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Restructuring Activities (Narrative) (Details) (USD $) In Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Dec. 31, 2011	Jun. 30, 2011	Jun. 30, 2010
Restructuring Activities
Restructuring charges	$ 1.2	$ 0.6		$ 1.7	$ 1.4
Expected additional restructuring cost			0.4
Remaining liability for amounts expensed but not yet paid	$ 0.2			$ 0.2

Amount expected to be charged against earnings in the current and future periods for the specified restructuring cost.

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- Definition

Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

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