Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash flows provided by (used in) operating activities:
Net income	$ 75,479	$ 84,962
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	76,511	85,636
Rationalization charges	2,449	2,284
Loss on early extinguishment of debt	1,474	2,068
Excess tax benefit from stock-based compensation	(1,037)	(552)
Other changes that provided (used) cash, net of effects from acquisitions:
Trade accounts receivable, net	(116,359)	(124,761)
Inventories	(234,603)	(207,040)
Trade accounts payable	42,724	28,058
Accrued liabilities	12,966	(7,972)
Other, net	(22,428)	(21,839)
Net cash used in operating activities	(162,824)	(159,156)
Cash flows provided by (used in) investing activities:
Purchases of businesses, net of cash acquired	0	(6,000)
Capital expenditures	(60,004)	(53,048)
Proceeds from asset sales	372	6,411
Net cash used in investing activities	(59,632)	(52,637)
Cash flows provided by (used in) financing activities:
Borrowings under revolving loans	678,872	593,424
Repayments under revolving loans	(340,779)	(70,720)
Proceeds from issuance of long-term debt	732,215	0
Repayments of long-term debt	(751,509)	(304,778)
Debt issuance costs	(5,019)	0
Changes in outstanding checks - principally vendors	(86,538)	(73,454)
Dividends paid on common stock	(19,356)	(18,144)
Excess tax benefit from stock-based compensation	1,037	552
Repurchase of common stock under stock plan	(5,267)	(2,160)
Repurchase of common stock under share repurchase authorization	(7,735)	(265,340)
Net cash provided by (used in) financing activities	195,921	(140,620)
Cash and cash equivalents:
Net decrease	(26,535)	(352,413)
Balance at beginning of year	160,463	465,608
Balance at end of period	133,928	113,195
Interest paid, net	33,762	28,753
Income taxes paid, net	$ 25,056	$ 51,787