XML 72 R63.htm IDEA: XBRL DOCUMENT v3.23.2

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%	21.00%

X

- Definition

Nature Of Business [Line Items]

+ References

No definition available.

+ Details

Name:	hdb_NatureOfBusinessLineItems
Namespace Prefix:	hdb_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage investment held by members or limited partners of limited liability company (LLC) or limited partnership (LP).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

+ Details

Name:	us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_OwnershipAxis=hdb_HousingDevelopmentFinanceCorporationLimitedMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: