Pension (Net Pension Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost (benefits earned during the period)	$ 7,330	$ 5,928	$ 7,601
Interest cost on projected benefit obligation	19,047	20,944	19,074
Expected return on plan assets	(25,108)	(24,834)	(24,369)
Amortization of unrecognized:
Prior service cost	173	1,223	1,336
Actuarial loss	8,890	5,069	9,523
Transition obligations	0	60	84
Settlement charge	21,587	774	2,252
Curtailment charge (credit)	(14)	0	0
Pension expense	31,905	9,164	15,501
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost (benefits earned during the period)	4,365	3,664	4,739
Interest cost on projected benefit obligation	14,715	15,378	14,093
Expected return on plan assets	(22,661)	(22,387)	(22,374)
Amortization of unrecognized:
Prior service cost	417	1,059	1,172
Actuarial loss	7,291	4,057	8,604
Transition obligations	0	0	0
Settlement charge	13	483	1,805
Curtailment charge (credit)	0	0	0
Pension expense	4,140	2,254	8,039
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost (benefits earned during the period)	2,965	2,264	2,862
Interest cost on projected benefit obligation	4,332	5,566	4,981
Expected return on plan assets	(2,447)	(2,447)	(1,995)
Amortization of unrecognized:
Prior service cost	(244)	164	164
Actuarial loss	1,599	1,012	919
Transition obligations	0	60	84
Settlement charge	21,574	291	447
Curtailment charge (credit)	(14)	0	0
Pension expense	$ 27,765	$ 6,910	$ 7,462