XML 150 R134.htm IDEA: XBRL DOCUMENT v3.19.1

Revenue - Summary of Estimated Revenue Expected to be Recognized in Future Related to Remaining Performance Obligations (Detail) $ in Thousands	Mar. 31, 2019 USD ($)
Disclosure of performance obligations [line items]
Transaction price allocated to remaining performance obligations	$ 27,723
Less than 1 Year [member]
Disclosure of performance obligations [line items]
Transaction price allocated to remaining performance obligations	15,635
1-2 years [member]
Disclosure of performance obligations [line items]
Transaction price allocated to remaining performance obligations	10,182
2-5 years [member]
Disclosure of performance obligations [line items]
Transaction price allocated to remaining performance obligations	1,906
More than 5 years [member]
Disclosure of performance obligations [line items]
Transaction price allocated to remaining performance obligations

X

- 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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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of the transaction price allocated to the performance obligations that are unsatisfied (or partially unsatisfied) as of the end of the reporting period. The transaction price is the amount of consideration to which an entity expects to be entitled in exchange for transferring promised goods or services to a customer, excluding amounts collected on behalf of third parties (for example, some sales taxes). [Refer: Performance obligations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2018-01-01
-Paragraph 120
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=15&date=2018-03-01&anchor=para_120_a&doctype=Standard
-URIDate 2018-03-16

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_MaturityAxis=wns_TwoToFiveYearsMember
Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: