XML 144 R121.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2

ENTITY-WIDE DISCLOSURES (Major customers as a percentage of net sales) (Details)	12 Months Ended
	Dec. 29, 2019	Dec. 30, 2018
Customer A
Disclosure of major customers [line items]
Percentage of total net sales	18.60%	19.00%
Customer B
Disclosure of major customers [line items]
Percentage of total net sales	13.80%	10.00%

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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X

- Definition

The percentage of the entity's revenue. [Refer: Revenue]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 8
-IssueDate 2019-01-01
-Paragraph 34
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2019-en-r&anchor=para_34&doctype=Standard
-URIDate 2019-03-27

+ Details

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X

- Details

Name:	ifrs-full_MajorCustomersAxis=gil_CustomerAMember
Namespace Prefix:
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Period Type:

X

- Details

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Namespace Prefix:
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