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Impaired Loans (Detail) ₨ in Millions, $ in Millions | Mar. 31, 2016 INR (₨) | Mar. 31, 2016 USD ($) | Mar. 31, 2015 INR (₨)
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Impaired loans |  | ₨ 52,982.7 | $ 799.7 | ₨ 39,324.8
Iron and Steel |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Impaired loans |  | 4,712.7 | 71.1 | 4,793.8
Others (none greater than 5% of impaired loans) |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Impaired loans |  | 25,831.5 | 389.9 | 23,161.2
Activities allied to agriculture |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Impaired loans |  | 7,397.1 | 111.7 | 5,369.3
Wholesale |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Impaired loans |  | 4,671.8 | 70.5 | 3,608.2
Consumer Loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Impaired loans | [1] | 3,818.7 | 57.6 | ₨ 2,392.3
Real estate and Property services |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Impaired loans |  | 3,559.2 | 53.7 |
Construction and Developers (Infrastructure) |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Impaired loans |  | ₨ 2,991.7 | $ 45.2 |
[1] | primarily includes retails loans such as personal loans and auto loans

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- Definition Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953550-111524 + Details
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