CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Income Statement [Abstract]
Net sales	$ 691,875	$ 697,552	$ 2,137,880	$ 2,168,719
Cost of goods sold	459,178	484,190	1,438,273	1,515,095
Gross profit	232,697	213,362	699,607	653,624
Selling, general & administrative expenses	131,217	121,602	403,323	372,931
Rationalization and asset impairment charges	6,302	3,059	8,204	4,317
Operating income	95,178	88,701	288,080	276,376
Other income (expense):
Interest income	536	916	2,452	2,648
Equity earnings in affiliates	1,170	1,566	3,687	4,264
Other income	1,514	746	3,141	2,015
Interest expense	(558)	(1,040)	(2,307)	(3,338)
Total other income	2,662	2,188	6,973	5,589
Income before income taxes	97,840	90,889	295,053	281,965
Income taxes	33,588	26,153	91,431	86,715
Net income including non-controlling interests	64,252	64,736	203,622	195,250
Non-controlling interests in subsidiaries’ loss	(1,792)	(29)	(1,834)	(77)
Net income	$ 66,044	$ 64,765	$ 205,456	$ 195,327
Basic earnings per share (in dollars per share)	$ 0.81	$ 0.78	$ 2.50	$ 2.35
Diluted earnings per share (in dollars per share)	$ 0.80	$ 0.77	$ 2.47	$ 2.32
Cash dividends declared per share (in dollars per share)	$ 0.20	$ 0.17	$ 0.60	$ 0.51