CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Statement [Abstract]
Net sales	$ 530,356	$ 503,791	$ 1,582,624	$ 1,520,870
Cost of sales	299,467	280,531	884,342	839,954
Gross profit	230,889	223,260	698,282	680,916
Selling, general and administrative expenses	119,965	114,794	371,825	360,784
Restructuring expenses	0	4,723	0	4,723
Loss (gain) on sale of businesses - net	2,067	(18,070)	2,067	(18,070)
Operating income	108,857	121,813	324,390	333,479
Other (income) expense - net	(2,364)	(693)	(4,982)	(1,589)
Interest expense	11,913	10,229	33,607	31,410
Income before income taxes	99,308	112,277	295,765	303,658
Provision for income taxes	29,435	32,772	82,003	88,614
Net income	$ 69,873	$ 79,505	$ 213,762	$ 215,044
Basic earnings per common share (in dollars per share)	$ 0.92	$ 1.03	$ 2.81	$ 2.77
Diluted earnings per common share (in dollars per share)	$ 0.91	$ 1.02	$ 2.78	$ 2.75
Share data:
Basic weighted average common shares outstanding (in shares)	75,819	76,831	75,753	77,431
Diluted weighted average common shares outstanding (in shares)	76,880	77,646	76,742	78,266