Employee Benefit Plans - Components of Net Periodic Costs (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Defined Benefit Plan Disclosure [Line Items]
Settlement charge			$ 0.9
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 0.5	$ 0.5	1.3	$ 1.3
Expected return on plan assets	(0.5)	(0.7)	(1.5)	(1.9)
Amortization of net actuarial loss	0.2	0.1	0.5	0.3
Settlement charge	0.9	0.0	0.9	0.0
Net periodic benefit cost (income)	$ 1.1	$ (0.1)	$ 1.2	$ (0.3)