Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Effective tax rate (percent)	14.20%	15.40%
Unrecognized tax benefits	$ 9.2
Unrecognized tax benefits that would decrease the effective tax rate if recognized	8.9
Unrecognized tax benefits that could be recognized within 12 months	1.4
Unrecognized tax benefits, penalties accrued	$ 0.6

Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit.

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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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Amount of unrecognized tax benefits.

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Amount of statutory penalties accrued for a tax position claimed or expected to be claimed by the entity, in its tax return.

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

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