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Loan Delinquency and Non-Accrual Loans (Parenthetical) (Detail) ₨ in Millions, $ in Millions | 12 Months Ended |
--- | --- | ---
Mar. 31, 2018 INR (₨) | Mar. 31, 2017 INR (₨) | Mar. 31, 2018 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Gross loans | ₨ 7,376,179.0 | ₨ 5,988,909.7 | $ 113,288.0
Maximum |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Number of days past due up to which loans considered current | 30 days | 30 days |
Number of past days less than to which Crop Related Agricultural loans are not considered as impaired | 366 days | 366 days |
Agricultural Loan | Not Impaired or Less Than 366 Days Past Due |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Gross loans | ₨ 31,500.0 | ₨ 38,300.0 |

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- Definition 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5074-111524 + Details
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