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Income Taxes - Summary of Reconciliation of Income Tax Expense (Parenthetical) (Detail) - INR (₨) |  | 12 Months Ended
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Dec. 31, 2017 | Mar. 31, 2018
Reconciliation of accounting profit multiplied by applicable tax rates [abstract] |  |
US federal tax rate | 35.00% | 21.00%
Re-statement of deferred tax |  | ₨ 1,563

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- Definition The tax rate effect on the reconciliation between the average effective tax rate and the applicable tax rate resulting from the application of foreign tax rates. [Refer: Average effective tax rate; Applicable tax rate] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2017-01-01 -Paragraph 81 -Subparagraph c -Clause ii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2017-03-01&anchor=para_81_c_ii&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition Restatement Of Deferred Tax Items Pursuant To US Tax Reforms + References No definition available. + Details
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