CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Statement [Abstract]
Net sales	$ 2,020,668	$ 2,147,767	$ 2,024,130
Cost of sales	1,116,353	1,198,452	1,150,766
Gross profit	904,315	949,315	873,364
Selling, general and administrative expenses	479,408	504,419	477,851
Gain on sale of business	(18,070)	0	0
Restructuring expenses	11,239	13,672	0
Operating income	431,738	431,224	395,513
Other (income) expense — net	(2,243)	(3,111)	178
Interest expense	41,636	41,895	42,206
Income before income taxes	392,345	392,440	353,129
Provision for income taxes	109,538	113,054	97,914
Net income	$ 282,807	$ 279,386	$ 255,215
Earnings per common share:
Basic earnings per common share	$ 3.65	$ 3.48	$ 3.11
Diluted earnings per common share	$ 3.62	$ 3.45	$ 3.09
Share data:
Basic weighted average common shares outstanding	77,126	79,715	81,517
Diluted weighted average common shares outstanding	77,972	80,728	82,489