Pensions and Other Benefit Programs (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2015		Jun. 30, 2014		Jun. 30, 2015	Jun. 30, 2014
United States
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 38		$ 2,023		$ 76	$ 4,438
Interest cost	18,305		19,416		37,164	38,832
Expected return on plan assets	(25,958)		(25,956)		(52,002)	(51,912)
Amortization of transition credit	0		0		0	0
Amortization of prior service cost (credit)	2		2		4	4
Amortization of net actuarial loss	7,007		6,264		14,655	12,424
Settlement / curtailment	0	[1]	821	[1]	0	3,371
Net periodic benefit (income) cost	(606)		2,570		(103)	7,157
Foreign
Defined Benefit Plan Disclosure [Line Items]
Service cost	555		913		1,120	1,821
Interest cost	6,122		7,276		12,185	14,445
Expected return on plan assets	(8,935)		(9,980)		(17,774)	(19,805)
Amortization of transition credit	(3)		(3)		(5)	(5)
Amortization of prior service cost (credit)	(16)		(15)		(33)	(30)
Amortization of net actuarial loss	1,509		2,103		2,989	4,179
Settlement / curtailment	0	[1]	0	[1]	0	0
Net periodic benefit (income) cost	(768)		294		(1,518)	605
Nonpension Postretirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	640		697		1,319	1,425
Interest cost	2,151		2,480		4,526	4,942
Expected return on plan assets	0		0		0	0
Amortization of transition credit	0		0		0	0
Amortization of prior service cost (credit)	74		40		148	80
Amortization of net actuarial loss	1,562		1,502		3,953	3,024
Settlement / curtailment	0	[1]	0	[1]	0	0
Net periodic benefit (income) cost	$ 4,427		$ 4,719		$ 9,946	$ 9,471

[1] Included in restructuring charges and asset impairments, net in the Condensed Consolidated Statements of Income.