, among other factors. If the assessment indicates that a credit loss exists, the present value of cash flows to be collected from the security are compared to the amortized cost basis of the security. If the present value of cash flows expected to be collected is less than the amortized cost basis, a credit loss exists and an allowance for credit losses is recorded through a provision for credit loss expense, limited by the amount that fair value is less than the amortized cost basis. Any impairment that has not been recorded through an allowance for credit losses is recognized in other comprehensive income. The allowance is increased or decreased if credit conditions subsequently worsen or improve. A reversal of credit losses is recognized in earnings. The Bank recognizes the entire difference between amortized cost basis and fair value in earnings for impaired AFS debt securities that the Bank has an intent to sell or for which the Bank believes it will more-likely-than-not be required to sell prior to recovery of the amortized cost basis. The Bank applied ASC 326 to AFS debt securities when other-than-temporary impairment has been recognized before adoption. Amortized cost of a security, including the security’s effective interest rate where an other-than-temporary impairment had been recognized up to March 31, 2020, has remained unchanged. Amounts previously recognized in accumulated other comprehensive income (“AOCI”) as of the adoption date that relate to improvements in cash flows continue to be accreted to interest income over the remaining life of the security on a level-yield basis. Recoveries of amounts previously written off relating to improvements in cash flows after the date of adoption are recorded as income in the period received. The Bank does not record an allowance on accrued interest receivables on the balance sheet due to its policy to reverse interest income on debt securities in a timely manner in line with the Bank’s non-accrual and past due policies and also on any debt security classified as non-performing. The Bank does not purchase debt securities with credit deterioration.
Loans	h. Loans The Bank grants retail and wholesale loans to customers. Loans that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are reported at their outstanding unpaid principal balances adjusted for an allowance for credit losses. Loan origination fees and certain direct origination costs are deferred and recognized as adjustments to net income over the lives of the related loans. Interest is accrued on the unpaid principal balance and is included in interest income. Loans are generally placed on “non-accrual” status when interest or principal payments are ninety days past due or if they are considered non-performing, at which time no further interest is accrued and any unrealized interest recognized in the income statement is reversed. Interest income and principal payments on loans placed on non-accrual status are recognized when received. Loans are returned to accrual status when all principal and interest amounts contractually due are brought current and future payments are reasonably assured.
Allowance for credit losses	i. Allowance for credit losses The Bank provides an allowance for credit losses based on management’s estimate of losses inherent in the loan portfolio which includes troubled debt restructuring. The allowance for credit losses consists of allowances for retail loans and wholesale loans. The Bank’s allowance for credit losses comprises: • the allowance for loan losses, which covers the Bank’s loan portfolios and is presented separately on the balance sheet in Loans, • the allowance for lending-related commitments, which is recognized on the balance sheet in Accrued expenses and other liabilities, • the allowance for credit losses on investment securities, which covers the Bank’s AFS debt securities and is recognized on the balance sheet in Investments AFS debt securities; and • the allowance for credit losses on other financial assets measured at amortized cost, and other off-balance sheet credit exposures, which is recognized on the balance sheet in Accrued expenses and other liabilities. All changes in the allowance for credit losses are recognized in the income statement. The Bank’s policies used to determine its allowance for credit losses and its allowance for lending-related commitments are described in the following paragraph: The Bank’s portfolio is bifurcated into Retail and Wholesale portfolios, wherein the Retail portfolio is segmented into homogenous pools using various factors such as nature of product, delinquencies, and other demographic and behavioral variables of the borrowers. The wholesale portfolio is segmented into various risk grades on the basis of a host of quantitative and qualitative factors including financial performance, industry risk, business risk and management quality. The allowance for loan-related losses and allowance for lending-related commitments represents expected credit losses over the remaining expected life of outstanding loans and lending-related commitments that are not unconditionally cancellable. The Bank does not record an allowance for future draws on unconditionally cancellable lending-related commitments (e.g., credit cards). The Bank does not record an allowance on accrued interest receivables on the balance sheet due to its policy to reverse interest income on loans more than 90 days past due and in the case of agricultural loans more than 365 The estimate of expected credit losses includes expected recoveries of amounts previously charged off or expected to be charged off, even if such recoveries result in a negative allowance. The Retail loans are charged off against allowances typically when the account becomes 150 to 1,083 days past due depending on the type of loan. The defined delinquency levels at which major loan types are charged off are 150 days past due for personal loans and credit card receivables, 180 days for auto loans, commercial vehicle and construction equipment finance, 720 days past due for housing loans and on a customer by customer basis in respect of retail business banking when management believes that any future cash flows from these loans are remote including realization of collateral, if applicable, and where any restructuring or any other settlement arrangements were not feasible. The Wholesale loans are charged off against the allowance when management believes that the loan balance may not be recovered, including realization of collateral, if applicable, and where any restructuring or any other settlement arrangements were not feasible. Subsequent recoveries, if any, against write-off cases, are adjusted to provision for credit losses in the consolidated statement of income. Wholesale loans are considered non-performing when, based on current information and events, it is probable that the Bank will be unable to collect scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by management in determining non-performance include payment status, the financial condition of the borrower, the value of collateral held, and the probability of collecting scheduled principal and interest payments when due. Wholesale loans that experienced insignificant payment delays and payment shortfalls are generally not classified as non-performing but are placed on a surveillance watch list and closely monitored for deterioration. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record, market information, and the amount of the shortfall in relation to the principal and interest owed. These factors are considered by the Bank for selection of loans for credit reviews and assessment of allowance. In order to estimate the allowance, the Bank primarily relies on its risk-segmentation models, which are also an integral part of the Bank’s risk management framework. Risk segmentation aims to group homogenous exposures together to allow for collective assessment of expected losses. Expected Loss estimation under collective assessment, is primarily based on Probability of Default (“PD”), Loss given Default (“LGD”) and Exposure at Default (“EAD”) estimates. The Bank has modeled its PD estimates at the aforementioned granularity for its retail and wholesale portfolios and has also created the remaining expected life structure of the same for computation of credit losses. The Bank’s off-balance sheet credit exposures include unfunded loan commitments, financial guarantees, including standby letters of credit, and other similar instruments. For off-balance sheet credit exposures, the Bank recognizes an allowance for credit loss (“ACL”) associated with the unfunded amounts. The Bank does not recognize an ACL for commitments that are unconditionally cancellable at the Bank’s discretion. ACL for off-balance sheet credit exposures are reported as a liability in accrued expenses and other liabilities on the consolidated balance sheet. ACL in such cases is measured for the remaining contractual term, adjusted for prepayments, of the financial asset (including off-balance sheet credit exposures) using historical experience, current conditions, and reasonable and supportable forecasts. Collective and individual assessments Management estimates the allowance balance using relevant available information, from internal and external sources, relating to historical experience, current conditions, and reasonable and supportable forecasts. Historical loan default and loss experience provides the basis for the estimation of expected credit losses. Adjustments to historical loss information incorporate management’s view of current conditions and forecasts. The methodology for estimating the amount of credit losses reported in the allowance for credit losses has two basic components: first, a pooled component for expected credit losses for pools of loans that share similar risk characteristics and second an asset-specific component involving loans that do not share risk characteristics and the measurement of expected credit losses for such individual loans. As an integral part of the credit process, the Bank has a rating model appropriate to its retail and wholesale credit segments. The Bank monitors credit quality within its segments based on primary credit quality indicators. This internal rating (model scale) is updated at least annually. The majority of the Bank’s credit exposures share risk characteristics with other similar exposures, and as a result are collectively assessed for allowance (“portfolio-based component”). If an exposure does not share risk characteristics with other exposures, the Bank generally estimates expected credit losses on an individual basis, considering expected repayment and conditions impacting that individual exposure (“asset-specific component”). The asset-specific component covers loans modified or reasonably expected to be modified in a troubled debt restructuring (“TDR”), collateral-dependent loans, and borrowers with financial difficulties. Portfolio-based component (Pooled Loans) The portfolio-based component begins with a quantitative calculation that considers the likelihood of the borrower changing delinquency status or moving from one risk rating to another. The quantitative calculation covers expected credit losses over an instrument’s expected life and is estimated by applying credit loss factors to the Bank’s exposure at default. Apart from its historical experience, the Bank seeks to incorporate any reasonable and supportable information regarding the prevalent and future economic and operating conditions, and their impact on credit losses for the Bank into its allowance. The Bank therefore includes in its estimation the use of quantitative statistical models to predict the impact of macro-economic variables, on defaults. The Bank relies on a single macro-economic variable that is relevant to the specific pool of loans to develop a reasonable and supportable forecast specific to the relevant macro-economic variable for the expected performance of the pool. In deploying these models the Bank has assessed the impact of an exhaustive set of macro-economic variables (such key variables being GDP, Private Final Consumption Expenditure, Gross Fixed Capital Formation and Index of Industrial Production (“IIP”)) on its expected losses, and uses macro-economic forecasts surveyed and published by the Reserve Bank of India: Centre for Monitoring Indian Economy for this assessment. As the macro-economic forecasts are published for a year the Bank reverts to the historical average default rate beyond this period over a straight-line basis. Any adjustments needed to the modeled expected losses in the quantitative calculations are addressed through a qualitative adjustment. Qualitative adjustment, among other things includes specific portfolio characteristics; expected sectoral performance, expected impact of internal strategies or external events on the product/segment; model limitations; idiosyncratic events; and other relevant criteria. The total ACL is comprised of the quantitative and qualitative components. The Bank estimates its allowance for credit losses for pooled loans based on its PD and LGD, determined for the respective risk pools. The allowance for credit losses for the quantitative component of pooled loans is the product of multiplying the PD, LGD and EAD. Asset-specific component To determine the asset-specific component of the allowance, collateral-dependent loans (including those loans for which foreclosure is probable) and larger and non-accrual risk-rated loans in the wholesale portfolio segment are generally evaluated individually, while smaller loans (both scored and risk-rated) are aggregated for evaluation based on factors relevant for the respective class of assets. Loans are identified for individual assessment based on financial difficulty which includes nonperforming loans, labeled loans and loans identified based on management judgment. The Bank generally measures the asset-specific allowance as the difference between the amortized cost of the loan and the present value of the cash flows expected to be collected, discounted at the loan’s original effective interest rate. Subsequent changes in impairment, including those related to the passage of time, are generally recognized as an adjustment to the allowance for credit losses. For collateral-dependent loans, the fair value of collateral less estimated costs to sell is used to determine the charge-off amount for declines in value (to reduce the amortized cost of the loan to the fair value of collateral) or the amount of the negative allowance that should be recognized (for recoveries of prior charge-offs associated with improvements in the fair value of collateral). The asset-specific component of the allowance for credit losses that have been or are expected to be modified in TDRs incorporates the effect of the modification on the loan’s expected cash flows (including forgone interest, principal forgiveness, and other concessions), and also the potential for redefault. For wholesale loans modified or expected to be modified in TDRs, expected losses incorporate management’s expectation of the borrower’s ability to repay under the modified terms. Estimating the timing and amounts of future cash flows is highly subject to judgment as these cash flow projections rely upon estimates such as loss severities, asset valuations, default rates (including redefault rates on modified loans), the amounts and timing of interest or principal payments (including any expected prepayments) or other factors that are reflective of current and expected market conditions. All of these estimates and assumptions require significant management judgment and certain assumptions are highly subjective.
Sales/transfer of receivables	j. Sales/transfer of receivables The Bank enters into assignment transactions, which are similar to asset-backed securitization transactions through the special purpose entities (“SPEs”) route, except that such portfolios of receivables are assigned directly to the purchaser and are not represented by pass-through certificates. The Bank also sells finance receivables to SPEs, formerly qualifying special purpose entities (“QSPEs”) in securitization transactions. Recourse is in the form of the Bank’s investment in subordinated securities issued by these SPEs, cash collateral and other credit and liquidity enhancements. The receivables are derecognized in the balance sheet when they are sold and consideration has been received by the Bank. Sales and transfers that do not meet the criteria for surrender of control are accounted for as secured borrowings. The Bank first makes a determination as to whether the securitization entity would be consolidated. Second, it determines whether the transfer of financial assets is considered a sale. Furthermore, former qualifying special purpose entities (QSPEs) are now considered VIEs and are no longer exempt from consolidation. The Bank consolidates VIEs when it has both: (1) power to direct activities of the VIE that most significantly impact the entity’s economic performance and (2) an obligation to absorb losses or right to receive benefits from the entity that could potentially be significant to the VIE. The scope conditions examined include whether the entities’ equity investment at risk is insufficient to finance the activities without subordinated financial support and whether the holders of equity lack the characteristics of a financial interest. A controlling financial interest includes characteristics such as ability to make decisions through voting or similar rights, unlimited obligation to absorb the entities expected losses, and unlimited rights to receive the entities expected residual returns. Gains or losses from the sale of receivables are recognized in the income statement in the period the sale occurs based on the relative fair value of the portion sold and the portion allocated to retained interests, and are reported net of the estimated cost of servicing by the Bank. Fair values are determined based on the present value of expected future cash flows, using best estimates for key assumptions, such as prepayment and discount rates, commensurate with the risk involved.
Property and equipment	k. Property and equipment Property and equipment are stated at cost, less accumulated depreciation. Depreciation is provided over the estimated useful lives of property and equipment on a straight-line basis at the following rates: Type of Asset Rate of depreciation Premises 1.67% Software and systems 20.00% Equipment and furniture 10.00%-33.33% For assets purchased and sold during the year, depreciation is provided on a pro rata basis by the Bank and capital advances are included in other assets. Improvements to leasehold premises are charged off over the remaining primary period of the lease.
Lease accounting	l. Lease accounting The Bank recognizes its lease liabilities measured as the present value of lease payments not yet paid, discounted using the incremental borrowing rate. The right-of-use asset includes an initial measurement of the lease liabilities adjusted for accrued lease liabilities. At the inception of the contract, the Bank assesses whether the contract is, or contains, a lease. The Bank’s assessment is based on whether (1) the contract involves the use of distinct identified assets, (2) the Bank has the right to substantially all the economic benefit from the use of the asset throughout the term of the contract, and (3) the Bank has the right to direct the use of the asset. Leases are examined for classification as either finance leases or operating leases. A lease is classified as a finance lease if any one of the following criteria is met (1) the lease transfers ownership of the asset by the end of the lease term, (2) the lease contains an option to purchase the asset that is reasonably certain to be exercised, (3) the lease term is for the major part of the remaining useful life of the asset or (4) the present value of the lease payments equals or exceeds substantially all of the fair value of the asset. A lease is classified as an operating lease if it does not meet the above criteria. The Banks’s lessee arrangements consist of operating leases. The Bank records right-of-use assets and lease liabilities at the lease commencement date. Right-of-use assets are reported in other assets on the Consolidated Balance Sheets, and the related lease liabilities are reported in accrued expenses and other liabilities. The Bank has elected not to record right-of-use assets for short-term leases that have a lease term of 12 months or less and thus, all leases with a lease term exceeding 12 months are recorded on the consolidated balance sheet. Lease expense is recognized on a straight-line basis over the lease term and is recorded in non-interest expense-premises and equipment in the consolidated statements of income. The Bank made an accounting policy decision not to separate lease and non-lease components of a contract that is or contains a lease. At the lease commencement, lease liabilities are recognized based on the present value of the remaining lease payments and discounted using the incremental borrowing rate as of The Bank assesses leased assets for impairment, and if the carrying amount of the leased asset exceeds the undiscounted cash flows from the lease payments and the estimated residual value upon disposition of the leased asset, an impairment loss is recognized.
Impairment or disposal of tangible long-lived assets	m. Impairment or disposal of tangible long-lived assets Whenever events or circumstances indicate that the carrying amount of tangible long-lived assets may not be recoverable, the Bank subjects such long-lived assets to a test of recoverability based on the undiscounted cash flows from use or disposition of the asset. Such events or circumstances would include changes in the market, technology obsolescence, adverse changes in profitability or regulation. If the asset is impaired, the Bank recognizes an impairment loss estimated as the difference between the carrying value and the net realizable value.
Income tax	n. Income tax Income tax expense/benefit consists of the current tax expense and the net change in deferred tax assets or liabilities during the year. Deferred tax assets and liabilities are recognized for the future tax consequences of differences between the carrying values of assets and liabilities for financial reporting purposes and their respective tax bases, and for operating loss and tax credit carry forwards. Deferred tax assets are reduced by a valuation allowance to the amount that is more likely than not to be realized based on management’s judgment. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which the deferred tax assets or liabilities are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in the income statement in the period of enactment of the change. Income tax benefits are recognized and measured based upon a two-step model: 1) a tax position must be more-likely-than-not to be sustained based on its technical merits in order to be recognized, and 2) the benefit is measured as the largest amount of that position that is greater than 50 percent likely of being realized upon settlement. The difference between the benefit recognized for a position in accordance with this model and the tax benefit claimed on a tax return is referred to as an unrecognized tax benefit. The Bank’s policy is to include interest income, interest expense and penalties on overpayments and underpayment of income taxes within income tax expense in the consolidated statement of income. Interest income on overpayments of income taxes is recognized when the related matter is resolved. The Bank follows specific identification method for releasing income tax effects from AOCI.
Revenue recognition	o. Revenue recognition Interest income from loans and from investments is recognized on an accrual basis using the effective interest method when earned except in respect of loans or investments placed on non-accrual status, where it is recognized when received. Fees and commissions from guarantees issued are amortized over the contractual period of the commitment. Dividends from investments are recognized when declared. Realized gains and losses on sale of securities are recorded on the trade date and are determined using the weighted average cost method. Other fees and income are recognized when earned, which is when the service that results in the income has been provided. The Bank amortizes annual fees on credit cards over the contractual period of the fees.
Foreign currency transactions	p. Foreign currency transactions The Bank’s functional currency is the Indian Rupee, except for the Bank’s foreign branches. Foreign currency transactions are recorded at the exchange rate prevailing on the date of the transaction. Foreign currency denominated monetary assets and liabilities are converted into respective functional currency using exchange rates prevailing on the balance sheet dates. Gains and losses arising on conversion of foreign currency denominated monetary assets and liabilities and on foreign currency transactions are included in the determination of net income under foreign exchange transactions. For the foreign branches, the assets, liabilities and operations are translated, for consolidation purposes, from functional currency of the foreign branch to the Indian Rupee reporting currency at period-end rates for assets and liabilities and at average rates for operations. The resulting unrealized gains or losses are reported as a component of AOCI.
Stock-based compensation	q. Stock-based compensation The fair value of stock-based compensation is estimated on the date of each grant based on a binomial model. For further information, see note 21.
Debt issuance costs	r. Debt issuance costs Issuance costs of long-term debt are amortized over the tenure of the debt.
Earnings per share	s. Earnings per share Basic earnings per equity share have been computed by dividing net income by the weighted average number of equity shares outstanding for the period. Diluted earnings per equity share has been computed using the weighted average number of equity shares and dilutive potential equity shares outstanding during the period, using the treasury stock method, except where the result would be anti-dilutive. The Bank also reports basic and diluted earnings per ADS, where each ADS represents three equity shares. Earnings per ADS have been computed as earnings per equity share multiplied by the number of equity shares per ADS. A reconciliation of the number of shares used in computing earnings per share has been provided in note 28.
Segment information	t. Segment information The Bank operates in three reportable segments, namely retail banking, wholesale banking and treasury services. Segment-wise information has been provided in note 25.
Derivative financial instruments	u. Derivative financial instruments The Bank recognizes all derivative instruments, including certain derivative instruments embedded in other contracts, as assets or liabilities in the balance sheet and measures them at fair value. The Bank has not designated any derivatives as hedges. As such, all changes in fair value of derivative instruments are recognized in net income under derivative gain/(loss) in the period of change. The Bank enters into forward exchange contracts, currency swaps and currency options with its customers and typically transfers such customer exposures in the inter-bank foreign exchange markets. The Bank also enters into such instruments to cover its own foreign exchange exposures. All such instruments are carried at fair value, determined based on market quotations or market-based inputs. The Bank enters into interest rate swaps for its own account. The Bank also enters into interest rate currency swaps and cross currency interest rate swaps with its customers and typically offsets these risks in the inter-bank market. Such contracts are carried on the balance sheet at fair value, or priced using market determined yield curves.
Business combination	v. Business combination The Bank accounts for acquired businesses using the purchase method of accounting which requires that the assets acquired and liabilities assumed be recorded at the date of acquisition at their respective fair value. The application of the purchase method requires certain estimates and assumptions, especially concerning the determination of the fair value of the acquired intangible and tangible assets, as well as the liabilities assumed at the date of the acquisition. The judgments made in the context of the purchase price allocation can materially impact the Bank’s future results of operations. The valuations are based on information available at the acquisition date. Purchase consideration in excess of the Bank’s interest and the acquiree’s net fair value of identifiable assets and liabilities is recognized as goodwill.
Goodwill	w. Goodwill Under applicable accounting guidance, goodwill is reviewed at the reporting unit level for potential impairment at least on an annual basis at the end of the reporting period, or more frequently if events or circumstances indicate a potential impairment. On April 1, 2020, the Bank adopted ASU 2017-04 which eliminated the requirement to calculate the implied fair value of goodwill (the second step). Accordingly, if the fair value of goodwill exceeds the goodwill assigned to the reporting unit, there is no impairment. If the goodwill assigned to a reporting unit exceeds the fair value of goodwill, an impairment charge is recorded for the excess. An impairment loss recognized cannot exceed the amount of goodwill assigned to a reporting unit, and the loss establishes a new basis for the goodwill. Subsequent reversal of goodwill impairment losses is not permitted.
Recently adopted accounting standards	x. Recently adopted accounting standards Nil
Recently issued accounting pronouncements not yet effective	y. Recently issued accounting pronouncements not yet effective In March 2022, the FASB issued ASU No. 2022-01 “Fair Value Hedging—Portfolio Layer Method (Topic 815)”. This ASU expands the portfolio layer method of hedge accounting prescribed in ASU 2017-12 to allow multiple hedged layers of a single closed portfolio and to include portfolios of both prepayable and non-prepayable financial assets. This scope expansion is consistent with the FASB’s efforts to simplify hedge accounting and allows entities to apply the same accounting method to similar hedging strategies. This ASU also specifies eligible hedging instruments in a single-layer hedge, provides additional guidance on accounting and disclosure of hedge basis adjustments and specifies how hedge basis adjustments should be considered in determining credit losses for assets in the designated closed portfolio. This ASU is effective for public business entities for interim and annual periods in fiscal years beginning after December 15, 2022. The Bank is in the process of evaluating the impact of adoption of this ASU on its consolidated financial position, results of operations, and cash flows. In March 2022, the FASB issued ASU 2022-02 “Financial Instruments—Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures”, which eliminates the accounting guidance for TDRs by creditors in Subtopic 310-40 “Receivables—Troubled Debt Restructurings by Creditors”. This ASU enhances disclosure requirements for certain loan refinancings and restructurings by creditors when a borrower is experiencing financial difficulty, updates certain requirements related to accounting for credit losses under ASC 326 and requires disclosure of current-period gross write offs of financing receivables by year of origination. The ASU is effective for the Bank for interim and annual periods in fiscal years beginning after December 15, 2022. The Bank is in the process of evaluating the impact of adoption of this ASU on its consolidated financial position, results of operations, and cash flows.
Convenience translation	z. Convenience translation The accompanying financial statements have been expressed in Indian Rupees (“Rs.”), the Bank’s functional currency. For the convenience of the reader, the financial statements as of and for the fiscal year ended March 31, 2023 have been translated into U.S. dollars at US$ 1.00

Summary of significant accoun_3

Summary of significant accounting policies (Tables)	12 Months Ended
	Mar. 31, 2023
Schedule of Composite depreciation rate	Property and equipment are stated at cost, less accumulated depreciation. Depreciation is provided over the estimated useful lives of property and equipment on a straight-line basis at the following rates: Type of Asset Rate of depreciation Premises 1.67% Software and systems 20.00% Equipment and furniture 10.00%-33.33%

Investments (Tables)

Investments (Tables)	12 Months Ended
	Mar. 31, 2023
Summary of Allowances for Available for sale debt securities	Allowances for AFS debt securities as of March 31, 2022 are as follows: As of March 31, 2022 Allowance for credit losses, beginning of the period Write-offs Addition / ( Deletion allowance for credit losses Allowance for credit losses, end of the period (In millions) Credit substitutes Rs. 2,915.1 Rs. — Rs. (2,915.1 ) Rs. — Other corporate/financial institution bonds — — — — Total Rs. 2,915.1 Rs. — Rs. (2,915.1 ) Rs. — Allowances for AFS debt s As of March 31, 2023 Allowance for the period Write-offs Addition/(Deletion) to allowance for credit losses Allowance for period (In millions) Credit substitutes Rs. — Rs. — Rs. 70.9 Rs. 70.9 Other corporate/financial institution bonds — — — — Total Rs. — Rs. — Rs. 70.9 Rs. 70.9 Total US$ — US$ — US$ 0.9 US$ 0.9
Credit Substitutes
Available for Sale Securities Amortized Cost and Fair Value	The fair value of credit substitutes by type of instrument as of March 31, 2022 and March 31, 2023 were as follows: As of March 31, 2022 2023 Amortized Cost Fair Value Amortized Cost Fair Value (In millions) Available for sale credit substitute debt securities: Debentures Rs. 577,377.0 Rs.581,551.5 Rs. 510,880.4 Rs. 503,187.6 Preference shares 77.1 0.5 281.0 0.2 Commercial paper 1,468.2 1,468.2 — — Total Rs. 578,922.3 Rs.583,020.2 Rs. 511,161.4 Rs. 503,187.8 US$ 6,219.3 US$ 6,122.3
Held for Trading
Portfolio of Trading Securities or Held for Trading Securities Amortized Cost Fair Value	The portfolio of trading securities as of March 31, 2022 and March 31, 2023 was as follows: As of March 31, 2022 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In millions) Government of India securities Rs. 28,159.7 Rs. 57.7 Rs. 21.9 Rs. 28,195.5 Other corporate/financial institution securities 3,635.4 1.9 6.0 3,631.3 Total debt securities Rs. 31,795.1 Rs. 59.6 Rs. 27.9 Rs. 31,826.8 Other securities (including mutual fund units) 21,933.5 128.2 689.0 21,372.7 Total Rs. 53,728.6 Rs. 187.8 Rs. 716.9 Rs. 53,199.5 As of March 31, 2023 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In millions) Government of India securities Rs. 106,952.3 Rs. 103.6 Rs. 23.2 Rs. 107,032.7 Other corporate/financial institution securities 20,361.5 19.0 2.5 20,378.0 Total debt securities Rs. 127,313.8 Rs. 122.6 Rs. 25.7 Rs. 127,410.7 Other securities (including mutual fund units) 8,166.4 254.0 — 8,420.4 Total Rs. 135,480.2 Rs. 376.6 Rs. 25.7 Rs. 135,831.1 Total US$ 1,648.4 US$ 4.5 US$ 0.3 US$ 1,652.6
Available-for-Sale Debt Securities
Available for Sale Securities Amortized Cost and Fair Value	The portfolio of AFS debt securities as of March 31, 2022 and March 31, 2023 was as follows: As of March 31, 2022 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In millions) Government of India securities Rs. 3,226,917.6 Rs. 10,995.6 Rs. 42,946.3 Rs. 3,194,966.9 State government securities 429,146.8 4,395.9 5,865.9 427,676.8 Government securities outside India 2,279.2 — 3.4 2,275.8 Credit substitutes (see note 7) 578,922.3 5,381.4 1,283.5 583,020.2 Other corporate/financial institution bonds 36,689.5 179.8 163.5 36,705.8 Debt securities, other than asset and mortgage-backed securities 4,273,955.4 20,952.7 50,262.6 4,244,645.5 Mortgage-backed securities 24.2 — 1.3 22.9 Asset-backed securities 142,954.6 1,519.6 579.5 143,894.7 Total Rs. 4,416,934.2 Rs. 22,472.3 Rs. 50,843.4 Rs. 4,388,563.1 Securities with gross unrealized losses Rs. 1,791,389.0 Securities with gross unrealized gains 2,597,174.1 Rs. 4,388,563.1 As of March 31, 2023 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (In millions) Government of India securities Rs. 3,860,431.8 Rs. 4,656.4 Rs. 80,344.5 Rs. 3,784,743.7 State government securities 428,980.9 1,322.5 15,604.8 414,698.6 Government securities outside India 819.0 — 21.8 797.2 Credit substitutes (see note 7) 511,161.4 505.4 8,479.0 503,187.8 Other corporate/financial institution bonds 27,521.4 13.4 571.3 26,963.5 Debt securities, other than asset and mortgage-backed securities 4,828,914.5 6,497.7 105,021.4 4,730,390.8 Mortgage-backed securities 19.3 — 1.8 17.5 Asset-backed securities 150,271.9 55.2 1,891.4 148,435.7 Total Rs. 4,979,205.7 Rs. 6,552.9 Rs. 106,914.6 Rs. 4,878,844.0 Total US$ 60,581.7 US$ 79.7 US$ 1,300.8 US$ 59,360.6 Securities with gross unrealized losses Rs. 3,220,573.8 Securities with gross unrealized gains 1,658,270.2 Rs. 4,878,844.0 US$ 59,360.6
Unrealized loss position investments	The below table presents the gross unrealized losses and the associated fair value of AFS debt securities and whether these securities have had gross unrealized losses for less than 12 months or 12 months or greater as of March 31, 2022: As of March 31, 2022 Less Than 12 Months 12 Months or Greater Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (In millions) Government of India securities Rs. 447,360.3 Rs. 7,893.5 Rs. 838,788.4 Rs. 35,052.8 Rs. 1,286,148.7 Rs. 42,946.3 State government securities 146,365.0 1,213.6 131,616.3 4,652.3 277,981.3 5,865.9 Government securities outside India 2,275.7 3.4 — — 2,275.7 3.4 Credit substitutes (see note 7) 118,798.2 972.4 37,138.9 311.1 155,937.1 1,283.5 Other corporate/financial institution bonds 15,823.3 163.5 — — 15,823.3 163.5 Debt securities, other than asset- and mortgage-backed securities 730,622.5 10,246.4 1,007,543.6 40,016.2 1,738,166.1 50,262.6 Mortgage-backed securities 23.0 1.3 — — 23.0 1.3 Asset-backed securities 25,557.2 310.6 27,642.7 268.9 53,199.9 579.5 Other securities (including mutual fund units) — — — — — — Total Rs. 756,202.7 Rs. 10,558.3 Rs. 1,035,186.3 Rs. 40,285.1 Rs. 1,791,389.0 Rs. 50,843.4 The below table presents the gross unrealized losses and the associated fair value of AFS debt securities and whether these securities have had gross unrealized losses for less than 12 months or 12 months or greater as of March 31, 2023: As of March 31, 2023 Less Than 12 Months 12 Months or Greater Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses (In millions) Government of India securities Rs. 1,038,004.8 Rs. 12,622.5 Rs. 1,266,775.4 Rs. 67,722.0 Rs. 2,304,780.2 Rs. 80,344.5 State government securities 75,707.7 1,923.6 270,099.2 13,681.2 345,806.9 15,604.8 Government securities outside India 797.2 21.8 — — 797.2 21.8 Credit substitutes (see note 7) 254,023.6 3,771.0 152,702.6 4,708.0 406,726.2 8,479.0 Other corporate/financial institution bonds 21,596.9 443.0 4,205.1 128.3 25,802.0 571.3 Debt securities, other than asset- and mortgage-backed securities 1,390,130.2 18,781.9 1,693,782.3 86,239.5 3,083,912.5 105,021.4 Mortgage-backed securities — — 17.5 1.8 17.5 1.8 Asset-backed securities 110,545.7 1,077.3 26,098.1 814.1 136,643.8 1,891.4 Other securities (including mutual fund units) — — — — — — Total Rs. 1,500,675.9 Rs. 19,859.2 Rs. 1,719,897.9 Rs. 87,055.4 Rs. 3,220,573.8 Rs. 106,914.6 Total US$ 18,258.6 US$ 241.6 US$ 20,925.9 US$ 1,059.2 US$ 39,184.5 US$ 1,300.8
Debt securities, other than asset and mortgage-backed securities | Available-for-Sale Debt Securities
Investments Classified by Contractual Maturity Date	The contractual residual maturity of AFS debt securities other than asset and mortgage-backed securities as of March 31, 2023 is set out below: As of March 31, 2023 Amortized Cost Fair Value Fair Value (In millions) Within one year Rs. 1,092,231.4 Rs. 1,088,924.4 US$ 13,248.8 Over one year through five years 1,398,521.5 1,373,721.5 16,714.0 Over five years through ten years 1,590,115.9 1,545,947.0 18,809.4 Over ten years 748,045.7 721,797.9 8,782.1 Total Rs. 4,828,914.5 Rs. 4,730,390.8 US$ 57,554.3
Asset and Mortgage Backed Securities | Available-for-Sale Debt Securities
Investments Classified by Contractual Maturity Date	The contractual residual maturity of AFS mortgage-backed and asset-backed debt securities as of March 31, 2023 is set out below: As of March 31, 2023 Amortized Cost Fair Value Fair Value (In millions) Within one year Rs. 67,028.7 Rs. 66,150.7 US$ 804.9 Over one year through five years 82,694.3 81,730.2 994.4 Over five years through ten years 471.2 474.5 5.8 Over ten years 97.0 97.8 1.2 Total Rs. 150,291.2 Rs. 148,453.2 US$ 1,806.3
Realized Investment Gains Losses Net	Gross realized gains and gross realized losses from sale of AFS debt securities and dividends and interest on such securities are set out below: Fiscal year ended March 31, 2021 2022 2023 2023 (In millions) Gross realized gains on sale Rs. 56,439.4 Rs. 18,604.5 Rs. 259.1 US$ 3.2 Gross realized losses on sale (514.2 ) (1,858.7 ) (979.4 ) (12.0 ) Realized gains/ (losses), net 55,925.2 16,745.8 (720.3 ) (8.8 ) Dividends and interest 226,690.9 240,943.0 304,566.7 3,705.6 Total Rs. 282,616.1 Rs. 257,688.8 Rs. 303,846.4 US$ 3,696.8

