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SHAREHOLDERS' EQUITY (Schedule Of Assumptions Used In Monte Carlo Simulation For Performance Share Units) (Details) - Performance Share Units (PSUs)
3 Months Ended
Mar. 28, 2020
Mar. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Risk-free interest rate 1.40% 2.30%
Expected life (years) 3 years 3 years
Expected volatility 24.00% 25.00%
Expected dividend yield 1.40% 1.50%