XML 90 R73.htm IDEA: XBRL DOCUMENT v3.25.4
Pensions and other postretirement benefit plans - Schedule of Pension Costs (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]      
Total benefit, net $ (19,700) $ (11,400) $ (8,000)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax [Abstract]      
Net actuarial (gain) loss 2,575 (10,205) (33,135)
Amortization of net actuarial (loss) gain (779) (1,014) 305
Change in prior service cost 0 0 (3,307)
Amortization of prior service costs 498 500 502
(Gain) loss recognized in Other comprehensive income (loss) 24,621 (12,275) (28,830)
Pension benefits      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]      
Service cost 860 998 1,366
Interest cost 80,834 81,500 84,449
Expected return on plan assets (91,689) (96,726) (95,358)
Amortization of actuarial loss (gain) 2,453 2,926 2,185
Amortization of prior service costs 71 69 67
Settlement loss (gain) (12,105) 35 0
Curtailment 0 119 0
Total benefit, net (19,576) (11,079) (7,291)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax [Abstract]      
Net actuarial (gain) loss 3,368 (9,919) (33,244)
Amortization of net actuarial (loss) gain (2,453) (2,926) (2,185)
Change in prior service cost 0 0 0
Amortization of prior service costs (71) (69) (67)
Settlement gain (loss) 12,105 (35) 0
Equity method investments 725 (116) (610)
Other 9,497 (1,405) 7,415
(Gain) loss recognized in Other comprehensive income (loss) 23,171 (14,470) (28,691)
Postretirement benefits      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]      
Service cost 32 35 40
Interest cost 2,104 2,120 2,334
Expected return on plan assets 0 0 0
Amortization of actuarial loss (gain) (1,674) (1,912) (2,490)
Amortization of prior service costs (569) (569) (569)
Settlement loss (gain) 0 0 0
Curtailment 0 0 0
Total benefit, net (107) (326) (685)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax [Abstract]      
Net actuarial (gain) loss (793) (286) 109
Amortization of net actuarial (loss) gain 1,674 1,912 2,490
Change in prior service cost 0 0 (3,307)
Amortization of prior service costs 569 569 569
Settlement gain (loss) 0 0 0
Equity method investments 0 0 0
Other 0 0 0
(Gain) loss recognized in Other comprehensive income (loss) $ 1,450 $ 2,195 $ (139)