Credit substitutes (Tables)

Credit substitutes (Tables)	12 Months Ended
	Mar. 31, 2023
Credit substitutes by bank's internal credit quality indicators	The fair value of credit substitutes by the Bank’s internal credit quality indicators and amounts provided for non-performing credit substitutes is as follows: As of March 31, 2022 2023 2023 (In millions) Pass Rs. 583,020.2 Rs. 503,187.8 US$ 6,122.3 Non-performing—gross balance — — — Less: Non-performing losses — — — Non-performing credit substitutes, net — — — Total credit substitutes, net Rs. 583,020.2 Rs. 503,187.8 US$ 6,122.3
Impaired credit substitutes	The following table provides information on non-performing credit substitutes as o As of March 31, 2022 2023 2023 (In millions) Gross non-performing credit substitutes Rs — Rs — US$ — Gross non-performing credit substitutes by industry Rs. — Rs. — US$ — Average non-performing credit substitutes Rs. — Rs. — US$ — Interest income recognized on non-performing credit substitutes Rs. — Rs. — US$ —

Loans (Tables)

Loans (Tables)	12 Months Ended
	Mar. 31, 2023
Loans by Facility	Loans by facility as of March 31, 2022 and March 31, 2023 were as follows: As of March 31, 2022 2023 2023 (In millions) Retail loans: Auto loans Rs. 1,042,793.0 Rs. 1,221,097.6 US$ 14,857.0 Personal loans/Credit cards 2,341,971.8 2,782,828.5 33,858.5 Retail business banking 2,617,087.1 3,378,625.2 41,107.5 Commercial vehicle and construction equipment finance 951,066.0 1,285,887.8 15,645.3 Housing loans 830,882.4 1,020,901.6 12,421.2 Other retail loans 1,526,734.4 1,817,239.6 22,110.2 Subtotal Rs. 9,310,534.7 Rs. 11,506,580.3 US$ 139,999.7 Wholesale loans Rs. 5,099,009.3 Rs. 5,911,512.1 US$ 71,925.0 Gross loans 14,409,544.0 17,418,092.4 211,924.7 Less: Allowance for credit losses 372,671.8 365,164.5 4,443.0 Total Rs. 14,036,872.2 Rs. 17,052,927.9 US$ 207,481.7
Financing Receivable, by Maturity	The maturity of gross loans as of March 31, 2023 is set out below: As of March 31, 2023 Wholesale loans Retail loans Total (In millions) Maturity profile of loans: Within one year Rs. 1,790,721.1 Rs. 2,863,235.5 Rs. 4,653,956.6 Over one year through five years 2,966,781.3 7,396,855.6 10,363,636.9 Over five years 1,154,009.7 1,246,489.2 2,400,498.9 Total Rs. 5,911,512.1 Rs. 11,506,580.3 Rs. 17,418,092.4 Total US$ 71,925.0 US$ 139,999.7 US$ 211,924.7
Past Due Financing Receivables	The following table provides details of age analysis of loans and finance receivable on non-accrual status as of March 31, 2022 and March 31, 2023. As of March 31, 2022 31-90 days Non-accrual/ Current (1), Total Finance on non-accrual (In millions) Retail Loans Auto loans Rs. 6,536.5 Rs. 20,441.6 Rs. 1,015,814.9 Rs. 1,042,793.0 Rs. 20,441.6 Personal loans/Credit card 27,433.8 28,057.5 2,286,480.5 2,341,971.8 28,057.5 Retail business banking 18,242.9 35,820.2 2,563,024.0 2,617,087.1 35,820.2 Commercial vehicle and construction equipment finance 20,263.0 25,091.5 905,711.5 951,066.0 25,091.5 Housing loans 3,296.3 6,478.4 821,107.7 830,882.4 6,478.4 Other retail 18,009.8 49,459.2 1,459,265.4 1,526,734.4 49,459.2 Wholesale loans 8,455.4 31,921.1 5,058,632.8 5,099,009.3 31,921.1 Total Rs. 102,237.7 Rs. 197,269.5 Rs. 14,110,036.8 Rs. 14,409,544.0 Rs. 197,269.5 (1) Loans up to 30 days past due are considered current. (2) Includes crop-related agricultural loans with days past due less than 366 as they are not considered as non-performing of Rs. 34.2 billion. As of March 31, 2023 31-90 days Non-accrual/ Current (1),(2) Total Finance on non-accrual (In millions) Retail Loans Auto loans Rs. 5,738.3 Rs. 15,941.6 Rs. 1,199,417.7 Rs. 1,221,097.6 Rs. 15,941.6 Personal loans/Credit card 20,871.1 22,770.1 2,739,187.3 2,782,828.5 22,770.1 Retail business banking 21,241.0 43,937.8 3,313,446.4 3,378,625.2 43,937.8 Commercial vehicle and construction equipment finance 15,089.3 21,823.8 1,248,974.7 1,285,887.8 21,823.8 Housing loans 3,916.0 5,900.3 1,011,085.3 1,020,901.6 5,900.3 Other retail 30,007.7 56,822.9 1,730,409.0 1,817,239.6 56,822.9 Wholesale loans 3,905.0 33,512.3 5,874,094.8 5,911,512.1 33,512.3 Total Rs. 100,768.4 Rs. 200,708.8 Rs. 17,116,615.2 Rs. 17,418,092.4 Rs. 200,708.8 Total US$ 1,226.0 US$ 2,442.0 US$ 208,256.7 US$ 211,924.7 US$ 2,442.0 ( ) Loans up to 30 days past due are considered current. ( ) Includes crop-related agricultural loans with days past due less than 366 as they are not considered as non-performing of Rs. 31.8 billion.
Non-performing Financing Receivables	The following table provides information on non-performing credit substitutes as o As of March 31, 2022 2023 2023 (In millions) Gross non-performing credit substitutes Rs — Rs — US$ — Gross non-performing credit substitutes by industry Rs. — Rs. — US$ — Average non-performing credit substitutes Rs. — Rs. — US$ — Interest income recognized on non-performing credit substitutes Rs. — Rs. — US$ —
Allowance for Credit Losses on Financing Receivables	Allowances for credit losses as of March 31, 2021 are as follows: Auto loans Personal Retail Commercial Housing Other Wholesale Total (In millions) Allowance for credit losses, beginning of the period Rs. 19,219.0 Rs. 47,097.1 Rs. 32,860.3 Rs. 20,463.4 Rs. 1,700.7 Rs. 37,864.3 Rs. 39,628.4 Rs. 198,833.2 Impact of adopting ASC 326 9,880.9 38,091.1 3,947.5 325.5 1,659.5 234.3 26,874.2 81,013.0 Write-offs (13,263.5 ) (61,571.8 ) (14,951.6 ) (15,921.5 ) (190.8 ) (9,942.8 ) (3,628.7 ) (119,470.7 ) Net allowance for credit losses ( ) 23,559.7 86,464.6 20,432.2 21,489.3 1,408.6 21,073.4 8,725.4 183,153.2 Allowance for credit losses, end of the period Rs. 39,396.1 Rs. 110,081.0 Rs. 42,288.4 Rs. 26,356.7 Rs. 4,578.0 Rs. 49,229.2 Rs. 71,599.3 Rs. 343,528.7 Allowance for credit losses: Individually evaluated a Rs. 34.7 Rs. 4.0 Rs. 3,540.7 Rs. 59.6 Rs. — Rs. 72.1 Rs. 33,222.5 Rs. 36,933.6 Collectively evaluated a 39,361.4 110,077.0 38,747.7 26,297.1 4,578.0 49,157.1 38,376.8 306,595.1 Loans: Individually evaluated l 49.5 4.2 3,560.8 59.7 — 92.7 42,786.8 46,553.7 Collectively evaluated l 964,003.7 2,042,723.0 2,004,285.1 805,270.1 702,235.5 1,306,548.3 4,172,098.5 11,997,164.2 ( ) Net allowances for credit losses charged to expense does not include the recoveries against write-off cases amounting to Rs. 28,919.8 28,605.8 314.0 Allowances for credit losses as of March 31, 2022 are as follows: Auto loans Personal Retail Commercial Housing Other Wholesale Total (In millions) Allowance for credit losses, beginning of the period Rs. 39,396.1 Rs. 110,081.0 Rs. 42,288.4 Rs. 26,356.7 Rs. 4,578.0 Rs. 49,229.2 Rs. 71,599.3 Rs. 343,528.7 Write-offs (19,376.9 ) (74,500.8 ) (3,027.7 ) (16,592.0 ) (601.6 ) (17,567.4 ) (2,351.4 ) (134,017.8 ) Net allowance for credit losses ( ) 21,750.2 75,986.2 9,794.3 21,986.2 (1,284.2 ) 29,775.2 5,153.0 163,160.9 Allowance for credit losses, end of the Rs. 41,769.4 Rs. 111,566.4 Rs. 49,055.0 Rs. 31,750.9 Rs. 2,692.2 Rs. 61,437.0 Rs. 74,400.9 Rs. 372,671.8 Allowance for credit losses: Individually evaluated allowance Rs. 18.4 Rs. 6.5 Rs. 2,651.4 Rs. 65.8 Rs. — Rs. 92.3 Rs. 35,619.7 Rs. 38,454.1 Collectively evaluated a 41,751.0 111,559.9 46,403.6 31,685.1 2,692.2 61,344.7 38,781.2 334,217.7 Loans: Individually evaluated l 31.5 29.4 2,651.4 66.3 — 126.6 41,832.9 44,738.1 Collectively evaluated l 1,042,761.5 2,341,942.4 2,614,435.7 950,999.7 830,882.4 1,526,607.8 5,057,176.4 14,364,805.9 ( ) Net allowances for credit losses charged to expense does not include the recoveries against write-off cases amounting to Rs. 36,181.4 35,385.3 796.1 Allowances for credit losses as of March 31, 2023 are as follows: Auto loans Personal Retail Commercial c Housing Other Wholesale Total Total (In millions) Allowance for Rs. 41,769.4 Rs. 111,566.4 Rs. 49,055.0 Rs. 31,750.9 Rs. 2,692.2 Rs. 61,437.0 Rs. 74,400.9 Rs. 372,671.8 US$ 4,534.3 Write-offs (10,456.0 ) (88,744.9 ) (3,987.8 ) (15,270.1 ) (479.0 ) (15,769.9 ) (3,156.0 ) (137,863.7 ) (1,677.4 ) Net allowance for credit losses ( ) 2,522.1 76,812.9 18,907.6 14,649.8 1,056.7 26,345.3 (9,938.0 ) 130,356.4 1,586.1 Allowance for Rs. 33,835.5 Rs. 99,634.4 Rs. 63,974.8 Rs. 31,130.6 Rs. 3,269.9 Rs. 72,012.4 Rs. 61,306.9 Rs. 365,164.5 US$ 4,443.0 Allowance for Individually evaluated a Rs. 4.6 Rs. — Rs. 2,320.3 Rs. 15.0 Rs. — Rs. 92.1 Rs. 29,264.6 Rs. 31,696.6 US$ 385.7 Collectively evaluated a 33,830.9 99,634.4 61,654.5 31,115.6 3,269.9 71,920.3 32,042.3 333,467.9 4,057.3 Loans: — — Individually evaluated l 16.4 0.8 2,782.0 290.8 — 92.3 33,879.5 37,061.8 450.9 Collectively evaluated l 1,221,081.2 2,782,827.7 3,375,843.2 1,285,597.0 1,020,901.6 1,817,147.3 5,877,632.6 17,381,030.6 211,473.8 ( ) Net allowances for credit losses charged to expense does not include the recoveries against write-off cases amounting to Rs. 56,142.6 683.1 53,374.2 2,768.4
Troubled Debt Restructurings Modifications	Interest on loans by facility are as follows: Fiscal year ended March 31, 2021 2022 2023 2023 (In millions) Wholesale loans Rs. 263,190.7 Rs. 250,779.5 Rs. 363,842.1 US$ 4,426.8 Retail loans 753,857.1 807,146.1 987,975.9 12,020.7 Total Rs. 1,017,047.8 Rs. 1,057,925.6 Rs. 1,351,818.0 US$ 16,447.5
Retail Loans
Financing Receivable Credit Quality Indicators	The following table provides information on primary credit quality indicators as o Term loans by origination Credit quality indicators-Internally assigned grade Prior 2018 2019 2020 2021 2022 Revolving Revolving Total (In millions) Auto loans Performing Rs. 8,466.2 Rs. 42,634.8 Rs. 89,161.9 Rs. 169,606.1 Rs. 252,295.7 Rs. 455,114.6 Rs. 5,072.1 Rs. — Rs. 1,022,351.4 Non-performing 846.1 2,866.6 5,455.2 6,323.4 2,973.5 661.7 1,315.1 — 20,441.6 Subtotal Rs. 9,312.3 Rs. 45,501.4 Rs. 94,617.1 Rs. 175,929.5 Rs. 255,269.2 Rs. 455,776.3 Rs. 6,387.2 Rs. — Rs. 1,042,793.0 Personal loans/Credit card Performing Rs. 1,374.4 Rs. 14,320.8 Rs. 67,477.1 Rs. 225,561.4 Rs. 336,526.1 Rs. 947,277.0 Rs. 381,900.4 Rs. 339,477.1 Rs. 2,313,914.3 Non-performing 201.7 910.2 4,184.4 7,967.1 3,931.7 1,722.7 6,405.6 2,734.1 28,057.5 Subtotal Rs. 1,576.1 Rs. 15,231.0 Rs. 71,661.5 Rs. 233,528.5 Rs. 340,457.8 Rs. 948,999.7 Rs. 388,306.0 Rs. 342,211.2 Rs. 2,341,971.8 Retail business banking Performing Rs. 52,347.2 Rs. 78,959.8 Rs. 97,361.4 Rs. 151,964.0 Rs. 306,673.0 Rs. 569,687.0 Rs. 1,324,274.5 Rs. — Rs. 2,581,266.9 Non-performing 3,661.9 3,736.0 3,429.5 2,598.7 2,880.8 412.2 19,101.1 — 35,820.2 Subtotal Rs. 56,009.1 Rs. 82,695.8 Rs. 100,790.9 Rs. 154,562.7 Rs. 309,553.8 Rs. 570,099.2 Rs. 1,343,375.6 Rs. — Rs. 2,617,087.1 Commercial vehicle and construction equipment finance Performing Rs. 1,837.4 Rs. 16,022.5 Rs. 69,418.2 Rs. 125,223.1 Rs. 185,561.0 Rs. 426,434.1 Rs. 101,478.2 Rs. — Rs. 925,974.5 Non-performing 210.8 1,391.5 6,224.5 8,010.6 3,883.8 651.3 4,719.0 — 25,091.5 Subtotal Rs. 2,048.2 Rs. 17,414.0 Rs. 75,642.7 Rs. 133,233.7 Rs. 189,444.8 Rs. 427,085.4 Rs. 106,197.2 Rs. — Rs. 951,066.0 Housing loans Performing Rs. 301,103.3 Rs. 85,682.1 Rs. 127,339.2 Rs. 46,798.3 Rs. 0.6 Rs. 263,480.5 Rs. — Rs. — Rs. 824,404.0 Non-performing 1,597.6 504.1 1,472.2 2,193.9 512.8 197.8 — — 6,478.4 Subtotal Rs. 302,700.9 Rs. 86,186.2 Rs. 128,811.4 Rs. 48,992.2 Rs. 513.4 Rs. 263,678.3 Rs. — Rs. — Rs. 830,882.4 Other retail loans Performing Rs. 4,260.4 Rs. 11,266.3 Rs. 20,843.1 Rs. 51,074.6 Rs. 131,647.7 Rs. 567,032.4 Rs. 691,150.7 Rs. — Rs. 1,477,275.2 Non-performing 2,989.1 1,434.6 4,470.0 10,682.7 3,645.0 1,004.1 25,233.7 — 49,459.2 Subtotal Rs. 7,249.5 Rs 12,700.9 Rs. 25,313.1 Rs. 61,757.3 Rs. 135,292.7 Rs. 568,036.5 Rs. 716,384.4 Rs. — Rs. 1,526,734.4 Total Rs. 378,896.1 Rs. 259,729.3 Rs. 496,836.7 Rs. 808,003.9 Rs. 1,230,531.7 Rs. 3,233,675.4 Rs. 2,560,650.4 Rs. 342,211.2 Rs. 9,310,534.7 The following table provides information on primary credit quality indicators as of Term loans by origination Credit quality indicators- assigned grade Prior 2019 2020 2021 2022 2023 Revolving Revolving Total (In millions) Auto loans Performing Rs. 14,387.2 Rs. 37,425.2 Rs. 90,148.4 Rs. 160,443.6 Rs. 308,076.9 Rs. 525,693.8 Rs. 68,980.9 Rs. — Rs. 1,205,156.0 Non-performing 1,129.9 2,324.4 3,858.8 2,875.4 1,990.0 748.9 3,014.2 — 15,941.6 Subtotal Rs. 15,517.1 Rs. 39,749.6 Rs. 94,007.2 Rs. 163,319.0 Rs. 310,066.9 Rs. 526,442.7 Rs. 71,995.1 Rs. — Rs. 1,221,097.6 Personal loans/Credit card Performing Rs. 2,431.4 Rs. 20,673.2 Rs. 86,038.7 Rs. 155,911.2 Rs. 490,598.8 Rs. 1,206,873.5 Rs. 482,500.3 Rs. 315,031.3 Rs. 2,760,058.4 Non-performing 346.6 1,440.1 3,511.1 2,518.9 3,411.9 2,254.3 8,869.6 417.6 22,770.1 Subtotal Rs. 2,778.0 Rs. 22,113.3 Rs. 89,549.8 Rs. 158,430.1 Rs. 494,010.7 Rs. 1,209,127.8 Rs. 491,369.9 Rs. 315,448.9 Rs. 2,782,828.5 Retail business banking Performing Rs. 75,583.1 Rs. 58,914.7 Rs. 94,372.2 Rs. 185,698.6 Rs. 412,305.0 Rs. 600,147.3 Rs. 1,907,666.5 Rs. — Rs. 3,334,687.4 Non-performing 4,851.6 2,996.8 2,847.2 4,136.3 1,558.3 218.4 27,329.2 — 43,937.8 Subtotal Rs. 80,434.7 Rs. 61,911.5 Rs. 97,219.4 Rs. 189,834.9 Rs. 413,863.3 Rs. 600,365.7 Rs. 1,934,995.7 Rs. — Rs. 3,378,625.2 Commercial vehicle and construction equipment finance Performing Rs. 3,981.3 Rs. 19,618.5 Rs. 49,030.6 Rs. 92,773.8 Rs. 277,461.6 Rs. 629,405.5 Rs. 191,792.7 Rs. — Rs. 1,264,064.0 Non-performing 398.0 2,582.1 4,491.4 4,696.0 3,053.3 763.8 5,839.2 — 21,823.8 Subtotal Rs. 4,379.3 Rs. 22,200.6 Rs. 53,522.0 Rs. 97,469.8 Rs. 280,514.9 Rs. 630,169.3 Rs. 197,631.9 Rs. — Rs. 1,285,887.8 Housing loans Performing Rs. 394,712.3 Rs. 160,447.9 Rs. 143,037.0 Rs. 120,214.8 Rs. 167,130.4 Rs. 29,458.9 Rs. — Rs. — Rs. 1,015,001.3 Non-performing 4,031.5 1,206.1 358.8 180.2 123.3 0.4 — — 5,900.3 Subtotal Rs. 398,743.8 Rs. 161,654.0 Rs. 143,395.8 Rs. 120,395.0 Rs. 167,253.7 Rs. 29,459.3 Rs. — Rs. — Rs. 1,020,901.6 Other retail loans Performing Rs. 5,564.3 Rs. 10,063.3 Rs. 18,382.0 Rs. 42,416.7 Rs. 150,038.1 Rs. 603,873.8 Rs. 930,078.5 Rs. — Rs. 1,760,416.7 Non-performing 3,000.6 3,254.9 11,339.9 3,171.9 2,261.4 971.8 32,822.4 — 56,822.9 Subtotal Rs. 8,564.9 Rs. 13,318.2 Rs. 29,721.9 Rs. 45,588.6 Rs. 152,299.5 Rs. 604,845.6 Rs. 962,900.9 Rs. — Rs. 1,817,239.6 Total Rs. 510,417.8 Rs. 320,947.2 Rs. 507,416.1 Rs. 775,037.4 Rs. 1,818,009.0 Rs. 3,600,410.4 Rs. 3,658,893.5 Rs. 315,448.9 Rs. 11,506,580.3 Total US$ 6,210.2 US$ 3,904.9 US$ 6,173.7 US$ 9,429.8 US$ 22,119.6 US$ 43,806.0 US$ 44,517.5 US$ 3,838.0 US$ 139,999.7
Wholesale loans
Financing Receivable Credit Quality Indicators	The following table provides information on primary credit quality indicators as o Term loans by origination Credit quality indicators-Internally assigned grade Prior 2018 2019 2020 2021 2022 Revolving Total (In millions) Wholesale loans Pass Rs. 5,289.7 Rs. 186,145.4 Rs. 195,703.7 Rs. 421,349.1 Rs. 1,006,687.4 Rs. 2,232,372.3 Rs. 984,145.8 Rs. 5,031,693.4 Labeled — 3,297.2 5,164.1 1,632.6 4,045.0 11,447.4 9,808.5 35,394.8 Non-performing 569.7 4,666.1 5,833.7 361.1 479.0 1,301.6 18,709.9 31,921.1 Total Rs. 5,859.4 Rs. 194,108.7 Rs. 206,701.5 Rs. 423,342.8 Rs. 1,011,211.4 Rs. 2,245,121.3 Rs. 1,012,664.2 Rs. 5,099,009.3 The following table provides information on primary credit quality indicators as of Term loans by origination Credit quality indicators- assigned grade Prior 2019 2020 2021 2022 2023 Revolving Total (In millions) Wholesale loans Pass Rs. 130,723.1 Rs. 135,400.3 Rs. 321,191.0 Rs. 708,309.0 Rs. 1,244,766.9 Rs. 1,471,254.9 Rs. 1,841,015.5 Rs. 5,852,660.7 Labeled 2,625.3 1,586.9 635.7 4,200.8 5,946.5 795.3 9,548.6 25,339.1 Non-performing 3,830.5 1,914.3 66.1 326.4 6,297.4 39.1 21,038.5 33,512.3 Total Rs. 137,178.9 Rs. 138,901.5 Rs. 321,892.8 Rs. 712,836.2 Rs. 1,257,010.8 Rs. 1,472,089.3 Rs. 1,871,602.6 Rs. 5,911,512.1 Total US$ 1,669.0 US$ 1,690.0 US$ 3,916.4 US$ 8,673.0 US$ 15,294.0 US$ 17,910.8 US$ 22,771.7 US$ 71,925.0
Receivable By Industry
Non-performing Financing Receivables	Non-performing loans by industry as of March 31, 2022 and March 31, 2023 are as follows: As of March 31, 2022 (In millions) Gross non-performing loans by industry: — Consumer Loans Rs. 35,554.7 — Agri Production—Food 23,569.7 — Retail Trade 15,124.1 — Agri Allied 13,255.0 — Road Transportation 12,961.6 — Consumer services 10,352.3 — Others (none greater than 5% of non-performing loans) 86,452.1 Total Rs. 197,269.5 As of March 31, 2023 (In millions) Gross non-performing loans by industry: — Consumer Loans Rs. 34,684.8 US$ 422.0 — Agri Production—Food 28,222.2 343.4 — Retail Trade 15,044.4 183.0 — Agri Allied 13,426.1 163.4 — Consumer services 11,505.0 140.0 — Road Transportation 10,031.1 122.0 — Others (none greater than 5% of non-performing loans) 87,795.2 1,068.2 Total Rs.200,708.8 US$ 2,442.0 Summary information relating to interest income recognized on non-performing loans during the fiscal years ended March 31, 2021, March 31, 2022 and March 31, 2023 is as follows: Fiscal year ended March 31, 2021 2022 2023 2023 (In millions) Interest income recognized on non-performing loans Rs. 7,025.3 Rs. 11,881.0 Rs. 7,738.0 US$ 94.1

Concentrations of credit risk (

Concentrations of credit risk (Tables) - Exposure to ten largest borrowers	12 Months Ended
	Mar. 31, 2023
Schedules of Concentration of Risk, by Risk Factor	The Bank’s portfolio of loans, credit substitute securities and non-funded exposure (including derivatives) is broadly diversified along industry and product lines, and as of March 31, 2022 and March 31, 2023, the exposures are as set forth below. As of March 31, 2022 Category Gross loans Fair value of Non-funded Total % (In millions, except percentages) Consumer Loans Rs. 3,746,781.7 Rs. — Rs. 3,035.7 Rs. 3,749,817.4 22.7 Power 671,859.4 70,346.0 52,366.6 794,572.0 4.8 Financial Institutions 618,494.1 51,844.1 13.1 670,351.3 4.1 NBFC 509,445.4 106,764.5 5,818.5 622,028.4 3.8 Retail Trade 589,947.3 — 28,857.8 618,805.1 3.7 Coal & Petroleum Products 233,583.7 174,424.6 149,716.9 557,725.2 3.4 Infrastructure Development 272,428.0 18,032.7 220,442.5 510,903.2 3.1 Automobile & Auto Ancillary 443,538.7 19,768.7 36,999.9 500,307.3 3.0 Consumer Services 465,465.8 — 28,102.4 493,568.2 3.0 Food and Beverage 433,042.2 — 39,007.2 472,049.4 2.9 Wholesale Trade—Non Industrial 417,954.8 — 26,147.5 444,102.3 2.7 Real Estate & Property Services 383,765.5 4,792.6 40,694.4 429,252.5 2.6 Wholesale Trade—Industrial 347,202.9 — 73,867.5 421,070.4 2.5 Road Transportation 406,376.4 — 10,269.5 416,645.9 2.5 Iron and Steel 321,587.7 12,486.0 80,515.7 414,589.4 2.5 Telecom 331,131.1 2,989.4 43,335.9 377,456.4 2.3 Textiles & Garments 324,419.6 6,135.7 43,748.6 374,303.9 2.3 Engineering 253,105.1 6,666.6 105,164.7 364,936.4 2.2 Agri Production—Food 350,859.6 — 963.1 351,822.7 2.1 Others (none greater than 2%) 3,288,555.0 108,769.3 546,407.8 3,943,732.1 23.8 Total Rs. 14,409,544.0 Rs. 583,020.2 Rs. 1,535,475.3 Rs. 16,528,039.5 100.0 As of March 31, 2023 Category Gross loans Fair value of Non-funded Total Total % (In millions, except percentages) Consumer Loans Rs. 4,410,346.6 Rs. — Rs. 2,550.8 Rs. 4,412,897.4 US$ 53,691.4 22.4 Retail Trade 973,274.3 — 36,013.4 1,009,287.7 12,279.9 5.1 Power 695,716.5 64,805.5 45,576.3 806,098.3 9,807.7 4.1 NBFC 690,783.9 91,595.9 15,995.5 798,375.3 9,713.8 4.1 Financial Institutions 659,117.5 72,068.3 4,435.4 735,621.2 8,950.3 3.7 Consumer Services 581,272.1 3,545.4 123,464.7 708,282.2 8,617.6 3.6 Food and Beverage 566,172.9 1,419.2 49,084.4 616,676.5 7,503.1 3.1 Road Transportation 568,414.2 — 12,512.4 580,926.6 7,068.1 3.0 Coal & Petroleum Products 353,329.8 115,279.8 102,771.3 571,380.9 6,952.0 2.9 Wholesale Trade—Non Industrial 530,057.5 1,988.8 31,887.0 563,933.3 6,861.3 2.9 Automobile & Auto Ancillary 483,658.4 17,656.8 38,921.4 540,236.6 6,573.0 2.7 Real Estate & Property Services 458,906.6 4,691.4 52,228.7 515,826.7 6,276.0 2.6 Wholesale 421,900.9 — 70,853.6 492,754.5 5,995.3 2.5 Infrastructure Development 284,690.7 15,220.2 170,452.2 470,363.1 5,722.9 2.4 Engineering 300,745.5 5,596.0 131,956.5 438,298.0 5,332.7 2.2 Agri—Allied 431,581.2 — 2,701.2 434,282.4 5,283.9 2.2 Iron and Steel 360,021.9 12,231.9 61,224.3 433,478.1 5,274.1 2.2 Textiles & Garments 390,883.0 4,984.5 34,729.1 430,596.6 5,239.0 2.2 Telecom 365,112.3 — 42,221.1 407,333.4 4,956.0 2.1 Agri Production—Food 401,720.3 — 1,040.5 402,760.8 4,900.4 2.0 Others (none greater than 2%) 3,490,386.3 92,104.1 719,829.4 4,302,319.8 52,346.0 22.0 Total Rs. 17,418,092.4 Rs. 503,187.8 Rs. 1,750,449.2 Rs. 19,671,729.4 US $ 239,344.5 100.0
Fair Value, Concentration of Risk	The Bank’s ten largest exposures as of March 31, 2022 and March 31, 2023, based on the higher of the outstanding balance or the limit on loans, investments (including credit substitutes) and non-funded exposures (including derivatives), are as As of March 31, 2022 Funded Non-Funded Total (In millions) Borrower 1 Rs. 265,661.9 Rs. 500.0 Rs. 266,161.9 Borrower 2 245,435.0 — 245,435.0 Borrower 3 119,950.5 116,547.4 236,497.9 Borrower 4 150,283.8 — 150,283.8 Borrower 5 126,639.8 19,268.4 145,908.2 Borrower 6 142,600.0 — 142,600.0 Borrower 7 140,000.0 232.0 140,232.0 Borrower 8 137,700.0 199.2 137,899.2 Borrower 9 133,670.0 — 133,670.0 Borrower 10 108,591.5 17,855.7 126,447.2 As of March 31, 2023 Funded Non-Funded Total Total (In millions) Borrower 1 Rs. 284,002.5 Rs. — Rs. 284,002.5 US$ 3,455.4 Borrower 2 220,901.6 1,200.0 222,101.6 2,702.3 Borrower 3 205,801.0 — 205,801.0 2,504.0 Borrower 4 80,344.5 112,144.7 192,489.2 2,342.0 Borrower 5 185,299.0 — 185,299.0 2,254.5 Borrower 6 154,296.7 21,764.8 176,061.5 2,142.1 Borrower 7 155,565.7 60.0 155,625.7 1,893.5 Borrower 8 139,808.3 — 139,808.3 1,701.0 Borrower 9 121,560.0 6,030.3 127,590.3 1,552.4 Borrower 10 112,479.0 15,070.0 127,549.0 1,551.9

