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Other Key Disclosures (Detail) - Finance Receivable Held by Special Purpose Entities, Transferees ₨ in Millions, $ in Millions		Mar. 31, 2015 INR (₨)	Mar. 31, 2015 USD ($)	Mar. 31, 2014 INR (₨)
Securitization or Asset-backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items]
Transferred receivables with continuing involvement	[1]	₨ 1,670.3	$ 26.8	₨ 2,250.7
Delinquencies		296.0	4.8	240.4
Credit losses		220.5	3.5	173.5
Retained interest in sold receivables		₨ 64.3	$ 1.0	₨ 102.7
[1] Includes less than Rs. 0.1 million held by SPEs as of March 31, 2014 and nil as of March 31, 2015.

X

- Definition

For loans and debt securities, 1) for which at acquisition it was probable that the investor would be unable to collect all contractually required payments receivable, and 2) for which it is further probable that the investor will not be able to collect all cash flows expected at acquisition (plus any additional cash flows expected due to changes in estimate after acquisition), the allowance for credit losses recorded to reflect the impairment since acquisition.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 310



-SubTopic 10



-Section 50



-Paragraph 18



-URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5275-111524

+ Details

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Balance Type:	credit
Period Type:	instant

X

- Definition

Principal amount of transferred financial assets in which the transferor has continuing involvement with the assets underlying the transaction. Continuing involvement includes, but is not limited to, servicing, recourse, and restrictions on transferor's interests in transferred financial assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 860



-SubTopic 20



-Section 50



-Paragraph 4



-Subparagraph (a)(1)



-URI http://asc.fasb.org/extlink&oid=51814546&loc=d3e107314-111719

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Period Type:	instant

X

- Definition

The carrying amount (fair value) as of the balance sheet date of the transferor's interests in transferred financial assets (typically securitized receivables, generally not involved in the collection of principal) following transfer of significant portions of such financial instruments to other parties. Such interests could be ancillary cash flows and interest-only strips.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 860



-SubTopic 20



-Section 50



-Paragraph 4



-Subparagraph (a)(3)



-URI http://asc.fasb.org/extlink&oid=51814546&loc=d3e107314-111719

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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.

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X

- Definition

This is the amount of the financial instruments that are considered delinquent (past due) at the end of the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 860



-SubTopic 20



-Section 50



-Paragraph 4



-Subparagraph (e)(4)



-URI http://asc.fasb.org/extlink&oid=51814546&loc=d3e107314-111719

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- Details

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