CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Income Statement [Abstract]
Net sales	$ 2,147,767		$ 2,024,130		$ 1,954,258
Cost of sales	1,198,452		1,150,766		1,150,558
Gross profit	949,315		873,364		803,700
Selling, general and administrative expenses	504,419		477,851		444,490
Asset impairments	0		0		198,519
Restructuring expenses	13,672		0		32,473
Operating income	431,224	[1]	395,513	[1]	128,218	[1]
Other (income) expense — net	(3,111)		178		(236)
Interest expense	41,895		42,206		42,250
Income before income taxes	392,440		353,129		86,204
Provision for income taxes	113,054		97,914		48,574
Net income	$ 279,386		$ 255,215		$ 37,630
Earnings per common share:
Basic earnings per common share	$ 3.48		$ 3.11		$ 0.45
Diluted earnings per common share	$ 3.45		$ 3.09		$ 0.45
Share data:
Basic weighted average common shares outstanding	79,715		81,517		82,689
Diluted weighted average common shares outstanding	80,728		82,489		83,641

[1] Segment operating income (loss) excludes net unallocated corporate operating expenses.