Acquisitions And Other Investments (Schedule Of Business Acquisition Increase Decrease In Goodwill) (Details) (Precision [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2010
Precision [Member]
Increase in estimated fair value of contingent consideration	$ 13.9
Reduction in the estimated fair value of accounts receivable and billings in excess of costs and earnings	2.5
Increase in liabilities, excluding billings in excess of costs and earnings	3.0
Assignment of joint venture to sellers	1.5
Purchase price adjustment	(5.4)
Net increase in goodwill	$ 15.5

This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to items of consideration transferred in connection with a business combination for which the initial accounting was incomplete.

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This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to equity interests acquired in connection with a business combination for which the initial accounting was incomplete.

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- Definition

This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to financial assets acquired in connection with a business combination for which the initial accounting was incomplete.

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- Definition

This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to financial liabilities assumed in connection with a business combination for which the initial accounting was incomplete.

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