XML 158 R143.htm IDEA: XBRL DOCUMENT v3.8.0.1

Commitment and Contingencies - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Commitments and contingencies [line items]
Rental expense	$ 33,685	$ 27,712	$ 24,313
Commitments net	5,762	6,257
Bank guarantees	2,579	1,190
Restricted time deposits	$ 575	$ 355
Bottom of range [member]
Commitments and contingencies [line items]
Bank guarantees, remaining expiry term	1 year
Top of range [member]
Commitments and contingencies [line items]
Bank guarantees, remaining expiry term	5 years

X

- Definition

The amount of financial assets that the entity has pledged as collateral for liabilities or contingent liabilities, including amounts that have been reclassified in accordance with paragraph 3.2.23(a) of IFRS 9. [Refer: Contingent liabilities [member]; Financial assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2017-01-01
-Paragraph 14
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-01&anchor=para_14_a&doctype=Standard
-URIDate 2017-03-09

+ Details

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Balance Type:	debit
Period Type:	instant

X

- Definition

The amount of expense recognised on rental activities.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 85
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_85&doctype=Standard
-URIDate 2017-03-09

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Bank guarantees remaining expiry term.

+ References

No definition available.

+ Details

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Namespace Prefix:	wns_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Bank guarantees held by entities within the consolidated group

+ References

No definition available.

+ Details

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Namespace Prefix:	wns_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Commitments and contingencies.

+ References

No definition available.

+ Details

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Namespace Prefix:	wns_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of future capital expenditures that the entity is committed to make, net of advances paid to vendors.

+ References

No definition available.

+ Details

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Namespace Prefix:	wns_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

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Period Type:

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- Details

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