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Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Income Taxes
Deferred Income Tax Liabilities, Net, Total	$ 107.3		$ 107.9
Percent of pretax income
Actual effective income tax rate (as a percent)	24.60%	84.80%
Correction of the failed spin-off-leaseback accounting treatment
Income Taxes
Period of cumulative pre-tax loss position	3 years

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Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences, netted by jurisdiction.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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