Income Tax Expenses (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Tax Disclosure [Abstract]
Earnings from continuing operations before income taxes	$ 63.6	$ 37.2	$ 109.8	$ 92.6
Income tax expense	$ 7.7	$ 17.5	$ 44.4	$ 52.1
Effective tax rate	12.10%	47.00%	40.40%	56.30%