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Grading Indicators Related to Bank's Retail Loans and Wholesale Loans (Detail) ₨ in Millions, $ in Millions	Mar. 31, 2019 INR (₨)	Mar. 31, 2019 USD ($)	Mar. 31, 2018 INR (₨)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	₨ 9,111,464.6	$ 131,744.7	₨ 7,376,179.0
Wholesale loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	2,873,561.0	41,549.6	2,162,814.4
Wholesale loans | Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	2,834,466.7	40,984.2	2,116,499.3
Wholesale loans | Labeled
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	940.6	13.7	13,502.3
Wholesale loans | Impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	38,153.7	551.7	32,812.8
Retail Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	6,237,903.6	90,195.1	5,213,364.6
Retail Loans | Impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	102,268.8		75,904.5
Retail Loans | Auto loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	951,744.2	13,761.5	885,234.7
Retail Loans | Auto loans | Impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	13,606.7		8,634.5
Retail Loans | Personal loans/Credit card
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	1,538,107.4	22,239.8	1,187,127.1
Retail Loans | Personal loans/Credit card | Impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	15,781.5		10,150.9
Retail Loans | Retail Business Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	1,478,317.8	21,375.3	1,305,219.8
Retail Loans | Retail Business Banking | Impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	29,945.0		25,547.2
Retail Loans | Commercial vehicle and construction equipment finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	746,288.0	10,790.7	595,813.6
Retail Loans | Commercial vehicle and construction equipment finance | Impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	11,254.9		6,968.1
Retail Loans | Housing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	513,771.6	7,428.7	362,718.1
Retail Loans | Housing loans | Impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	2,157.1		1,899.5
Retail Loans | Other Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	1,009,674.6	14,599.1	877,251.3
Retail Loans | Other Retail | Impaired
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	29,523.6		22,704.3
Performing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	8,971,042.1	$ 129,714.3	7,267,461.7
Performing | Retail Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	6,135,634.8		5,137,460.1
Performing | Retail Loans | Auto loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	938,137.5		876,600.2
Performing | Retail Loans | Personal loans/Credit card
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	1,522,325.9		1,176,976.2
Performing | Retail Loans | Retail Business Banking
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	1,448,372.8		1,279,672.6
Performing | Retail Loans | Commercial vehicle and construction equipment finance
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	735,033.1		588,845.5
Performing | Retail Loans | Housing loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	511,614.5		360,818.6
Performing | Retail Loans | Other Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivables	₨ 980,151.0		₨ 854,547.0

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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.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
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