Related Party Transactions - Schedule of Compensation to Key Management Personnel (Details) - USD ($) $ in Millions	12 Months Ended
Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Disclosure Of Key Management Personnel Stock Compensation Expense [Abstract]
Salaries and other employee benefits to whole-time directors and executive officers	$ 8	$ 12	$ 15
Commission and other benefits to non-executive / independent directors	2	2	2
Total compensation	$ 10	$ 14	$ 17

The amount of compensation to key management personnel. [Refer: Key management personnel of entity or parent [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 24
-IssueDate 2017-01-01
-Paragraph 17
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=24&date=2017-03-01&anchor=para_17&doctype=Standard
-URIDate 2017-03-09

+ Details

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- Definition

Commission and other benefits to non-executive independent directors.

+ References

No definition available.

+ Details

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Namespace Prefix:	infy_
Data Type:	xbrli:monetaryItemType
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- Definition

Disclosure of key management personnel stock compensation expense.

+ References

No definition available.

+ Details

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- Definition

Salaries and other employee benefits to whole time directors and executive officers.

+ References

No definition available.

+ Details

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Namespace Prefix:	infy_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration