Segment Results (Schedule Of Financial Information By Business Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Segment Reporting Information [Line Items]
Revenues	$ 614,682	$ 493,449	$ 1,757,228	$ 1,365,132
Operating income	106,580	67,999	292,575	172,050
Interest expense	2,898	5,651	12,179	17,829
Other income, net	(138)	(1,110)	(821)	(1,747)
Income (loss) before income taxes	103,820	63,458	281,217	155,968
Industrial Products Group [Member]
Segment Reporting Information [Line Items]
Revenues	320,171	280,633	934,227	795,677
Operating income	38,607	26,476	103,734	66,186
Operating income as a percentage of revenues	12.10%	9.40%	11.10%	8.30%
Engineered Products Group [Member]
Segment Reporting Information [Line Items]
Revenues	294,511	212,816	823,001	569,455
Operating income	$ 67,973	$ 41,523	$ 188,841	$ 105,864
Operating income as a percentage of revenues	23.10%	19.50%	22.90%	18.60%

Operating income (loss) as a percentage of revenues.

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Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Publisher FASB

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- Definition

The cost of borrowed funds accounted for as interest that was charged against earnings during the period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-LegacyDoc This is a non-GAAP reference that was included in the 2009 taxonomy. It will be removed from future versions of this taxonomy.

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The net result for the period of deducting operating expenses from operating revenues.

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The net amount of other income and expense amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating income (expense) recognized for the period. Such amounts may include: (a) dividends, (b) interest on securities, (c) net gains or losses on securities, (d) unusual costs, (e) gains or losses on foreign exchange transactions, and (f) miscellaneous other income and expense items.

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Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Name Regulation S-X (SX)

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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