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Pension And Other Benefit Plans - (Weighted Average Assumptions Used To Determine Net Periodic Pension Cost) (Details)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Retirement Benefits [Abstract]    
Discount rate 1.80% 1.30%
Expected long-term return on plan assets 3.50% 3.60%
Rate of compensation increase 1.30% 1.30%