CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ (14,441)		$ 155,253
Other comprehensive income (loss), net of tax
Net loss from foreign currency translation	(298,595)		(136,604)
Retirement and postretirement benefit plans	3,294		1,465
Deferred loss on interest rate hedges reclassified to interest expense	482		483
Other comprehensive loss	(294,819)	[1]	(134,656)
Comprehensive Income (Loss)	$ (309,260)		$ 20,597

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