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Pension and Other Employee Obligations - Actuarial Assumptions For Gratuity Plans (Detail) | Mar. 31, 2019 | Mar. 31, 2018 | Mar. 31, 2017
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Disclosure of defined benefit plans [line items] |  |  |
Expected rate of return on plan assets | 7.00% | 7.30% | 7.05%
Bottom of range [member] |  |  |
Disclosure of defined benefit plans [line items] |  |  |
Rate of increase in compensation level | 7.00% | 7.00% | 7.00%
Top of range [member] |  |  |
Disclosure of defined benefit plans [line items] |  |  |
Rate of increase in compensation level | 8.00% | 10.00% | 15.00%
India [member] |  |  |
Disclosure of defined benefit plans [line items] |  |  |
Discount rate |  |  | 7.05%
India [member] | Bottom of range [member] |  |  |
Disclosure of defined benefit plans [line items] |  |  |
Discount rate | 6.60% | 6.60% |
India [member] | Top of range [member] |  |  |
Disclosure of defined benefit plans [line items] |  |  |
Discount rate | 7.00% | 7.30% |
Philippines [member] |  |  |
Disclosure of defined benefit plans [line items] |  |  |
Discount rate | 6.10% | 3.10% | 5.45%
Sri Lanka [member] |  |  |
Disclosure of defined benefit plans [line items] |  |  |
Discount rate | 11.00% | 10.00% | 12.80%

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- Definition The discount rate used as the significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit obligation, at present value; Actuarial assumptions [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2018-01-01 -Paragraph 144 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=19&date=2018-03-01&anchor=para_144&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The expected rate of salary increases used as a significant actuarial assumption to determine the present value of a defined benefit obligation. [Refer: Defined benefit plans [member]; Defined benefit obligation, at present value; Actuarial assumptions [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2018-01-01 -Paragraph 144 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=19&date=2018-03-01&anchor=para_144&doctype=Standard -URIDate 2018-03-16 + Details
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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 expected rate of return on plan assets used as a significant actuarial assumption to determine the present value of net defined benefit obligation. + References No definition available. + Details
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- Details
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