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Maturity of Gross Loans (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2024 INR (₨)	Mar. 31, 2024 USD ($)	Mar. 31, 2023 INR (₨)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	₨ 26,793,047.4	$ 321,490.8	₨ 17,418,092.4
Wholesale loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	7,202,639.3	86,424.7	5,911,512.1
Retail loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross loans	19,590,408.1	235,066.1	₨ 11,506,580.3
Gross Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Within one year	6,203,404.9
Over one year through five years	13,668,029.7
Over five years	6,921,612.8
Total gross loans	26,793,047.4	321,490.8
Gross Loans | Wholesale loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Within one year	2,011,692.4
Over one year through five years	3,675,651.9
Over five years	1,515,295.0
Total gross loans	7,202,639.3	86,424.7
Gross Loans | Retail loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Within one year	4,191,712.5
Over one year through five years	9,992,377.8
Over five years	5,406,317.8
Total gross loans	₨ 19,590,408.1	$ 235,066.1

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Financing Receivable Before Allowance For Credit Loss Maturity After Year Five.

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- Definition

Amortized cost, before allowance for credit loss, fee, and loan in process, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-5

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481990/310-10-45-2

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(7))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1

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- Definition

Amount, before allowance for credit loss, of financing receivable maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1404
-Paragraph (a)
-Subparagraph (2)
-Publisher SEC

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Amount, before allowance for credit loss, of financing receivable maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1404
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-Publisher SEC

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