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Grading Indicators Related to Bank's Retail Loans and Wholesale Loans (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2015 INR (₨)	Mar. 31, 2015 USD ($)	Mar. 31, 2014 INR (₨)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	₨ 3,943,449.1	$ 63,287.5	₨ 3,228,261.3
Performing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	3,904,124.3	62,656.4	3,198,574.8
Retail Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	2,720,988.5	43,668.5	2,188,337.7
Retail Loans | Performing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	2,695,153.3		2,167,409.4
Retail Loans | Impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	25,835.2		20,928.3
Retail Loans | Consumer Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	486,251.7	7,803.8	407,811.6
Retail Loans | Consumer Portfolio Segment | Performing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	483,533.0		405,966.4
Retail Loans | Consumer Portfolio Segment | Impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	2,718.7		1,845.2
Retail Loans | Personal loans/Credit card
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	449,381.7	7,212.0	347,393.8
Retail Loans | Personal loans/Credit card | Performing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	446,733.3		345,409.4
Retail Loans | Personal loans/Credit card | Impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	2,648.4		1,984.4
Retail Loans | Retail Business Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	660,456.7	10,599.5	519,472.2
Retail Loans | Retail Business Banking | Performing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	650,444.2		512,367.6
Retail Loans | Retail Business Banking | Impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	10,012.5		7,104.6
Retail Loans | Commercial vehicle and construction equipment finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	305,995.4	4,910.9	280,372.2
Retail Loans | Commercial vehicle and construction equipment finance | Performing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	300,436.0		274,164.4
Retail Loans | Commercial vehicle and construction equipment finance | Impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	5,559.4		6,207.8
Retail Loans | Housing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	241,368.8	3,873.7	193,180.5
Retail Loans | Housing loans | Performing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	241,126.1		192,974.7
Retail Loans | Housing loans | Impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	242.7		205.8
Retail Loans | Other Loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	577,534.2	9,268.6	440,107.4
Retail Loans | Other Loan | Performing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	572,880.7		436,526.9
Retail Loans | Other Loan | Impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	4,653.5		3,580.5
Wholesale loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	1,222,460.6	19,619.0	1,039,923.6
Wholesale loans | Impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	13,489.6	216.5	8,758.2
Wholesale loans | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	1,205,084.8	19,340.2	1,029,884.6
Wholesale loans | Labeled
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	₨ 3,886.2	$ 62.3	₨ 1,280.8

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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 310



-SubTopic 10



-Section 45



-Paragraph 2



-URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522



Reference 2: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 310



-SubTopic 10



-Section 50



-Paragraph 4



-URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5074-111524

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