XML 155 R144.htm IDEA: XBRL DOCUMENT v3.7.0.1

Information Related to Derivative Amounts Recognized in Income (Detail) ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2017 INR (₨)	Mar. 31, 2017 USD ($)	Mar. 31, 2016 INR (₨)	Mar. 31, 2015 INR (₨)
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives gain/(loss), net	₨ (5,738.5)	$ (88.5)	₨ 15,067.2	₨ (7,393.0)
Interest rate derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives gain/(loss), net	399.3	6.2	(1,063.1)	(383.4)
Forward rate agreements
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives gain/(loss), net	1.2	0.0	2.1	3.0
Currency options
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives gain/(loss), net	677.7	10.4	413.4	303.0
Currency swaps
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives gain/(loss), net	(2,453.4)	(37.8)	829.5	151.3
Forward exchange contracts
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives gain/(loss), net	₨ (4,363.3)	$ (67.3)	₨ 14,885.3	₨ (7,466.9)

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

X

- Definition

Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5618551-113959

+ Details

Name:	us-gaap_GainLossOnDerivativeInstrumentsNetPretax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateContractMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=hdb_ForwardRateAgreementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForeignExchangeOptionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_CurrencySwapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForeignExchangeForwardMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: