Pensions and Other Benefit Programs (Components of Net Periodic Benefit Cost (Income)) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Defined Benefit Pension Plans | United States
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 24	$ 105	$ 48	$ 131
Interest cost	11,141	10,744	22,282	21,489
Expected return on plan assets	(17,862)	(19,478)	(35,725)	(38,956)
Amortization of prior service (credit) cost	(11)	(15)	(22)	(30)
Amortization of net actuarial loss	8,232	9,639	16,464	19,277
Settlement	0	314	0	314
Net periodic benefit cost (income)	1,524	1,309	3,047	2,225
Contributions to benefit plans	1,148	1,845	2,298	2,860
Defined Benefit Pension Plans | Foreign
Defined Benefit Plan Disclosure [Line Items]
Service cost	332	314	687	709
Interest cost	3,450	3,007	7,084	5,968
Expected return on plan assets	(6,809)	(8,107)	(14,014)	(16,091)
Amortization of prior service (credit) cost	64	68	132	135
Amortization of net actuarial loss	1,726	2,380	3,547	4,725
Settlement	0	0	0	0
Net periodic benefit cost (income)	(1,237)	(2,338)	(2,564)	(4,554)
Contributions to benefit plans	392	328	8,613	9,024
Nonpension Postretirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	179	226	358	450
Interest cost	939	964	1,879	1,925
Expected return on plan assets	0	0	0	0
Amortization of prior service (credit) cost	0	33	0	65
Amortization of net actuarial loss	88	1,077	175	2,155
Settlement	0	0	0	0
Net periodic benefit cost (income)	1,206	2,300	2,412	4,595
Contributions to benefit plans	$ 3,490	$ 3,380	$ 7,648	$ 6,900