Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Cash flows from operating activities:
Net earnings	$ 269,493	$ 232,148	$ 172,593
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation	31,689	29,686	29,634
Amortization	17,808	14,842	11,844
Deferred tax provision	2,592	4,058	3,766
Excess tax benefits from share-based payment arrangements	(12,612)	(9,017)	(2,137)
Share-based compensation	12,270	12,385	11,367
Other	(524)	3,499	166
Increase (decrease) in cash resulting from changes in:
Trade accounts receivable, net	(53,964)	(55,025)	37,071
Inventories	(20,281)	(40,417)	7,817
Other current assets	(301)	(20,107)	(5,801)
Trade accounts payable	27,551	31,696	(9,416)
Taxes payable	5,374	6,613	(6,844)
Accruals and other	1,785	57,918	(17,455)
Net cash provided by operating activities	280,880	268,279	232,605
Cash flows from investing activities:
Proceeds from sale of property, plant and equipment	2,485	350	2,081
Purchase of property, plant and equipment	(98,500)	(73,943)	(60,041)
Acquisitions	(35,373)	(13,064)	(14,620)
Proceeds from divestiture	0	9,750	0
Other investing activities	(903)	(108)	0
Net cash used in investing activities	(132,291)	(77,015)	(72,580)
Cash flows from financing activities:
Proceeds from borrowings	469,599	714,575	261,436
Repayments of borrowings	(647,694)	(329,536)	(422,812)
Proceeds from exercise of stock options	20,770	20,455	11,068
Repurchases of common stock	(204,578)	(239,998)	(5,988)
Excess tax benefits from share-based payment arrangements	12,612	9,017	2,137
Acquisition Contingent Consideration Payment	(7,750)	0	0
Debt issuance costs	(3,144)	0	(670)
Debt extinguishment costs	0	0	(1,316)
Other financing activities	(284)	(6,590)	(1,298)
Net cash provided by (used in) financing activities	(360,469)	167,923	(157,443)
Effect of exchange rate changes on cash and cash equivalents	(96)	3,359	4,376
Net increase (decrease) in cash and cash equivalents	(211,976)	362,546	6,958
Cash and cash equivalents:
Cash and Cash Equivalents, at Carrying Value, Beginning	447,577	85,031	78,073
Cash and Cash Equivalents, at Carrying Value, End	235,601	447,577	85,031
Supplemental disclosures of cash flow information:
Interest	17,804	15,019	19,256
Taxes	$ 69,656	$ 60,101	$ 51,361