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Goodwill - Carrying Value of Goodwill Allocated to Cash Generating Units (Detail) - USD ($) $ in Thousands	Mar. 31, 2018	Mar. 31, 2017
Disclosure of information for cash-generating units [line items]
Goodwill	$ 135,186	$ 134,008
WNS global BPM [member]
Disclosure of information for cash-generating units [line items]
Goodwill	3,815	3,815
South Africa [member]
Disclosure of information for cash-generating units [line items]
Goodwill	5,581	4,963
Research & analytics [member]
Disclosure of information for cash-generating units [line items]
Goodwill	48,901	49,146
Technology services [member]
Disclosure of information for cash-generating units [line items]
Goodwill	3,632	3,238
WNS Auto Claims BPM [member]
Disclosure of information for cash-generating units [line items]
Goodwill	4,633	4,130
Finance and accounting [member]
Disclosure of information for cash-generating units [line items]
Goodwill	29,542	29,874
Healthcare [member]
Disclosure of information for cash-generating units [line items]
Goodwill	$ 39,082	$ 38,842

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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.

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The amount of assets representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognised. [Refer: Business combinations [member]]

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