Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2014	Sep. 30, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Effective tax rate decrease due to statute of limitations expiration	$ 1.6
Effective tax rate decrease due to other adjustments	$ 1.0
Unrecognized tax benefit that, if recognized, would favorably affect the effective tax rate		$ 2.1	$ 2.8