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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
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate			35.00%
Continuing operations tax benefit	$ (8.4)	$ 12.7	$ (15.2)	$ 2.4
Discontinued operations tax benefit	(1.6)	(0.8)	(1.6)	(0.9)
Total tax benefit	$ (10.0)	$ 11.9	$ (16.8)	$ 1.5
Continuing operations effective tax rate	20.00%	35.00%	21.00%	69.00%
Discontinued operation effective tax rate	39.00%	39.00%	39.00%	39.00%
Total effective tax rate	22.00%	35.00%	22.00%	115.00%

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Tax effect allocated to a disposal group that is classified as a component of the entity reported as a separate component of income before extraordinary items. Includes the tax effects of the following: income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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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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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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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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