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Employee Benefit Plans (Actuarial Assumptions Used, Projected Benefit Obligation) (Details)
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Defined Benefit Pension Plans And Defined Benefit Postretirement Plans Disclosure [Abstract]      
Weighted average discount rate 3.09% 4.13% 3.49%
Rate of compensation increase 3.00% 3.00% 3.00%