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FINANCIAL INSTRUMENTS (Hedging components of other comprehensive income) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 29, 2019 | Dec. 30, 2018
Disclosure of detailed information about hedges [line items] |  |
Net gain (loss) on derivatives designated as cash flow hedges | $ (46) | $ (67)
Cash flow hedges (note 14(d)) | (3,917) | (10,158)
Foreign currency risk |  |
Disclosure of detailed information about hedges [line items] |  |
Gains (losses) on cash flow hedges, before tax | 4,566 | 6,740
Cash flow hedges (note 14(d)) | 60 | 16
Foreign currency risk | Net sales |  |
Disclosure of detailed information about hedges [line items] |  |
Reclassification adjustments on cash flow hedges, before tax | (5,667) | (1,864)
Foreign currency risk | Cost of sales |  |
Disclosure of detailed information about hedges [line items] |  |
Reclassification adjustments on cash flow hedges, before tax | (350) | (307)
Foreign currency risk | Selling, general and administrative expenses |  |
Disclosure of detailed information about hedges [line items] |  |
Reclassification adjustments on cash flow hedges, before tax | 417 | 51
Foreign currency risk | Financial expenses, net |  |
Disclosure of detailed information about hedges [line items] |  |
Reclassification adjustments on cash flow hedges, before tax | (752) | (2,224)
Commodity risk |  |
Disclosure of detailed information about hedges [line items] |  |
Gains (losses) on cash flow hedges, before tax | (8,213) | 698
Commodity risk | Inventories |  |
Disclosure of detailed information about hedges [line items] |  |
Income Tax Relating To Reclassification Adjustments On Cash Flow Hedges, Before Tax | 16,656 | (13,303)
Interest rate risk |  |
Disclosure of detailed information about hedges [line items] |  |
Gains (losses) on cash flow hedges, before tax | $ (10,588) | $ 102

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