v3.26.1
FAIR VALUE MEASUREMENTS (Details) - EBP 401 - USD ($)
Dec. 31, 2025
Dec. 31, 2024
EBP, Investment, Fair Value and NAV [Line Items]    
Total investment assets at fair value $ 581,435,974 $ 650,028,697
Gildan common stock    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investment assets at fair value 9,342,330 14,149,314
Registered investment companies    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investment assets at fair value 26,758,057 34,063,048
Money market fund    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investment assets at fair value 246,183 361,188
Investment in collective trusts    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investment assets at fair value 545,089,404 601,455,147
Total    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investment assets at fair value 581,435,974 650,028,697
Total | Gildan common stock    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investment assets at fair value 9,342,330 14,149,314
Total | Registered investment companies    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investment assets at fair value 26,758,057 34,063,048
Total | Money market fund    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investment assets at fair value 246,183 361,188
Total | Investment in collective trusts    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investment assets at fair value 545,089,404 601,455,147
Level 1    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investment assets at fair value 36,346,570 48,573,550
Level 1 | Gildan common stock    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investment assets at fair value 9,342,330 14,149,314
Level 1 | Registered investment companies    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investment assets at fair value 26,758,057 34,063,048
Level 1 | Money market fund    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investment assets at fair value 246,183 361,188
Level 1 | Investment in collective trusts    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investment assets at fair value 0 0
Level 2    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investment assets at fair value 0 0
Level 2 | Gildan common stock    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investment assets at fair value 0 0
Level 2 | Registered investment companies    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investment assets at fair value 0 0
Level 2 | Money market fund    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investment assets at fair value 0 0
Level 2 | Investment in collective trusts    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investment assets at fair value 0 0
Level 3    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investment assets at fair value 0 0
Level 3 | Gildan common stock    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investment assets at fair value 0 0
Level 3 | Registered investment companies    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investment assets at fair value 0 0
Level 3 | Money market fund    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investment assets at fair value 0 0
Level 3 | Investment in collective trusts    
EBP, Investment, Fair Value and NAV [Line Items]    
Total investment assets at fair value $ 0 $ 0