CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Net loss	$ (151,391)	$ (34,492)	$ (243,569)	$ (83,936)
Other comprehensive income (loss):
Change in pension and postretirement benefit plans (net of tax: $2,154 and 4,322 and $2,883 and $5,765 for the three and six months ended June 30, 2014 and 2013, respectively)	3,498	4,658	7,017	9,317
Change in unrealized gain on hedges (net of tax: $1,034 for the six months ended June 30,2014 and $324 and $667 for the three and six months ended June 30, 2013, respectively)		526	1,679	1,248
Change in foreign currency translation adjustment	11,264	(1,461)	13,428	(17,086)
Change in unrealized gain (loss) on investments, net of tax		(1)		43
Total other comprehensive income (loss)	14,762	3,722	22,124	(6,478)
Total comprehensive loss	$ (136,629)	$ (30,770)	$ (221,445)	$ (90,414)