Pensions and Other Benefit Programs (Components of Net Periodic Benefit (Income) Cost) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Nonpension Postretirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 93	$ 88	$ 185	$ 177
Interest cost	1,135	1,306	2,271	2,611
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)	(292)	(357)	(587)	(713)
Settlement	0	0	0	0
Net periodic benefit (income) cost	936	1,037	1,869	2,075
Contributions to benefit plans	3,901	2,838	7,601	6,616
United States | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	12	10	24	20
Interest cost	14,966	16,089	29,932	32,178
Expected return on plan assets	(21,909)	(21,613)	(43,818)	(43,226)
Amortization of prior service (credit) cost	(5)	(5)	(10)	(10)
Amortization of net actuarial loss (gain)	4,972	4,416	9,944	8,833
Settlement	0	314	0	314
Net periodic benefit (income) cost	(1,964)	(789)	(3,928)	(1,891)
Contributions to benefit plans	1,252	1,908	2,321	3,035
Foreign | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	184	194	372	388
Interest cost	5,167	5,334	10,368	10,556
Expected return on plan assets	(6,402)	(7,515)	(12,852)	(14,859)
Amortization of prior service (credit) cost	73	72	147	142
Amortization of net actuarial loss (gain)	1,913	522	3,836	1,027
Settlement	0	0	0	0
Net periodic benefit (income) cost	935	(1,393)	1,871	(2,746)
Contributions to benefit plans	$ 380	$ 512	$ 7,378	$ 15,545