Income Tax Expenses (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Tax Disclosure [Abstract]
Earnings from continuing operations before income taxes	$ 55.4	$ 4.9
Income tax expense	$ 24.6	$ 12.0
Effective tax rate	44.40%	244.90%