Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash flows provided by (used in) operating activities:
Net income	$ 158,755	$ 162,137
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	114,211	127,087
Rationalization charges	4,978	3,616
Loss on early extinguishment of debt	1,474	2,068
Excess tax benefit from stock-based compensation	(3,403)	(444)
Other changes that provided (used) cash, net of effects from acquisitions:
Trade accounts receivable, net	(291,837)	(258,090)
Inventories	(81,553)	(25,022)
Trade accounts payable	26,698	492
Accrued liabilities	43,040	10,520
Other, net	(24,909)	(21,325)
Net cash (used in) provided by operating activities	(52,546)	1,039
Cash flows provided by (used in) investing activities:
Purchases of businesses, net of cash acquired	(17,714)	(6,000)
Capital expenditures	(94,290)	(79,950)
Proceeds from asset sales	1,202	6,722
Net cash used in investing activities	(110,802)	(79,228)
Cash flows provided by (used in) financing activities:
Borrowings under revolving loans	757,960	655,685
Repayments under revolving loans	(434,950)	(531,118)
Proceeds from issuance of long-term debt	732,215	304,981
Repayments of long-term debt	(753,168)	(306,444)
Debt issuance costs	(5,019)	(5,700)
Changes in outstanding checks - principally vendors	(86,538)	(73,454)
Dividends paid on common stock	(29,007)	(27,173)
Excess tax benefit from stock-based compensation	3,403	444
Repurchase of common stock under stock plan	(11,456)	(2,560)
Repurchase of common stock under share repurchase authorization	(24,666)	(267,607)
Net cash provided by (used in) financing activities	148,774	(252,946)
Cash and cash equivalents:
Net decrease	(14,574)	(331,135)
Balance at beginning of year	160,463	465,608
Balance at end of period	145,889	134,473
Interest paid, net	49,632	37,513
Income taxes paid, net	$ 40,093	$ 89,344