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Subsequent Events - Additional Information (Detail) - 1 months ended Jul. 21, 2015 - Subsequent Event - INR (₨) ₨ / shares in Units, ₨ in Millions	Total
Dividend paid
Subsequent Event [Line Items]
Dividend paid, per share amount	₨ 8.00
Dividend paid, total amount	₨ 24,016.9
Dividend paid including tax, subsequent to date	Jul. 21, 2015
Dividend Declared
Subsequent Event [Line Items]
Dividend declared, date approved	Jul. 21, 2015
Dividend declared, board of directors meeting date	Apr. 23, 2015

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- Definition

Board of Directors, Meeting Date, Day Month And Year

+ References

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- Definition

Aggregate dividends paid during the period for each share of common stock outstanding.

+ References

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-Publisher FASB



-Name Accounting Standards Codification



-Topic 505



-SubTopic 10



-Section S99



-Paragraph 1



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- Definition

Date the declared dividend will be paid, in CCYY-MM-DD format.

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-Name Accounting Standards Codification



-Topic 230



-SubTopic 10



-Section 50



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+ References

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-Topic 230



-SubTopic 10



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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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