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Basis of Presentation and Summary of Significant Accounting Policies (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2012
Basis of Pres & SAPs [Abstract]
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax	$ 0.8
Discontinued Operation, Tax Effect of Income (Loss) from Disposal of Discontinued Operation	$ 0.6

Amount of gain (loss), after tax expense or benefit and not previously recognized, resulting from the sale of a business component.

Amount of tax expense or benefit on gain (loss), not previously recognized, resulting from the sale of a business component.