Property and equipment (Tables)

Property and equipment (Tables)	12 Months Ended
	Mar. 31, 2023
Property, Plant and Equipment	Property and equipment by asset category is as follows: As of March 31, 2022 2023 2023 (In millions) Land and premises Rs. 22,754.4 Rs. 25,501.3 US$ 310.3 Software and systems 45,767.3 56,092.8 682.5 Equipment and furniture 106,945.7 132,553.5 1,612.9 Property and equipment, at cost 175,467.4 214,147.6 2,605.7 Less: Accumulated depreciation 109,641.0 126,577.9 1,540.1 Property and equipment, net Rs. 65,826.4 Rs. 87,569.7 US$ 1,065.6

Other assets (Tables)

Other assets (Tables)	12 Months Ended
	Mar. 31, 2023
Other Assets Disclosure	Other assets include the following: As of March 31, 2022 2023 2023 (In millions) Security deposits for leased property Rs. 5,687.6 Rs. 6,461.8 US$ 78.6 Sundry accounts receivable 52,033.2 84,217.8 1,024.7 Advance income tax (in excess of current tax expense) 41,941.6 52,006.4 632.8 Advances 10,705.4 14,724.3 179.1 Prepaid expenses 4,333.2 4,757.4 57.9 Deposits/Margins paid 10,330.7 14,959.0 182.0 Derivatives (see note 23) 80,202.3 121,749.4 1,481.3 Term placements 471,502.0 970,063.2 11,802.7 Receivable on account of trade date 2,025.2 8,442.2 102.7 Right use 71,572.2 89,989.3 1,094.9 Others ( ) 114,420.9 129,380.8 1,574.1 Total Rs. 864,754.3 Rs. 1,496,751.6 US$ 18,210.8 ( ) Others include equity securities with carrying value amounting to Rs. 14,736.7 22,103.4 of 2,665.9 2,640.8 of (7,633.5) 7,160.1 fiscal

Deposits (Tables)

Deposits (Tables)	12 Months Ended
	Mar. 31, 2023
Deposit Liabilities Table Disclosures	Deposits include demand deposits, which are non-interest-bearing, and savings and time deposits, which are interest-bearing. Deposits as of March 31, 2022 and March 31, 2023 were as follows: As of March 31, 2022 2023 2023 (In millions) Interest-bearing: Savings deposits Rs. 5,117,372.1 Rs. 5,624,911.4 US$ 68,437.9 Time deposits 8,080,607.6 10,472,547.9 127,418.8 Total interest-bearing deposits 13,197,979.7 16,097,459.3 195,856.7 Non-interest-bearing deposits 2,382,052.2 2,729,176.3 33,205.7 Total Rs. 15,580,031.9 Rs. 18,826,635.6 US$ 229,062.4
Time Deposits By Maturity	As of March 31, 2023, the scheduled maturities for total time deposits were as follows: As of March 31, 2023 (In millions) Due to mature in the fiscal year ending March 31: 2024 Rs. 7,121,444.9 US$ 86,646.1 2025 2,119,471.5 25,787.5 2026 518,151.5 6,304.3 2027 235,850.6 2,869.6 2028 341,065.1 4,149.7 Thereafter 136,564.3 1,661.6 Total Rs. 10,472,547.9 US$ 127,418.8

Short-term borrowings (Tables)

Short-term borrowings (Tables)	12 Months Ended
	Mar. 31, 2023
Short-Term Borrowings	Short-term borrowings are mainly comprised of money market borrowings which are unsecured and are utilized by the Bank for its operations. Short-term borrowings as of March 31, 2022 and March 31, 2023 were comprised of the following: As of March 31, 2022 2023 2023 (In millions) Borrowed in the call market Rs. 9,001.8 Rs. 14,359.5 US$ 174.7 Term borrowings from institutions/banks 114,500.0 735,131.5 8,944.3 Foreign currency borrowings 430,665.8 320,695.0 3,901.9 Bills rediscounted 19,711.5 239.8 Total Rs. 554,167.6 Rs. 1,089,897.5 US$ 13,260.7 Total borrowings outstanding: Maximum amount outstanding Rs. 805,872.6 Rs. 1,154,282.6 US$ 14,044.1 Average amount outstanding Rs. 377,877.2 Rs. 870,879.3 US$ 10,595.9 Weighted average interest rate 1.6 % 4.0 % 4.0 %

Long-term debt (Tables)

Long-term debt (Tables)	12 Months Ended
	Mar. 31, 2023
Schedule of Long-term Debt Instruments	The below table presents the balance of long-term debt as of March 31, 2022 and March 31, 2023 and the related contractual rates and maturity dates: As of March 31, 2022 March 31, 2023 Maturity / Stated interest rates Total Maturity / Stated interest rates Total Total (In millions) Subordinated debt Subordinated debt (other than perpetual debt) 2023-2031 7.35% to 10.20% Rs. 89,759.4 2024-2033 7.35% to 10.20% Rs. 248,983.8 US$ 3,029.4 Perpetual debt — (1) 2023-2030 7.55% to 9.70% 93,848.2 2024-2030 7.55% to 9.40% 43,850.5 533.5 Perpetual debt — (2) 2027 3.70% 75,216.3 2027 3.70% 81,724.6 994.3 Others ( ) Variable rate — (1) 2023-2024 1.40% to 1.80% 40,045.9 2024-2026 1.40% to 4.80% 76,405.9 929.6 Variable rate — (2) 2023-2027 4.40% to 6.90% 82,243.1 2024-2029 4.50% to 9.44% 148,813.9 1,810.6 Fixed rate — (1) 2023-2030 2.80% to 9.21% 1,173,220.5 2024-2030 2.80% to 9.81% 1,374,137.4 16,719.0 Fixed rate — (2) — — — 2024 2.58% 80,520.3 979.8 Total Rs. 1,554,333.4 Rs. 2,054,436.4 US$ 24,996.2 ( ) Variable rate — (1), Perpetual debt — (2) and Fixed rate — (2) represent foreign currency debt. Variable rat e deb T-bill
Maturities of Long-Term Debt Disclosures	The scheduled maturities of long-term debt are set out below: As of March 31, 2023 (In millions) Due in the fiscal year ending March 31: 2024 Rs. 515,282.4 US$ 6,269.4 2025 231,738.2 2,819.5 2026 653,549.2 7,951.7 2027 141,079.6 1,716.5 2028 48,214.9 586.6 Thereafter 338,997.0 4,124.7 Total (1) Rs. 1,928,861.3 US$ 23,468.4 (1) The scheduled maturities of long-term debt do not include perpetual bonds of Rs. 125,575.1
Long-term Debt
Schedule of Long-term Debt Instruments	Long-term debt as of March 31, 2022 and March 31, 2023 was comprised of the following: As of March 31, 2022 2023 2023 (In millions) Subordinated debt Rs. 259,452.5 Rs. 375,060.0 US$ 4,563.3 Others ( ) 1,295,854.3 1,681,587.2 20,459.8 Debt issuance cost (973.4 ) (2,210.8 ) (26.9 ) Total Rs. 1,554,333.4 Rs. 2,054,436.4 US$ 24,996.2 ( ) Includes securities sold under repurchase agreements amounting to Rs. 90,200.0 million with a stated interest rate of 4.0% per annum and Rs. 90,200.0 million (US$ 1,097.5 million) with stated interest rate of 4.2% per annum for the fiscal

Accrued expenses and other li_2

Accrued expenses and other liabilities (Tables)	12 Months Ended
	Mar. 31, 2023
Accrued Expenses and Other Liabilities	Accrued expenses and other liabilities include the amounts set forth below: As of March 31, 2022 2023 2023 (In millions) Bills payable Rs. 130,937.4 Rs. 117,907.5 US$ 1,434.6 Remittances in transit 91,766.3 61,927.3 753.5 Accrued expenses 58,522.2 45,684.4 555.8 Accounts payable 152,309.2 206,920.4 2,517.6 Derivatives (see note 23) 74,819.2 98,783.5 1,201.9 Lease liabilities 78,138.0 97,658.9 1,188.2 Others 94,969.2 125,471.4 1,526.6 Total Rs. 681,461.5 Rs. 754,353.4 US$ 9,178.2

Accumulated other comprehensi_2

Accumulated other comprehensive income (Tables)	12 Months Ended
	Mar. 31, 2023
Changes in Accumulated Other Comprehensive Income After Tax	The below table presents the changes in AOCI after income tax for the fiscal years ended March 31, 2022 and March 31, 2023. AFS debt securities Foreign currency Total (In millions) Balance, March 31, 2021 Rs. 25,212.9 Rs. 1,973.4 Rs. 27,186.3 Net unrealized gain/(loss) arising during the period (36,088.6 ) 1,297.5 (34,791.1 ) Amounts reclassified to income (10,187.7 ) — (10,187.7 ) Balance, March 31, 2022 Rs. (21,063.4 ) Rs. 3,270.9 Rs. (17,792.5 ) AFS debt securities Foreign currency Total (In millions) Balance, March 31, 2022 Rs. (21,063.4 ) Rs. 3,270.9 Rs. (17,792.5 ) Net unrealized gain/(loss) arising during the period (52,522.8 ) 3,378.5 (49,144.3 ) Amounts reclassified to income (1,336.9 ) — (1,336.9 ) Balance, March 31, 2023 Rs. (74,923.1 ) Rs. 6,649.4 Rs. (68,273.7 ) Balance, March 31, 2023 US$ (911.6 ) US$ 80.9 US$ (830.7 )
Reclassification Out of Accumulated Other Comprehensive Income (OCI) by Income line Item and the Related Tax Effect	The below table presents the reclassification out of AOCI by income line item and the related income tax effect for the fiscal years ended March 31, 2022 and March 31, 2023. As of March 31, 2022 2023 2023 (In millions) AFS debt securities: Realized (gain)/loss on sales of AFS debt securities, net Rs. (10,699.4 ) Rs. (1,857.5 ) US$ (22.7 ) Allowance on AFS debt securities (2,915.1 ) 70.9 0.9 Total before income tax Rs. (13,614.5 ) Rs. (1,786.6 ) US$ (21.8 ) Income tax 3,426.8 449.7 5.5 Net of income tax Rs. (10,187.7 ) Rs. (1,336.9 ) US$ (16.3 )

Non-interest revenue (Tables)

Non-interest revenue (Tables)	12 Months Ended
	Mar. 31, 2023
Summary of Disaggregation of Revenue	The table below presents the fees and commissions disaggregated by revenue source for the fiscal years ended March 31, 2021, March 31, 2022 and March 31, 2023. Fiscal year ended March 31, 2021 2022 2023 2023 (In millions) Deposit related fees Rs. 28,150.4 Rs. 37,415.4 Rs. 40,749.9 US$ 495.8 Lending related fees 30,973.1 40,532.5 48,878.2 594.7 Third-party products related fees 35,733.0 44,216.1 54,548.9 663.7 Payments and cards business fees 50,758.2 56,170.2 72,969.0 887.8 Others 19,795.7 24,645.3 22,457.7 273.2 Fees and commissions Rs. 165,410.4 Rs. 202,979.5 Rs. 239,603.7 US$ 2,915.2
Summary of Disaggregation of Revenue from Business Segments	The table below presents the fees and commission disaggregated by segment for the fiscal years ended March 31, 2021, March 31, 2022 and March 31, 2023. Fiscal year ended March 31, 2021 2022 2023 2023 (In millions) Retail Banking Rs. 153,018.2 Rs. 182,464.1 Rs. 215,252.5 US$ 2,618.9 Wholesale Banking 11,712.7 19,802.0 23,619.5 287.4 Treasury Services 679.5 713.4 731.7 8.9 Fees and commissions Rs. 165,410.4 Rs. 202,979.5 Rs. 239,603.7 US$ 2,915.2

Income taxes (Tables)

Income taxes (Tables)	12 Months Ended
	Mar. 31, 2023
Income Tax Expense	Income tax expense is comprised of the following: Fiscal year ended March 31, 2021 2022 2023 2023 (In millions) Current tax expense Rs. 122,087.4 Rs. 142,446.5 Rs. 156,782.9 US$ 1,907.6 Deferred tax expense/ (benefit) (8,267.3 ) (9,887.3 ) 12,280.9 149.4 Interest on income tax refund — — (2,946.4 ) (35.9 ) Income tax expense Rs. 113,820.1 Rs. 132,559.2 Rs. 166,117.4 US$ 2,021.1
Reconciliation of Income Taxes at Indian Statutory Income Tax Rate to Income Tax Expense as Reported	The following is a reconciliation of income taxes at the Indian statutory income tax rate, the income tax rate of the Bank’s country of domicile, to income tax expense as reported: Fiscal year ended March 31, 2021 2022 2023 2023 (In millions) Income before income tax expense Rs. 439,826.5 Rs. 519,162.2 Rs. 662,381.8 US$ 8,058.9 Statutory income tax rate 25.17 % 25.17 % 25.17 % 25.17 % Expected income tax expense 110,695.5 130,662.7 166,708.3 2,028.3 Adjustments to reconcile expected income tax to actual income tax expense Interest on income tax refund — — (2,204.9 ) (26.8 ) Nondeductible stock-based compensation 2,668.7 3,493.1 1,645.9 20.0 Income subject to rates other than the statutory income tax rate — (2,347.6 ) (6.8 ) (0.1 ) Income exempt from i (62.3 ) — — — Others, net 518.2 751.0 (25.1 ) (0.3 ) Income tax expense Rs. 113,820.1 Rs. 132,559.2 Rs. 166,117.4 US$ 2,021.1
Tax Effects of Significant Temporary Differences	The tax effects of significant temporary differences are as follows: As of March 31, 2022 2023 2023 (In millions) Tax effect of: Deductible temporary differences: Allowance for credit losses Rs. 79,821.5 Rs. 74,143.7 US$ 902.1 Investments AFS debt securities 6,997.0 25,117.0 305.6 Lease liabilities 19,745.8 24,578.8 299.0 Employee benefits 728.1 709.9 8.6 Accrued expenses and other liabilities 3,772.1 3,939.2 47.9 Others 2,158.9 1,520.3 18.5 Deferred tax assets 113,223.4 130,008.9 1,581.7 Taxable temporary differences: Right-of-use assets 19,745.8 24,578.8 299.0 Loans 5,024.1 7,070.1 86.0 Investments, others 3,097.2 8,304.6 101.0 Deferred tax liabilities 27,867.1 39,953.5 486.0 Net deferred tax asset/ (liability) Rs. 85,356.3 Rs. 90,055.4 US$ 1,095.7
Reconciliation of Beginning and Ending Balance of Unrecognized Tax Benefits	A reconciliation of the beginning and ending balance of unrecognized tax benefits is as follows: Fiscal year ended March 31, 2022 2023 2023 (In millions) Opening balance Rs. 43,048.0 Rs. 46,774.3 US$ 569.1 Settlements related to prior year tax positions (1,985.0 ) — — Increase related to current year tax positions Rs. 5,711.3 Rs. 2,017.8 US$ 24.6 Closing balance Rs. 46,774.3 Rs. 48,792.1 US$ 593.7

Stock-based compensation (Table

Stock-based compensation (Tables)	12 Months Ended
	Mar. 31, 2023
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions	The fair value of employee stock option schemes has been estimated on the dates of each grant using a binomial option pricing model with the following assumptions: Fiscal years ended March 31, 2021 2022 2023 Dividend yield 0.61% 0.43%-0.46% 0.51%-0.97% Expected volatility 20.13%-28.93% 21.71%-31.79% 21.97%-33.50% Risk-free interest rate 4.63%-5.75% 4.99%-6.43% 6.14%-7.59% Expected term (in years) 2.65-5.43 2.59-5.36 2.53-7.25
Schedule of Share-based Compensation, Stock Options, Activity	Activity in the options available to be granted under the employee stock option scheme is as follows: Number of options available to be granted 2021 2022 2023 Options available to be granted, beginning of period 159,487,350 104,694,170 81,992,420 Equity shares allocated for grant under the plan — — — Options granted (57,466,600 ) (25,628,600 ) (30,480,145 ) Forfeited/lapsed 2,673,420 2,926,850 2,701,890 Options available to be granted, end of period 104,694,170 81,992,420 54,214,165 Activity in the options outstanding under the employee stock option scheme is as follows: Fiscal years ended March 31, 2021 2022 2023 Options Weighted Options Weighted Options Weighted Options outstanding, beginning of period 142,865,602 Rs. 899.03 168,168,760 Rs. 1,063.79 158,106,016 Rs. 1,175.65 Granted 57,466,600 1,235.80 25,628,600 1,427.29 30,480,145 1,425.69 Exercised (29,490,022 ) 596.85 (32,764,494 ) 796.52 (34,201,810 ) 998.73 Forfeited (2,032,110 ) 1,163.29 (2,639,100 ) 1,231.84 (2,175,700 ) 1,274.53 Lapsed (641,310 ) 929.57 (287,750 ) 870.34 (526,190 ) 1,033.65 Options outstanding, end of period 168,168,760 Rs. 1,063.79 158,106,016 Rs. 1,175.65 151,682,461 Rs. 1,264.86 Options exercisable, end of period 64,453,260 Rs. 834.48 65,321,116 Rs. 1,036.49 65,124,916 Rs. 1,162.96 Weighted average fair value of options granted during the year Rs. 320.42 Rs. 415.12 Rs. 548.11
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range	The following summarizes information about stock options outstanding as of March 31, 2023: As of March 31, 2023 Plan Range of exercise price Number of shares arising Weighted average remaining life (years) Weighted average exercise price Plan F Rs. 716.60 (or US$ 8.72) 7,449,626 0.83 Rs. 716.60 Plan G Rs. 882.85 to Rs. 1,673.10 (or US$ 10.74 to US$ 20.36) 144,232,835 2.87 Rs. 1,293.20
Schedule of Share Based Compensation By Share Based Award Restricted Stock Units Valuation Assumptions	The fair value of restricted stock units has been estimated on the dates of each grant using a binomial option pricing model with the following assumptions: Fiscal year ended March 31, 2023 Dividend yield 0.47%-0.75% Expected volatility 23.68%-35.35% Risk-free interest rate 7.07%-7.57% Expected term (in years) 1.0- 4.0
Schedule Of Movement In Restricted Stock Units	Activity in the RSUs outstanding under the various Employees’ Stock Incentive Master Scheme as of March 31, 2023: Number of RSUs available to be granted RSUs available to be granted, beginning of period — Equity shares allocated for grant under the scheme 100,000,000 RSUs granted (2,891,000 ) Forfeited/lapsed — RSUs available to be granted, end of period 97,109,000
Schedule of Share-based Compensation, Restricted Stock Units, Activity	Activity in the RSUs outstanding under the various Employees’ Stock Incentive Master Scheme as at March 31, 2023: Fiscal years ended March 31, 2023 Units Weighted average RSUs outstanding, beginning of period — Rs. — Granted 2,891,000 1.0 Exercised — — Forfeited — — Lapsed — — RSUs outstanding, end of period 2,891,000 Rs. 1.0 RSUs exercisable, end of period — Rs. — Weighted average fair value of RSUs granted during the year Rs. 1,382.34
Schedule of Share-based Compensation, Shares Authorized under Restricted Stock Units Plans, by Exercise Price Range	The following summarizes information about RSUs outstanding as of March 31, 2023: As of March 31, 2023 Plan Range of exercise price Number of Weighted Weighted ESIS 2022 Rs. 1.00 (or US$ 0) 2,891,000 3.02 1.00

Retirement benefits (Tables)

Retirement benefits (Tables)	12 Months Ended
	Mar. 31, 2023
Schedule of Allocation of Plan Assets	Plan investment assets for gratuity funds and the pension fund measured at fair value by level and in total as of March 31, 2022 and March 31, 2023 are summarized in the table below. As of March 31, 2022 As of March 31, 2023 Level 1 Level 2 Level 3 Level 1 Level 2 Level 3 (In millions) Funds managed by insurance company (1) Rs. — Rs. — Rs. 779.8 Rs. — Rs. — Rs. 864.5 Funds managed by insurance company (2) — 9,016.0 — — 9,829.4 — Funds managed by trust — Government securities — 68.1 — — 60.8 — — Debenture and bonds — 53.0 — — 54.8 — — Others 111.1 — — 109.6 — — Total Rs. 111.1 Rs. 9,137.1 Rs. 779.8 Rs. 109.6 Rs. 9,945.0 Rs. 864.5 US$ 1.3 US$ 121.0 US$ 10.5
Schedule of Effect of Significant Unobservable Inputs, Changes in Plan Assets	The table below presents a reconciliation of all Plan investment assets measured at fair value using significant unobservable inputs (Level 3) during the fiscal years ended March 31, 2022 and March 31, 2023. Funds managed by Insurance 2022 2023 2023 (In millions) Particulars Opening balance Rs. 664.1 Rs. 779.8 US$ 9.5 Realized interest credited to fund 48.1 54.8 0.7 Contribution during the period 131.1 148.6 1.8 Amount paid towards claim (63.5 ) (118.7 ) (1.5 ) Closing balance Rs. 779.8 Rs. 864.5 US$ 10.5
Gratuity
Schedule of Defined Benefit Plans Disclosures	The following table sets out the funded status of the gratuity plan and the amounts recognized in the Bank’s financial statements as of March 31, 2022 and March 31, 2023: As of March 31, 2022 2023 2023 (In millions) Change in benefit obligations: Projected benefit obligation (“PBO”), beginning of the period Rs. 9,819.6 Rs. 10,688.7 US$ 130.1 Service cost 1,268.0 1,398.6 17.0 Interest cost 631.2 773.4 9.4 Actuarial(gains)/ losses (260.6 ) (252.4 ) (3.1 ) Benefits paid (769.5 ) (1,116.7 ) (13.6 ) Projected benefit obligation, end of the period 10,688.7 11,491.6 139.8 Change in plan assets: Fair value of plan assets, beginning of the period 8,344.6 10,019.3 121.9 Expected return on plan assets 574.1 668.2 8.1 Actuarial gains/(losses) 237.1 (390.0 ) (4.7 ) Actual return on plan assets 811.2 278.2 3.4 Employer contributions 1,633.0 1,735.3 21.1 Benefits paid (769.5 ) (1,116.7 ) (13.6 ) Fair value of plan assets, end of the period 10,019.3 10,916.1 132.8 Funded Status Rs. (669.4 ) Rs. (575.5 ) US$ (7.0 )
Schedule of Net Benefit Costs	Net gratuity cost for the years ended March 31, 2021, March 31, 2022 and March 31, 2023 was comprised of the following components: Fiscal years ended March 31, 2021 2022 2023 2023 (In millions) Service cost Rs. 1,107.0 Rs. 1,268.0 Rs. 1,398.6 US$ 17.0 Interest cost 561.6 631.2 773.4 9.4 Expected return on plan assets (448.4 ) (574.1 ) (668.2 ) (8.1 ) Actuarial (gains)/losses (463.6 ) (497.7 ) 137.6 1.6 Net gratuity cost Rs. 756.6 Rs. 827.4 Rs. 1,641.4 US$ 19.9
Schedule of Assumptions Used	The assumptions used in accounting for the gratuity plan are set out below: Fiscal years ended March 31, 2021 2022 2023 (% per annum) Discount rate ( ) 4.4-7.0 5.1-7.3 5.1-7.9 Rate of increase in compensation levels of covered employees 5.0-9.0 6.0-11.0 6.0-11.0 Rate of return on plan assets 4.4-7.0 5.1-7.0 5.1-7.2 Mortality rates used are based on the published “Indian Assured Lives Mortality (2012-2014) Ultimate” table ( ) Weighted average assumptions used to determine both benefit obligations and net periodic benefit cost.
Schedule of Expected Benefit Payments	The following benefit payments, which includes benefits attributable to expected future service, as appropriate, are expected to be paid. Fiscal years ending March 31, Benefit payments (In millions) 2024 Rs. 1,638.6 2025 1,352.0 2026 1,108.3 2027 966.1 2028 1,024.9 2029 - 2033 3,919.2
Schedule of Allocation of Plan Assets	As of March 31, 2023, the plan assets as a percentage of the total funds were as follows: As of March 31, 2023 Funds managed ( ) Funds managed ( ) Funds Government securities 81.3 % 32.4 % 26.1 % Debenture and bonds 9.7 % 17.2 % 24.5 % Equity securities 8.9 % 43.9 % — Other 0.1 % 6.5 % 49.4 % Total 100.0 % 100.0 % 100.0 % ( ) The data pertaining to plan investment assets measured at fair value by level and total at March 31, 2023 are provided separately.
Pension
Schedule of Defined Benefit Plans Disclosures	The following table sets out the funded status of the pension plan and the amounts recognized in the Bank’s financial statements as of March 31, 2022 and March 31, 2023: As of March 31, 2022 2023 2023 (In millions) Change in benefit obligations: Projected benefit obligation (“PBO”), beginning of the period Rs. 862.0 Rs. 840.9 US$ 10.3 Plan amendment (prior service cost) 76.9 — — Service cost 16.1 18.5 0.2 Interest cost 55.8 57.3 0.7 Actuarial (gains)/losses 34.4 221.4 2.7 Benefits paid (204.3 ) (120.1 ) (1.5 ) Projected benefit obligation, end of the period 840.9 1018.0 12.4 Change in plan assets: Fair value of plan assets, beginning of the period 3.3 8.7 0.1 Expected return on plan assets 0.4 0.4 — Actuarial gains/(losses) 2.3 2.2 — Actual return on plan assets 2.7 2.6 — Employer contributions 207.0 111.8 1.5 Benefits paid (204.3 ) (120.1 ) (1.5 ) Fair value of plan assets, end of the period 8.7 3.0 0.1 Funded Status Rs. (832.2) Rs. (1,015.0) US$ (12.3 )
Schedule of Net Benefit Costs	Net pension cost for the fiscal years ended March 31, 2021, March 31, 2022 and March 31, 2023 was comprised of the following components: As of March 31, 2021 2022 2023 2023 (In millions) Service cost Rs. 14.6 Rs. 93.0 Rs. 18.5 US$ 0.2 Interest cost 37.7 55.8 57.3 0.7 Expected return on plan assets (3.2 ) (0.4 ) (0.4 ) — Actuarial (gains)/losses 329.6 32.1 219.2 2.7 Net pension cost Rs. 378.7 Rs. 180.5 Rs. 294.6 US$ 3.6
Schedule of Assumptions Used	The assumptions used in accounting for the pension plan are set out below: Fiscal years ended March 31, 2021 2022 2023 (% per annum) Discount rate ( ) 7.0 7.3 7.9 Rate of increase in compensation levels of covered employees 7.0 7.0 10.0 Rate of return on plan assets 6.5 6.5 6.5 Mortality rates used are based on the published “Indian Assured Lives Mortality (2012-2014) Ultimate” table. ( ) Weighted average assumptions used to determine both benefit obligations and net periodic benefit cost.
Schedule of Expected Benefit Payments	The following benefit payments, which include benefits attributable to expected future service, as appropriate, are expected to be paid. Fiscal years ending March 31, Benefit payments (In millions) 2024 Rs. 110.7 2025 103.7 2026 77.8 2027 86.7 2028 92.9 2029-2033 766.6
Schedule of Allocation of Plan Assets	The weighted-average asset allocation of said plan assets for the pension benefits as of March 31, 2023 is as follows: Asset category Funds managed Government securities 90.1 % Debenture and bonds 9.9 % Other — Total 100.0 %

Financial instruments (Tables)

Financial instruments (Tables)	12 Months Ended
	Mar. 31, 2023
Schedule of Derivative Instruments	The following table presents the aggregate notional principal amounts of the Bank’s outstanding forward exchange and other derivative contracts as of March 31, 2022 and March 31, 2023, together with the fair value on each reporting date. As of March 31, 2022 Notional Gross Assets Gross Liabilities Net Fair Value (In millions) Interest rate derivatives Rs. 5,142,612.3 Rs. 28,564.1 Rs. 27,644.4 Rs. 919.7 Forward rate agreements 50,610.7 1,574.1 14.8 1,559.3 Currency options 434,371.3 1,845.1 2,439.5 (594.4 ) Currency swaps 308,757.4 10,463.6 4,312.3 6,151.3 Forward exchange contracts 6,551,871.8 37,755.4 40,408.2 (2,652.8 ) Total Rs. 12,488,223.5 Rs. 80,202.3 Rs. 74,819.2 Rs. 5,383.1 As of March 31, 2023 Notional Gross Assets Gross Liabilities Net Fair Value Notional Net Fair Value (In millions) Interest rate derivatives Rs. 5,974,019.2 Rs. 41,148.2 Rs. 36,627.4 Rs. 4,520.8 US$ 72,685.5 US$ 55.0 Forward rate agreements 140,693.0 1,848.4 541.4 1,307.0 1,711.8 15.9 Currency options 257,641.1 1,402.4 1,578.3 (175.9 ) 3,134.7 (2.1 ) Currency swaps 372,114.3 21,753.7 7,213.4 14,540.3 4,527.5 176.9 Forward exchange contracts 9,052,221.4 55,596.7 52,823.0 2,773.7 110,137.7 33.7 Total Rs. 15,796,689.0 Rs. 121,749.4 Rs. 98,783.5 Rs. 22,965.9 US$ 192,197.2 US$ 279.4
Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance	The following table summarizes certain information related to derivative amounts recognized in income: Non-interest revenue, net– 2021 2022 2023 2023 (In millions) Interest rate derivatives Rs. 773.9 Rs. 3,207.7 Rs. 5,921.5 US$ 72.0 Forward rate agreements 205.9 1,374.1 (2.0 ) — Currency options 1,191.1 167.3 1,200.3 14.6 Currency swaps (3,309.2 ) (1,682.0 ) 1,609.1 19.6 Forward exchange contracts (2,114.7 ) (1,645.1 ) 6,637.2 80.8 Total gains/(losses) Rs. (3,253.0 ) Rs. 1,422.0 Rs. 15,366.1 US$ 187.0
Amounts Subject to Enforceable Netting Arrangements	As of March 31, 2022 Amounts subject to enforceable netting arrangements Effects of offsetting on balance sheet Related amounts not offset Gross Amounts Amounts Net amounts Financial Financial (1) Net amount (In millions) Financial assets Derivative assets Rs. 80,202.3 Rs. — Rs. 80,202.3 Rs. 48,942.8 Rs. 8,022.9 Rs. 23,236.6 Securities purchased under agreements to resell 373,053.3 — 373,053.3 — 373,053.3 — Financial liabilities Derivative liabilities Rs. 74,819.2 Rs. — Rs. 74,819.2 Rs. 48,942.8 Rs. 1,697.2 Rs. 24,179.2 Securities sold under repurchase agreements 151,844.9 — 151,844.9 — 151,844.9 — Long-term debt 90,200.0 — 90,200.0 — 90,200.0 — (1) Comprised of securities and cash collaterals. These amounts are limited to the asset/liability balance, and accordingly, do not include excess collateral received/pledged. As of March 31, 2023 Amounts subject to enforceable netting arrangements Effects of offsetting on balance sheet Related amounts not offset Gross Amounts Amounts Net amounts Financial Financial Net amount Net amount (In millions) Financial assets Derivative assets Rs. 121,749.4 Rs. — Rs. 121,749.4 Rs. 73,045.2 Rs. 19,402.2 Rs. 29,302.0 US$ 356.5 Securities purchased under agreements to resell 455,275.4 — 455,275.4 — 455,275.4 — — Financial liabilities Derivative liabilities Rs. 98,783.5 Rs. — Rs. 98,783.5 Rs. 73,045.2 Rs. 5,084.6 Rs. 20,653.7 US$ 251.3 Securities sold under repurchase agreements — — — — — — — Long Term debt 90,200.0 — 90,200.0 — 90,200.0 — — (1) Comprised of securities and cash collaterals. These amounts are limited to the asset/liability balance, and accordingly, do not include excess collateral received/pledged.
Schedule of Guarantor Obligations	Details of guarantees and documentary credits outstanding are set out below: As of March 31, 2022 2023 2023 (In millions) Nominal values: Bank guarantees: Financial guarantees Rs. 422,406.2 Rs. 494,191.3 US$ 6,012.8 Performance guarantees 417,227.2 519,953.0 6,326.2 Documentary credits 615,639.6 614,555.5 7,477.3 Total Rs. 1,455,273.0 Rs. 1,628,699.8 US$ 19,816.3 Estimated fair value: Guarantees Rs. (5,760.7 ) Rs. (7,041.8 ) US$ (85.7 ) Documentary credits (822.8 ) (869.3 ) (10.6 ) Total Rs. (6,583.5 ) Rs. (7,911.1 ) US$ (96.3 )
Summary of allowance for Credit Losses on Off-Balance sheet credit exposures and undrawn commitments	The allowance for credit losses included in accrued expenses and other liabilities on off-balance sheet credit exposures and undrawn commitments is as follows: As of March 31 , 2022 2023 2023 (In millions) Allowance for credit losses, beginning of the period Rs. 5,581.5 Rs. 6,087.6 US$ 74.1 Provision for credit exposures 506.1 (268.9 ) (3.3 ) Allowance for credit losses, end of the period Rs. 6,087.6 Rs. 5,818.7 US$ 70.8

