Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Tax Disclosure [Abstract]
Effective tax rate (percent)	43.50%	28.60%	35.10%	30.00%
Change in income tax expense due to redemption of corporate owned life insurance policies	$ 1.9
Statutory rate (percent)	35.00%	35.00%
Unrecognized tax benefits, interest and penalties accrued	$ 1.3		$ 1.3
Unrecognized tax benefits	12.7		12.7
Unrecognized tax benefits that would decrease the effective tax rate if recognized	12.6		12.6
Unrecognized tax benefits that could be recognized within 12 months	$ 3.9		$ 3.9