Income Tax Expenses (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Earnings from continuing operations before income taxes	$ 49.8	$ 49.4
Income tax expense	$ 13.4	$ 8.2
Effective tax rate	26.80%	16.60%

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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