Estimated fair value of finan_2

Estimated fair value of financial instruments (Tables)	12 Months Ended
	Mar. 31, 2023
Fair Value, by Balance Sheet Grouping	A comparison of the fair value and carrying value of financial instruments is set out below: As of March 31, 2022 March 31, 2023 Estimated fair value Estimated fair value Carrying Level 1 Level 2 Level 3 Total Carrying Level 1 Level 2 Level 3 Total Carrying Estimated (In millions) Financial Assets: Cash and due from banks, Rs. 1,122,031.1 Rs. 1,122,031.1 Rs. — Rs. — Rs. 1,122,031.1 Rs. 1,387,395.2 Rs. 1,387,395.2 Rs. — Rs. — Rs. 1,387,395.2 US$ 16,880.3 US$ 16,880.3 Investments held for trading 53,199.5 304.1 52,895.4 — 53,199.5 135,831.1 184.1 135,647.0 — 135,831.1 1,652.6 1,652.6 Investments available for sale debt 4,388,563.1 174,680.3 4,069,988.1 143,894.7 4,388,563.1 4,878,844.0 507,504.1 4,222,904.3 148,435.6 4,878,844.0 59,360.6 59,360.6 Securities purchased under 373,053.3 — 373,053.3 — 373,053.3 455,275.4 — 455,275.4 — 455,275.4 5,539.3 5,539.3 Loans 14,036,872.2 — 3,311,277.1 10,976,971.8 14,288,248.9 17,052,927.9 — 4,138,188.7 13,027,096.1 17,165,284.8 207,481.7 208,848.8 Accrued interest receivable 134,467.7 — 134,467.7 — 134,467.7 186,091.2 — 186,091.2 — 186,091.2 2,264.2 2,264.2 Other assets 686,475.6 3,889.8 680,762.1 — 684,651.9 1,292,086.7 3,313.7 1,286,529.0 — 1,289,842.7 15,720.7 15,693.4 Financial Liabilities Interest-bearing deposits 13,197,979.7 — 13,240,403.7 — 13,240,403.7 16,097,459.3 — 16,102,822.0 — 16,102,822.0 195,856.7 195,921.9 Non-interest-bearing deposits 2,382,052.2 — 2,382,052.2 — 2,382,052.2 2,729,176.3 — 2,729,176.3 — 2,729,176.3 33,205.7 33,205.7 Securities sold under repurchase 151,844.9 — 151,844.9 — 151,844.9 — — — — — — — Short-term borrowings 554,167.6 — 552,737.9 — 552,737.9 1,089,897.5 — 1,088,380.5 — 1,088,380.5 13,260.7 13,242.2 Accrued interest payable 82,412.8 — 82,412.8 — 82,412.8 112,463.2 — 112,463.2 — 112,463.2 1,368.3 1,368.3 Long-term debt 1,554,333.4 — 1,554,540.2 — 1,554,540.2 2,054,436.4 — 2,045,541.9 — 2,045,541.9 24,996.2 24,888.0 Accrued expenses and other liabilities 499,905.7 — 499,905.7 — 499,905.7 567,643.6 — 567,643.6 — 567,643.6 6,906.5 6,906.5

Segment information (Tables)

Segment information (Tables)	12 Months Ended
	Mar. 31, 2023
Schedule of Segment Reporting Information, by Segment	Summarized segment information for the fiscal years ended March 31, 2021, March 31, 2022 and March 31, 2023: Fiscal year ended March 31, 2021 2022 Retail Wholesale Treasury Total Retail Wholesale Treasury Total (In millions) Net interest income/ Rs. 361,343.5 Rs. 278,431.0 Rs. 43,912.0 Rs. 683,686.5 Rs. 418,823.0 Rs. 297,694.0 Rs. 32,322.5 Rs. 748,839.5 Net interest income/ 176,420.0 (143,863.7 ) (32,556.3 ) — 141,001.2 (113,339.0 ) (27,662.2 ) — Net interest revenue 537,763.5 134,567.3 11,355.7 683,686.5 559,824.2 184,355.0 4,660.3 748,839.5 Less: Provision for credit losses 145,822.0 8,411.4 — 154,233.4 122,622.6 4,356.9 — 126,979.5 Net interest revenue, after provision for credit losses 391,941.5 126,155.9 11,355.7 529,453.1 437,201.6 179,998.1 4,660.3 621,860.0 Non-interest revenue 175,447.7 72,420.1 5,107.9 252,975.7 203,468.5 55,813.2 11,292.5 270,574.2 Non-interest expense (306,461.1 ) (34,238.4 ) (1,902.8 ) (342,602.3 ) (345,321.5 ) (25,544.1 ) (2,406.4 ) (373,272.0 ) Income before income tax Rs. 260,928.1 Rs. 164,337.6 Rs. 14,560.8 Rs. 439,826.5 Rs. 295,348.6 Rs. 210,267.2 Rs. 13,546.4 Rs. 519,162.2 Income tax expense Rs. 113,820.1 Rs. 132,559.2 Segment assets: Segment total assets Rs. 9,356,987.2 Rs. 7,011,959.9 Rs. 1,610,834.9 Rs. 17,979,782.0 Rs. 11,384,802.9 Rs. 8,106,671.0 Rs. 1,622,231.6 Rs. 21,113,705.5 Fiscal year ended March 31, 2023 Retail Banking Wholesale Treasury Total Total (In millions) Net interest income/(expense) (external) Rs. 474,489.5 Rs. 367,857.6 Rs. 71,641.4 Rs. 913,988.5 US$ 11,120.5 Net interest income/(expense) (internal) 168,806.2 (116,903.5 ) (51,902.7 ) — — Net interest revenue 643,295.7 250,954.1 19,738.7 913,988.5 11,120.5 Less: Provision for credit losses 86,920.2 (12,706.4 ) — 74,213.8 903.0 Net interest revenue, after provision for credit losses 556,375.5 263,660.5 19,738.7 839,774.7 10,217.5 Non-interest revenue 252,576.6 42,286.9 (3,477.0 ) 291,386.5 3,545.1 Non-interest expense (432,689.9 ) (34,261.7 ) (1,827.8 ) (468,779.4 ) (5,703.7 ) Income before income tax Rs. 376,262.2 Rs. 271,685.7 Rs. 14,433.9 Rs. 662,381.8 US$ 8,058.9 Income tax expense Rs. 166,117.4 US$ 2,021.1 Segment assets: Segment total assets Rs. 13,599,750.2 Rs. 9,274,409.1 Rs. 2,881,464.7 Rs. 25,755,624.0 US$ 313,366.9

Commitments and contingencies (

Commitments and contingencies (Tables)	12 Months Ended
	Mar. 31, 2023
Summary Of Operating Lease Right Of Use Asset And Lease Liability	The Bank is party to operating leases for certain of its office premises and employee residences, with a renewal at the option of the Bank. Operating lease right-of-use assets and lease liabilities were as follows: As of March 31, 2022 2023 2023 (In millions) Right-of-use assets Rs. 71,572.2 Rs. 89,989.3 US$ 1,094.9 Lease liabilities 78,138.0 97,658.9 1,188.2
Operating Leases of Lessee Disclosure	The total lease expenses were as follows: As of March 31, 2021 2022 2023 2023 (In millions) The total minimum lease expense during the year recognized in the consolidated statement of income Rs. 14,244.4 Rs. 13,866.6 Rs. 17,591.4 US$ 214.0
Schedule of Future Minimum Rental Payments for Operating Leases	The future minimum lease payments as of March 31, 2023 were as follows: Due in fiscal year ending March 31: Operating leases (In millions, except for weighted averages) 2024 Rs. 15,081.4 US$ 183.5 2025 14,631.0 178.0 2026 14,527.2 176.8 2027 14,041.9 170.8 2028 13,236.8 161.1 Thereafter 71,890.1 874.7 Total lease payments Rs. 143,408.4 US$ 1,744.9 Less: imputed interest 45,749.5 556.6 Total operating lease liabilities 97,658.9 1,188.2 Weighted average remaining lease term (in years) 9.9 9.9 Weighted average discount rate 7.1 % 7.1 %
Movement in Provision for Reward Points	The movement in provision for credit card and debit card reward points as of March 31, 2022 and March 31, 2023 is as follows: As of March 31, 2022 2023 2023 (In millions) Opening provision of reward points Rs. 6,387.9 Rs. 6,359.1 US$ 77.4 Provision made during the year 4,651.3 5,537.3 67.4 Utilization/write back of provision (4,137.7 ) (4,901.3 ) (59.6 ) Effect of change in rate of accrual of reward points (542.4 ) (31.9 ) (0.4 ) Closing provision of reward points Rs. 6,359.1 Rs. 6,963.2 US$ 84.8

Related party transactions (Tab

Related party transactions (Tables)	12 Months Ended
	Mar. 31, 2023
Schedule of Related Party Transactions	Balances payable to related parties are as follows: As of March 31, 2022 2023 Principal owner Others Total Principal Others Total Total (In millions) Balances in non-interest-bearing deposits Rs. 20,695.1 Rs. 6,273.0 Rs. 26,968.1 Rs. 25,637.8 Rs. 8,715.1 Rs. 34,352.9 US$ 418.0 Balances in interest-bearing deposits 6,719.8 875.0 7,594.8 1,755.1 1,611.9 3,367.0 41.0 Accrued expenses and other liabilities 641.4 — 641.4 773.5 — 773.5 9.4 Total Rs. 28,056.3 Rs. 7,148.0 Rs. 35,204.3 Rs. 28,166.4 Rs. 10,327.0 Rs. 38,493.4 US$ 468.4 Balances receivable from related parties are as follows: As of March 31, 2022 2023 Principal Others Total Principal Others Total Total (In millions) Loans Rs. — Rs. 7.4 Rs. 7.4 Rs. — Rs. 7.5 Rs. 7.5 US$ 0.1 Other assets 656.5 1,498.7 2,155.2 748.0 2,167.3 2,915.3 35.5 Total Rs. 656.5 Rs. 1,506.1 Rs. 2,162.6 Rs. 748.0 Rs. 2,174.8 Rs. 2,922.8 US$ 35.6 Included in the determination of net income are the following significant transactions with related parties: Fiscal year ended March 31, 2021 2022 2023 Principal Others Total Principal Others Total Principal Others Total Total (In millions) Non-interest revenue-Fees Rs. 3,246.5 Rs. 19,801.6 Rs. 23,048.1 Rs. 4,639.3 Rs. 22,939.5 Rs. 27578.8 Rs. 5,888.2 Rs. 26,766.6 Rs. 32,654.8 US$ 397.3 Interest and Dividend revenue — 552.5 552.5 — 0.1 0.1 — 0.1 0.1 — Interest expense-Deposits (108.0 ) (171.3 ) (279.3 ) (204.3 ) (82.2 ) (286.5 ) (95.3 ) (606.1 ) (701.4 ) (8.5 ) Non-interest expense-Administrative and other (5,874.4 ) (2,856.3 ) (8,730.7 ) (7,182.4 ) (4,558.9 ) (11,741.3 ) (8,631.1 ) (5,524.8 ) (14,155.9 ) (172.2 ) Non-interest expense-Premises and equipment (24.3 ) (5.2 ) (29.5 ) (19.2 ) — (19.2 ) (15.6 ) — (15.6 ) (0.2 )

Earnings per equity share (Tabl

Earnings per equity share (Tables)	12 Months Ended
	Mar. 31, 2023
Weighted-average number of shares	As of March 31, 2021 2022 2023 Weighted average number of equity shares used in computing basic earnings per equity share 5,499,587,357 5,533,113,800 5,565,620,562 Effect of potential equity shares for stock options outstanding 23,890,989 30,366,023 21,552,766 Weighted average number of equity shares used in computing diluted earnings per equity share 5,523,478,346 5,563,479,823 5,587,173,328
Reconciliation of Earnings Per Share	The following are reconciliations of basic and diluted earnings per equity share and earnings per ADS. Fiscal years ended March 31, 2021 2022 2023 2023 Basic earnings per share Rs. 59.27 Rs. 69.76 Rs. 89.02 US$ 1.08 Effect of potential equity shares for stock options outstanding 0.25 0.38 0.34 0.01 Diluted earnings per share Rs. 59.02 Rs. 69.38 Rs. 88.68 US$ 1.07 Basic earnings per ADS Rs. 177.81 Rs. 209.28 Rs. 267.06 US$ 3.24 Effect of potential equity shares for stock options outstanding 0.75 1.14 1.02 0.03 Diluted earnings per ADS Rs. 177.06 Rs. 208.14 Rs. 266.04 US$ 3.21

Fair value measurement (Tables)

Fair value measurement (Tables)	12 Months Ended
	Mar. 31, 2023
Information about Changes in Fair Value of Level 3 Assets Pertaining to Instruments Carried at Fair Value	The following table summarizes certain additional information about changes in the fair value of Level 3 assets pertaining to instruments carried at fair value for the fiscal years ended March 31, 2022 and March 31, 2023: Particulars As of March 31, 2022 (In millions) Beginning balance at April 1, 2021 Rs. 161,163.9 Total gains or losses (realized/ unrealized) — Included in net income — — Included in other comprehensive income (2,841.2 ) Purchases/additions 77,995.6 Sales — Issuances — Settlements (92,423.6 ) Transfers into Level 3 — Transfers out of Level 3 — Foreign currency translation adjustment — Ending balance at March 31, 2022 Rs. 143,894.7 Total amount of gains/ (losses) included in net income attributable to change in unrealized gains/ (losses) relating to assets still held at reporting date Rs — Change in unrealized gains/ losses for the period included in other comprehensive income for assets held at the end of the reporting period Rs (3,055.8 ) Particulars As of March 31, 2023 (In millions) Beginning balance at April 1, 2022 Rs. 143,894.7 Total gains or losses (realized/unrealized) — Included in net income — — Included in other comprehensive income (2,776.3 ) Purchases/additions 110,969.4 Sales — Issuances — Settlements (103,652.2 ) Transfers into Level 3 — Transfers out of Level 3 — Foreign currency translation adjustment — Ending balance at March 31, 2023 Rs. 148,435.6 Total amount of gains/ (losses) included in net income attributable to change in unrealized gains/ (losses) relating to assets still held at reporting date Rs — Change in unrealized gains/ (losses) for the period included in other comprehensive income for assets held at the end of the reporting period Rs (1,867.6)
Investments
Fair Value Measured on Recurring Basis	The following table summarizes investments measured at fair value on a recurring basis as of March 31, 2022, segregated by the level of valuation inputs within the fair value hierarchy utilized to measure fair value: Fair Value Measurements Using Particulars Total Quoted prices in Significant other Significant (In millions) Trading account securities Rs. 53,199.5 Rs. 304.1 Rs. 52,895.4 Rs. — Securities available-for-sale 4,388,563.1 174,680.3 4,069,988.1 143,894.7 Equity securities ( ) 12,070.8 3,889.8 8,181.0 — Total Rs. 4,453,833.4 Rs. 178,874.2 Rs. 4,131,064.5 Rs. 143,894.7 ( ) Equity securities classified within other assets. The following table summarizes investments measured at fair value on a recurring basis as of March 31, 2023, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value: Fair Value Measurements Using Particulars Total Quoted prices in Significant other Significant (In millions) Trading account securities Rs. 135,831.1 Rs. 184.1 Rs. 135,647.0 Rs. — Securities available-for-sale 4,878,844.0 507,504.1 4,222,904.3 148,435.6 Equity securities ( ) 19,462.6 3,313.7 16,148.9 — Total Rs. 5,034,137.7 Rs. 511,001.9 Rs. 4,374,700.2 Rs. 148,435.6 Total US$ 61,250.0 US$ 6,217.3 US$ 53,226.7 US$ 1,806.0 ( ) Equity securities classified within other assets.
Derivative
Fair Value Measured on Recurring Basis	The following table summarizes derivative instruments measured at fair value on a recurring basis as of March 31, 2022, segregated by the level of valuation inputs within the fair value hierarchy: Fair Value Measurements Using Particulars Total Quoted prices in Significant other Significant (In millions) Derivative assets Rs. 80,202.3 Rs. — Rs. 80,202.3 Rs. — Derivative liabilities Rs. 74,819.2 Rs. — Rs. 74,819.2 Rs. — The following table summarizes derivative instruments measured at fair value on a recurring basis as of March 31, 2023, segregated by the level of valuation inputs within the fair value hierarchy: Fair Value Measurements Using Particulars Total Quoted prices in Significant other Significant (In millions) Derivative assets Rs. 121,749.4 Rs. — Rs. 121,749.4 Rs. — Derivative liabilities Rs. 98,783.5 Rs. — Rs. 98,783.5 Rs. —

Bank Overview - Additional Info

Bank Overview - Additional Information (Detail)	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Housing Development Finance Corporation Limited
Nature Of Business [Line Items]
Equity ownership interest of the bank's largest shareholder	20.90%	21%

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Mar. 31, 2023 Segment
Significant Accounting Policies [Line Items]
Reportable segments	3
Financial statements translation rate, Indian rupees (Rs.) equivalence of U.S. $1	82.19
HDFC Group [Member] | Minimum
Significant Accounting Policies [Line Items]
Percentage of voting rights in which bank consolidates subsidiary	50%
HDFC Group [Member] | Minimum | HDFC Bank Limited
Significant Accounting Policies [Line Items]
Bank voting rights	20%
HDFC Group [Member] | Maximum | HDFC Bank Limited
Significant Accounting Policies [Line Items]
Bank voting rights	50%

Property and Equipment Deprecia

Property and Equipment Depreciation Rate Over Estimated Useful Lives of Property and Equipment on Straight-Line Basis (Detail)	12 Months Ended
	Mar. 31, 2023
Premises
Property, Plant and Equipment [Line Items]
Rate of depreciation	1.67%
Software and systems
Property, Plant and Equipment [Line Items]
Rate of depreciation	20%
Equipment and furniture | Minimum
Property, Plant and Equipment [Line Items]
Rate of depreciation	10%
Equipment and furniture | Maximum
Property, Plant and Equipment [Line Items]
Rate of depreciation	33.33%

Cash and Due From Banks, and _2

Cash and Due From Banks, and Restricted Cash - Additional Information (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash	₨ 902,006.6	$ 10,974.7	₨ 780,004.8

Portfolio of Trading Securities

Portfolio of Trading Securities (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost	₨ 135,480.2	$ 1,648.4	₨ 53,728.6
Gross Unrealized Gains	376.6	4.5	187.8
Gross Unrealized Losses	25.7	0.3	716.9
Fair Value	135,831.1	$ 1,652.6	53,199.5
Debt Securities
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost	127,313.8		31,795.1
Gross Unrealized Gains	122.6		59.6
Gross Unrealized Losses	25.7		27.9
Fair Value	127,410.7		31,826.8
Debt Securities | Government of India securities
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost	106,952.3		28,159.7
Gross Unrealized Gains	103.6		57.7
Gross Unrealized Losses	23.2		21.9
Fair Value	107,032.7		28,195.5
Debt Securities | Other corporate/financial institution securities
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost	20,361.5		3,635.4
Gross Unrealized Gains	19		1.9
Gross Unrealized Losses	2.5		6
Fair Value	20,378		3,631.3
Other securities (including mutual fund units)
Schedule of Trading Securities and Other Trading Assets [Line Items]
Amortized Cost	8,166.4		21,933.5
Gross Unrealized Gains	254		128.2
Gross Unrealized Losses	0		689
Fair Value	₨ 8,420.4		₨ 21,372.7

Portfolio of AFS Debt Securitie

Portfolio of AFS Debt Securities (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	₨ 4,979,205.7	$ 60,581.7	₨ 4,416,934.2
Gross Unrealized Gains	6,552.9	79.7	22,472.3
Gross Unrealized Losses	106,914.6	1,300.8	50,843.4
Fair Value	4,878,844	59,360.6	4,388,563.1
Debt securities, other than asset and mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	4,828,914.5		4,273,955.4
Gross Unrealized Gains	6,497.7		20,952.7
Gross Unrealized Losses	105,021.4		50,262.6
Fair Value	4,730,390.8	$ 57,554.3	4,244,645.5
Debt securities, other than asset and mortgage-backed securities | Government of India securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	3,860,431.8		3,226,917.6
Gross Unrealized Gains	4,656.4		10,995.6
Gross Unrealized Losses	80,344.5		42,946.3
Fair Value	3,784,743.7		3,194,966.9
Debt securities, other than asset and mortgage-backed securities | State government securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	428,980.9		429,146.8
Gross Unrealized Gains	1,322.5		4,395.9
Gross Unrealized Losses	15,604.8		5,865.9
Fair Value	414,698.6		427,676.8
Debt securities, other than asset and mortgage-backed securities | Government securities outside India
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	819		2,279.2
Gross Unrealized Gains	0		0
Gross Unrealized Losses	21.8		3.4
Fair Value	797.2		2,275.8
Debt securities, other than asset and mortgage-backed securities | Credit Substitutes
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	511,161.4		578,922.3
Gross Unrealized Gains	505.4		5,381.4
Gross Unrealized Losses	8,479		1,283.5
Fair Value	503,187.8		583,020.2
Debt securities, other than asset and mortgage-backed securities | Other corporate/financial institution bonds
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	27,521.4		36,689.5
Gross Unrealized Gains	13.4		179.8
Gross Unrealized Losses	571.3		163.5
Fair Value	26,963.5		36,705.8
Mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	19.3		24.2
Gross Unrealized Gains	0		0
Gross Unrealized Losses	1.8		1.3
Fair Value	17.5		22.9
Asset-backed securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	150,271.9		142,954.6
Gross Unrealized Gains	55.2		1,519.6
Gross Unrealized Losses	1,891.4		579.5
Fair Value	148,435.7		143,894.7
Securities with gross unrealized losses
Schedule of Available-for-sale Securities [Line Items]
Fair Value	3,220,573.8		1,791,389
Securities with gross unrealized gains
Schedule of Available-for-sale Securities [Line Items]
Fair Value	₨ 1,658,270.2		₨ 2,597,174.1

Investments, Available for Sale

Investments, Available for Sale Debt Securities - Additional Information (Detail) ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)	Mar. 31, 2023 USD ($)
Schedule of Available-for-sale Securities [Line Items]
Investments available for sale, at fair value, restricted investments	₨ 2,070,953.6		₨ 1,648,213.8	$ 25,197.1
Debt Securities, Available-for-sale, Unrealized Loss	95,971.1
Net allowance for credit losses	70.9	$ 0.9	(2,915.1)
Available-for-Sale Debt Securities
Schedule of Available-for-sale Securities [Line Items]
Available for sale investments, amount eligible towards the Bank's statutory liquidity reserve requirements	4,199,442.3		3,622,643.8	51,094.3
Investments available for sale, at fair value, restricted investments	2,070,953.6		1,648,213.8	$ 25,197.1
Available-for-Sale Debt Securities | Accounting ​Guidance​ [Member]
Schedule of Available-for-sale Securities [Line Items]
Net allowance for credit losses	70.9		₨ 0
HDB Debt Securities Other Than Asset And Mortgage Backed Securities | Government Issued or Backed Securities
Schedule of Available-for-sale Securities [Line Items]
Net allowance for credit losses	₨ 0
Mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Average credit rating	AAA	AAA
Asset-backed securities
Schedule of Available-for-sale Securities [Line Items]
Average credit rating	AAA	AAA

Gross Unrealized Losses and Fai

Gross Unrealized Losses and Fair Value of Available for Sale Debt Securities (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Gain (Loss) on Securities [Line Items]
Less Than 12 Months Fair Value	₨ 1,500,675.9	$ 18,258.6	₨ 756,202.7
Less Than 12 Months Unrealized Losses	19,859.2	241.6	10,558.3
12 Months or Greater Fair Value	1,719,897.9	20,925.9	1,035,186.3
12 Months or Greater Unrealized Losses	87,055.4	1,059.2	40,285.1
Fair Value	3,220,573.8	39,184.5	1,791,389
Unrealized Losses	106,914.6	$ 1,300.8	50,843.4
Debt securities, other than asset and mortgage-backed securities
Gain (Loss) on Securities [Line Items]
Less Than 12 Months Fair Value	1,390,130.2		730,622.5
Less Than 12 Months Unrealized Losses	18,781.9		10,246.4
12 Months or Greater Fair Value	1,693,782.3		1,007,543.6
12 Months or Greater Unrealized Losses	86,239.5		40,016.2
Fair Value	3,083,912.5		1,738,166.1
Unrealized Losses	105,021.4		50,262.6
Debt securities, other than asset and mortgage-backed securities | Government of India securities
Gain (Loss) on Securities [Line Items]
Less Than 12 Months Fair Value	1,038,004.8		447,360.3
Less Than 12 Months Unrealized Losses	12,622.5		7,893.5
12 Months or Greater Fair Value	1,266,775.4		838,788.4
12 Months or Greater Unrealized Losses	67,722		35,052.8
Fair Value	2,304,780.2		1,286,148.7
Unrealized Losses	80,344.5		42,946.3
Debt securities, other than asset and mortgage-backed securities | Credit Substitutes
Gain (Loss) on Securities [Line Items]
Less Than 12 Months Fair Value	254,023.6		118,798.2
Less Than 12 Months Unrealized Losses	3,771		972.4
12 Months or Greater Fair Value	152,702.6		37,138.9
12 Months or Greater Unrealized Losses	4,708		311.1
Fair Value	406,726.2		155,937.1
Unrealized Losses	8,479		1,283.5
Debt securities, other than asset and mortgage-backed securities | Other corporate/financial institution bonds
Gain (Loss) on Securities [Line Items]
Less Than 12 Months Fair Value	21,596.9		15,823.3
Less Than 12 Months Unrealized Losses	443		163.5
12 Months or Greater Fair Value	4,205.1		0
12 Months or Greater Unrealized Losses	128.3		0
Fair Value	25,802		15,823.3
Unrealized Losses	571.3		163.5
Debt securities, other than asset and mortgage-backed securities | State government securities
Gain (Loss) on Securities [Line Items]
Less Than 12 Months Fair Value	75,707.7		146,365
Less Than 12 Months Unrealized Losses	1,923.6		1,213.6
12 Months or Greater Fair Value	270,099.2		131,616.3
12 Months or Greater Unrealized Losses	13,681.2		4,652.3
Fair Value	345,806.9		277,981.3
Unrealized Losses	15,604.8		5,865.9
Debt securities, other than asset and mortgage-backed securities | Government securities outside India
Gain (Loss) on Securities [Line Items]
Less Than 12 Months Fair Value	797.2		2,275.7
Less Than 12 Months Unrealized Losses	21.8		3.4
12 Months or Greater Fair Value	0		0
12 Months or Greater Unrealized Losses	0		0
Fair Value	797.2		2,275.7
Unrealized Losses	21.8		3.4
Mortgage-backed securities
Gain (Loss) on Securities [Line Items]
Less Than 12 Months Fair Value	0		23
Less Than 12 Months Unrealized Losses	0		1.3
12 Months or Greater Fair Value	17.5		0
12 Months or Greater Unrealized Losses	1.8		0
Fair Value	17.5		23
Unrealized Losses	1.8		1.3
Asset-backed securities
Gain (Loss) on Securities [Line Items]
Less Than 12 Months Fair Value	110,545.7		25,557.2
Less Than 12 Months Unrealized Losses	1,077.3		310.6
12 Months or Greater Fair Value	26,098.1		27,642.7
12 Months or Greater Unrealized Losses	814.1		268.9
Fair Value	136,643.8		53,199.9
Unrealized Losses	1,891.4		579.5
Other securities (including mutual fund units)
Gain (Loss) on Securities [Line Items]
Less Than 12 Months Fair Value	0		0
Less Than 12 Months Unrealized Losses	0		0
12 Months or Greater Fair Value	0		0
12 Months or Greater Unrealized Losses	0		0
Fair Value	0		0
Unrealized Losses	₨ 0		₨ 0

Investments, Available for Sa_2

Investments, Available for Sale Debt Securities -Summary of Allowances for Available for sale debt Securities (Detail) ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Allowance for credit losses, beginning of the period	₨ 0	$ 0	₨ 2,915.1
Write- offs	0	0	0
Net allowance for credit losses	70.9	0.9	(2,915.1)
Allowance for credit losses, end of the period	70.9	$ 0.9	0
Credit Substitutes
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Allowance for credit losses, beginning of the period	0		2,915.1
Write- offs	0		0
Net allowance for credit losses	70.9		(2,915.1)
Allowance for credit losses, end of the period	70.9		0
Other corporate/financial institution bonds
Debt Securities, Available-for-sale, Allowance for Credit Loss [Line Items]
Allowance for credit losses, beginning of the period	0		0
Write- offs	0		0
Net allowance for credit losses	0		0
Allowance for credit losses, end of the period	₨ 0		₨ 0

