Segment Reporting (Details 1) (USD $) In Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Reconciliation of earnings before taxes to segment profit
Earnings before taxes	$ 87,058	$ 76,862	$ 231,673	$ 197,422
Amortization	4,795	3,667	12,742	10,613
Interest expense	5,893	4,792	17,296	14,757
Restructuring charges	362	566	2,831	2,476
Other charges (income), net	409	(127)	2,285	857
Segment Profit Information	$ 98,517	$ 85,760	$ 266,827	$ 226,125

Identification, description, and amounts of all significant reconciling items in the reconciliation of total profit or loss from reportable segments to the entity's consolidated income before income taxes, extraordinary items, and discontinued operations.

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The amount of amortization of deferred charges applied against earnings during the period.

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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.

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

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