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FINANCIAL INSTRUMENTS (Carrying amounts and fair values) (Details) - USD ($)
$ in Thousands
Jan. 03, 2021
Dec. 29, 2019
Dec. 30, 2018
Disclosure Of Financial Assets And Liabilities [Line Items]      
Cash and cash equivalents (note 5) $ 505,264 $ 64,126 $ 46,657
Trade accounts receivable (note 6) 196,480 320,931  
Financing arrangements 27,600 39,600  
Financial liabilities, fair value 221,300 206,400  
Financial liabilities at amortised cost | Accounts payable and accrued liabilities (1)      
Disclosure Of Financial Assets And Liabilities [Line Items]      
Financial liabilities, carrying value 326,069 395,564  
Financial liabilities, fair value 326,069 395,564  
Financial liabilities at amortised cost | Long term borrowings with variable rates      
Disclosure Of Financial Assets And Liabilities [Line Items]      
Financial liabilities, carrying value 800,000 645,000  
Financial liabilities, fair value 800,000 645,000  
Financial liabilities at amortised cost | Long term borrowings with fixed rates      
Disclosure Of Financial Assets And Liabilities [Line Items]      
Financial liabilities, carrying value 200,000 200,000  
Financial liabilities, fair value 200,000 200,000  
Derivative financial liabilities included in accounts payable and accrued liabilities      
Disclosure Of Financial Assets And Liabilities [Line Items]      
Financial liabilities, carrying value 17,653 11,067  
Financial liabilities, fair value 17,653 11,067  
Financial assets at amortised cost | Cash and cash equivalents      
Disclosure Of Financial Assets And Liabilities [Line Items]      
Cash and cash equivalents (note 5) 505,264 64,126  
Financial assets, fair value 505,264 64,126  
Financial assets at amortised cost | Trade accounts receivable      
Disclosure Of Financial Assets And Liabilities [Line Items]      
Trade accounts receivable (note 6) 196,480 320,931  
Financial assets, fair value 196,480 320,931  
Financial assets at amortised cost | Financial assets included in prepaid expenses, deposits and other current assets      
Disclosure Of Financial Assets And Liabilities [Line Items]      
Financial assets 88,781 45,950  
Financial assets, fair value 88,781 45,950  
Financial assets at amortised cost | Long-term non-trade receivables included in other non-current assets      
Disclosure Of Financial Assets And Liabilities [Line Items]      
Financial assets 1,435 2,933  
Financial assets, fair value 1,435 2,933  
Derivative financial assets included in prepaid expenses, deposits and other current assets      
Disclosure Of Financial Assets And Liabilities [Line Items]      
Financial assets 4,947 9,816  
Financial assets, fair value $ 4,947 $ 9,816