CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Net loss	$ (100,724)	$ (1,061,956)	$ (184,660)	$ (989,404)
Other comprehensive income (loss), net of tax:
Change in pension and postretirement benefit plans, (net of tax expense: $2,882 and $2,422 and $8,647 and $7,266 for the three and nine months ended September 30, 2013 and 2012, respectively)	4,659	3,898	13,976	11,693
Change in unrealized gain (loss) on hedges, (net of tax expense (benefit)): $409 and $(339) and $1,076 and $(2,381) for the three and nine months ended September 30, 2013 and 2012, respectively)	653	(545)	1,901	(3,815)
Change in foreign currency translation adjustment	14,847	3,132	(2,239)	2,342
Change in unrealized gain (loss) on investments, net of tax	(940)	1,135	(897)	766
Total other comprehensive income, net of tax	19,219	7,620	12,741	10,986
Total comprehensive loss	$ (81,505)	$ (1,054,336)	$ (171,919)	$ (978,418)