Contractual Residual Maturity o

Contractual Residual Maturity of Available for Sale Debt Securities Other Than Asset and Mortgage Backed Securities (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Fair Value
Total	₨ 4,878,844	$ 59,360.6	₨ 4,388,563.1
Debt securities, other than asset and mortgage-backed securities
Amortized Cost
Within one year	1,092,231.4
Over one year through five years	1,398,521.5
Over five years through ten years	1,590,115.9
Over ten years	748,045.7
Amortized Cost	4,828,914.5
Fair Value
Within one year	1,088,924.4	13,248.8
Over one year through five years	1,373,721.5	16,714
Over five years through ten years	1,545,947	18,809.4
Over ten years	721,797.9	8,782.1
Total	₨ 4,730,390.8	$ 57,554.3	₨ 4,244,645.5

Contractual Residual Maturity_2

Contractual Residual Maturity of Available for Sale Mortgage-Backed and Asset-Backed Debt Securities (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Fair Value
Total	₨ 4,878,844	$ 59,360.6	₨ 4,388,563.1
Asset and Mortgage Backed Securities
Amortized Cost
Within one year	67,028.7
Over one year through five years	82,694.3
Over five years through ten years	471.2
Over ten years	97
Amortized Cost	150,291.2
Fair Value
Within one year	66,150.7	804.9
Over one year through five years	81,730.2	994.4
Over five years through ten years	474.5	5.8
Over ten years	97.8	1.2
Total	₨ 148,453.2	$ 1,806.3

Gross Realized Gains and Gross

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
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)	Mar. 31, 2021 INR (₨)
Schedule of Available-for-sale Securities [Line Items]
Gross realized gains on sale	₨ 259.1	$ 3.2	₨ 18,604.5	₨ 56,439.4
Gross realized losses on sale	(979.4)	(12)	(1,858.7)	(514.2)
Realized gains/ (losses), net	(720.3)	(8.8)	16,745.8	55,925.2
Dividends and interest	304,566.7	3,705.6	240,943	226,690.9
Total	₨ 303,846.4	$ 3,696.8	₨ 257,688.8	₨ 282,616.1

Investments, Held to Maturity -

Investments, Held to Maturity - Additional Information (Detail) - INR (₨) ₨ in Millions	Mar. 31, 2023	Mar. 31, 2022
Held to maturity securities	₨ 0	₨ 0

Fair Value of Credit Substitute

Fair Value of Credit Substitutes by Type of Instrument (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Schedule of Available-for-sale Securities [Line Items]
Fair Value	₨ 4,878,844	$ 59,360.6	₨ 4,388,563.1
Debt securities, other than asset and mortgage-backed securities | Credit Substitutes
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	511,161.4	6,219.3	578,922.3
Fair Value	503,187.8	$ 6,122.3	583,020.2
Debt securities, other than asset and mortgage-backed securities | Credit Substitutes | Debentures
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	510,880.4		577,377
Fair Value	503,187.6		581,551.5
Debt securities, other than asset and mortgage-backed securities | Credit Substitutes | Preference shares
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	281		77.1
Fair Value	0.2		0.5
Debt securities, other than asset and mortgage-backed securities | Credit Substitutes | Commercial paper
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	0		1,468.2
Fair Value	₨ 0		₨ 1,468.2

Fair Value of Credit Substitu_2

Fair Value of Credit Substitutes (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Schedule of Available-for-sale Securities [Line Items]
Pass	₨ 503,187.8	$ 6,122.3	₨ 583,020.2
Non-performing—gross balance	0	0	0
Less: Non-performing losses	0	0	0
Non-performing credit substitutes, net	0	0	0
Total credit substitutes, net	₨ 503,187.8	$ 6,122.3	₨ 583,020.2

Impaired Credit Substitutes (De

Impaired Credit Substitutes (Detail) - Debt securities, other than asset and mortgage-backed securities ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)	Mar. 31, 2023 USD ($)
Schedule of Available-for-sale Securities [Line Items]
Average non-performing credit substitutes	₨ 0	$ 0	₨ 0
Interest income recognized on non-performing credit substitutes	0	$ 0	0
Credit Substitutes
Schedule of Available-for-sale Securities [Line Items]
Gross non-performing credit substitutes	0		0	$ 0
Credit Substitutes by Industry
Schedule of Available-for-sale Securities [Line Items]
Gross non-performing credit substitutes	₨ 0		₨ 0	$ 0

Repurchase and Resell Agreeme_2

Repurchase and Resell Agreements - Additional Information (Detail) ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Repurchase Agreement and Resale Agreement Counterparty [Line Items]
Securities purchased under agreements to resell	₨ 455,275.4	$ 5,539.3	₨ 373,053.3
Securities sold under repurchase agreements, amount outstanding	₨ 0	$ 0	₨ 151,844.9
Maximum
Repurchase Agreement and Resale Agreement Counterparty [Line Items]
Securities purchased under agreements to resell, maturity (days)	14 days
Securities sold under repurchase agreements, maturity (days)	14 days

Loans - Additional Information

Loans - Additional Information (Detail) ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)	Mar. 31, 2023 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans provided as collateral for borrowings	₨ 1,927,514.2		₨ 372,013.8	$ 23,451.9
Purchased financing receivable outstanding	1,024,684.4		836,172.8
Loans receivable restructured due to unexpected event	86,100	$ 1,100	229,800
Retail Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable restructured due to unexpected event	220,000		81,400
Wholesale Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans receivable restructured due to unexpected event	₨ 9,800		₨ 4,700
Current Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of days past due up to which loans	90 days			90 days
Crop related agricultural loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of days past due up to which loans	366 days			366 days
HDB Retail Business Banking [Member] | Retail Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
TDR modifications carrying value	₨ 0

Loans by Facility (Detail)

Loans by Facility (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)	Mar. 31, 2022 USD ($)	Mar. 31, 2021 INR (₨)	Mar. 31, 2020 INR (₨)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	₨ 17,418,092.4	$ 211,924.7	₨ 14,409,544
Less: Allowance for credit losses	365,164.5	4,443	372,671.8	$ 4,534.3	₨ 343,528.7	₨ 198,833.2
Total	17,052,927.9	207,481.7	14,036,872.2
Auto loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: Allowance for credit losses	33,835.5		41,769.4		39,396.1	19,219
Personal loans/Credit card
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: Allowance for credit losses	99,634.4		111,566.4		110,081	47,097.1
Retail Business Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: Allowance for credit losses	63,974.8		49,055		42,288.4	32,860.3
Commercial vehicle and construction equipment finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: Allowance for credit losses	31,130.6		31,750.9		26,356.7	20,463.4
Housing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: Allowance for credit losses	3,269.9		2,692.2		4,578	1,700.7
Other Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Less: Allowance for credit losses	72,012.4		61,437		49,229.2	37,864.3
Retail Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	11,506,580.3	139,999.7	9,310,534.7
Retail Loans | Auto loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,221,097.6	14,857	1,042,793
Retail Loans | Personal loans/Credit card
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	2,782,828.5	33,858.5	2,341,971.8
Retail Loans | Retail Business Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	3,378,625.2	41,107.5	2,617,087.1
Retail Loans | Commercial vehicle and construction equipment finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,285,887.8	15,645.3	951,066
Retail Loans | Housing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,020,901.6	12,421.2	830,882.4
Retail Loans | Other Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,817,239.6	22,110.2	1,526,734.4
Wholesale loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	5,911,512.1	$ 71,925	5,099,009.3
Less: Allowance for credit losses	₨ 61,306.9		₨ 74,400.9		₨ 71,599.3	₨ 39,628.4

Maturity of Gross Loans (Detail

Maturity of Gross Loans (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	₨ 17,418,092.4	$ 211,924.7	₨ 14,409,544
Wholesale loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	5,911,512.1	71,925	5,099,009.3
Retail Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	11,506,580.3	139,999.7	₨ 9,310,534.7
Gross Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Within one year	4,653,956.6
Over one year through five years	10,363,636.9
Over five years	2,400,498.9
Total gross loans	17,418,092.4	211,924.7
Gross Loans | Wholesale loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Within one year	1,790,721.1
Over one year through five years	2,966,781.3
Over five years	1,154,009.7
Total gross loans	5,911,512.1	71,925
Gross Loans | Retail Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Within one year	2,863,235.5
Over one year through five years	7,396,855.6
Over five years	1,246,489.2
Total gross loans	₨ 11,506,580.3	$ 139,999.7

Loan Delinquency and Non-Accrua

Loan Delinquency and Non-Accrual Loans (Detail) ₨ in Millions, $ in Millions		Mar. 31, 2023 INR (₨)		Mar. 31, 2023 USD ($)		Mar. 31, 2022 INR (₨)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans		₨ 17,418,092.4		$ 211,924.7		₨ 14,409,544
Finance receivable on non-accrual status		200,708.8		2,442		197,269.5
Retail Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans		11,506,580.3		139,999.7		9,310,534.7
Retail Loans | Auto loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans		1,221,097.6		14,857		1,042,793
Finance receivable on non-accrual status		15,941.6				20,441.6
Retail Loans | Personal loans/Credit card
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans		2,782,828.5		33,858.5		2,341,971.8
Finance receivable on non-accrual status		22,770.1				28,057.5
Retail Loans | Retail Business Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans		3,378,625.2		41,107.5		2,617,087.1
Finance receivable on non-accrual status		43,937.8				35,820.2
Retail Loans | Commercial vehicle and construction equipment finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans		1,285,887.8		15,645.3		951,066
Finance receivable on non-accrual status		21,823.8				25,091.5
Retail Loans | Housing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans		1,020,901.6		12,421.2		830,882.4
Finance receivable on non-accrual status		5,900.3				6,478.4
Retail Loans | Other Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans		1,817,239.6		22,110.2		1,526,734.4
Finance receivable on non-accrual status		56,822.9				49,459.2
Wholesale loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans		5,911,512.1		71,925		5,099,009.3
Finance receivable on non-accrual status		33,512.3				31,921.1
Financing Receivable, 31 to 90 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans		100,768.4		1,226		102,237.7
Financing Receivable, 31 to 90 Days Past Due | Retail Loans | Auto loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans		5,738.3				6,536.5
Financing Receivable, 31 to 90 Days Past Due | Retail Loans | Personal loans/Credit card
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans		20,871.1				27,433.8
Financing Receivable, 31 to 90 Days Past Due | Retail Loans | Retail Business Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans		21,241				18,242.9
Financing Receivable, 31 to 90 Days Past Due | Retail Loans | Commercial vehicle and construction equipment finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans		15,089.3				20,263
Financing Receivable, 31 to 90 Days Past Due | Retail Loans | Housing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans		3,916				3,296.3
Financing Receivable, 31 to 90 Days Past Due | Retail Loans | Other Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans		30,007.7				18,009.8
Financing Receivable, 31 to 90 Days Past Due | Wholesale loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans		3,905				8,455.4
Non-accrual/ 91 days or more past due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans		200,708.8		2,442		197,269.5
Non-accrual/ 91 days or more past due | Retail Loans | Auto loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans		15,941.6				20,441.6
Non-accrual/ 91 days or more past due | Retail Loans | Personal loans/Credit card
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans		22,770.1				28,057.5
Non-accrual/ 91 days or more past due | Retail Loans | Retail Business Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans		43,937.8				35,820.2
Non-accrual/ 91 days or more past due | Retail Loans | Commercial vehicle and construction equipment finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans		21,823.8				25,091.5
Non-accrual/ 91 days or more past due | Retail Loans | Housing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans		5,900.3				6,478.4
Non-accrual/ 91 days or more past due | Retail Loans | Other Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans		56,822.9				49,459.2
Non-accrual/ 91 days or more past due | Wholesale loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans		33,512.3				31,921.1
Total current
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	[2]	17,116,615.2	[1]	$ 208,256.7	[1]	14,110,036.8	[3]
Total current | Retail Loans | Auto loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	[2]	1,199,417.7	[1]			1,015,814.9	[3]
Total current | Retail Loans | Personal loans/Credit card
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	[2]	2,739,187.3	[1]			2,286,480.5	[3]
Total current | Retail Loans | Retail Business Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	[2]	3,313,446.4	[1]			2,563,024	[3]
Total current | Retail Loans | Commercial vehicle and construction equipment finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	[2]	1,248,974.7	[1]			905,711.5	[3]
Total current | Retail Loans | Housing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	[2]	1,011,085.3	[1]			821,107.7	[3]
Total current | Retail Loans | Other Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	[2]	1,730,409	[1]			1,459,265.4	[3]
Total current | Wholesale loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	[2]	₨ 5,874,094.8	[1]			₨ 5,058,632.8	[3]
[1]Includes crop-related agricultural loans with days past due less than 366 as they are not considered as non-performing of Rs. 31.8 billion.[2]Loans up to 30 days past due are considered current.[3]Includes crop-related agricultural loans with days past due less than 366 as they are not considered as non-performing of Rs. 34.2 billion.

Summary of Gross Loans Originat

Summary of Gross Loans Origination and Internally Assigned Credit Risk Ratings (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Retail Loans
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	₨ 510,417.8	$ 6,210.2	₨ 378,896.1
2018	320,947.2	3,904.9	259,729.3
2019	507,416.1	6,173.7	496,836.7
2020	775,037.4	9,429.8	808,003.9
2021	1,818,009	22,119.6	1,230,531.7
2022	3,600,410.4	43,806	3,233,675.4
Revolving Loans	3,658,893.5	44,517.5	2,560,650.4
Revolving loans converted to term loans	315,448.9	3,838	342,211.2
Total	11,506,580.3	139,999.7	9,310,534.7
Retail Loans | Auto loans
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	15,517.1		9,312.3
2018	39,749.6		45,501.4
2019	94,007.2		94,617.1
2020	163,319		175,929.5
2021	310,066.9		255,269.2
2022	526,442.7		455,776.3
Revolving Loans	71,995.1		6,387.2
Revolving loans converted to term loans	0		0
Total	1,221,097.6		1,042,793
Retail Loans | Personal loans/Credit card
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	2,778		1,576.1
2018	22,113.3		15,231
2019	89,549.8		71,661.5
2020	158,430.1		233,528.5
2021	494,010.7		340,457.8
2022	1,209,127.8		948,999.7
Revolving Loans	491,369.9		388,306
Revolving loans converted to term loans	315,448.9		342,211.2
Total	2,782,828.5		2,341,971.8
Retail Loans | Retail Business Banking
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	80,434.7		56,009.1
2018	61,911.5		82,695.8
2019	97,219.4		100,790.9
2020	189,834.9		154,562.7
2021	413,863.3		309,553.8
2022	600,365.7		570,099.2
Revolving Loans	1,934,995.7		1,343,375.6
Revolving loans converted to term loans	0		0
Total	3,378,625.2		2,617,087.1
Retail Loans | Commercial vehicle and construction equipment finance
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	4,379.3		2,048.2
2018	22,200.6		17,414
2019	53,522		75,642.7
2020	97,469.8		133,233.7
2021	280,514.9		189,444.8
2022	630,169.3		427,085.4
Revolving Loans	197,631.9		106,197.2
Revolving loans converted to term loans	0		0
Total	1,285,887.8		951,066
Retail Loans | Housing loans
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	398,743.8		302,700.9
2018	161,654		86,186.2
2019	143,395.8		128,811.4
2020	120,395		48,992.2
2021	167,253.7		513.4
2022	29,459.3		263,678.3
Revolving Loans	0		0
Revolving loans converted to term loans	0		0
Total	1,020,901.6		830,882.4
Retail Loans | Other Retail
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	8,564.9		7,249.5
2018	13,318.2		12,700.9
2019	29,721.9		25,313.1
2020	45,588.6		61,757.3
2021	152,299.5		135,292.7
2022	604,845.6		568,036.5
Revolving Loans	962,900.9		716,384.4
Revolving loans converted to term loans	0		0
Total	1,817,239.6		1,526,734.4
Retail Loans | Performing | Auto loans
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	14,387.2		8,466.2
2018	37,425.2		42,634.8
2019	90,148.4		89,161.9
2020	160,443.6		169,606.1
2021	308,076.9		252,295.7
2022	525,693.8		455,114.6
Revolving Loans	68,980.9		5,072.1
Revolving loans converted to term loans	0		0
Total	1,205,156		1,022,351.4
Retail Loans | Performing | Personal loans/Credit card
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	2,431.4		1,374.4
2018	20,673.2		14,320.8
2019	86,038.7		67,477.1
2020	155,911.2		225,561.4
2021	490,598.8		336,526.1
2022	1,206,873.5		947,277
Revolving Loans	482,500.3		381,900.4
Revolving loans converted to term loans	315,031.3		339,477.1
Total	2,760,058.4		2,313,914.3
Retail Loans | Performing | Retail Business Banking
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	75,583.1		52,347.2
2018	58,914.7		78,959.8
2019	94,372.2		97,361.4
2020	185,698.6		151,964
2021	412,305		306,673
2022	600,147.3		569,687
Revolving Loans	1,907,666.5		1,324,274.5
Revolving loans converted to term loans	0		0
Total	3,334,687.4		2,581,266.9
Retail Loans | Performing | Commercial vehicle and construction equipment finance
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	3,981.3		1,837.4
2018	19,618.5		16,022.5
2019	49,030.6		69,418.2
2020	92,773.8		125,223.1
2021	277,461.6		185,561
2022	629,405.5		426,434.1
Revolving Loans	191,792.7		101,478.2
Revolving loans converted to term loans	0		0
Total	1,264,064		925,974.5
Retail Loans | Performing | Housing loans
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	394,712.3		301,103.3
2018	160,447.9		85,682.1
2019	143,037		127,339.2
2020	120,214.8		46,798.3
2021	167,130.4		0.6
2022	29,458.9		263,480.5
Revolving Loans	0		0
Revolving loans converted to term loans	0		0
Total	1,015,001.3		824,404
Retail Loans | Performing | Other Retail
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	5,564.3		4,260.4
2018	10,063.3		11,266.3
2019	18,382		20,843.1
2020	42,416.7		51,074.6
2021	150,038.1		131,647.7
2022	603,873.8		567,032.4
Revolving Loans	930,078.5		691,150.7
Revolving loans converted to term loans	0		0
Total	1,760,416.7		1,477,275.2
Retail Loans | Non-performing | Auto loans
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	1,129.9		846.1
2018	2,324.4		2,866.6
2019	3,858.8		5,455.2
2020	2,875.4		6,323.4
2021	1,990		2,973.5
2022	748.9		661.7
Revolving Loans	3,014.2		1,315.1
Revolving loans converted to term loans	0		0
Total	15,941.6		20,441.6
Retail Loans | Non-performing | Personal loans/Credit card
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	346.6		201.7
2018	1,440.1		910.2
2019	3,511.1		4,184.4
2020	2,518.9		7,967.1
2021	3,411.9		3,931.7
2022	2,254.3		1,722.7
Revolving Loans	8,869.6		6,405.6
Revolving loans converted to term loans	417.6		2,734.1
Total	22,770.1		28,057.5
Retail Loans | Non-performing | Retail Business Banking
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	4,851.6		3,661.9
2018	2,996.8		3,736
2019	2,847.2		3,429.5
2020	4,136.3		2,598.7
2021	1,558.3		2,880.8
2022	218.4		412.2
Revolving Loans	27,329.2		19,101.1
Revolving loans converted to term loans	0		0
Total	43,937.8		35,820.2
Retail Loans | Non-performing | Commercial vehicle and construction equipment finance
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	398		210.8
2018	2,582.1		1,391.5
2019	4,491.4		6,224.5
2020	4,696		8,010.6
2021	3,053.3		3,883.8
2022	763.8		651.3
Revolving Loans	5,839.2		4,719
Revolving loans converted to term loans	0		0
Total	21,823.8		25,091.5
Retail Loans | Non-performing | Housing loans
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	4,031.5		1,597.6
2018	1,206.1		504.1
2019	358.8		1,472.2
2020	180.2		2,193.9
2021	123.3		512.8
2022	0.4		197.8
Revolving Loans	0		0
Revolving loans converted to term loans	0		0
Total	5,900.3		6,478.4
Retail Loans | Non-performing | Other Retail
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	3,000.6		2,989.1
2018	3,254.9		1,434.6
2019	11,339.9		4,470
2020	3,171.9		10,682.7
2021	2,261.4		3,645
2022	971.8		1,004.1
Revolving Loans	32,822.4		25,233.7
Revolving loans converted to term loans			0
Total	56,822.9		49,459.2
Wholesale loans
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	137,178.9	1,669	5,859.4
2018	138,901.5	1,690	194,108.7
2019	321,892.8	3,916.4	206,701.5
2020	712,836.2	8,673	423,342.8
2021	1,257,010.8	15,294	1,011,211.4
2022	1,472,089.3	17,910.8	2,245,121.3
Revolving Loans	1,871,602.6	22,771.7	1,012,664.2
Total	5,911,512.1	$ 71,925	5,099,009.3
Wholesale loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	130,723.1		5,289.7
2018	135,400.3		186,145.4
2019	321,191		195,703.7
2020	708,309		421,349.1
2021	1,244,766.9		1,006,687.4
2022	1,471,254.9		2,232,372.3
Revolving Loans	1,841,015.5		984,145.8
Total	5,852,660.7		5,031,693.4
Wholesale loans | Labelled
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	2,625.3		0
2018	1,586.9		3,297.2
2019	635.7		5,164.1
2020	4,200.8		1,632.6
2021	5,946.5		4,045
2022	795.3		11,447.4
Revolving Loans	9,548.6		9,808.5
Total	25,339.1		35,394.8
Wholesale loans | Non-performing
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	3,830.5		569.7
2018	1,914.3		4,666.1
2019	66.1		5,833.7
2020	326.4		361.1
2021	6,297.4		479
2022	39.1		1,301.6
Revolving Loans	21,038.5		18,709.9
Total	₨ 33,512.3		₨ 31,921.1

Non-performing Loans (Detail)

Non-performing Loans (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-performing loans	₨ 200,708.8	$ 2,442	₨ 197,269.5
Agri Production - Food
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-performing loans	28,222.2	343.4	23,569.7
Consumer Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-performing loans	34,684.8	422	35,554.7
Road Transportion
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-performing loans	11,505	140	12,961.6
Retail Trade
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-performing loans	15,044.4	183	15,124.1
Agri-Allied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-performing loans	13,426.1	163.4	13,255
Others (none greater than 5% of non-performing loans)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-performing loans	87,795.2	1,068.2	86,452.1
Consumer Services [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-performing loans	₨ 10,031.1	$ 122	₨ 10,352.3

Summary Information Relating to

Summary Information Relating to Non-performing Loans (Detail) Loans (Detail) ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)	Mar. 31, 2021 INR (₨)
Gross Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest income recognized on non-performing loans	₨ 7,738	$ 94.1	₨ 11,881	₨ 7,025.3

Allowance for Credit Losses (De

Allowance for Credit Losses (Detail) ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)		Mar. 31, 2023 USD ($)		Mar. 31, 2022 INR (₨)		Mar. 31, 2021 INR (₨)		Mar. 31, 2023 USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses, beginning of the period	₨ 372,671.8		$ 4,534.3		₨ 343,528.7		₨ 198,833.2
Write-offs	(137,863.7)		(1,677.4)		(134,017.8)		(119,470.7)
Net allowance for credit losses	130,356.4	[1]	1,586.1	[1]	163,160.9	[2]	183,153.2	[3]
Allowance for credit losses, end of the period	365,164.5		$ 4,443		372,671.8		343,528.7
Allowance for credit losses:
Allowance individually evaluated for impairment	31,696.6				38,454.1		36,933.6		$ 385.7
Allowance collectively evaluated for impairment	333,467.9				334,217.7		306,595.1		4,057.3
Loans:
Loans individually evaluated for impairment	37,061.8				44,738.1		46,553.7		450.9
Loans collectively evaluated for impairment	17,381,030.6				14,364,805.9		11,997,164.2		$ 211,473.8
Impact of ASC 326 Adoption
Financing Receivable, Allowance for Credit Loss [Line Items]
Impact of adopting ASC 326							81,013
Auto loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses, beginning of the period	41,769.4				39,396.1		19,219
Write-offs	(10,456)				(19,376.9)		(13,263.5)
Net allowance for credit losses	2,522.1	[1]			21,750.2	[2]	23,559.7	[3]
Allowance for credit losses, end of the period	33,835.5				41,769.4		39,396.1
Allowance for credit losses:
Allowance individually evaluated for impairment	4.6				18.4		34.7
Allowance collectively evaluated for impairment	33,830.9				41,751		39,361.4
Loans:
Loans individually evaluated for impairment	16.4				31.5		49.5
Loans collectively evaluated for impairment	1,221,081.2				1,042,761.5		964,003.7
Auto loans | Impact of ASC 326 Adoption
Financing Receivable, Allowance for Credit Loss [Line Items]
Impact of adopting ASC 326							9,880.9
Personal loans/Credit card
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses, beginning of the period	111,566.4				110,081		47,097.1
Write-offs	(88,744.9)				(74,500.8)		(61,571.8)
Net allowance for credit losses	76,812.9	[1]			75,986.2	[2]	86,464.6	[3]
Allowance for credit losses, end of the period	99,634.4				111,566.4		110,081
Allowance for credit losses:
Allowance individually evaluated for impairment	0				6.5		4
Allowance collectively evaluated for impairment	99,634.4				111,559.9		110,077
Loans:
Loans individually evaluated for impairment	0.8				29.4		4.2
Loans collectively evaluated for impairment	2,782,827.7				2,341,942.4		2,042,723
Personal loans/Credit card | Impact of ASC 326 Adoption
Financing Receivable, Allowance for Credit Loss [Line Items]
Impact of adopting ASC 326							38,091.1
Retail Business Banking
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses, beginning of the period	49,055				42,288.4		32,860.3
Write-offs	(3,987.8)				(3,027.7)		(14,951.6)
Net allowance for credit losses	18,907.6	[1]			9,794.3	[2]	20,432.2	[3]
Allowance for credit losses, end of the period	63,974.8				49,055		42,288.4
Allowance for credit losses:
Allowance individually evaluated for impairment	2,320.3				2,651.4		3,540.7
Allowance collectively evaluated for impairment	61,654.5				46,403.6		38,747.7
Loans:
Loans individually evaluated for impairment	2,782				2,651.4		3,560.8
Loans collectively evaluated for impairment	3,375,843.2				2,614,435.7		2,004,285.1
Retail Business Banking | Impact of ASC 326 Adoption
Financing Receivable, Allowance for Credit Loss [Line Items]
Impact of adopting ASC 326							3,947.5
Commercial vehicle and construction equipment finance
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses, beginning of the period	31,750.9				26,356.7		20,463.4
Write-offs	(15,270.1)				(16,592)		(15,921.5)
Net allowance for credit losses	14,649.8	[1]			21,986.2	[2]	21,489.3	[3]
Allowance for credit losses, end of the period	31,130.6				31,750.9		26,356.7
Allowance for credit losses:
Allowance individually evaluated for impairment	15				65.8		59.6
Allowance collectively evaluated for impairment	31,115.6				31,685.1		26,297.1
Loans:
Loans individually evaluated for impairment	290.8				66.3		59.7
Loans collectively evaluated for impairment	1,285,597				950,999.7		805,270.1
Commercial vehicle and construction equipment finance | Impact of ASC 326 Adoption
Financing Receivable, Allowance for Credit Loss [Line Items]
Impact of adopting ASC 326							325.5
Housing loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses, beginning of the period	2,692.2				4,578		1,700.7
Write-offs	(479)				(601.6)		(190.8)
Net allowance for credit losses	1,056.7	[1]			(1,284.2)	[2]	1,408.6	[3]
Allowance for credit losses, end of the period	3,269.9				2,692.2		4,578
Allowance for credit losses:
Allowance individually evaluated for impairment	0				0		0
Allowance collectively evaluated for impairment	3,269.9				2,692.2		4,578
Loans:
Loans individually evaluated for impairment	0				0		0
Loans collectively evaluated for impairment	1,020,901.6				830,882.4		702,235.5
Housing loans | Impact of ASC 326 Adoption
Financing Receivable, Allowance for Credit Loss [Line Items]
Impact of adopting ASC 326							1,659.5
Other Retail
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses, beginning of the period	61,437				49,229.2		37,864.3
Write-offs	(15,769.9)				(17,567.4)		(9,942.8)
Net allowance for credit losses	26,345.3	[1]			29,775.2	[2]	21,073.4	[3]
Allowance for credit losses, end of the period	72,012.4				61,437		49,229.2
Allowance for credit losses:
Allowance individually evaluated for impairment	92.1				92.3		72.1
Allowance collectively evaluated for impairment	71,920.3				61,344.7		49,157.1
Loans:
Loans individually evaluated for impairment	92.3				126.6		92.7
Loans collectively evaluated for impairment	1,817,147.3				1,526,607.8		1,306,548.3
Other Retail | Impact of ASC 326 Adoption
Financing Receivable, Allowance for Credit Loss [Line Items]
Impact of adopting ASC 326							234.3
Wholesale loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for credit losses, beginning of the period	74,400.9				71,599.3		39,628.4
Write-offs	(3,156)				(2,351.4)		(3,628.7)
Net allowance for credit losses	(9,938)	[1]			5,153	[2]	8,725.4	[3]
Allowance for credit losses, end of the period	61,306.9				74,400.9		71,599.3
Allowance for credit losses:
Allowance individually evaluated for impairment	29,264.6				35,619.7		33,222.5
Allowance collectively evaluated for impairment	32,042.3				38,781.2		38,376.8
Loans:
Loans individually evaluated for impairment	33,879.5				41,832.9		42,786.8
Loans collectively evaluated for impairment	₨ 5,877,632.6				₨ 5,057,176.4		4,172,098.5
Wholesale loans | Impact of ASC 326 Adoption
Financing Receivable, Allowance for Credit Loss [Line Items]
Impact of adopting ASC 326							₨ 26,874.2
[1]Net allowances for credit losses charged to expense does not include the recoveries against write-off cases amounting to Rs. 56,142.6 million (US$ 683.1 million). Recoveries from retail loans is Rs. 53,374.2 million and from wholesale loans is Rs. 2,768.4 million.[2]Net allowances for credit losses charged to expense does not include the recoveries against write-off cases amounting to Rs. 36,181.4 million. Recoveries from retail loans is Rs. 35,385.3 million and from wholesale loans is Rs. 796.1 million.[3]Net allowances for credit losses charged to expense does not include the recoveries against write-off cases amounting to Rs.28,919.8 million (US$ 395.4 million). Recoveries from retail loans is Rs. 28,605.8 million and from wholesale loans is Rs. 314.0 million.

