Pensions and Other Benefit Programs (Components of Net Periodic Benefit Cost (Income)) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Nonpension Postretirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 88	$ 179	$ 177	$ 358
Interest cost	1,306	939	2,611	1,879
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)	(357)	88	(713)	175
Settlement	0	0	0	0
Net periodic benefit (income) cost	1,037	1,206	2,075	2,412
Contributions to benefit plans	2,838	3,490	6,616	7,648
United States | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	10	24	20	48
Interest cost	16,089	11,141	32,178	22,282
Expected return on plan assets	(21,613)	(17,862)	(43,226)	(35,725)
Amortization of prior service (credit) cost	(5)	(11)	(10)	(22)
Amortization of net actuarial loss (gain)	4,416	8,232	8,833	16,464
Settlement	314	0	314	0
Net periodic benefit (income) cost	(789)	1,524	(1,891)	3,047
Contributions to benefit plans	1,908	1,148	3,035	2,298
Foreign | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	194	332	388	687
Interest cost	5,334	3,450	10,556	7,084
Expected return on plan assets	(7,515)	(6,809)	(14,859)	(14,014)
Amortization of prior service (credit) cost	72	64	142	132
Amortization of net actuarial loss (gain)	522	1,726	1,027	3,547
Settlement	0	0	0	0
Net periodic benefit (income) cost	(1,393)	(1,237)	(2,746)	(2,564)
Contributions to benefit plans	$ 512	$ 392	$ 15,545	$ 8,613