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Pension and Postretirement Benefits (Accumulated and Projected Obligations) (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Retirement Benefits [Abstract]    
Benefit Obligation $ 529,531 $ 230,688
Accumulated benefit obligation 519,287 215,535
Fair value of plan assets $ 401,285 $ 59,232