Pensions and Other Benefit Programs (Components of Net Periodic Benefit (Income) Cost) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Nonpension Postretirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 92	$ 98	$ 277	$ 275
Interest cost	1,090	1,163	3,361	3,774
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)	(506)	(977)	(1,093)	(1,690)
Settlement	0	0	0	0
Net periodic benefit (income) cost	676	284	2,545	2,359
Contributions to benefit plans	2,423	2,330	10,024	8,947
United States | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	12	11	36	31
Interest cost	14,468	15,440	44,400	47,618
Expected return on plan assets	(21,551)	(21,280)	(65,369)	(64,506)
Amortization of prior service (credit) cost	(5)	(5)	(15)	(15)
Amortization of net actuarial loss (gain)	4,758	4,209	14,702	13,042
Settlement	0	366	0	680
Net periodic benefit (income) cost	(2,318)	(1,259)	(6,246)	(3,150)
Contributions to benefit plans	1,221	2,722	3,542	5,756
Foreign | Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	189	190	561	578
Interest cost	5,298	5,379	15,666	15,935
Expected return on plan assets	(6,557)	(7,575)	(19,409)	(22,434)
Amortization of prior service (credit) cost	76	72	223	214
Amortization of net actuarial loss (gain)	1,968	525	5,804	1,552
Settlement	0	0	0	0
Net periodic benefit (income) cost	974	(1,409)	2,845	(4,155)
Contributions to benefit plans	$ 329	$ 491	$ 7,707	$ 16,036