Employee and Retiree Benefit Plans - Schedule of Plans' Benefit Obligations and Fair Value of Assets and Statement of Funded Status (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Change in plan assets
Beginning balance	$ 492,120
Ending balance	527,079	$ 492,120
Pension Benefits
Change in benefit obligation
Beginning balance	655,324	699,151
Service cost	7,094	7,042	$ 6,542
Interest cost	33,798	33,554	34,140
Participant contributions	0	0
Actuarial (gain) loss	1,175	(35,417)
Medicare Part D subsidy	0	0
Exchange rate changes	8,010	(3,263)
Benefits paid	(45,907)	(45,743)
Ending balance	659,494	655,324	699,151
Change in plan assets
Beginning balance	492,120	477,809
Actual return on plan assets	48,285	27,317
Employer contributions	25,067	35,477
Participant contributions	0	0
Medicare Part D subsidy	0	0
Exchange rate changes	7,514	(2,740)
Benefits paid	(45,907)	(45,743)
Ending balance	527,079	492,120	477,809
Funded status and amounts recognized in the Consolidated Balance Sheets at December 31
Deferred charges and other assets	14,925	1,819
Other accrued liabilities	(10,354)	(10,617)
Deferred credits and other liabilities	(136,986)	(154,406)
Funded status and net plan liability recognized at December 31	(132,415)	(163,204)
Other Postretirement Benefits
Change in benefit obligation
Beginning balance	54,994	63,808
Service cost	382	436	495
Interest cost	3,261	2,923	3,241
Participant contributions	2,762	2,730
Actuarial (gain) loss	17,681	825
Medicare Part D subsidy	383	358
Exchange rate changes	9	(14)
Benefits paid	(16,073)	(16,072)
Ending balance	63,399	54,994	63,808
Change in plan assets
Beginning balance	0	0
Actual return on plan assets	0	0
Employer contributions	12,928	12,984
Participant contributions	2,762	2,730
Medicare Part D subsidy	383	358
Exchange rate changes	0	0
Benefits paid	(16,073)	(16,072)
Ending balance	0	0	$ 0
Funded status and amounts recognized in the Consolidated Balance Sheets at December 31
Deferred charges and other assets	0	0
Other accrued liabilities	(4,663)	(4,237)
Deferred credits and other liabilities	(58,736)	(50,757)
Funded status and net plan liability recognized at December 31	$ (63,399)	$ (54,994)