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SIGNIFICANT ACCOUNTING POLICIES (Property, plant and equipment useful lives) (Details)
 12 Months Ended
Jan. 03, 2021
Buildings and improvements | Bottom of range [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Useful life 5 years
Buildings and improvements | Top of range [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Useful life 40 years
Manufacturing equipment | Bottom of range [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Useful life 2 years
Manufacturing equipment | Top of range [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Useful life 20 years
Other equipment | Bottom of range [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Useful life 3 years
Other equipment | Top of range [member]  
Disclosure of detailed information about property, plant and equipment [line items]  
Useful life 10 years