Allowance for Credit Losses (Pa

Allowance for Credit Losses (Parenthetical) (Detail) ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)	Mar. 31, 2021 INR (₨)
Financing Receivable, Allowance for Credit Loss [Line Items]
Cash recoveries, recoveries against write off cases	₨ 56,142.6	$ 683.1	₨ 36,181.4	₨ 28,919.8
Retail Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Recoveries of loans	53,374.2		35,385.3	28,605.8
Wholesale loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Recoveries of loans	₨ 2,768.4		₨ 796.1	₨ 314

Interest on Loans by Facility (

Interest on Loans by Facility (Detail) ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)	Mar. 31, 2021 INR (₨)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest on loans	₨ 1,351,818	$ 16,447.5	₨ 1,057,925.6	₨ 1,017,047.8
Wholesale loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest on loans	363,842.1	4,426.8	250,779.5	263,190.7
Retail Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest on loans	₨ 987,975.9	$ 12,020.7	₨ 807,146.1	₨ 753,857.1

Concentrations of Credit Risk_2

Concentrations of Credit Risk (Detail) ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)	Mar. 31, 2023 USD ($)
Concentration Risk [Line Items]
Gross loans	₨ 17,418,092.4		₨ 14,409,544	$ 211,924.7
Fair value of credit substitutes	503,187.8		583,020.2	$ 6,122.3
Non-funded exposure	1,750,449.2		1,535,475.3
Total Exposure	₨ 19,671,729.4	$ 239,344.5	₨ 16,528,039.5
Lender Concentration Risk | Concentration of Credit Risk by Industry
Concentration Risk [Line Items]
%	100%	100%	100%
Consumer Loans
Concentration Risk [Line Items]
Gross loans	₨ 4,410,346.6		₨ 3,746,781.7
Fair value of credit substitutes	0		0
Non-funded exposure	2,550.8		3,035.7
Total Exposure	₨ 4,412,897.4	$ 53,691.4	₨ 3,749,817.4
Consumer Loans | Lender Concentration Risk | Concentration of Credit Risk by Industry
Concentration Risk [Line Items]
%	22.40%	22.40%	22.70%
Retail Trade
Concentration Risk [Line Items]
Gross loans	₨ 973,274.3		₨ 589,947.3
Fair value of credit substitutes	0		0
Non-funded exposure	36,013.4		28,857.8
Total Exposure	₨ 1,009,287.7	$ 12,279.9	₨ 618,805.1
Retail Trade | Lender Concentration Risk | Concentration of Credit Risk by Industry
Concentration Risk [Line Items]
%	5.10%	5.10%	3.70%
Power
Concentration Risk [Line Items]
Gross loans	₨ 695,716.5		₨ 671,859.4
Fair value of credit substitutes	64,805.5		70,346
Non-funded exposure	45,576.3		52,366.6
Total Exposure	₨ 806,098.3	$ 9,807.7	₨ 794,572
Power | Lender Concentration Risk | Concentration of Credit Risk by Industry
Concentration Risk [Line Items]
%	4.10%	4.10%	4.80%
Consumer Services
Concentration Risk [Line Items]
Gross loans	₨ 581,272.1		₨ 465,465.8
Fair value of credit substitutes	3,545.4		0
Non-funded exposure	123,464.7		28,102.4
Total Exposure	₨ 708,282.2	$ 8,617.6	₨ 493,568.2
Consumer Services | Lender Concentration Risk | Concentration of Credit Risk by Industry
Concentration Risk [Line Items]
%	3.60%	3.60%	3%
Engineering
Concentration Risk [Line Items]
Gross loans	₨ 300,745.5		₨ 253,105.1
Fair value of credit substitutes	5,596		6,666.6
Non-funded exposure	131,956.5		105,164.7
Total Exposure	₨ 438,298	$ 5,332.7	₨ 364,936.4
Engineering | Lender Concentration Risk | Concentration of Credit Risk by Industry
Concentration Risk [Line Items]
%	2.20%	2.20%	2.20%
NBFC
Concentration Risk [Line Items]
Gross loans	₨ 690,783.9		₨ 509,445.4
Fair value of credit substitutes	91,595.9		106,764.5
Non-funded exposure	15,995.5		5,818.5
Total Exposure	₨ 798,375.3	$ 9,713.8	₨ 622,028.4
NBFC | Lender Concentration Risk | Concentration of Credit Risk by Industry
Concentration Risk [Line Items]
%	4.10%	4.10%	3.80%
Road Transportation
Concentration Risk [Line Items]
Gross loans	₨ 568,414.2		₨ 406,376.4
Fair value of credit substitutes	0		0
Non-funded exposure	12,512.4		10,269.5
Total Exposure	₨ 580,926.6	$ 7,068.1	₨ 416,645.9
Road Transportation | Lender Concentration Risk | Concentration of Credit Risk by Industry
Concentration Risk [Line Items]
%	3%	3%	2.50%
Automobile and Auto Ancillary
Concentration Risk [Line Items]
Gross loans	₨ 483,658.4		₨ 443,538.7
Fair value of credit substitutes	17,656.8		19,768.7
Non-funded exposure	38,921.4		36,999.9
Total Exposure	₨ 540,236.6	$ 6,573	₨ 500,307.3
Automobile and Auto Ancillary | Lender Concentration Risk | Concentration of Credit Risk by Industry
Concentration Risk [Line Items]
%	2.70%	2.70%	3%
Real Estate and Property Services
Concentration Risk [Line Items]
Gross loans	₨ 458,906.6		₨ 383,765.5
Fair value of credit substitutes	4,691.4		4,792.6
Non-funded exposure	52,228.7		40,694.4
Total Exposure	₨ 515,826.7	$ 6,276	₨ 429,252.5
Real Estate and Property Services | Lender Concentration Risk | Concentration of Credit Risk by Industry
Concentration Risk [Line Items]
%	2.60%	2.60%	2.60%
Agri Production—Food
Concentration Risk [Line Items]
Gross loans	₨ 401,720.3		₨ 350,859.6
Fair value of credit substitutes	0		0
Non-funded exposure	1,040.5		963.1
Total Exposure	₨ 402,760.8	$ 4,900.4	₨ 351,822.7
Agri Production—Food | Lender Concentration Risk | Concentration of Credit Risk by Industry
Concentration Risk [Line Items]
%	2%	2%	2.10%
Coal & Petroleum Products
Concentration Risk [Line Items]
Gross loans	₨ 353,329.8		₨ 233,583.7
Fair value of credit substitutes	115,279.8		174,424.6
Non-funded exposure	102,771.3		149,716.9
Total Exposure	₨ 571,380.9	$ 6,952	₨ 557,725.2
Coal & Petroleum Products | Lender Concentration Risk | Concentration of Credit Risk by Industry
Concentration Risk [Line Items]
%	2.90%	2.90%	3.40%
Food And Beverage
Concentration Risk [Line Items]
Gross loans	₨ 566,172.9		₨ 433,042.2
Fair value of credit substitutes	1,419.2		0
Non-funded exposure	49,084.4		39,007.2
Total Exposure	₨ 616,676.5	$ 7,503.1	₨ 472,049.4
Food And Beverage | Lender Concentration Risk | Concentration of Credit Risk by Industry
Concentration Risk [Line Items]
%	3.10%	3.10%	2.90%
Financial Institutions
Concentration Risk [Line Items]
Gross loans	₨ 659,117.5		₨ 618,494.1
Fair value of credit substitutes	72,068.3		51,844.1
Non-funded exposure	4,435.4		13.1
Total Exposure	₨ 735,621.2	$ 8,950.3	₨ 670,351.3
Financial Institutions | Lender Concentration Risk | Concentration of Credit Risk by Industry
Concentration Risk [Line Items]
%	3.70%	3.70%	4.10%
Agri—Allied
Concentration Risk [Line Items]
Gross loans	₨ 431,581.2
Fair value of credit substitutes	0
Non-funded exposure	2,701.2
Total Exposure	₨ 434,282.4	$ 5,283.9
Agri—Allied | Lender Concentration Risk | Concentration of Credit Risk by Industry
Concentration Risk [Line Items]
%	2.20%	2.20%
Iron and Steel
Concentration Risk [Line Items]
Gross loans	₨ 360,021.9		₨ 321,587.7
Fair value of credit substitutes	12,231.9		12,486
Non-funded exposure	61,224.3		80,515.7
Total Exposure	₨ 433,478.1	$ 5,274.1	₨ 414,589.4
Iron and Steel | Lender Concentration Risk | Concentration of Credit Risk by Industry
Concentration Risk [Line Items]
%	2.20%	2.20%	2.50%
Telecom
Concentration Risk [Line Items]
Gross loans	₨ 365,112.3		₨ 331,131.1
Fair value of credit substitutes	0		2,989.4
Non-funded exposure	42,221.1		43,335.9
Total Exposure	₨ 407,333.4	$ 4,956	₨ 377,456.4
Telecom | Lender Concentration Risk | Concentration of Credit Risk by Industry
Concentration Risk [Line Items]
%	2.10%	2.10%	2.30%
Infrastructure Development
Concentration Risk [Line Items]
Gross loans	₨ 284,690.7		₨ 272,428
Fair value of credit substitutes	15,220.2		18,032.7
Non-funded exposure	170,452.2		220,442.5
Total Exposure	₨ 470,363.1	$ 5,722.9	₨ 510,903.2
Infrastructure Development | Lender Concentration Risk | Concentration of Credit Risk by Industry
Concentration Risk [Line Items]
%	2.40%	2.40%	3.10%
Wholesale Trade—Non Industrial
Concentration Risk [Line Items]
Gross loans	₨ 530,057.5		₨ 417,954.8
Fair value of credit substitutes	1,988.8		0
Non-funded exposure	31,887		26,147.5
Total Exposure	₨ 563,933.3	$ 6,861.3	₨ 444,102.3
Wholesale Trade—Non Industrial | Lender Concentration Risk | Concentration of Credit Risk by Industry
Concentration Risk [Line Items]
%	2.90%	2.90%	2.70%
Wholesale Trade—Industrial
Concentration Risk [Line Items]
Gross loans	₨ 421,900.9		₨ 347,202.9
Fair value of credit substitutes	0		0
Non-funded exposure	70,853.6		73,867.5
Total Exposure	₨ 492,754.5	$ 5,995.3	₨ 421,070.4
Wholesale Trade—Industrial | Lender Concentration Risk | Concentration of Credit Risk by Industry
Concentration Risk [Line Items]
%	2.50%	2.50%	2.50%
Others (none greater than 2%)
Concentration Risk [Line Items]
Gross loans	₨ 3,490,386.3		₨ 3,288,555
Fair value of credit substitutes	92,104.1		108,769.3
Non-funded exposure	719,829.4		546,407.8
Total Exposure	₨ 4,302,319.8	$ 52,346	₨ 3,943,732.1
Others (none greater than 2%) | Lender Concentration Risk | Concentration of Credit Risk by Industry
Concentration Risk [Line Items]
%	22%	22%	23.80%
Textiles and Garments
Concentration Risk [Line Items]
Gross loans	₨ 390,883		₨ 324,419.6
Fair value of credit substitutes	4,984.5		6,135.7
Non-funded exposure	34,729.1		43,748.6
Total Exposure	₨ 430,596.6	$ 5,239	₨ 374,303.9
Textiles and Garments | Lender Concentration Risk | Concentration of Credit Risk by Industry
Concentration Risk [Line Items]
%	2.20%	2.20%	2.30%

Exposures to Ten Largest Borrow

Exposures to Ten Largest Borrowers Computed as per RBI Guidelines, Based on Higher of Outstanding Balance or Limit on Loans, Investments (Including Credit Substitutes) and Non-Funded Exposures (Detail) ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Concentration Risk [Line Items]
Total Exposure	₨ 19,671,729.4	$ 239,344.5	₨ 16,528,039.5
Borrower 1
Concentration Risk [Line Items]
Total Exposure	284,002.5	3,455.4	266,161.9
Borrower 1 | Funded Exposure
Concentration Risk [Line Items]
Total Exposure	284,002.5		265,661.9
Borrower 1 | Non-Funded Exposure
Concentration Risk [Line Items]
Total Exposure	0		500
Borrower 2
Concentration Risk [Line Items]
Total Exposure	222,101.6	2,702.3	245,435
Borrower 2 | Funded Exposure
Concentration Risk [Line Items]
Total Exposure	220,901.6		245,435
Borrower 2 | Non-Funded Exposure
Concentration Risk [Line Items]
Total Exposure	1,200		0
Borrower 3
Concentration Risk [Line Items]
Total Exposure	205,801	2,504	236,497.9
Borrower 3 | Funded Exposure
Concentration Risk [Line Items]
Total Exposure	205,801		119,950.5
Borrower 3 | Non-Funded Exposure
Concentration Risk [Line Items]
Total Exposure	0		116,547.4
Borrower 4
Concentration Risk [Line Items]
Total Exposure	192,489.2	2,342	150,283.8
Borrower 4 | Funded Exposure
Concentration Risk [Line Items]
Total Exposure	80,344.5		150,283.8
Borrower 4 | Non-Funded Exposure
Concentration Risk [Line Items]
Total Exposure	112,144.7		0
Borrower 5
Concentration Risk [Line Items]
Total Exposure	185,299	2,254.5	145,908.2
Borrower 5 | Funded Exposure
Concentration Risk [Line Items]
Total Exposure	185,299		126,639.8
Borrower 5 | Non-Funded Exposure
Concentration Risk [Line Items]
Total Exposure	0		19,268.4
Borrower 6
Concentration Risk [Line Items]
Total Exposure	176,061.5	2,142.1	142,600
Borrower 6 | Funded Exposure
Concentration Risk [Line Items]
Total Exposure	154,296.7		142,600
Borrower 6 | Non-Funded Exposure
Concentration Risk [Line Items]
Total Exposure	21,764.8		0
Borrower 7
Concentration Risk [Line Items]
Total Exposure	155,625.7	1,893.5	140,232
Borrower 7 | Funded Exposure
Concentration Risk [Line Items]
Total Exposure	155,565.7		140,000
Borrower 7 | Non-Funded Exposure
Concentration Risk [Line Items]
Total Exposure	60		232
Borrower 8
Concentration Risk [Line Items]
Total Exposure	139,808.3	1,701	137,899.2
Borrower 8 | Funded Exposure
Concentration Risk [Line Items]
Total Exposure	139,808.3		137,700
Borrower 8 | Non-Funded Exposure
Concentration Risk [Line Items]
Total Exposure	0		199.2
Borrower 9
Concentration Risk [Line Items]
Total Exposure	127,590.3	1,552.4	133,670
Borrower 9 | Funded Exposure
Concentration Risk [Line Items]
Total Exposure	121,560		133,670
Borrower 9 | Non-Funded Exposure
Concentration Risk [Line Items]
Total Exposure	6,030.3		0
Borrower 10
Concentration Risk [Line Items]
Total Exposure	127,549	$ 1,551.9	126,447.2
Borrower 10 | Funded Exposure
Concentration Risk [Line Items]
Total Exposure	112,479		108,591.5
Borrower 10 | Non-Funded Exposure
Concentration Risk [Line Items]
Total Exposure	₨ 15,070		₨ 17,855.7

Property and Equipment - Additi

Property and Equipment - Additional Information (Detail) ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)	Mar. 31, 2021 INR (₨)
Property, Plant and Equipment [Line Items]
Depreciation and amortization	₨ 23,489.7	$ 285.8	₨ 16,816.9	₨ 13,860.2

Property and Equipment by Asset

Property and Equipment by Asset Category (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Property, Plant and Equipment [Line Items]
Land and premises	₨ 25,501.3	$ 310.3	₨ 22,754.4
Software and systems	56,092.8	682.5	45,767.3
Equipment and furniture	132,553.5	1,612.9	106,945.7
Property and equipment, at cost	214,147.6	2,605.7	175,467.4
Less: Accumulated depreciation	126,577.9	1,540.1	109,641
Property and equipment, net	₨ 87,569.7	$ 1,065.6	₨ 65,826.4

Goodwill - Additional Informati

Goodwill - Additional Information (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)	Mar. 31, 2022 USD ($)
Goodwill and Intangible Assets Disclosure [Line Items]
Goodwill	₨ 74,937.9	$ 911.8	₨ 74,937.9	$ 911.8

Other Assets (Detail)

Other Assets (Detail) ₨ in Millions, $ in Millions		Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Other Assets Disclosure [Line Items]
Security deposits for leased property		₨ 6,461.8	$ 78.6	₨ 5,687.6
Sundry accounts receivable		84,217.8	1,024.7	52,033.2
Advance income tax (in excess of current tax expense)		52,006.4	632.8	41,941.6
Advances		14,724.3	179.1	10,705.4
Prepaid expenses		4,757.4	57.9	4,333.2
Deposits/Margins paid		14,959	182	10,330.7
Derivatives (see note 23)		121,749.4	1,481.3	80,202.3
Term placements		970,063.2	11,802.7	471,502
Receivable on account of trade date		8,442.2	102.7	2,025.2
Others	[1]	129,380.8	1,574.1	114,420.9
Total		₨ 1,496,751.6	$ 18,210.8	₨ 864,754.3
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]		Total	Total	Total
Other Assets [Member]
Other Assets Disclosure [Line Items]
Right-of-use assets		₨ 89,989.3	$ 1,094.9	₨ 71,572.2
[1]Others include equity securities with carrying value amounting to Rs. 14,736.7 million and Rs. 22,103.4 million as of March 31, 2022 and March 31, 2023, respectively. Equity securities include non-marketable equity securities carried at cost of Rs. 2,665.9 million and Rs. 2,640.8 million as of March 31, 2022 and March 31, 2023, respectively. Unrealized gain/(loss)recognized in non-interest revenue–other, net amount to Rs. (7,633.5) million and Rs. 7,160.1 million for the fiscal years ended March 31, 2022 and March 31, 2023, respectively.

Other Assets (Parenthetical) (D

Other Assets (Parenthetical) (Detail) ₨ in Millions, $ in Millions		12 Months Ended
		Mar. 31, 2023 INR (₨)	Mar. 31, 2022 INR (₨)	Mar. 31, 2023 USD ($)
Other Assets Disclosure [Line Items]
Other assets	[1]	₨ 129,380.8	₨ 114,420.9	$ 1,574.1
Unrealized gain/(loss) recognized in non-interest revenue–other, net		7,160.1
Unrealized gain/(loss) recognized in non-interest revenue–other, net			(7,633.5)
Equity securities
Other Assets Disclosure [Line Items]
Other assets		22,103.4	14,736.7
Equity securities | Non Marketable Equity Securities [Member]
Other Assets Disclosure [Line Items]
Other assets		₨ 2,640.8	₨ 2,665.9
[1]Others include equity securities with carrying value amounting to Rs. 14,736.7 million and Rs. 22,103.4 million as of March 31, 2022 and March 31, 2023, respectively. Equity securities include non-marketable equity securities carried at cost of Rs. 2,665.9 million and Rs. 2,640.8 million as of March 31, 2022 and March 31, 2023, respectively. Unrealized gain/(loss)recognized in non-interest revenue–other, net amount to Rs. (7,633.5) million and Rs. 7,160.1 million for the fiscal years ended March 31, 2022 and March 31, 2023, respectively.

Deposits - Additional Informati

Deposits - Additional Information (Detail) ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2022 INR (₨)	Mar. 31, 2023 USD ($)
Deposits From Banking Clients [Line Items]
Time deposits with residual maturity of one year or less	₨ 7,121,444.9	₨ 6,186,602.3	$ 86,646.1
Maturity of deposits		1 year
Time deposits	10,472,547.9	₨ 8,080,607.6	$ 127,418.8
Excess in time deposits	₨ 0.5
Maximum [Member]
Deposits From Banking Clients [Line Items]
Maturity of deposits	10 years
Deposit in excess of Rs. 500000
Deposits From Banking Clients [Line Items]
Time deposits	₨ 9,127,675.3	₨ 6,938,558

Deposits (Detail)

Deposits (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Interest-bearing:
Savings deposits	₨ 5,624,911.4	$ 68,437.9	₨ 5,117,372.1
Time deposits	10,472,547.9	127,418.8	8,080,607.6
Total interest-bearing deposits	16,097,459.3	195,856.7	13,197,979.7
Non-interest-bearing deposits	2,729,176.3	33,205.7	2,382,052.2
Total	₨ 18,826,635.6	$ 229,062.4	₨ 15,580,031.9

Deposits - Scheduled Maturities

Deposits - Scheduled Maturities for Total Time Deposits (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Due to mature in the fiscal year ending March 31:
2024	₨ 7,121,444.9	$ 86,646.1	₨ 6,186,602.3
2025	2,119,471.5	25,787.5
2026	518,151.5	6,304.3
2027	235,850.6	2,869.6
2028	341,065.1	4,149.7
Thereafter	136,564.3	1,661.6
Total	₨ 10,472,547.9	$ 127,418.8	₨ 8,080,607.6

Short-Term Borrowings (Detail)

Short-Term Borrowings (Detail) ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)	Mar. 31, 2023 USD ($)
Short-term Debt [Line Items]
Short-term borrowings	₨ 1,089,897.5		₨ 554,167.6	$ 13,260.7
Maximum amount outstanding	1,154,282.6	$ 14,044.1	805,872.6
Average amount outstanding	₨ 870,879.3	$ 10,595.9	₨ 377,877.2
Weighted average interest rate	4%		1.60%	4%
Borrowed in the call market
Short-term Debt [Line Items]
Short-term borrowings	₨ 14,359.5		₨ 9,001.8	$ 174.7
Term borrowings from institutions/banks
Short-term Debt [Line Items]
Short-term borrowings	735,131.5		114,500	8,944.3
Foreign currency borrowings
Short-term Debt [Line Items]
Short-term borrowings	320,695		₨ 430,665.8	3,901.9
Bills rediscounted
Short-term Debt [Line Items]
Short-term borrowings	₨ 19,711.5			$ 239.8

Long-Term Debt - Additional Inf

Long-Term Debt - Additional Information (Detail) ₨ in Millions, $ in Millions		12 Months Ended
		Mar. 31, 2023 INR (₨)	Mar. 31, 2022 INR (₨)	Mar. 31, 2023 USD ($)
Debt Instrument [Line Items]
Subordinated debt, debt raised during the year		₨ 200,000	₨ 0
Other long term debt, debt raised during the year		792,933.1	638,226.4
Perpetual debt, debt raised during the year		30,000	84,682.5
Other long-term debt	[1]	1,681,587.2	1,295,854.3	$ 20,459.8
Foreign currency borrowings
Debt Instrument [Line Items]
Other long-term debt		157,092.6	40,170
Functional currency borrowings
Debt Instrument [Line Items]
Other long-term debt		₨ 1,524,494.6	₨ 1,255,684.3
[1]Includes securities sold under repurchase agreements amounting to Rs. 90,200.0 million with a stated interest rate of 4.0% per annum and Rs. 90,200.0 million (US$ 1097.5 million) with stated interest rate of 4.2% per annum for the fiscal years ended March 31, 2022 and March 31, 2023, respectively, under RBI long-term repo operation with a three-year maturity period.

Long-Term Debt (Detail)

Long-Term Debt (Detail) ₨ in Millions, $ in Millions		Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Debt Instrument [Line Items]
Subordinated debt		₨ 375,060	$ 4,563.3	₨ 259,452.5
Others	[1]	1,681,587.2	20,459.8	1,295,854.3
Less: Debt issuance cost		(2,210.8)	(26.9)	(973.4)
Total		₨ 2,054,436.4	$ 24,996.2	₨ 1,554,333.4
[1]Includes securities sold under repurchase agreements amounting to Rs. 90,200.0 million with a stated interest rate of 4.0% per annum and Rs. 90,200.0 million (US$ 1097.5 million) with stated interest rate of 4.2% per annum for the fiscal years ended March 31, 2022 and March 31, 2023, respectively, under RBI long-term repo operation with a three-year maturity period.

Long-Term Debt (Parenthetical)

Long-Term Debt (Parenthetical) (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Debt Instrument [Line Items]
Securities sold under repurchase agreements	₨ 0		₨ 151,844.9
Securities sold under repurchase agreement
Debt Instrument [Line Items]
Securities sold under repurchase agreements	₨ 90,200	$ 1,097.5	₨ 90,200
Interest rate	4.20%	4.20%	4%

Long-Term Debt and Related Cont

Long-Term Debt and Related Contractual Rates and Maturity Dates (Detail) ₨ in Millions, $ in Millions		12 Months Ended
		Mar. 31, 2023 INR (₨)		Mar. 31, 2022 INR (₨)	Mar. 31, 2023 USD ($)
Debt Instrument [Line Items]
Total		₨ 2,054,436.4		₨ 1,554,333.4	$ 24,996.2
Perpetual debt—(1)
Debt Instrument [Line Items]
Total		125,575.1
Subordinated debt | Subordinated debt (other than perpetual debt)
Debt Instrument [Line Items]
Total		248,983.8		89,759.4	3,029.4
Subordinated debt | Perpetual debt—(1)
Debt Instrument [Line Items]
Total		₨ 43,850.5		₨ 93,848.2	$ 533.5
Subordinated debt | Perpetual debt—(2)
Debt Instrument [Line Items]
Maturity /Call dates		2027		2027
Stated interest rates		3.70%		3.70%	3.70%
Total		₨ 81,724.6		₨ 75,216.3	$ 994.3
Subordinated debt | Minimum | Subordinated debt (other than perpetual debt)
Debt Instrument [Line Items]
Maturity /Call dates		2024		2023
Stated interest rates		7.35%		7.35%	7.35%
Subordinated debt | Minimum | Perpetual debt—(1)
Debt Instrument [Line Items]
Maturity /Call dates		2024		2023
Stated interest rates		7.55%		7.55%	7.55%
Subordinated debt | Maximum | Subordinated debt (other than perpetual debt)
Debt Instrument [Line Items]
Maturity /Call dates		2033		2031
Stated interest rates		10.20%		10.20%	10.20%
Subordinated debt | Maximum | Perpetual debt—(1)
Debt Instrument [Line Items]
Maturity /Call dates		2030		2030
Stated interest rates		9.40%		9.70%	9.40%
Others | Variable rate—(1)
Debt Instrument [Line Items]
Total	[1]	₨ 76,405.9		₨ 40,045.9	$ 929.6
Others | Variable rate—(2)
Debt Instrument [Line Items]
Total	[1]	148,813.9		82,243.1	1,810.6
Others | Fixed rate-(1)
Debt Instrument [Line Items]
Total	[1]	₨ 1,374,137.4		₨ 1,173,220.5	$ 16,719
Others | Fixed rate-(2)
Debt Instrument [Line Items]
Maturity /Call dates		2024	[1]	0
Stated interest rates		2.58%	[1]	0%	2.58%	[1]
Total		₨ 80,520.3	[1]	₨ 0	$ 979.8	[1]
Others | Minimum | Variable rate—(1)
Debt Instrument [Line Items]
Maturity /Call dates	[1]	2024		2023
Stated interest rates	[1]	1.40%		1.40%	1.40%
Others | Minimum | Variable rate—(2)
Debt Instrument [Line Items]
Maturity /Call dates	[1]	2024		2023
Stated interest rates	[1]	4.50%		4.40%	4.50%
Others | Minimum | Fixed rate-(1)
Debt Instrument [Line Items]
Maturity /Call dates	[1]	2024		2023
Stated interest rates	[1]	2.80%		2.80%	2.80%
Others | Maximum | Variable rate—(1)
Debt Instrument [Line Items]
Maturity /Call dates	[1]	2026		2024
Stated interest rates	[1]	4.80%		1.80%	4.80%
Others | Maximum | Variable rate—(2)
Debt Instrument [Line Items]
Maturity /Call dates	[1]	2029		2027
Stated interest rates	[1]	9.44%		6.90%	9.44%
Others | Maximum | Fixed rate-(1)
Debt Instrument [Line Items]
Maturity /Call dates	[1]	2030		2030
Stated interest rates	[1]	9.81%		9.21%	9.81%
[1]Variable rate — (1), Perpetual debt — (2) and Fixed rate — (2) represent foreign currency debt. Variable rate debt is typically indexed to LIBOR, SOFR, T-bill rates, Marginal cost of funds based lending rates (“MCLR”), among others.

Long-Term Debt - Scheduled Matu

Long-Term Debt - Scheduled Maturities of Long-Term Debt (Detail) ₨ in Millions, $ in Millions		Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Due in the twelve months ending March 31:
Total		₨ 2,054,436.4	$ 24,996.2	₨ 1,554,333.4
Long-Term Debt Excluding Perpetual Debt
Due in the twelve months ending March 31:
2024		515,282.4	6,269.4
2025		231,738.2	2,819.5
2026		653,549.2	7,951.7
2027		141,079.6	1,716.5
2028		48,214.9	586.6
Thereafter		338,997	4,124.7
Total	[1]	₨ 1,928,861.3	$ 23,468.4
[1]The scheduled maturities of long-term debt do not include perpetual bonds of Rs. 125,575.1 million (net of debt issuance cost).

