Income Taxes - Narrative (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Undistributed foreign earnings		$ 259.0
Gross amount of the net operating loss carryforwards		214.5
Potential Benefits that Would Impact Effective Tax Rate from Continuing Operations		9.7
Interest and penalties included in income tax expense		(1.1)	(2.1)	1.2
Accrued penalties and interest		2.1	3.7
Currently remaining unrecognized tax positions that may be recognized by the end of following year	$ 1.7