Income Tax Expenses (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Tax Disclosure [Abstract]
Earnings (loss) from continuing operations before income taxes	$ 60.9	$ 83.1	$ (239.2)	$ 132.9
Income tax expense (benefit)	$ 11.4	$ 19.4	$ (66.1)	$ 32.8
Effective tax rate	18.70%	23.30%	27.60%	24.60%