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SHARE-BASED COMPENSATION (Outstanding stock options) (Details) | 12 Months Ended |  |
--- | --- | --- | ---
Jan. 02, 2022 shares $ / shares | Jan. 02, 2022 shares $ / shares $ / shares | Jan. 03, 2021 shares $ / shares | Jan. 03, 2021 shares $ / shares $ / shares | Jan. 03, 2021 $ / shares | Dec. 29, 2019 $ / shares | Dec. 29, 2019 $ / shares
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |
Forfeited (in shares) | (68,000) | (68,000) |  |  |  |  |
Weighted average exercise price of share options forfeited in share-based payment arrangement | $ / shares |  | $ 29.01 |  |  |  |  |
Granted (in shares) |  |  | 1,387,000 | 1,387,000 |  |  |
Weighted average exercise price of share options granted in share-based payment arrangement | $ / shares |  |  |  | $ 26.43 |  |  |
CAD |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |
Number, outstanding, beginning of fiscal period (in shares) | 1,463,000 | 1,463,000 | 1,550,000 | 1,550,000 |  |  |
Weighted average exercise price of share options outstanding in share-based payment arrangement | $ / shares | $ 36.85 | $ 36.85 | $ 36.33 | $ 36.33 |  | $ 35.65 |
Exercised (in shares) | (227,000) | (227,000) | (87,000) | (87,000) |  |  |
Weighted average exercise price of share options exercised in share-based payment arrangement | $ / shares | $ 33.48 |  | $ 24.22 |  |  |  |
Number, outstanding, end of fiscal period (in shares) | 1,236,000 | 1,236,000 | 1,463,000 | 1,463,000 |  |  |
USD |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |
Number, outstanding, beginning of fiscal period (in shares) | 2,056,000 | 2,056,000 | 669,000 | 669,000 |  |  |
Weighted average exercise price of share options outstanding in share-based payment arrangement | (per share) | $ 27.21 | $ 27.21 |  |  | $ 27.27 |  | $ 29.01
Number, outstanding, end of fiscal period (in shares) | 1,988,000 | 1,988,000 | 2,056,000 | 2,056,000 |  |  |

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