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Income Taxes (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Income tax expense (benefit)	$ 1.7	$ (0.2)	$ 3.9	$ 1.9
Effective income tax rate, continuing operations	25.90%	(0.50%)	6.60%	2.20%
Net Tax Expense from Amendment of State Tax Returns due to Settlement of Federal Income Tax Audits			1.3
Net Tax Benefit from Audit Settlements and Reversal of State DTL's				$ 2.8

- Definition

A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

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- Definition

The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.

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