Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Income tax (benefit) expense	$ (2.0)	$ 1.6
Effective income tax rate (percent)	200.00%	25.40%
Liability for gross unrecognized tax benefits	$ 2.4		$ 2.3
Unrecognized tax benefit that would impact effective tax rate	$ 1.8		$ 0.1

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of unrecognized tax benefits.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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