v3.26.1
Pensions and Other Benefit Programs (Components of Net Periodic Benefit (Income) Cost) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Nonpension Postretirement Benefit Plans          
Defined Benefit Plan Disclosure [Line Items]          
Service cost $ 59 $ 70 $ 118 $ 140  
Interest cost 942 1,040 1,886 2,078  
Expected return on plan assets 0 0 0 0  
Amortization of prior service (credit) cost 0 0 0 0  
Amortization of net actuarial loss (gain) (361) (618) (724) (1,222)  
Settlement     0 0 $ 0
Net periodic benefit cost (income) 640 492 1,280 996  
Contributions to benefit plans 2,794 3,236 5,891 6,938  
United States | Defined Benefit Pension Plans          
Defined Benefit Plan Disclosure [Line Items]          
Service cost 0 7 0 13  
Interest cost 12,553 13,523 25,107 27,045  
Expected return on plan assets (11,192) (18,650) (22,383) (37,300)  
Amortization of prior service (credit) cost (5) (5) (10) (10)  
Amortization of net actuarial loss (gain) 6,551 5,072 13,102 10,143  
Settlement     364 0 0
Net periodic benefit cost (income) 8,271 (53) 16,180 (109)  
Contributions to benefit plans 1,088 1,416 2,477 3,029  
Foreign | Defined Benefit Pension Plans          
Defined Benefit Plan Disclosure [Line Items]          
Service cost 243 291 490 569  
Interest cost 5,926 5,929 11,886 11,537  
Expected return on plan assets (6,204) (6,731) (12,449) (13,113)  
Amortization of prior service (credit) cost 78 78 157 151  
Amortization of net actuarial loss (gain) 2,733 2,309 5,483 4,492  
Settlement     871 0 $ 0
Net periodic benefit cost (income) 3,647 1,876 6,438 3,636  
Contributions to benefit plans $ 342 $ 806 $ 6,399 $ 8,162