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OTHER NON-CURRENT LIABILITIES (Statutory severance and pre-notice obligations Narrative) (Details) - USD ($)
$ in Millions
Dec. 30, 2018
Dec. 31, 2017
Disclosure of defined benefit plans [line items]    
Cumulative amount of actuarial losses recognized in other comprehensive income $ 23.8 $ 22.1
Actuarial assumption of discount rate    
Disclosure of defined benefit plans [line items]    
Percentage of reasonably possible increase in actuarial assumption 1.00%  
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption $ (4.1)  
Percentage of reasonably possible decrease in actuarial assumption 1.00%  
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption $ 5.0  
Actuarial assumption of expected rates of compensation increases    
Disclosure of defined benefit plans [line items]    
Percentage of reasonably possible increase in actuarial assumption 1.00%  
Increase (decrease) in defined benefit obligation due to reasonably possible increase in actuarial assumption $ 5.0  
Percentage of reasonably possible decrease in actuarial assumption 1.00%  
Increase (decrease) in defined benefit obligation due to reasonably possible decrease in actuarial assumption $ (4.3)  
Minimum    
Disclosure of defined benefit plans [line items]    
Actuarial assumption of discount rates 10.00% 9.20%
Actuarial assumption of expected rates of salary increases 6.50% 8.00%
Maximum    
Disclosure of defined benefit plans [line items]    
Actuarial assumption of discount rates 10.50% 9.65%
Actuarial assumption of expected rates of salary increases 10.00% 10.00%