CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Statement [Abstract]
Net sales	$ 645,166	$ 715,777	$ 1,967,806	$ 2,129,370
Cost of goods sold	446,272	474,168	1,322,741	1,411,158
Gross profit	198,894	241,609	645,065	718,212
Selling, general & administrative expenses	128,299	136,424	385,945	419,495
Rationalization and asset impairment charges	18,285	29,068	19,524	29,887
Pension settlement charges	136,331	0	136,331	0
Operating income (loss)	(84,021)	76,117	103,265	268,830
Other income (expense):
Interest income	692	627	2,023	2,465
Equity earnings in affiliates	310	1,172	2,138	4,308
Other income	296	1,043	3,223	3,204
Interest expense	(5,803)	(1,174)	(12,034)	(3,730)
Total other income (expense)	(4,505)	1,668	(4,650)	6,247
Income (loss) before income taxes	(88,526)	77,785	98,615	275,077
Income taxes	(28,045)	32,953	19,902	96,532
Net income (loss) including non-controlling interests	(60,481)	44,832	78,713	178,545
Non-controlling interests in subsidiaries’ loss	(15)	(857)	(73)	(929)
Net income (loss)	$ (60,466)	$ 45,689	$ 78,786	$ 179,474
Basic earnings (loss) per share (in dollars per share)	$ (0.82)	$ 0.58	$ 1.05	$ 2.25
Diluted earnings (loss) per share (in dollars per share)	(0.82)	0.57	1.04	2.22
Cash dividends declared per share (in dollars per share)	$ 0.29	$ 0.23	$ 0.87	$ 0.69