CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Cash Flows From Operating Activities
Net income	$ 130,718	$ 127,595
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	34,497	30,191
Foreign currency transaction loss, net	1,151	2,589
Net loss on asset dispositions	1,021	1,140
Stock issued for employee benefit plans	486	697
Stock-based compensation expense	4,145	4,262
Excess tax benefits from stock-based compensation	(1,494)	(2,237)
Deferred income taxes	(2,192)	(939)
Changes in assets and liabilities:
Receivables	7,032	(61,498)
Inventories	(34,575)	(47,318)
Accounts payable and accrued liabilities	(21,520)	71,059
Other assets and liabilities, net	(4,492)	(11,037)
Net cash provided by operating activities	114,777	114,504
Cash Flows From Investing Activities
Capital expenditures	(28,345)	(20,980)
Disposals of property, plant and equipment	7,967	1,124
Net cash paid in business combinations		(2,325)
Net cash used in investing activities	(20,378)	(22,181)
Cash Flows From Financing Activities
Principal payments on short-term borrowings	(5,374)	(10,527)
Proceeds from short-term borrowings	3,241	5,886
Principal payments on long-term debt	(85,879)	(186,309)
Proceeds from long-term debt	185,019	82,575
Proceeds from stock option exercises	2,157	4,918
Excess tax benefits from stock-based compensation	1,494	2,237
Purchase of treasury stock	(114,913)	(6,169)
Cash dividends paid	(5,075)	(5,237)
Acquisition of noncontrolling interests		(18,806)
Other	(1,088)	(1,024)
Net cash used in financing activities	(20,418)	(132,456)
Effect of exchange rate changes on cash and cash equivalents	(4,147)	4,451
Net increase (decrease) in cash and cash equivalents	69,834	(35,682)
Cash and cash equivalents, beginning of year	155,259	157,029
Cash and cash equivalents, end of period	$ 225,093	$ 121,347