Pensions and Other Benefit Programs (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
United States
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1,241	$ 3,597	$ 5,679	$ 10,890
Interest cost	19,415	18,264	58,247	55,169
Expected return on plan assets	(25,956)	(26,781)	(77,868)	(80,908)
Amortization of transition credit	0	0	0	0
Amortization of prior service cost	2	95	6	318
Amortization of net actuarial loss	6,470	7,690	18,894	26,234
Settlement	0	145	0	1,561
Special termination benefits	0	0	0	548
Curtailment			0	814
Net periodic benefit cost	1,172	3,010	4,958	14,626
Foreign
Defined Benefit Plan Disclosure [Line Items]
Service cost	898	968	2,719	5,280
Interest cost	7,219	1,870	21,664	25,246
Expected return on plan assets	(9,914)	(3,266)	(29,719)	(31,187)
Amortization of transition credit	(3)	(2)	(8)	(6)
Amortization of prior service cost	(15)	28	(45)	84
Amortization of net actuarial loss	2,093	2,873	6,272	11,511
Settlement	0	0	0	0
Special termination benefits	0	104	0	104
Curtailment			0	0
Net periodic benefit cost	278	2,575	883	11,032
Nonpension Postretirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	632	935	2,057	2,966
Interest cost	2,509	2,186	7,451	7,210
Expected return on plan assets	0	0	0	0
Amortization of transition credit	0	0	0	0
Amortization of prior service cost	40	40	120	122
Amortization of net actuarial loss	1,462	1,573	4,486	6,293
Settlement	0	0	0	0
Special termination benefits	0	0	0	0
Curtailment			0	0
Net periodic benefit cost	$ 4,643	$ 4,734	$ 14,114	$ 16,591