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Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010	Jan. 05, 2011
Income Taxes
Effective tax rates (as a percent)	27.60%			11.40%
U.S. statutory rate (as a percent)	35.00%	35.00%	35.00%	35.00%
Pre-tax (loss)	$ 34.4	$ 4.0	$ (0.2)	$ (20.2)
Deferred tax assets held for sale	74.4		74.4
U.S. deferred tax asset, net	322.5		322.5
Estimated total assessment					$ 18.7

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 domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

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