Pensions and Other Benefit Programs (Components of Net Periodic Benefit Cost (Income)) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Defined Benefit Pension Plans | United States
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 26	$ 21
Interest cost	13,179	15,878
Expected return on plan assets	(21,304)	(23,179)
Amortization of transition credit	0	0
Amortization of prior service (credit) cost	(15)	(15)
Amortization of net actuarial loss	8,198	7,036
Settlement	389	0
Net periodic benefit cost (income)	473	(259)
Contributions to benefit plans	1,929	1,628
Defined Benefit Pension Plans | Foreign
Defined Benefit Plan Disclosure [Line Items]
Service cost	399	384
Interest cost	3,518	4,488
Expected return on plan assets	(8,208)	(8,764)
Amortization of transition credit	(1)	(2)
Amortization of prior service (credit) cost	61	63
Amortization of net actuarial loss	2,059	1,612
Settlement	0	0
Net periodic benefit cost (income)	(2,172)	(2,219)
Contributions to benefit plans	7,988	8,210
Nonpension Postretirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	217	255
Interest cost	1,245	1,654
Expected return on plan assets	0	0
Amortization of transition credit	0	0
Amortization of prior service (credit) cost	93	80
Amortization of net actuarial loss	736	511
Settlement	0	0
Net periodic benefit cost (income)	2,291	2,500
Contributions to benefit plans	$ 4,455	$ 4,756