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SUPPLEMENTAL CASH FLOW DISCLOSURE (Adjustments to reconcile net earnings to cash flows from operating activities) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 29, 2019 | Dec. 30, 2018
Cash flow statement [Abstract] |  |
Depreciation and amortization (note 20) | $ 156,794 | $ 158,076
Restructuring charges related to property, plant and equipment, right-of-use assets, and software (note 17) | 13,061 | 12,394
Loss on disposal of property, plant and equipment and software | 1,399 | 1,124
Share-based compensation | 16,272 | 19,513
Deferred income taxes (note 18) | (23,623) | 8,872
Unrealized net (gain) loss on foreign exchange and financial derivatives | (330) | 882
Timing differences between settlement of financial derivatives and transfer of deferred gains and losses in accumulated OCI to inventory and net earnings | 907 | 0
Other non-current assets | 5,971 | (1,445)
Other non-current liabilities | 5,097 | 2,839
Adjustments to reconcile net earnings to cash flows from operating activities (note 21(a)) | $ 175,548 | $ 202,255

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