CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Statement [Abstract]
Net sales	$ 664,740	$ 728,531	$ 1,322,640	$ 1,413,593
Cost of goods sold	438,959	478,264	876,469	936,990
Gross profit	225,781	250,267	446,171	476,603
Selling, general & administrative expenses	127,755	137,156	257,646	283,071
Rationalization and asset impairment charges	1,239	836	1,239	819
Operating income	96,787	112,275	187,286	192,713
Other income (expense):
Interest income	738	924	1,331	1,838
Equity earnings in affiliates	979	1,575	1,828	3,136
Other income	317	1,078	2,927	2,161
Interest expense	(4,387)	(986)	(6,231)	(2,556)
Total other income (expense)	(2,353)	2,591	(145)	4,579
Income before income taxes	94,434	114,866	187,141	197,292
Income taxes	23,558	37,577	47,947	63,579
Net income including non-controlling interests	70,876	77,289	139,194	133,713
Non-controlling interests in subsidiaries’ loss	(22)	(43)	(58)	(72)
Net income	$ 70,898	$ 77,332	$ 139,252	$ 133,785
Basic earnings per share (in dollars per share)	$ 0.95	$ 0.97	$ 1.84	$ 1.67
Diluted earnings per share (in dollars per share)	0.94	0.96	1.82	1.65
Cash dividends declared per share (in dollars per share)	$ 0.29	$ 0.23	$ 0.58	$ 0.46