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Impaired Loans (Detail) ₨ in Millions, $ in Millions | Mar. 31, 2020 INR (₨) | Mar. 31, 2020 USD ($) | Mar. 31, 2019 INR (₨)
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Impaired loans | ₨ 157,426.9 | $ 2,088.1 | ₨ 140,422.5
Wholesale Trade- Non Industrial |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Impaired loans |  |  | 15,856.7
Agriculture Production - Food |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Impaired loans | 22,546.3 | 299.1 | 18,915.0
Consumer Loans |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Impaired loans | 21,718.9 | 288.1 | 22,513.7
Others (none greater than 5% of impaired loans) |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Impaired loans | 83,133.5 | 1,102.7 | 66,792.8
Retail Trade |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Impaired loans | 8,823.1 | 117.0 | 7,767.0
Food And Beverage |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Impaired loans | 8,137.5 | 107.9 | ₨ 8,577.3
Road Transportion |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Impaired loans | ₨ 13,067.6 | $ 173.3 |

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953550-111524 + Details
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