Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Cash flows from operating activities:
Net earnings	$ 290,847	$ 269,493	$ 232,148
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation	33,421	31,689	29,686
Amortization	21,357	17,808	14,842
Deferred tax provision	5,420	2,592	4,058
Excess tax benefits from share-based payment arrangements	(9,365)	(12,612)	(9,017)
Share-based compensation	13,185	12,270	12,385
Other	1,455	(524)	3,499
Increase (decrease) in cash resulting from changes in:
Trade accounts receivable, net	(8,760)	(53,964)	(55,025)
Inventories	46,831	(20,281)	(40,417)
Other current assets	3,583	(301)	(20,107)
Trade accounts payable	(27,881)	27,551	31,696
Taxes payable	7,482	5,374	6,613
Accruals and other	(49,871)	1,785	57,918
Net cash provided by operating activities	327,704	280,880	268,279
Cash flows from investing activities:
Proceeds from sale of property, plant and equipment	426	2,485	350
Purchase of property, plant and equipment	(95,588)	(98,500)	(73,943)
Acquisitions	(2,098)	(35,373)	(13,064)
Proceeds from divestiture	0	0	9,750
Other investing activities	0	(903)	(108)
Net cash used in investing activities	(97,260)	(132,291)	(77,015)
Cash flows from financing activities:
Proceeds from borrowings	477,998	469,599	714,575
Repayments of borrowings	(595,682)	(647,694)	(329,536)
Proceeds from exercise of stock options	21,927	20,770	20,455
Repurchases of common stock	(278,672)	(204,578)	(239,998)
Excess tax benefits from share-based payment arrangements	9,365	12,612	9,017
Acquisition Contingent Consideration Payment	(325)	(7,750)	0
Debt issuance costs	(363)	(3,144)	0
Other financing activities	(645)	(284)	(6,590)
Net cash provided by (used in) financing activities	(366,397)	(360,469)	167,923
Effect of exchange rate changes on cash and cash equivalents	2,054	(96)	3,359
Net increase (decrease) in cash and cash equivalents	(133,899)	(211,976)	362,546
Cash and cash equivalents:
Cash and Cash Equivalents, at Carrying Value, Beginning	235,601	447,577	85,031
Cash and Cash Equivalents, at Carrying Value, End	101,702	235,601	447,577
Supplemental disclosures of cash flow information:
Interest	19,252	17,804	15,019
Taxes	$ 78,009	$ 69,656	$ 60,101