Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Statement [Abstract]
Net revenue	$ 2,471,669	$ 2,386,126	$ 7,285,032	$ 6,948,365
Cost of goods sold	2,165,315	2,093,643	6,382,740	6,092,413
Gross margin	306,354	292,483	902,292	855,952
Selling, general and administrative expenses	231,847	231,377	697,170	682,825
Acquisition-related and exit and realignment charges	6,134	13,957	21,757	24,813
Depreciation and amortization	15,112	13,841	46,441	41,597
Other operating income, net	(311)	(2,069)	(5,484)	(12,046)
Operating earnings	53,572	35,377	142,408	118,763
Interest expense, net	6,744	4,304	20,305	10,893
Loss on early retirement of debt	0	14,890	0	14,890
Income before income taxes	46,828	16,183	122,103	92,980
Income tax provision	18,652	9,028	50,761	40,464
Net income	$ 28,176	$ 7,155	$ 71,342	$ 52,516
Net income per common share:
Basic (in usd per share)	$ 0.45	$ 0.11	$ 1.14	$ 0.84
Diluted (in usd per share)	0.45	0.11	1.14	0.84
Cash dividends in USD per common share	$ 0.2525	$ 0.25	$ 0.7575	$ 0.75