XML 114 R104.htm IDEA: XBRL DOCUMENT v3.21.2

Long-Term Debt - Additional Information (Detail) ₨ in Millions, $ in Millions		12 Months Ended
		Mar. 31, 2021 INR (₨)	Mar. 31, 2020 INR (₨)	Mar. 31, 2021 USD ($)
Debt Instrument [Line Items]
Subordinated debt, debt raised during the year		₨ 3,565.0	₨ 5,435.0
Other long term debt, debt raised during the year		478,424.2	264,669.7
Perpetual debt, debt raised during the year		0.0	2,000.0
Other long-term debt	[1]	964,014.9	808,222.0	$ 13,180.4
Foreign currency borrowings
Debt Instrument [Line Items]
Other long-term debt		51,188.9	59,392.3
Functional currency borrowings
Debt Instrument [Line Items]
Other long-term debt		₨ 912,826.0	₨ 748,829.7
[1] Includes securities sold under repurchase agreements amounting to Rs. 17,260.0 million with stated interest rate of 5.15% per annum and Rs. 90,200.0 (USD 1,233.3 million) with stated interest rate of 4.0% per annum for the year ended March 31, 2020 and March 31, 2021, respectively, under RBI long-term repo operation with a three- year maturity period.

X

- Definition

Proceeds from issuance of perpetual debt.

+ References

No definition available.

+ Details

Name:	hdb_ProceedsFromIssuanceOfPerpetualDebt
Namespace Prefix:	hdb_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of long-term debt classified as other.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

+ Details

Name:	us-gaap_OtherLongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of cash inflow from issuance of long-term debt classified as other.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585

+ Details

Name:	us-gaap_ProceedsFromIssuanceOfOtherLongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The cash inflow from a borrowing where a lender is placed in a lien position behind debt having a higher priority of repayment (senior) in liquidation of the entity's assets or underlying collateral.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585

+ Details

Name:	us-gaap_ProceedsFromIssuanceOfSubordinatedLongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_DebtInstrumentAxis=hdb_ForeignLongTermDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=hdb_DomesticLongTermDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: