Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Taxes [Abstract]
Income before income taxes	$ 53.2	$ 77.5	$ 112.4	$ 143.4
Provision for income taxes	$ 8.3	$ 17.2	$ 20.3	$ 40.7
Effective income tax provision rate	15.60%	22.20%	18.10%	28.40%

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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