Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Statement [Abstract]
Net revenue	$ 2,305,858	$ 2,236,077	$ 4,562,239	$ 4,482,461
Cost of goods sold	2,023,586	1,962,646	3,998,771	3,929,979
Gross margin	282,272	273,431	563,468	552,482
Selling, general and administrative expenses	225,838	212,548	451,448	430,269
Acquisition-related and exit and realignment charges	7,593	638	10,855	2,648
Depreciation and amortization	13,892	12,276	27,756	24,905
Other operating income, net	(2,152)	(2,081)	(9,978)	(3,274)
Operating earnings	37,101	50,050	83,387	97,934
Interest expense, net	3,342	3,248	6,589	6,446
Income before income taxes	33,759	46,802	76,798	91,488
Income tax provision	13,883	17,930	31,436	36,518
Net income	$ 19,876	$ 28,872	$ 45,362	$ 54,970
Net income per common share:
Basic (in usd per share)	$ 0.32	$ 0.46	$ 0.72	$ 0.87
Diluted (in usd per share)	$ 0.32	$ 0.46	$ 0.72	$ 0.87
Cash dividends in USD per common share	$ 0.25	$ 0.24	$ 0.5	$ 0.48