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INTANGIBLE ASSETS AND GOODWILL (Narrative) (Details) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Apr. 04, 2021 USD ($) | Mar. 29, 2020 USD ($) | Jan. 02, 2022 USD ($) | Jan. 03, 2021 USD ($) | Dec. 29, 2019 USD ($)
Disclosure of detailed information about intangible assets [line items] |  |  |  |  |
Intangible assets |  |  | $ 306,630,000 | $ 289,901,000 | $ 289,901,000
(Impairment reversal, net of write-downs) |  | $ 94,000,000 | $ (31,459,000) | 93,989,000 |
Reversal of intangible asset impairment | $ 55,600,000 |  |  |  |
Key assumption used in estimation of unit's recoverable amount, EBITDA multiple |  |  | 10 |  |
Write-downs and impairments |  |  | $ 31,500,000 |  |
Hosiery and underwear |  |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |  |
Recoverable amount of asset or cash-generating unit |  |  | 544,000,000.0 | 273,500,000 |
Cash-generating units | Textile And Sewing |  |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |  |
(Impairment reversal, net of write-downs) |  |  | 0 |  |
Cash-generating units | Hosiery and underwear |  |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |  |
(Impairment reversal, net of write-downs) |  |  | 24,100,000 |  |
Trademarks |  |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |  |
Reversal of impairment loss recognised in profit or loss, intangible assets other than goodwill |  |  | 37,900,000 |  |
Trademarks | Cash-generating units | Hosiery and underwear |  |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |  |
(Impairment reversal, net of write-downs) |  |  | 10,400,000 |  |
Customer contracts and customer relationships |  |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |  |
Reversal of impairment loss recognised in profit or loss, intangible assets other than goodwill |  |  | 17,700,000 |  |
Customer contracts and customer relationships | Cash-generating units | Hosiery and underwear |  |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |  |
(Impairment reversal, net of write-downs) |  |  | 13,700,000 |  |
Computer software |  |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |  |
Intangible assets |  |  | 17,361,000 |  | $ 19,273,000
Computer software | Internally-generated |  |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |  |
Intangible assets |  |  | 14,100,000 | 16,100,000 |
Computer software, assets not yet utilized in operations |  |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |  |
Intangible assets |  |  | $ 3,600,000 | $ 1,900,000 |

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