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Summary of Significant Accounting Policies - Additional Information (Detail) | 12 Months Ended
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Mar. 31, 2016 Segment
Significant Accounting Policies [Line Items] |
Fair values of amortized cost | 95.00%
Reportable segments | 3
Financial statements translation rate, Indian rupees (Rs.) equivalence of U.S. $1 | 66.25
Retail Loans | Personal loans/Credit card |
Significant Accounting Policies [Line Items] |
Loans charge off period | 150 days
Retail Loans | Auto Loans, Commercial Vehicle and Construction Equipment Finance |
Significant Accounting Policies [Line Items] |
Loans charge off period | 180 days
Retail Loans | Housing loans |
Significant Accounting Policies [Line Items] |
Loans charge off period | 720 days
Retail Loans | Retail Business Banking |
Significant Accounting Policies [Line Items] |
Loans charge off period | Customer to customer basis
Minimum |
Significant Accounting Policies [Line Items] |
Bank voting rights | 20.00%
Minimum | Retail Loans |
Significant Accounting Policies [Line Items] |
Loans charge off period | 150 days
Maximum |
Significant Accounting Policies [Line Items] |
Bank voting rights | 50.00%
Maximum | Retail Loans |
Significant Accounting Policies [Line Items] |
Loans charge off period | 1083 days

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- Definition Review of impairment of individual investments that have fair value less than 95% of the amortized cost + References No definition available. + Details
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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571 + Details
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- Definition Foreign exchange rate used to translate amounts denominated in functional currency to reporting currency. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6897108&loc=SL6897125-166521 + Details
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- Definition Threshold period past due for financing receivable to write off as uncollectible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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