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Financial Instruments - Percentage of Revenue Generated from Top Customer and Top Five Customers (Detail) | 12 Months Ended
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Mar. 31, 2018 | Mar. 31, 2017 | Mar. 31, 2016
Top customer [member] |  |  |
Disclosure of major customers [line items] |  |  |
Percentage of revenue generated from customers | 6.90% | 6.80% | 9.00%
Top five customers [Member] |  |  |
Disclosure of major customers [line items] |  |  |
Percentage of revenue generated from customers | 27.10% | 29.40% | 32.10%

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The percentage of the entity's revenue. [Refer: Revenue] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 8 -IssueDate 2018-01-01 -Paragraph 34 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=8&date=2018-03-01&anchor=para_34&doctype=Standard -URIDate 2018-03-16 + Details
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- Details
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- Details
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Balance Type: |
Period Type: |