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Troubled Debt Restructurings Modifications (Detail) - INR (₨)
₨ in Millions

12 Months Ended

Mar. 31, 2020

Mar. 31, 2021

Retail Loans

Financing Receivable, Troubled Debt Restructuring [Line Items]

TDR modifications carrying value

₨ 0.0

Retail Loans | Retail Business Banking

Financing Receivable, Troubled Debt Restructuring [Line Items]

TDR modifications carrying value

^[1]

₨ 964.1

Balance of Principal Forgiven

^[1]

0.0

Net P&L impact

^[1],[2]

43.1

Commercial vehicle and construction equipment finance

Financing Receivable, Troubled Debt Restructuring [Line Items]

TDR modifications carrying value

0.0

Balance of Principal Forgiven

0.0

Net P&L impact

^[2]

0.0

Wholesale loans

Financing Receivable, Troubled Debt Restructuring [Line Items]

TDR modifications carrying value

0.0

Balance of Principal Forgiven

0.0

Financing Receivable Troubled Debt Restructurings Changes in Amount of Principal Payments | Retail Loans | Retail Business Banking

Financing Receivable, Troubled Debt Restructuring [Line Items]

TDR modifications carrying value

^[3]

0.0

Financing Receivable Troubled Debt Restructurings Changes in Amount of Principal Payments | Commercial vehicle and construction equipment finance

Financing Receivable, Troubled Debt Restructuring [Line Items]

TDR modifications carrying value

^[3]

0.0

Financing Receivable Troubled Debt Restructurings Changes in Amount of Principal Payments | Wholesale loans

Financing Receivable, Troubled Debt Restructuring [Line Items]

TDR modifications carrying value

^[3]

0.0

Financing Receivable Troubled Debt Restructurings Changes in Amount of Interest Payments | Retail Loans | Retail Business Banking

Financing Receivable, Troubled Debt Restructuring [Line Items]

TDR modifications carrying value

^[1],[4]

964.1

Financing Receivable Troubled Debt Restructurings Changes in Amount of Interest Payments | Commercial vehicle and construction equipment finance

Financing Receivable, Troubled Debt Restructuring [Line Items]

TDR modifications carrying value

^[4]

0.0

Financing Receivable Troubled Debt Restructurings Changes in Amount of Interest Payments | Wholesale loans

Financing Receivable, Troubled Debt Restructuring [Line Items]

TDR modifications carrying value

^[4]

0.0

Financing Receivable Troubled Debt Restructurings Changes in Amount of Principal and Interest Payments | Retail Loans | Retail Business Banking

Financing Receivable, Troubled Debt Restructuring [Line Items]

TDR modifications carrying value

0.0

Financing Receivable Troubled Debt Restructurings Changes in Amount of Principal and Interest Payments | Commercial vehicle and construction equipment finance

Financing Receivable, Troubled Debt Restructuring [Line Items]

TDR modifications carrying value

0.0

Financing Receivable Troubled Debt Restructurings Changes in Amount of Principal and Interest Payments | Wholesale loans

Financing Receivable, Troubled Debt Restructuring [Line Items]

TDR modifications carrying value

₨ 0.0

[1]	TDR modification during the year ended March 31, 2020 comprised of 13 cases.
[2]	Balances reflect charge-offs and/or allowance for credit losses and/or income not recognized/deferred.
[3]	TDRs involving changes in the amount of principal payment may include principal forgiveness or deferral of periodic and/or final principal payments.
[4]	TDRs involving changes in the amount of interest payments may involve a reduction in interest rate.

X

- Definition

Amount of increase (decrease) in allowance for credit loss on financing receivable.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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X

- Definition

Amount of financing receivable modified as troubled debt restructuring.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953676-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=121585226&loc=d3e18845-111554

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X

- Definition

Reflects the amount of the write-down related to a troubled debt restructuring.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=121585226&loc=d3e18845-111554

+ Details

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- Details

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- Details

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- Details

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