Pension and Postretirement Benefits (Change in Benefit Obligation) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
U.S Defined Benefit Plans
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Balance —	$ 405,812		$ 423,547
Service cost	22,981		23,355		21,222
Interest cost	17,429		15,089		16,458
Plan amendments	2387		0
Actuarial loss (gain)	32,425	[1]	(22,356)
Benefits paid	(33,482)		(33,823)
Balance —	447,552		405,812		423,547
Accumulated benefit obligations	447,552		405,812
Non-U.S Defined Benefit Plans
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Balance —	363,425		340,348
Service cost	6,857		6,819		4,681
Interest cost	14,576		13,486		13,724
Employee contributions	272		267
Plan amendments and other	162		1,573
Actuarial loss (gain)	28,430	[2]	8,664	[2]
Benefits paid	(17,985)		(16,491)
Currency translation impact	(34,386)	[3]	8,759	[3]
Balance —	361,351		363,425		340,348
Accumulated benefit obligations	335,282		340,223
Postretirement Medical Benefits
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Balance —	31,477		34,967
Service cost	3		6		11
Interest cost	1,200		1,066		1,462
Employee contributions	901		2,151
Medicare subsidies receivable	453		789
Actuarial loss (gain)	1,779		(857)
Plan Amendments	2,339		0
Benefits paid	(5,133)		(6,645)
Balance —	$ 33,019		$ 31,477		$ 34,967

[1] The 2014 actuarial loss primarily reflects the impact of decrease in the discount rate.

[2] The 2014 actuarial losses primarily reflect the impact of decrease in the discount rates in all countries except for Venezuela.

[3] The currency translation impact reflects the strengthening of the U.S. dollar against our significant currencies, primarily the Euro and British pound.