Long-Term Debt - Scheduled Ma_2

Long-Term Debt - Scheduled Maturities of Long-Term Debt (Parenthetical) (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Debt Instrument [Line Items]
Long-term debt	₨ 2,054,436.4	$ 24,996.2	₨ 1,554,333.4
Perpetual debt
Debt Instrument [Line Items]
Long-term debt	₨ 125,575.1

Accrued Expenses and Other Li_3

Accrued Expenses and Other Liabilities - Additional Information (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Credit card
Other Liabilities [Line Items]
Unamortized annual fees	₨ 1,194.7	$ 14.5	₨ 1,257.9

Accrued Expenses and Other Li_4

Accrued Expenses and Other Liabilities (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Other Liabilities [Line Items]
Bills payable	₨ 117,907.5	$ 1,434.6	₨ 130,937.4
Remittances in transit	61,927.3	753.5	91,766.3
Accrued expenses	45,684.4	555.8	58,522.2
Accounts payable	206,920.4	2,517.6	152,309.2
Derivatives (see note 23)	98,783.5	1,201.9	74,819.2
Lease liabilities	97,658.9	1,188.2	78,138
Others	125,471.4	1,526.6	94,969.2
Total	₨ 754,353.4	$ 9,178.2	₨ 681,461.5
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Lease liabilities	Lease liabilities	Lease liabilities

Changes in Accumulated Other Co

Changes in Accumulated Other Comprehensive Income After Tax (Detail) ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	₨ 2,509,453.4		₨ 2,163,404.8
Net unrealized gain/(loss) arising during the period	(49,144.3)		(34,791.1)
Amounts reclassified to income	(1,336.9)		(10,187.7)
Balance	2,917,837.9	$ 35,501.1	2,509,453.4
AFS debt Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(21,063.4)		25,212.9
Net unrealized gain/(loss) arising during the period	(52,522.8)		(36,088.6)
Amounts reclassified to income	(1,336.9)		(10,187.7)
Balance	(74,923.1)	(911.6)	(21,063.4)
Foreign Currency Translation Reserve
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	3,270.9		1,973.4
Net unrealized gain/(loss) arising during the period	3,378.5		1,297.5
Amounts reclassified to income	0		0
Balance	6,649.4	80.9	3,270.9
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(17,792.5)		27,186.3
Balance	₨ (68,273.7)	$ (830.7)	₨ (17,792.5)

Reclassification Out of Accumul

Reclassification Out of Accumulated Other Comprehensive Income (OCI) by Income line Item and the Related Tax Effect (Detail) ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
AFS debt securities:
Allowance on AFS debt securities	₨ 70.9	$ 0.9	₨ (2,915.1)
Net of income tax	(1,336.9)		(10,187.7)
AFS debt Securities
AFS debt securities:
Net of income tax	(1,336.9)		(10,187.7)
Reclassification out of Accumulated Other Comprehensive Income | AFS debt Securities
AFS debt securities:
Realized (gain)/loss on sales of AFS debt securities, net	(1,857.5)	(22.7)	(10,699.4)
Allowance on AFS debt securities	70.9	0.9	(2,915.1)
Total before income tax	(1,786.6)	(21.8)	(13,614.5)
Income tax	449.7	5.5	3,426.8
Net of income tax	₨ (1,336.9)	$ (16.3)	₨ (10,187.7)

Non-Interest Revenue - Summary

Non-Interest Revenue - Summary of Disaggregation of Revenue (Detail) ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)	Mar. 31, 2021 INR (₨)
Disaggregation of Revenue [Line Items]
Fees and commissions	₨ 239,603.7	$ 2,915.2	₨ 202,979.5	₨ 165,410.4
Deposit Related Fees
Disaggregation of Revenue [Line Items]
Fees and commissions	40,749.9	495.8	37,415.4	28,150.4
Lending related fees
Disaggregation of Revenue [Line Items]
Fees and commissions	48,878.2	594.7	40,532.5	30,973.1
Third-party products related fees
Disaggregation of Revenue [Line Items]
Fees and commissions	54,548.9	663.7	44,216.1	35,733
Payments and cards business fees
Disaggregation of Revenue [Line Items]
Fees and commissions	72,969	887.8	56,170.2	50,758.2
Other
Disaggregation of Revenue [Line Items]
Fees and commissions	₨ 22,457.7	$ 273.2	₨ 24,645.3	₨ 19,795.7

Non-Interest Revenue - Summar_2

Non-Interest Revenue - Summary of Disaggregation of Revenue from Business Segments (Detail) ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)	Mar. 31, 2021 INR (₨)
Disaggregation of Revenue [Line Items]
Fees and commissions	₨ 239,603.7	$ 2,915.2	₨ 202,979.5	₨ 165,410.4
Retail Banking
Disaggregation of Revenue [Line Items]
Fees and commissions	215,252.5	2,618.9	182,464.1	153,018.2
Wholesale Banking
Disaggregation of Revenue [Line Items]
Fees and commissions	23,619.5	287.4	19,802	11,712.7
Treasury Services
Disaggregation of Revenue [Line Items]
Fees and commissions	₨ 731.7	$ 8.9	₨ 713.4	₨ 679.5

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2022 INR (₨)	Mar. 31, 2021 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)
Income Taxes [Line Items]
Total unrecognized tax benefit	₨ 48,792.1	₨ 46,774.3	₨ 43,048	$ 593.7	$ 569.1
The total unrecognized tax benefits, if recognized, that would reduce the tax and thereby affect the effective tax rate	48,792.1	46,774.3
Income tax expense (benefit) recorded in retained earnings			(21,016)
Other comprehensive income	₨ 16,980	₨ 15,129.2	₨ (8,457.8)

Income Tax Expense (Detail)

Income Tax Expense (Detail) ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)	Mar. 31, 2021 INR (₨)
Components of Income Tax Expense Benefit Abstract
Current tax expense	₨ 156,782.9	$ 1,907.6	₨ 142,446.5	₨ 122,087.4
Deferred tax expense/ (benefit)	12,280.9	149.4	(9,887.3)	(8,267.3)
Interest on income tax refund	(2,946.4)	(35.9)	0	0
Income tax expense	₨ 166,117.4	$ 2,021.1	₨ 132,559.2	₨ 113,820.1

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Income Taxes at Indian Statutory Income Tax Rate to Income Tax Expense as Reported (Detail) ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)	Mar. 31, 2021 INR (₨)
Reconciliation of Estimated Income Taxes to Income Tax Expense as Reported [Line Items]
Income before income tax expense	₨ 662,381.8	$ 8,058.9	₨ 519,162.2	₨ 439,826.5
Statutory income tax rate	25.17%	25.17%	25.17%	25.17%
Expected income tax expense	₨ 166,708.3	$ 2,028.3	₨ 130,662.7	₨ 110,695.5
Adjustments to reconcile expected income tax to actual income tax expense
Interest on income tax refund	(2,204.9)	(26.8)	0	0
Nondeductible stock-based compensation	1,645.9	20	3,493.1	2,668.7
Income subject to rates other than the statutory income tax rate	(6.8)	(0.1)	(2,347.6)	0
Income exempt from income taxes	0	0	0	(62.3)
Others, net	(25.1)	(0.3)	751	518.2
Income tax expense	₨ 166,117.4	$ 2,021.1	₨ 132,559.2	₨ 113,820.1

Income Taxes - Tax Effects of S

Income Taxes - Tax Effects of Significant Temporary Differences (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Deductible temporary differences:
Allowance for credit losses	₨ 74,143.7	$ 902.1	₨ 79,821.5
Investments AFS debt securities	25,117	305.6	6,997
Lease liabilities	24,578.8	299	19,745.8
Employee benefits	709.9	8.6	728.1
Accrued expenses and other liabilities	3,939.2	47.9	3,772.1
Others	1,520.3	18.5	2,158.9
Deferred tax assets	130,008.9	1,581.7	113,223.4
Taxable temporary differences:
Right-of-use assets	24,578.8	299	19,745.8
Loans	7,070.1	86	5,024.1
Investments, others	8,304.6	101	3,097.2
Deferred tax liabilities	39,953.5	486	27,867.1
Net deferred tax asset/ (liability)	₨ 90,055.4	$ 1,095.7	₨ 85,356.3

Income Taxes - Reconciliation_2

Income Taxes - Reconciliation of Beginning and Ending Balance of Unrecognized Tax Benefits (Detail) ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Income Tax Contingency [Line Items]
Opening balance	₨ 46,774.3	$ 569.1	₨ 43,048
Settlements related to prior year tax positions	0	0	(1,985)
Increase related to current year tax positions	2,017.8	24.6	5,711.3
Closing balance	₨ 48,792.1	$ 593.7	₨ 46,774.3

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail) ₨ / shares in Units, ₨ in Millions

8 Months Ended

12 Months Ended

Nov. 25, 2021 shares

Oct. 20, 2021 shares

Jul. 31, 2021 shares

Dec. 31, 2022

Mar. 31, 2023 INR (₨) ₨ / shares shares

Mar. 31, 2023 INR (₨) $ / shares ₨ / shares shares

Mar. 31, 2022 INR (₨) ₨ / shares shares

Mar. 31, 2021 INR (₨)

Jun. 30, 2013 INR (₨) shares

Jun. 30, 2010 INR (₨) shares

Jun. 30, 2007 INR (₨) shares

Jan. 31, 2000 INR (₨) shares

Oct. 13, 2022 shares

May 14, 2022 INR (₨) ₨ / shares shares

Jun. 30, 2003 shares

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Stock-based compensation, intrinsic value of options exercised at grant date

₨ 0.5

₨ 0

₨ 0

Stock-based compensation, aggregate intrinsic value of options exercised at exercise date

20,891.2

22,077.7

₨ 26,446.8

Stock-based compensation, aggregate intrinsic value of options outstanding at grant date

13.3

₨ 13.3

2.7

Stock-based compensation, aggregate intrinsic value of options outstanding

52,286.4

52,286.4

46,605

Stock-based compensation, aggregate intrinsic value of options exercisable at grant date

0.5

0.5

0.5

Stock-based compensation, aggregate intrinsic value of options exercisable

₨ 29,084.2

₨ 29,084.2

₨ 28,340

Stock-based compensation, unvested options, outstanding | shares

86,557,545

86,557,545

92,784,900

Stock-based compensation, unvested options, weighted average exercise price | ₨ / shares

₨ 1,341.5

₨ 1,341.5

₨ 1,273.6

Stock-based compensation, unvested options, aggregate intrinsic value at grant date

₨ 12.8

₨ 12.8

₨ 2.1

Stock-based compensation, unvested options, aggregate intrinsic value as at end of period

23,202.2

23,202.2

₨ 18,265

Stock-based compensation, total estimated compensation cost to be recognized in future periods

₨ 17,245.5

₨ 17,245.5

Equity shares, par value | ₨ / shares

₨ 1

₨ 1

₨ 1

Employees Stock Option Scheme

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Stock-based compensation, weighted average period of recognition of total compensation cost not yet recognized (in years)

1 year 14 days

Share-based payment arrangement, expense

₨ 13,132.8

₨ 13,874.5

₨ 10,603.5

Employees Stock Option Scheme | Plan ''A''

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Employees' Stock Option Scheme, equity shares reserved for issuance | shares

100,000,000

Employees' Stock Option Scheme, aggregate nominal value of equity shares reserved

₨ 100

Employees Stock Option Scheme | Plan ''B''

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Employees' Stock Option Scheme, equity shares reserved for issuance | shares

100,000,000

Employees' Stock Option Scheme, aggregate nominal value of equity shares reserved

₨ 100

Employees Stock Option Scheme | Plan ''D''

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Employees' Stock Option Scheme, equity shares reserved for issuance | shares

150,000,000

Employees' Stock Option Scheme, aggregate nominal value of equity shares reserved

₨ 150

Employees Stock Option Scheme | Plan "E"

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Employees' Stock Option Scheme, equity shares reserved for issuance | shares

200,000,000

Employees' Stock Option Scheme, aggregate nominal value of equity shares reserved

₨ 200

Employees Stock Option Scheme | Plan "F"

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Employees' Stock Option Scheme, equity shares reserved for issuance | shares

200,000,000

Employees' Stock Option Scheme, aggregate nominal value of equity shares reserved

₨ 200

Employees Stock Option Scheme | Maximum

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Employees' Stock Option Scheme, expiration

5 years

Scheme XXVII | Plan "G"

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Stock-based compensation, options granted | shares

238,000

30,480,145

Scheme XXXV | Plan "G"

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Stock-based compensation, options granted | shares

57,466,600

Scheme XXXVI | Plan "G"

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Stock-based compensation, options granted | shares

25,390,600

Restricted Stock Units (RSUs) [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Stock-based compensation, total estimated compensation cost to be recognized in future periods

₨ 2,690.6

₨ 2,690.6

Stock-based compensation, weighted average period of recognition of total compensation cost not yet recognized (in years)

1 year 2 months 15 days

Share-based payment arrangement, expense, tax benefit

₨ 0

Stock-based compensation, intrinsic value of equity instruments other than options exercised at grant date

0

0

Stock-based compensation, aggregate intrinsic value of equity instruments other than options outstanding at grant date

4,037.9

₨ 4,037.9

Aggregate intrinsic value, vested

₨ 4,650.3

Number of shares arising out of units | shares

2,891,000

2,891,000

Weighted average fair value of RSUs granted during the year | $ / shares

₨ 1

Share-based payment arrangement, expense

₨ 881.8

Restricted Stock Units (RSUs) [Member] | Employee Stock Incentive Master Scheme Two Thousand And Twenty Two [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Employees' Stock Option Scheme, equity shares reserved for issuance | shares

100,000,000

Equity shares, par value | ₨ / shares

₨ 1

Common stock shares reserved for future issuance aggregate par value

₨ 100

Share based compensation by share based award vesting period one

4 years

Weighted average fair value of RSUs granted during the year | ₨ / shares

₨ 1,382.34

Restricted Stock Units (RSUs) [Member] | Employee Stock Incentive Master Scheme Two Thousand And Twenty Two [Member] | Scheme Zero Zero One [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Share based compensation by share based award number of shares authorized for grant | shares

2,891,000

Restricted Stock Units (RSUs) 1 [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Stock-based compensation, aggregate intrinsic value of equity instruments other than options outstanding at grant date

₨ 0

₨ 0

ShareBased compensation arrangement by sharebased payment award equity instruments other than options exercisable grant date intrinsic value

₨ 0

₨ 0

Estimated Fair Value of Options

Estimated Fair Value of Options on Dates of Each Grant Using Binomial Option Pricing Model (Detail) - Employees Stock Option	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield			0.61%
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	0.51%	0.43%
Expected volatility	21.97%	21.71%	20.13%
Risk-free interest rate, lower range	6.14%	4.99%	4.63%
Expected term (in years)	2 years 6 months 10 days	2 years 7 months 2 days	2 years 7 months 24 days
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	0.97%	0.46%
Expected volatility	33.50%	31.79%	28.93%
Risk-free interest rate, upper range	7.59%	6.43%	5.75%
Expected term (in years)	7 years 3 months	5 years 4 months 9 days	5 years 5 months 4 days

Estimated Fair Value of Restric

Estimated Fair Value of Restricted Stock Units on Dates of Each Grant Using Binomial Option Pricing Model (Detail) - Restricted Stock Units (RSUs) [Member] - Employee Stock Incentive Master Scheme Two Thousand And Twenty Two [Member]	12 Months Ended
	Mar. 31, 2023
Share Based Compensation By Share Based Award Restricted Stock Units Valuation Assumptions [Line Items]
Expected volatility, lower range	23.68%
Expected volatility, upper range	35.35%
Risk-free interest rate, lower range	7.07%
Risk-free interest rate, upper range	7.57%
Maximum [Member]
Share Based Compensation By Share Based Award Restricted Stock Units Valuation Assumptions [Line Items]
Dividend yield	0.75%
Expected term (in years)	4 years
Minimum [Member]
Share Based Compensation By Share Based Award Restricted Stock Units Valuation Assumptions [Line Items]
Dividend yield	0.47%
Expected term (in years)	1 year

Activity in Options Available t

Activity in Options Available to be Granted Under Employee Stock Option Scheme (Detail) - Employees Stock Option Scheme - shares	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options available to be granted, beginning of period	81,992,420	104,694,170	159,487,350
Equity shares allocated for grant under the plan	0	0	0
Options granted	(30,480,145)	(25,628,600)	(57,466,600)
Forfeited/lapsed	2,701,890	2,926,850	2,673,420
Options available to be granted, end of period	54,214,165	81,992,420	104,694,170

Summary Of Activity in the RSU'

Summary Of Activity in the RSU's outstanding under the various Employees' Stock Incentive Master Scheme (Detail) - Restricted Stock Units (RSUs) [Member] - Employee Stock Incentive Master Scheme Two Thousand And Twenty Two [Member]	12 Months Ended
	Mar. 31, 2023 shares
Disclosure In Tabular Form Of Movement In Restricted Stock Units One [Line Items]
Equity shares allocated for grant under the scheme	100,000,000
RSUs granted	(2,891,000)
Forfeited/lapsed	0
Options available to be granted, end of period	97,109,000

Activity in Options Outstanding

Activity in Options Outstanding under Employee Stock Option Scheme, Employees Stock Option Schemes (Detail) - Employees Stock Option Scheme - ₨ / shares	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Options
Options outstanding, beginning of period	158,106,016	168,168,760	142,865,602
Granted	30,480,145	25,628,600	57,466,600
Exercised	(34,201,810)	(32,764,494)	(29,490,022)
Forfeited	(2,175,700)	(2,639,100)	(2,032,110)
Lapsed	(526,190)	(287,750)	(641,310)
Options outstanding, end of period	151,682,461	158,106,016	168,168,760
Options exercisable, end of period	65,124,916	65,321,116	64,453,260
Weighted Average Exercise Price
Options outstanding, beginning of period	₨ 1,175.65	₨ 1,063.79	₨ 899.03
Granted	1,425.69	1,427.29	1,235.8
Exercised	998.73	796.52	596.85
Forfeited	1,274.53	1,231.84	1,163.29
Lapsed	1,033.65	870.34	929.57
Options outstanding, end of period	1,264.86	1,175.65	1,063.79
Options exercisable, end of period	1,162.96	1,036.49	834.48
Weighted average fair value of options granted during the year	₨ 548.11	₨ 415.12	₨ 320.42

Activity in the RSU's outstandi

Activity in the RSU's outstanding under the various Employees' Stock Incentive Master Scheme (Detail) - 12 months ended Mar. 31, 2023 - Restricted Stock Units (RSUs) [Member]	₨ / shares shares	$ / shares ₨ / shares shares
Schedule of Restricted Stock Shares Activity [Line Items]
Weighted average fair value of RSUs granted during the year | $ / shares		$ 1
Employee Stock Incentive Master Scheme Two Thousand And Twenty Two [Member]
Schedule of Restricted Stock Shares Activity [Line Items]
RSUs outstanding, beginning of period | shares	0	0
Granted | shares	2,891,000	2,891,000
Exercised | shares	0	0
Forfeited | shares	0	0
Lapsed | shares	0	0
RSUs outstanding, end of period | shares	2,891,000	2,891,000
RSUs exercisable, end of period | shares	0	0
RSUs outstanding, beginning of period	₨ 0
Granted	1
Exercised	0
Forfeited	0
Lapsed	0
RSUs outstanding, end of period	1
RSUs exercisable, end of period	0	$ 0
Weighted average fair value of RSUs granted during the year	₨ 1,382.34

Stock Options Outstanding, Empl

Stock Options Outstanding, Employees Stock Option Schemes (Detail) - Employees Stock Option Scheme	12 Months Ended
	Mar. 31, 2023 ₨ / shares shares	Mar. 31, 2023 ₨ / shares $ / shares shares	Mar. 31, 2022 ₨ / shares shares	Mar. 31, 2021 ₨ / shares shares	Mar. 31, 2020 ₨ / shares shares
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number Of Shares Arising Out Of Options | shares	151,682,461	151,682,461	158,106,016	168,168,760	142,865,602
Weighted Average Exercise Price	₨ 1,264.86	₨ 1,264.86	₨ 1,175.65	₨ 1,063.79	₨ 899.03
Plan "F"
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price, Lower Range	₨ 716.6
Range of exercise price, Upper Range | $ / shares		₨ 8.72
Number Of Shares Arising Out Of Options | shares	7,449,626	7,449,626
Weighted Average Remaining Life	9 months 29 days	9 months 29 days
Weighted Average Exercise Price	₨ 716.6	₨ 716.6
Plan "G"
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of exercise price, Lower Range | (per share)	882.85	₨ 10.74
Range of exercise price, Upper Range | (per share)	₨ 1,673.1	₨ 20.36
Number Of Shares Arising Out Of Options | shares	144,232,835	144,232,835
Weighted Average Remaining Life	2 years 10 months 13 days	2 years 10 months 13 days
Weighted Average Exercise Price	₨ 1,293.2	₨ 1,293.2

RSUs outstanding, Employees Sto

RSUs outstanding, Employees Stock Incentive Master Scheme (Detail) - Restricted Stock Units (RSUs) [Member] - Employee Stock Incentive Master Scheme Two Thousand And Twenty Two - ₨ / shares	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Share Based Payment Arrangement Equity Instruments Other Than Options Exercise Price Range [Line Items]
Number of shares arising out of units	2,891,000	0
Weighted average remaining life (years)	3 years 7 days
Weighted average exercise price	₨ 1

RSUs outstanding, Employees S_2

RSUs outstanding, Employees Stock Incentive Master Scheme (Parenthetical) (Detail) - Mar. 31, 2023	₨ / shares	$ / shares
Restricted Stock Units (RSUs) [Member] | Employee Stock Incentive Master Scheme Two Thousand And Twenty Two
Share Based Payment Arrangement Equity Instruments Other Than Options Exercise Price Range [Line Items]
Share based compensation by share based award equity instruments other than options exercise price per share lower limit | (per share)	₨ 1	$ 0

Retirement Benefits - Additiona

Retirement Benefits - Additional Information (Detail) ₨ in Thousands, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)	Mar. 31, 2021 INR (₨)
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected contribution to the plan for the next fiscal year	₨ 1,824,100
Defined benefit plan, accumulated benefit obligation	8,294,700		₨ 6,914,800
Defined contribution plan, employer contribution recognized as an expense	₨ 8,238,200		6,844,700	₨ 5,429,600
Superannuation
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, employer annual contribution as a percentage of eligible annual salary	13%	13%
Defined contribution plan, employer contribution recognized as an expense	₨ 2,322,000		1,795,300	₨ 1,513,700
Superannuation | Managing Director, Executive Directors and for certain employees of CBoP
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, employer annual contribution as a percentage of eligible annual salary	(15.00%)	(15.00%)
Provident Fund
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, employer annual contribution as a percentage of eligible annual salary	12%	12%
Provident Fund Administered by Regional Provident Fund Commissioner
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan - contribution to Pension Scheme administered by Regional Provident Fund Commissioner, percentage considered - lower of the percentage of employees eligible salary or fixed amount	8.33%	8.33%
Provident Fund Administered by Regional Provident Fund Commissioner | Maximum
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	₨ 15
National Pension Scheme [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, employer contribution recognized as an expense	₨ 78,000		57,200
Gratuity
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, number of days of eligible salary payable for each completed year of service	15 days	15 days
Defined benefit plan, vesting period	15 years	15 years
Employer contributions	₨ 1,735,300	$ 21.1	1,633,000
Gratuity | Vested accumulated benefit obligation
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, accumulated benefit obligation	7,519,800		6,397,400
Pension
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected contribution to the plan for the next fiscal year	229,500
Defined benefit plan, accumulated benefit obligation	528,600		354,600
Employer contributions	₨ 111,800	$ 1.5	207,000
Defined benefit plan minimum service period needed for annuity offer	15 years	15 years
Pension | Centurion Bank of Punjab Limited
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, employer contribution as a percentage of basic salary	10%	10%
Pension | Centurion Bank of Punjab Limited | Minimum
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plan, Service period of employees for whom contribution made stand frozen and will be converted into an annuity on separation	10 years	10 years
Pension | Centurion Bank of Punjab Limited | Maximum
Defined Benefit Plan Disclosure [Line Items]
Defined benefit pension plan, Service period of employees for whom contribution made stand frozen and will be converted into an annuity on separation	15 years	15 years
Pension | Vested accumulated benefit obligation
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, accumulated benefit obligation	₨ 527,500		₨ 353,800

Funded Status of Gratuity Plan

Funded Status of Gratuity Plan and Amounts Recognized in Bank's Financial Statements (Detail) - Gratuity ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)	Mar. 31, 2021 INR (₨)	Mar. 31, 2023 USD ($)
Change in benefit obligations:
Projected benefit obligation ("PBO"), beginning of the period	₨ 10,688.7	$ 130.1	₨ 9,819.6
Service cost	1,398.6	17	1,268	₨ 1,107
Interest cost	773.4	9.4	631.2	561.6
Actuarial(gains)/ losses	(252.4)	(3.1)	(260.6)
Benefits paid	(1,116.7)	(13.6)	(769.5)
Projected benefit obligation, end of the period	11,491.6	139.8	10,688.7	9,819.6
Change in plan assets:
Fair value of plan assets, beginning of the period	10,019.3	121.9	8,344.6
Expected return on plan assets	668.2	8.1	574.1	448.4
Actuarial gains/(losses)	(390)	(4.7)	237.1
Actual return on plan assets	278.2	3.4	811.2
Employer contributions	1,735.3	21.1	1,633
Benefits paid	(1,116.7)	(13.6)	(769.5)
Fair value of plan assets, end of the period	10,916.1	$ 132.8	10,019.3	₨ 8,344.6
Funded Status	₨ (575.5)		₨ (669.4)		$ (7)

Net Gratuity Cost (Detail)

Net Gratuity Cost (Detail) - Gratuity ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)	Mar. 31, 2021 INR (₨)
Defined Benefit Plan Disclosure [Line Items]
Service cost	₨ 1,398.6	$ 17	₨ 1,268	₨ 1,107
Interest cost	773.4	9.4	631.2	561.6
Expected return on plan assets	(668.2)	(8.1)	(574.1)	(448.4)
Actuarial (gains)/losses	137.6	1.6	(497.7)	(463.6)
Net gratuity cost	₨ 1,641.4	$ 19.9	₨ 827.4	₨ 756.6

Assumptions Used in Accounting

Assumptions Used in Accounting for Gratuity Plan (Detail) - Gratuity		12 Months Ended
		Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Minimum
Defined Benefit Plan Disclosure [Line Items]
Discount rate - benefit obligations	[1]	5.10%	5.10%	4.40%
Discount rate - net periodic benefit cost	[1]	5.10%	5.10%	4.40%
Rate of increase in compensation levels of covered employees		6%	6%	5%
Rate of return on plan assets		5.10%	5.10%	4.40%
Maximum
Defined Benefit Plan Disclosure [Line Items]
Discount rate - benefit obligations	[1]	7.90%	7.30%	7%
Discount rate - net periodic benefit cost	[1]	7.90%	7.30%	7%
Rate of increase in compensation levels of covered employees		11%	11%	9%
Rate of return on plan assets		7.20%	7%	7%
[1]Weighted average assumptions used to determine both benefit obligations and net periodic benefit cost.

Benefit Payments, Gratuity (Det

Benefit Payments, Gratuity (Detail) - Gratuity ₨ in Millions	Mar. 31, 2023 INR (₨)
Benefit payments
2024	₨ 1,638.6
2025	1,352
2026	1,108.3
2027	966.1
2028	1,024.9
2029 - 2033	₨ 3,919.2

Plan Assets as Percentage of To

Plan Assets as Percentage of Total Funds (Detail) - Gratuity	Mar. 31, 2023
Funds managed by insurance company (1)
Defined Benefit Plan Disclosure [Line Items]
Plan asset as percentage of total funds	100%
Funds managed by insurance company (1) | Government Securities
Defined Benefit Plan Disclosure [Line Items]
Plan asset as percentage of total funds	81.30%
Funds managed by insurance company (1) | Debenture and bonds
Defined Benefit Plan Disclosure [Line Items]
Plan asset as percentage of total funds	9.70%
Funds managed by insurance company (1) | Equity securities
Defined Benefit Plan Disclosure [Line Items]
Plan asset as percentage of total funds	8.90%
Funds managed by insurance company (1) | Other
Defined Benefit Plan Disclosure [Line Items]
Plan asset as percentage of total funds	0.10%
Funds managed by insurance company (2)
Defined Benefit Plan Disclosure [Line Items]
Plan asset as percentage of total funds	100%
Funds managed by insurance company (2) | Government Securities
Defined Benefit Plan Disclosure [Line Items]
Plan asset as percentage of total funds	32.40%
Funds managed by insurance company (2) | Debenture and bonds
Defined Benefit Plan Disclosure [Line Items]
Plan asset as percentage of total funds	17.20%
Funds managed by insurance company (2) | Equity securities
Defined Benefit Plan Disclosure [Line Items]
Plan asset as percentage of total funds	43.90%
Funds managed by insurance company (2) | Other
Defined Benefit Plan Disclosure [Line Items]
Plan asset as percentage of total funds	6.50%
Funds managed by trust
Defined Benefit Plan Disclosure [Line Items]
Plan asset as percentage of total funds	100%
Funds managed by trust | Government Securities
Defined Benefit Plan Disclosure [Line Items]
Plan asset as percentage of total funds	26.10%
Funds managed by trust | Debenture and bonds
Defined Benefit Plan Disclosure [Line Items]
Plan asset as percentage of total funds	24.50%
Funds managed by trust | Equity securities
Defined Benefit Plan Disclosure [Line Items]
Plan asset as percentage of total funds	0%
Funds managed by trust | Other
Defined Benefit Plan Disclosure [Line Items]
Plan asset as percentage of total funds	49.40%

Funded Status of Pension Plan a

Funded Status of Pension Plan and Amounts Recognized in Bank's Financial Statements (Detail) - Pension ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)	Mar. 31, 2021 INR (₨)	Mar. 31, 2023 USD ($)
Change in benefit obligations:
Projected benefit obligation ("PBO"), beginning of the period	₨ 840.9	$ 10.3	₨ 862
Plan amendment (prior service cost)	0	0	76.9
Service cost	18.5	0.2	16.1
Interest cost	57.3	0.7	55.8	₨ 37.7
Actuarial (gains)/losses	221.4	2.7	34.4
Benefits paid	(120.1)	(1.5)	(204.3)
Projected benefit obligation, end of the period	1,018	12.4	840.9	862
Change in plan assets:
Fair value of plan assets, beginning of the period	8.7	0.1	3.3
Expected return on plan assets	0.4	0	0.4	3.2
Actuarial gains/(losses)	2.2	0	2.3
Actual return on plan assets	2.6	0	2.7
Employer contributions	111.8	1.5	207
Benefits paid	(120.1)	(1.5)	(204.3)
Fair value of plan assets, end of the period	3	$ 0.1	8.7	₨ 3.3
Funded Status	₨ (1,015)		₨ (832.2)		$ (12.3)

Net Pension Cost (Detail)

Net Pension Cost (Detail) - Pension ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)	Mar. 31, 2021 INR (₨)
Defined Benefit Plan Disclosure [Line Items]
Service cost	₨ 18.5	$ 0.2	₨ 93	₨ 14.6
Interest cost	57.3	0.7	55.8	37.7
Expected return on plan assets	(0.4)	0	(0.4)	(3.2)
Actuarial (gains)/losses	219.2	2.7	32.1	329.6
Net pension cost	₨ 294.6	$ 3.6	₨ 180.5	₨ 378.7

Assumptions Used in Accountin_2

Assumptions Used in Accounting for Pension Plan (Detail) - Pension		12 Months Ended
		Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Discount rate - net periodic benefit cost	[1]	7.90%	7.30%	7%
Rate of increase in compensation levels of covered employees		10%	7%	7%
Rate of return on plan assets		6.50%	6.50%	6.50%
[1]Weighted average assumptions used to determine both benefit obligations and net periodic benefit cost.

