Loans Charge Off Description

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- Definition

Significant Accounting Policies [Line Items]

+ References

No definition available.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Threshold period for when financing receivable is considered past due to write off as uncollectible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 14
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- Definition

Foreign exchange rate used to translate amounts denominated in functional currency to reporting currency.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section S99
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-URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32618-110901

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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8672-108599

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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
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- Definition

Indicates line item in statement of financial position that includes operating lease liability.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 2
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- Definition

Amount of lessee's right to use underlying asset under operating lease.

+ References

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-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
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- Definition

The number of units or percentage investment held in the subsidiary by the limited liability company or limited partnership.

+ References

No definition available.

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Summary of Significant Accounting Policies - Additional Information (Detail) ₨ in Millions, $ in Millions	12 Months Ended
	Mar. 31, 2020 INR (₨) Segment	Mar. 31, 2020 USD ($)	Apr. 01, 2019 INR (₨)	Mar. 31, 2019 INR (₨)
Significant Accounting Policies [Line Items]
Reportable segments \| Segment	3
Lease liability, approximate	₨ 65,615.1	$ 870.3		₨ 0.0
ROU asset, approximate	₨ 60,756.9	$ 805.9		0.0
Financial statements translation rate, Indian rupees (Rs.) equivalence of U.S. $1	75.39	75.39
Operating Lease, Liability, Statement of Financial Position [Extensible List]	us-gaap:OperatingLeaseLiability	us-gaap:OperatingLeaseLiability
ASU 2016-02
Significant Accounting Policies [Line Items]
Lease liability, approximate			₨ 56,900.0	0.0
ROU asset, approximate			₨ 53,000.0	₨ 0.0
Retail Loans \| Personal Loans, Credit Card Receivables, Auto Loans, Commercial Vehicle and Construction Equipment Finance
Significant Accounting Policies [Line Items]
Loans charge off period	150 days	150 days
Retail Loans \| Housing loans
Significant Accounting Policies [Line Items]
Loans charge off period	720 days	720 days
Retail Loans \| Retail Business Banking
Significant Accounting Policies [Line Items]
Loans charge off period	customer by customer basis
Minimum
Significant Accounting Policies [Line Items]
Bank voting rights	20.00%	20.00%
Minimum \| Retail Loans
Significant Accounting Policies [Line Items]
Loans charge off period	150 days	150 days
Maximum
Significant Accounting Policies [Line Items]
Bank voting rights	50.00%	50.00%
Maximum \| Retail Loans
Significant Accounting Policies [Line Items]
Loans charge off period	1083 days	1083 days
HDFC Group [Member] \| Minimum
Significant Accounting Policies [Line Items]
Percentage of voting rights in which bank consolidates subsidiary	50.00%