Accumulated Other Comprehensive Income (Loss) (Components of Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	[1]	$ (170,255)	[2]	$ 172,119
Before reclassifications to income	[1]	(593,918)		(350,894)
Reclassifications to income	[1]	59,631		8,520
Net other comprehensive income (loss)		(534,287)	[1]	(342,374)	[1]	$ (236,782)
Ending Balance	[1]	(704,542)		(170,255)	[2]	172,119
Reclassifications before taxes, included in net periodic benefit expense		21,721		9,813
Reclassifications income tax, included in net periodic benefit expense		5,761		3,206
Reclassifications before taxes, included in interest expense		2,963		2,963
Reclassifications income tax, included in interest expense		1,037		1,028
Foreign Currency Translation Gains (Losses) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	[1]	33,701		305,192
Before reclassifications to income	[1]	(588,450)		(271,491)
Reclassifications to income	[1],[3]	41,745
Net other comprehensive income (loss)	[1]	(546,705)		(271,491)
Ending Balance	[1]	(513,004)		33,701		305,192
Retirement and Postretirement Benefit Plan Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	[1]	(189,752)		(116,956)
Before reclassifications to income	[1]	(5,468)		(79,403)
Reclassifications to income	[1],[4]	15,960		6,607
Net other comprehensive income (loss)	[1]	10,492		(72,796)
Ending Balance	[1]	(179,260)		(189,752)		(116,956)
Deferred Loss On Interest Rate Derivative Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	[1]	(14,204)		(16,117)
Reclassifications to income	[1],[5]	1,926		1,913
Net other comprehensive income (loss)	[1]	1,926		1,913
Ending Balance	[1]	$ (12,278)		$ (14,204)		$ (16,117)

[1] All amounts are presented net of income taxes.

[2] Reclassified to conform to current presentation.

[3] Reclassification for the year ended December 31, 2015 are included in discontinued operations and primarily relate to financial adjustments recognized upon selling all operational assets in the U.K.

[4] Reclassifications before taxes of $9,813 and $21,721 are included in the computation of net periodic benefit expense in 2014 and 2015, respectively. See Note K for additional information. Related income taxes of $3,206 and $5,761 are included in income tax expense in 2014 and 2015, respectively.

[5] Reclassifications before taxes of $2,963 are included in Interest expense in both 2014 and 2015. Related income taxes of $1,028 and $1,037 are included in income tax expense in 2014 and 2015, respectively.