Benefit Payments, Pension (Deta

Benefit Payments, Pension (Detail) - Pension ₨ in Millions	Mar. 31, 2023 INR (₨)
Benefit payments
2024	₨ 110.7
2025	103.7
2026	77.8
2027	86.7
2028	92.9
2029 - 2033	₨ 766.6

Weighted-Average Asset Allocati

Weighted-Average Asset Allocation of Said Plan Assets for Pension Benefits (Detail) - Pension	Mar. 31, 2023
Funds managed by trust
Weighted-average asset allocation	100%
Government Securities
Funds managed by trust
Weighted-average asset allocation	90.10%
Debenture and bonds
Funds managed by trust
Weighted-average asset allocation	9.90%
Other
Funds managed by trust
Weighted-average asset allocation	0%

Plan Investment Assets for Grat

Plan Investment Assets for Gratuity Funds and Pension Fund Measured at Fair Value by Level and in Total (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Fair Value Measurements Using Quoted Prices In Active Markets for Identical Assets (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Plan investment assets at fair value	₨ 109.6	$ 1.3	₨ 111.1
Fair Value Measurements Using Quoted Prices In Active Markets for Identical Assets (Level 1) | Funds managed by insurance company (1)
Defined Benefit Plan Disclosure [Line Items]
Plan investment assets at fair value	0		0
Fair Value Measurements Using Quoted Prices In Active Markets for Identical Assets (Level 1) | Funds managed by insurance company (2)
Defined Benefit Plan Disclosure [Line Items]
Plan investment assets at fair value	0		0
Fair Value Measurements Using Quoted Prices In Active Markets for Identical Assets (Level 1) | Government Securities Managed by Trust
Defined Benefit Plan Disclosure [Line Items]
Plan investment assets at fair value	0		0
Fair Value Measurements Using Quoted Prices In Active Markets for Identical Assets (Level 1) | Debenture and Bonds Managed by Trust
Defined Benefit Plan Disclosure [Line Items]
Plan investment assets at fair value	0		0
Fair Value Measurements Using Quoted Prices In Active Markets for Identical Assets (Level 1) | Other Funds Managed by Trust
Defined Benefit Plan Disclosure [Line Items]
Plan investment assets at fair value	109.6		111.1
Fair Value Measurements Using Significant other observable inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Plan investment assets at fair value	9,945	121	9,137.1
Fair Value Measurements Using Significant other observable inputs (Level 2) | Funds managed by insurance company (1)
Defined Benefit Plan Disclosure [Line Items]
Plan investment assets at fair value	0		0
Fair Value Measurements Using Significant other observable inputs (Level 2) | Funds managed by insurance company (2)
Defined Benefit Plan Disclosure [Line Items]
Plan investment assets at fair value	9,829.4		9,016
Fair Value Measurements Using Significant other observable inputs (Level 2) | Government Securities Managed by Trust
Defined Benefit Plan Disclosure [Line Items]
Plan investment assets at fair value	60.8		68.1
Fair Value Measurements Using Significant other observable inputs (Level 2) | Debenture and Bonds Managed by Trust
Defined Benefit Plan Disclosure [Line Items]
Plan investment assets at fair value	54.8		53
Fair Value Measurements Using Significant other observable inputs (Level 2) | Other Funds Managed by Trust
Defined Benefit Plan Disclosure [Line Items]
Plan investment assets at fair value	0		0
Fair Value Measurements Using Significant unobservable inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Plan investment assets at fair value	864.5	$ 10.5	779.8
Fair Value Measurements Using Significant unobservable inputs (Level 3) | Funds managed by insurance company (1)
Defined Benefit Plan Disclosure [Line Items]
Plan investment assets at fair value	864.5		779.8
Fair Value Measurements Using Significant unobservable inputs (Level 3) | Funds managed by insurance company (2)
Defined Benefit Plan Disclosure [Line Items]
Plan investment assets at fair value	0		0
Fair Value Measurements Using Significant unobservable inputs (Level 3) | Government Securities Managed by Trust
Defined Benefit Plan Disclosure [Line Items]
Plan investment assets at fair value	0		0
Fair Value Measurements Using Significant unobservable inputs (Level 3) | Debenture and Bonds Managed by Trust
Defined Benefit Plan Disclosure [Line Items]
Plan investment assets at fair value	0		0
Fair Value Measurements Using Significant unobservable inputs (Level 3) | Other Funds Managed by Trust
Defined Benefit Plan Disclosure [Line Items]
Plan investment assets at fair value	₨ 0		₨ 0

Reconciliation of All Plan Inve

Reconciliation of All Plan Investment Assets Measured at Fair Value Using Significant Unobservable Inputs (Level 3) (Detail) - Plan investment funds managed by insurance companies ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Defined Benefit Plan Disclosure [Line Items]
Beginning balance	₨ 779.8	$ 9.5	₨ 664.1
Realized interest credited to fund	54.8	0.7	48.1
Contribution during the period	148.6	1.8	131.1
Amount paid towards claim	(118.7)	(1.5)	(63.5)
Ending Balance	₨ 864.5	$ 10.5	₨ 779.8

Aggregate Notional Principal Am

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	$ 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	919.7
Forward rate agreements
Derivatives, Fair Value [Line Items]
Notional	140,693	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	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		40,408.2
Net Fair Value	₨ 2,773.7	$ 33.7	₨ (2,652.8)

Information Related to Derivati

Information Related to Derivative Amounts Recognized in Income (Detail) ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)	Mar. 31, 2021 INR (₨)
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives gain/(loss), net	₨ 15,366.1	$ 187	₨ 1,422	₨ (3,253)
Interest rate derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives gain/(loss), net	5,921.5	72	3,207.7	773.9
Forward rate agreements
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives gain/(loss), net	(2)	0	1,374.1	205.9
Currency options
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives gain/(loss), net	1,200.3	14.6	167.3	1,191.1
Currency swaps
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives gain/(loss), net	1,609.1	19.6	(1,682)	(3,309.2)
Forward exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives gain/(loss), net	₨ 6,637.2	$ 80.8	₨ (1,645.1)	₨ (2,114.7)

Amounts Subject to Enforceable

Amounts Subject to Enforceable Netting Arrangements (Detail) ₨ in Millions, $ in Millions		Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Derivative [Line Items]
Derivative assets, gross amounts		₨ 121,749.4	$ 1,481.3	₨ 80,202.3
Derivative assets, amounts offset		0		0
Derivative assets, net amounts reported in the balance sheet		121,749.4		80,202.3
Derivative assets, financial instruments		73,045.2		48,942.8
Derivative assets, financial collateral	[1]	19,402.2		8,022.9
Derivative assets, net amount		29,302	356.5	23,236.6
Securities purchased under agreements to resell, gross amounts		455,275.4	5,539.3	373,053.3
Securities purchased under agreements to resell, amounts offset		0		0
Securities purchased under agreements to resell, net amounts reported in the balance sheet		455,275.4		373,053.3
Securities purchased under agreements to resell, financial instruments		0		0
Securities purchased under agreements to resell, financial collateral	[1]	455,275.4		373,053.3
Securities purchased under agreements to resell, net amount		0	0	0
Derivative liabilities, gross amounts		98,783.5	1,201.9	74,819.2
Derivative liabilities, amounts offset		0		0
Derivative liabilities, net amounts reported in the balance sheet		98,783.5		74,819.2
Derivative liabilities, financial instruments		73,045.2		48,942.8
Derivative liabilities, financial collateral	[1]	5,084.6		1,697.2
Derivative liabilities, net amount		20,653.7	251.3	24,179.2
Securities sold under repurchase agreements, gross amounts		0	0	151,844.9
Securities sold under repurchase agreements, amounts offset		0		0
Securities sold under repurchase agreements, net amounts reported in the balance sheet		0		151,844.9
Securities sold under repurchase agreements, financial instruments		0		0
Securities sold under repurchase agreements, financial collateral	[1]	0		151,844.9
Securities sold under repurchase agreements, net amount		0	0	0
Long Term debt , gross amounts		90,200		90,200
Long Term debt , Amounts offset		0		0
Long Term debt ,Net amounts reported in the balance sheet		90,200		90,200
Long Term debt , Financial instruments		0		0
Long Term debt , Financial collateral	[1]	90,200		90,200
Long Term debt , Net amount		₨ 0	$ 0	₨ 0
Derivative Asset, Statement of Financial Position [Extensible Enumeration]		Other assets	Other assets
Derivative Liability, Statement of Financial Position [Extensible Enumeration]		Accrued expenses and other liabilities	Accrued expenses and other liabilities
[1]Comprised of securities and cash collaterals. These amounts are limited to the asset/liability balance, and accordingly, do not include excess collateral received/pledged.

Financial Instruments - Additio

Financial Instruments - Additional Information (Detail) ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Financial Instruments [Line Items]
Estimated fair values of bank guarantees	₨ 7,911.1	$ 96.3	₨ 6,583.5
Margins in the form of cash and fixed deposit available to the bank to reimburse losses realized under guarantees	222,000		182,000
Outstanding Undrawn commitments to provide loans and financing to customers	372,300	4,500	730,900
Unconditional cancellable commitments	7,273,000	88,500	5,528,400
Guarantees
Financial Instruments [Line Items]
Estimated fair values of bank guarantees	₨ 7,041.8	$ 85.7	₨ 5,760.7
Minimum
Financial Instruments [Line Items]
Remaining tenure of guarantees outstanding	one day
Maximum
Financial Instruments [Line Items]
Remaining tenure of guarantees outstanding	24.7 years

Details of Guarantees and Docum

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
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	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)

Summary of allowance for Credit

Summary of allowance for Credit Losses included in accrued expenses and other liabilities on Off-Balance sheet credit exposures and undrawn commitments (Detail) ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Schedule Of Allowance For Credit Losses OnOff BalanceSheet Credit Exposures And Undrawn Commitments [Abstract]
Allowance for credit losses, beginning of the period	₨ 6,087.6	$ 74.1	₨ 5,581.5
Provision for credit exposures	(268.9)	(3.3)	506.1
Allowance for credit losses, end of the period	₨ 5,818.7	$ 70.8	₨ 6,087.6

Comparison of Fair Value and Ca

Comparison of Fair Value and Carrying Value of Financial Instruments (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)	Mar. 31, 2022 USD ($)	Mar. 31, 2021 INR (₨)	Mar. 31, 2020 INR (₨)
Financial Assets:
Cash and due from banks, and restricted cash	₨ 1,387,395.2	$ 16,880.3	₨ 1,122,031.1	$ 13,651.7	₨ 930,694.7	₨ 611,961
Investments held for trading	135,831.1	1,652.6	53,199.5
Investments available for sale debt securities	4,878,844	59,360.6	4,388,563.1
Securities purchased under agreements to resell	455,275.4	5,539.3	373,053.3
Loans	17,052,927.9	207,481.7	14,036,872.2
Accrued interest receivable	186,091.2	2,264.2	134,467.7
Other assets	1,292,086.7	15,720.7	686,475.6
Financial Liabilities :
Interest-bearing deposits	16,097,459.3	195,856.7	13,197,979.7
Non-interest-bearingdeposits	2,729,176.3	33,205.7	2,382,052.2
Securities sold under repurchase agreements	0	0	151,844.9
Short-term borrowings	1,089,897.5	13,260.7	554,167.6
Accrued interest payable	112,463.2	1,368.3	82,412.8
Long-term debt	2,054,436.4	24,996.2	1,554,333.4
Accrued expenses and other liabilities	567,643.6	6,906.5	499,905.7
Financial Assets:
Cash and due from banks, and restricted cash	1,387,395.2	16,880.3	1,122,031.1
Investments held for trading	135,831.1	1,652.6	53,199.5
Investments available for sale debt securities	4,878,844	59,360.6	4,388,563.1
Securities purchased under agreements to resell	455,275.4	5,539.3	373,053.3
Loans	17,165,284.8	208,848.8	14,288,248.9
Accrued interest receivable	186,091.2	2,264.2	134,467.7
Other assets	1,289,842.7	15,693.4	684,651.9
Financial Liabilities :
Securities sold under repurchase agreements	0	0	151,844.9
Short-term borrowings	1,088,380.5	13,242.2	552,737.9
Accrued interest payable	112,463.2	1,368.3	82,412.8
Long-term debt	2,045,541.9	24,888	1,554,540.2
Accrued expenses and other liabilities	567,643.6	6,906.5	499,905.7
Interest Bearing Deposits Liabilities
Financial Liabilities :
Interest-bearing deposits	16,102,822	195,921.9	13,240,403.7
Non-interest-bearing deposits
Financial Liabilities :
Interest-bearing deposits	2,729,176.3	$ 33,205.7	2,382,052.2
Fair Value Measurements Using Quoted Prices In Active Markets for Identical Assets (Level 1)
Financial Assets:
Investments held for trading	184.1		304.1
Investments available for sale debt securities	507,504.1		174,680.3
Financial Assets:
Cash and due from banks, and restricted cash	1,387,395.2		1,122,031.1
Investments held for trading	184.1		304.1
Investments available for sale debt securities	507,504.1		174,680.3
Securities purchased under agreements to resell	0		0
Loans	0		0
Accrued interest receivable	0		0
Other assets	3,313.7		3,889.8
Financial Liabilities :
Securities sold under repurchase agreements	0		0
Short-term borrowings	0		0
Accrued interest payable	0		0
Long-term debt	0		0
Accrued expenses and other liabilities	0		0
Fair Value Measurements Using Quoted Prices In Active Markets for Identical Assets (Level 1) | Interest Bearing Deposits Liabilities
Financial Liabilities :
Interest-bearing deposits	0		0
Fair Value Measurements Using Quoted Prices In Active Markets for Identical Assets (Level 1) | Non-interest-bearing deposits
Financial Liabilities :
Interest-bearing deposits	0		0
Fair Value Measurements Using Significant other observable inputs (Level 2)
Financial Assets:
Investments held for trading	135,647		52,895.4
Investments available for sale debt securities	4,222,904.3		4,069,988.1
Financial Assets:
Cash and due from banks, and restricted cash	0		0
Investments held for trading	135,647		52,895.4
Investments available for sale debt securities	4,222,904.3		4,069,988.1
Securities purchased under agreements to resell	455,275.4		373,053.3
Loans	4,138,188.7		3,311,277.1
Accrued interest receivable	186,091.2		134,467.7
Other assets	1,286,529		680,762.1
Financial Liabilities :
Securities sold under repurchase agreements	0		151,844.9
Short-term borrowings	1,088,380.5		552,737.9
Accrued interest payable	112,463.2		82,412.8
Long-term debt	2,045,541.9		1,554,540.2
Accrued expenses and other liabilities	567,643.6		499,905.7
Fair Value Measurements Using Significant other observable inputs (Level 2) | Interest Bearing Deposits Liabilities
Financial Liabilities :
Interest-bearing deposits	16,102,822		13,240,403.7
Fair Value Measurements Using Significant other observable inputs (Level 2) | Non-interest-bearing deposits
Financial Liabilities :
Interest-bearing deposits	2,729,176.3		2,382,052.2
Fair Value Measurements Using Significant unobservable inputs (Level 3)
Financial Assets:
Investments held for trading	0		0
Investments available for sale debt securities	148,435.6		143,894.7
Financial Assets:
Cash and due from banks, and restricted cash	0		0
Investments held for trading	0		0
Investments available for sale debt securities	148,435.6		143,894.7
Securities purchased under agreements to resell	0		0
Loans	13,027,096.1		10,976,971.8
Accrued interest receivable	0		0
Other assets	0		0
Financial Liabilities :
Securities sold under repurchase agreements	0		0
Short-term borrowings	0		0
Accrued interest payable	0		0
Long-term debt	0		0
Accrued expenses and other liabilities	0		0
Fair Value Measurements Using Significant unobservable inputs (Level 3) | Interest Bearing Deposits Liabilities
Financial Liabilities :
Interest-bearing deposits	0		0
Fair Value Measurements Using Significant unobservable inputs (Level 3) | Non-interest-bearing deposits
Financial Liabilities :
Interest-bearing deposits	₨ 0		₨ 0

Segment Information - Additiona

Segment Information - Additional Information (Detail)	12 Months Ended
	Mar. 31, 2023 Segment
Reportable segments	3

Summarized Segment Information

Summarized Segment Information (Detail) ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)	Mar. 31, 2021 INR (₨)	Mar. 31, 2023 USD ($)
Segment Reporting Information [Line Items]
Net interest income/(expense)	₨ 913,988.5	$ 11,120.5	₨ 748,839.5	₨ 683,686.5
Less: Provision for credit losses	74,213.8	903	126,979.5	154,233.4
Net interest revenue, after provision for credit losses	839,774.7	10,217.5	621,860	529,453.1
Non-interest revenue	291,386.5	3,545.1	270,574.2	252,975.7
Non-interest expense	(468,779.4)	(5,703.7)	(373,272)	(342,602.3)
Income before income tax expense	662,381.8	8,058.9	519,162.2	439,826.5
Income tax expense	166,117.4	2,021.1	132,559.2	113,820.1
Segment assets:
Segment total assets	25,755,624		21,113,705.5	17,979,782	$ 313,366.9
Operating Segments
Segment Reporting Information [Line Items]
Net interest income/(expense)	913,988.5	11,120.5	748,839.5	683,686.5
Intersegment Eliminations
Segment Reporting Information [Line Items]
Net interest income/(expense)	0	$ 0	0	0
Retail Banking
Segment Reporting Information [Line Items]
Net interest income/(expense)	643,295.7		559,824.2	537,763.5
Less: Provision for credit losses	86,920.2		122,622.6	145,822
Net interest revenue, after provision for credit losses	556,375.5		437,201.6	391,941.5
Non-interest revenue	252,576.6		203,468.5	175,447.7
Non-interest expense	(432,689.9)		(345,321.5)	(306,461.1)
Income before income tax expense	376,262.2		295,348.6	260,928.1
Segment assets:
Segment total assets	13,599,750.2		11,384,802.9	9,356,987.2
Retail Banking | Operating Segments
Segment Reporting Information [Line Items]
Net interest income/(expense)	474,489.5		418,823	361,343.5
Retail Banking | Intersegment Eliminations
Segment Reporting Information [Line Items]
Net interest income/(expense)	168,806.2		141,001.2	176,420
Wholesale Banking
Segment Reporting Information [Line Items]
Net interest income/(expense)	250,954.1		184,355	134,567.3
Less: Provision for credit losses	(12,706.4)		4,356.9	8,411.4
Net interest revenue, after provision for credit losses	263,660.5		179,998.1	126,155.9
Non-interest revenue	42,286.9		55,813.2	72,420.1
Non-interest expense	(34,261.7)		(25,544.1)	(34,238.4)
Income before income tax expense	271,685.7		210,267.2	164,337.6
Segment assets:
Segment total assets	9,274,409.1		8,106,671	7,011,959.9
Wholesale Banking | Operating Segments
Segment Reporting Information [Line Items]
Net interest income/(expense)	367,857.6		297,694	278,431
Wholesale Banking | Intersegment Eliminations
Segment Reporting Information [Line Items]
Net interest income/(expense)	(116,903.5)		(113,339)	(143,863.7)
Treasury Services
Segment Reporting Information [Line Items]
Net interest income/(expense)	19,738.7		4,660.3	11,355.7
Less: Provision for credit losses	0		0	0
Net interest revenue, after provision for credit losses	19,738.7		4,660.3	11,355.7
Non-interest revenue	(3,477)		11,292.5	5,107.9
Non-interest expense	(1,827.8)		(2,406.4)	(1,902.8)
Income before income tax expense	14,433.9		13,546.4	14,560.8
Segment assets:
Segment total assets	2,881,464.7		1,622,231.6	1,610,834.9
Treasury Services | Operating Segments
Segment Reporting Information [Line Items]
Net interest income/(expense)	71,641.4		32,322.5	43,912
Treasury Services | Intersegment Eliminations
Segment Reporting Information [Line Items]
Net interest income/(expense)	₨ (51,902.7)		₨ (27,662.2)	₨ (32,556.3)

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Loss Contingencies [Line Items]
Capital commitments, estimated amounts of contracts remaining to be executed on the capital account	₨ 25,666		₨ 21,115.5
Additional operating lease commitments with leases which have not yet commenced	845.5
Operating lease expense	₨ 16,164.9	$ 196.7	14,295.7
Minimum [Member]
Loss Contingencies [Line Items]
Additional operating lease commitments with leases which have not yet commenced, lease term	9 years
Maximum [Member]
Loss Contingencies [Line Items]
Additional operating lease commitments with leases which have not yet commenced, lease term	21 years
Indirect Taxes And Other Claims
Loss Contingencies [Line Items]
Contingencies, estimated possible loss	₨ 9,456.9		₨ 9,226

Summary Of Operating Lease Righ

Summary Of Operating Lease Right Of Use Assets And Lease Liability (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Lease liabilities	₨ 97,658.9	$ 1,188.2	₨ 78,138
Other Assets [Member]
Right-of-use assets	₨ 89,989.3	$ 1,094.9	₨ 71,572.2

Rental Expenses and Sub-Lease I

Rental Expenses and Sub-Lease Income (Detail) ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)	Mar. 31, 2021 INR (₨)
Operating Leased Assets [Line Items]
The total minimum lease expense during the year recognized in the consolidated statement of income	₨ 17,591.4	$ 214	₨ 13,866.6	₨ 14,244.4

Future Minimum Lease Payments (

Future Minimum Lease Payments (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Operating Leased Assets [Line Items]
2024	₨ 15,081.4	$ 183.5
2025	14,631	178
2026	14,527.2	176.8
2027	14,041.9	170.8
2028	13,236.8	161.1
Thereafter	71,890.1	874.7
Total lease payments	143,408.4	1,744.9
Less: imputed interest	45,749.5	556.6
Total operating lease liabilities	₨ 97,658.9	$ 1,188.2	₨ 78,138
Weighted average remaining lease term (in years)	9 years 10 months 24 days	9 years 10 months 24 days
Weighted average discount rate	7.10%	7.10%

Movement in Provision for Credi

Movement in Provision for Credit Card and Debit Card Reward Points (Detail) - Debit and Credit Cards Reward Points ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Valuation and Qualifying Accounts Disclosure [Line Items]
Opening provision of reward points	₨ 6,359.1	$ 77.4	₨ 6,387.9
Provision made during the year	5,537.3	67.4	4,651.3
Utilization/write back of provision	(4,901.3)	(59.6)	(4,137.7)
Closing provision of reward points	6,963.2	84.8	6,359.1
Change in Rate of Accrual of Reward Points
Valuation and Qualifying Accounts Disclosure [Line Items]
Effect of change in rate of accrual of points/cost of reward	₨ (31.9)	$ (0.4)	₨ (542.4)

Balances Payable to Related Par

Balances Payable to Related Parties (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Related Party Transaction [Line Items]
Balances in non-interest-bearing deposits	₨ 2,729,176.3	$ 33,205.7	₨ 2,382,052.2
Balances in interest-bearing deposits	16,097,459.3	195,856.7	13,197,979.7
Principal Owner
Related Party Transaction [Line Items]
Balances in non-interest-bearing deposits	25,637.8		20,695.1
Balances in interest-bearing deposits	1,755.1		6,719.8
Accrued expenses and other liabilities	773.5		641.4
Total	28,166.4		28,056.3
Others
Related Party Transaction [Line Items]
Balances in non-interest-bearing deposits	8,715.1		6,273
Balances in interest-bearing deposits	1,611.9		875
Accrued expenses and other liabilities	0		0
Total	10,327		7,148
Related Party
Related Party Transaction [Line Items]
Balances in non-interest-bearing deposits	34,352.9	418	26,968.1
Balances in interest-bearing deposits	3,367	41	7,594.8
Accrued expenses and other liabilities	773.5	9.4	641.4
Total	₨ 38,493.4	$ 468.4	₨ 35,204.3

Balances Receivable from Relate

Balances Receivable from Related Parties (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Related Party Transaction [Line Items]
Loans	₨ 7.5	$ 0.1	₨ 7.4
Other assets	2,915.3	35.5	2,155.2
Total	2,922.8	$ 35.6	2,162.6
Principal Owner
Related Party Transaction [Line Items]
Loans	0		0
Other assets	748		656.5
Total	748		656.5
Others
Related Party Transaction [Line Items]
Loans	7.5		7.4
Other assets	2,167.3		1,498.7
Total	₨ 2,174.8		₨ 1,506.1

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)	Mar. 31, 2021 INR (₨)	Mar. 31, 2023 USD ($)
Related Party Transaction [Line Items]
Purchase of investments from others	₨ 256.8		₨ 2,006.2
Sale of investments from others	20,447.7		28,877.9
Proceeds from issuance of long-term debt	1,022,933.1	$ 12,446	722,908.9	₨ 481,989.2
Dividend paid to principal owner	86,394.3	$ 1,051.2	36,239.2	₨ 166.6
Foreign exchange and derivative contracts, notional principal amount	15,796,689		12,488,223.5		$ 192,197.2
Bank guarantees	1,628,699.8		1,455,273		$ 19,816.3
Tier II bonds
Related Party Transaction [Line Items]
Proceeds from issuance of long-term debt	7,850		3,700
Principal Owner
Related Party Transaction [Line Items]
Loans purchased from principal owner	369,101.3		282,052.4
Dividend paid to principal owner	13,401.5		5,620
Foreign exchange and derivative contracts, notional principal amount	94,451.2		111,787.1
Foreign exchange and derivative contracts, mark to market gains	2,081.2		1,101.1
Bank guarantees	3.5		3.9
Principal Owner | Property Plant and equipment
Related Party Transaction [Line Items]
Fixed assets purchased from related parties	0		0
Others
Related Party Transaction [Line Items]
Bank guarantees	₨ 5.1		₨ 28

Significant Transactions with R

Significant Transactions with Related Parties Included in Determination of Net Income (Detail) ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)	Mar. 31, 2021 INR (₨)
Related Party Transaction [Line Items]
Interest expense-Deposits	₨ (701.4)	$ (8.5)	₨ (286.5)	₨ (279.3)
Non-Interest Revenue-Fees and Commissions
Related Party Transaction [Line Items]
Related party transaction revenues	32,654.8	397.3	27,578.8	23,048.1
Interest and Dividend Revenue
Related Party Transaction [Line Items]
Related party transaction revenues	0.1	0	0.1	552.5
Administrative and other expense
Related Party Transaction [Line Items]
Related party transaction non-interest expense	(14,155.9)	(172.2)	(11,741.3)	(8,730.7)
Premises and equipment expense
Related Party Transaction [Line Items]
Related party transaction non-interest expense	(15.6)	$ (0.2)	(19.2)	(29.5)
Principal Owner
Related Party Transaction [Line Items]
Interest expense-Deposits	(95.3)		(204.3)	(108)
Principal Owner | Non-Interest Revenue-Fees and Commissions
Related Party Transaction [Line Items]
Related party transaction revenues	5,888.2		4,639.3	3,246.5
Principal Owner | Interest and Dividend Revenue
Related Party Transaction [Line Items]
Related party transaction revenues	0		0	0
Principal Owner | Administrative and other expense
Related Party Transaction [Line Items]
Related party transaction non-interest expense	(8,631.1)		(7,182.4)	(5,874.4)
Principal Owner | Premises and equipment expense
Related Party Transaction [Line Items]
Related party transaction non-interest expense	(15.6)		(19.2)	(24.3)
Others
Related Party Transaction [Line Items]
Interest expense-Deposits	(606.1)		(82.2)	(171.3)
Others | Non-Interest Revenue-Fees and Commissions
Related Party Transaction [Line Items]
Related party transaction revenues	26,766.6		22,939.5	19,801.6
Others | Interest and Dividend Revenue
Related Party Transaction [Line Items]
Related party transaction revenues	0.1		0.1	552.5
Others | Administrative and other expense
Related Party Transaction [Line Items]
Related party transaction non-interest expense	(5,524.8)		(4,558.9)	(2,856.3)
Others | Premises and equipment expense
Related Party Transaction [Line Items]
Related party transaction non-interest expense	₨ 0		₨ 0	₨ (5.2)

Earnings Per Equity Share - Add

Earnings Per Equity Share - Additional Information (Detail)			12 Months Ended
	Jun. 18, 2021 ₨ / shares	Apr. 22, 2021	Mar. 31, 2023 ₨ / shares shares	Mar. 31, 2023 ₨ / shares $ / shares shares	Mar. 31, 2022 ₨ / shares shares	Mar. 31, 2021 ₨ / shares shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Required transfer of after tax Indian GAAP profit to a non-distributable statutory reserve in order to pay dividends without prior RBI approval			25%	25%
Dividends declared | ₨ / shares			₨ 15.5	₨ 15.5	₨ 6.5
Dividends declared per equity share | (per share)	₨ 6.5		₨ 19	₨ 0.23	₨ 15.5	₨ 6.5
Employees Stock Option Scheme
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potential equity shares excluded from the calculation of diluted earnings per share, average outstanding balance | shares			49,152,741	49,152,741	19,064,987	73,917,840
Indian GAAP [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Dividend payout, description of restrictions			As per the RBI guidelines, the dividend payout cannot exceed 35% of net income as calculated under Indian GAAP.	As per the RBI guidelines, the dividend payout cannot exceed 35% of net income as calculated under Indian GAAP.
Indian GAAP [Member] | Maximum
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Dividend payout, maximum pay out as a percentage of net income calculated under Indian GAAP		50%	35%	35%

Weighted Average Number of Equi

Weighted Average Number of Equity Shares Used in Computing Earnings Per Equity Share (Detail) - shares	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Schedule of Weighted Average Number of Diluted Shares Outstanding [Line Items]
Weighted average number of equity shares used in computing basic earnings per equity share	5,565,620,562	5,533,113,800	5,499,587,357
Effect of potential equity shares for stock options outstanding	21,552,766	30,366,023	23,890,989
Weighted average number of equity shares used in computing diluted earnings per equity share	5,587,173,328	5,563,479,823	5,523,478,346

Reconciliations of Basic and Di

Reconciliations of Basic and Diluted Earnings Per Equity Share and Earnings per American Depositary Shares (Detail)	12 Months Ended
	Mar. 31, 2023 ₨ / shares	Mar. 31, 2023 $ / shares	Mar. 31, 2022 ₨ / shares	Mar. 31, 2021 ₨ / shares
Earnings Per Share Disclosure [Line Items]
Basic earnings per share | (per share)	₨ 89.02	$ 1.08	₨ 69.76	₨ 59.27
Effect of potential equity shares for stock options outstanding | (per share)	0.34	0.01	0.38	0.25
Diluted earnings per share | (per share)	88.68	1.07	69.38	59.02
Basic earnings per share | (per share)	267.06	3.24	209.28	177.81
Diluted earnings per share | (per share)	266.04	3.21	208.14	177.06
American Depository Shares | Stock Compensation Plan
Earnings Per Share Disclosure [Line Items]
Effect of potential equity shares for stock options outstanding | (per share)	₨ 1.02	$ 0.03	₨ 1.14	₨ 0.75

Subsidiaries - Additional Infor

Subsidiaries - Additional Information (Detail)	Mar. 31, 2023	Mar. 31, 2022
HDFC Securities Ltd.
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
The stake-holding of the Bank	95.80%	96.20%
HDB Financial Services Limited
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
The stake-holding of the Bank	95.40%	95.50%

Investments Measured at Fair Va

Investments Measured at Fair Value on Recurring Basis (Detail) ₨ in Millions, $ in Millions		Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account securities		₨ 135,831.1	$ 1,652.6	₨ 53,199.5
Securities Available-for-Sale		4,878,844	59,360.6	4,388,563.1
Fair Value Measurements Using Quoted Prices In Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account securities		184.1		304.1
Securities Available-for-Sale		507,504.1		174,680.3
Fair Value Measurements Using Significant other observable inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account securities		135,647		52,895.4
Securities Available-for-Sale		4,222,904.3		4,069,988.1
Fair Value Measurements Using Significant unobservable inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account securities		0		0
Securities Available-for-Sale		148,435.6		143,894.7
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account securities		135,831.1		53,199.5
Securities Available-for-Sale		4,878,844		4,388,563.1
Equity securities	[1]	19,462.6		12,070.8
Total		5,034,137.7	61,250	4,453,833.4
Fair Value, Measurements, Recurring | Fair Value Measurements Using Quoted Prices In Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account securities		184.1		304.1
Securities Available-for-Sale		507,504.1		174,680.3
Equity securities	[1]	3,313.7		3,889.8
Total		511,001.9	6,217.3	178,874.2
Fair Value, Measurements, Recurring | Fair Value Measurements Using Significant other observable inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account securities		135,647		52,895.4
Securities Available-for-Sale		4,222,904.3		4,069,988.1
Equity securities	[1]	16,148.9		8,181
Total		4,374,700.2	53,226.7	4,131,064.5
Fair Value, Measurements, Recurring | Fair Value Measurements Using Significant unobservable inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading account securities		0		0
Securities Available-for-Sale		148,435.6		143,894.7
Equity securities	[1]	0		0
Total		₨ 148,435.6	$ 1,806	₨ 143,894.7
[1]Equity securities classified within other assets.

Information about Changes in Fa

Information about Changes in Fair Value of Level 3 Assets (Detail) - Available-for-Sale Debt Securities - INR (₨) ₨ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	₨ 143,894.7	₨ 161,163.9
Total gains or losses (realized/unrealized) — Included in net income	0	0
Total gains or losses (realized/unrealized) — Included in other comprehensive income	(2,776.3)	(2,841.2)
Purchases/additions	110,969.4	77,995.6
Sales	0	0
Issuances	0	0
Settlements	(103,652.2)	(92,423.6)
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Foreign currency translation adjustment	0	0
Ending Balance	148,435.6	143,894.7
Total amount of gains/ (losses) included in net income attributable to change in unrealized gains/ (losses) relating to assets still held at reporting date	0	0
Change in unrealized gains/ (losses) for the period included in other comprehensive income for assets held at the end of the reporting period	₨ (1,867.6)	₨ (3,055.8)

Derivative Instruments Measured

Derivative Instruments Measured at Fair Value on Recurring Basis (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2023 INR (₨)	Mar. 31, 2023 USD ($)	Mar. 31, 2022 INR (₨)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	₨ 121,749.4	$ 1,481.3	₨ 80,202.3
Derivative liabilities	98,783.5	$ 1,201.9	74,819.2
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	121,749.4		80,202.3
Derivative liabilities	98,783.5		74,819.2
Fair Value, Measurements, Recurring | Fair Value Measurements Using Quoted Prices In Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0		0
Derivative liabilities	0		0
Fair Value, Measurements, Recurring | Fair Value Measurements Using Significant other observable inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	121,749.4		80,202.3
Derivative liabilities	98,783.5		74,819.2
Fair Value, Measurements, Recurring | Fair Value Measurements Using Significant unobservable inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	0		0
Derivative liabilities	₨ 0		₨ 0

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail) ₨ / shares in Units, ₨ in Millions	Apr. 15, 2023 INR (₨) ₨ / shares	Mar. 31, 2023 ₨ / shares	Apr. 04, 2022 ₨ / shares	Mar. 31, 2022 ₨ / shares
Subsequent Event [Line Items]
Common stock par or stated value per share		₨ 1		₨ 1
Proposed Merger [Member]
Subsequent Event [Line Items]
Common stock par or stated value per share			₨ 1
Proposed Merger [Member] | HDBHousing Development Finance Corporation Limited [Member]
Subsequent Event [Line Items]
Business combination share exchange ratio			1.68
Common stock par or stated value per share			₨ 2
Dividend Paid [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Dividend paid, per share amount	₨ 19
Dividend paid, total amount | ₨	₨ 106,015.1