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Pension Plans and Other Postretirement Benefits (Net Periodic Benefit Cost (Income) For Pension And Postretirement Benefit Plans) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Pension Plan [Member] | Domestic Plan [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Service cost $ 3,062 $ 2,659 $ 6,078 $ 5,317
Interest cost 5,927 4,536 11,649 9,072
Expected return on plan assets (13,724) (11,510) (27,265) (23,019)
Amortization of prior service cost (credit) 46 6 93 12
Amortization of actuarial net (gain) loss (458) (412) (915) (823)
Net periodic benefit cost (income) (5,147) (4,721) (10,360) (9,441)
Pension Plan [Member] | Foreign Plan [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 1,075 1,074 2,162 2,128
Interest cost 1,608 1,577 3,226 3,121
Expected return on plan assets (3,316) (2,899) (6,649) (5,740)
Amortization of prior service cost (credit) 35 34 70 68
Amortization of actuarial net (gain) loss (6) (6) (13) (12)
Net periodic benefit cost (income) (604) (220) (1,204) (435)
Other Postretirement Benefits Plan [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 134 130 269 260
Interest cost 418 391 836 782
Expected return on plan assets (193) (201) (385) (403)
Amortization of prior service cost (credit) (757) (757) (1,514) (1,514)
Amortization of actuarial net (gain) loss (15) (75) (31) (151)
Net periodic benefit cost (income) $ (413) $ (512) $ (825) $ (1,026)