CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Net income (loss)	$ 133,900	$ (47,800)	$ 272,600	$ 84,100
Other comprehensive income, net of tax
Change in derivative instruments designated as cash flow hedges	(300)	500	2,000
Foreign currency translation adjustments	(43,900)	22,400	(39,200)	51,300
Benefit plan adjustments	1,700	1,300	3,400	2,600
Available-for-sale securities		(1,700)		(2,100)
Other comprehensive income (loss)	(42,500)	22,500	(33,800)	51,800
Comprehensive income (loss)	$ 91,400	$ (25,300)	$ 238,800	$ 135,900