Income Taxes - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Operating Loss Carryforwards [Line Items]
Effective income tax rate	31.70%	9.10%	27.70%	1.80%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			35.00%
Tax credit carryforward					$ 21.8
Liability for uncertain tax positions from continuing operations	$ 0.9		$ 0.9		1.3
Liability for uncertain tax positions from discontinued operations	1.1		1.1		1.1
Liability for uncertain tax positions	2.0		2.0		2.4
Unrecognized tax positions to be settled in the next 12 months	$ 0.5		$ 0.5
Foreign Tax Authority
Operating Loss Carryforwards [Line Items]
Tax credit carryforward expiration period			10 years
Tax credit carryforward					$ 12.7