Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Jan. 05, 2011
Income Taxes
Effective tax rates (as a percent)		15.60%		17.90%
U.S. statutory rate (as a percent)	35.00%	35.00%		35.00%
Pre-tax (loss)	$ 1.2	$ 75.2	$ 3.6	$ 57.5
Deferred tax assets held for sale	88.2		88.2
U.S. deferred tax asset, net	362.6		362.6
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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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

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Represents deferred tax assets recorded as held for sale.

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Represents the amount of estimated total assessment including interest and utilization of alternative minimum and foreign tax credit carryovers.

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The aggregate U.S tax effects as of the balance sheet date of all future tax deductions arising from temporary differences between tax basis and generally accepted accounting principles basis recognition of assets, liabilities, revenues and expenses, which can only be deducted for tax purposes when permitted under enacted tax laws; net of deducting the allocated valuation allowance, if any, to reduce such amount to net realizable value.

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