Accumulated Other Comprehensive Loss (Components of Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2016		Mar. 31, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	[1]	$ (704,542)
Before reclassifications to income	[1]	148,672
Reclassifications to income	[1]	2,995
Net other comprehensive income (loss)		151,667	[1]	$ (294,819)
Ending Balance	[1]	(552,875)
Reclassifications before taxes, included in net periodic benefit expense		3,867
Reclassifications income tax, included in net periodic benefit expense		1,354
Reclassifications before taxes, included in interest expense		741
Reclassifications income tax, included in interest expense		259
Foreign Currency Translation Gains (Losses) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	[1]	(513,004)
Before reclassifications to income	[1]	148,669
Net other comprehensive income (loss)	[1]	148,669
Ending Balance	[1]	(364,335)
Retirement and Postretirement Benefit Plan Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	[1]	(179,260)
Before reclassifications to income	[1]	3
Reclassifications to income	[1],[2]	2,513
Net other comprehensive income (loss)	[1]	2,516
Ending Balance	[1]	(176,744)
Deferred Loss On Interest Rate Derivative Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	[1]	(12,278)
Reclassifications to income	[1],[3]	482
Net other comprehensive income (loss)	[1]	482
Ending Balance	[1]	$ (11,796)

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

[2] Reclassifications before taxes of $3,867 for the three-month period ended March 31, 2016 are included in the computation of net periodic benefit expense. See Note G for additional information. Related income taxes of $1,354 for the three-month period ended March 31, 2016 are included in Income tax expense.

[3] Reclassifications before taxes of $741 for the three-month period ended March 31, 2016 are included in Interest expense. Related income taxes of $259 for the three month period ended March 31, 2016 are included in Income tax expense.