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Income Taxes (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Income tax expense (benefit)	$ (2.4)	$ 2.2
Effective income tax rate, continuing operations	(48.10%)	4.30%
Unrecognized tax benefits, reductions resulting from lapse of applicable statute of limitations	1.5	1.1
Income tax expense (benefit), other	$ (3.3)	$ (0.7)

- 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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