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Discontinued Operations - Additional Information (Detail)
$ in Millions
May 25, 2016
USD ($)
Alstyle Apparel, LLC [Member] | Gildan Activewear Inc. [Member] | Gildan Purchase Agreement [Member]  
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]  
Purchase price, cash to be received $ 110.0