Exit and Realignment Costs - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Restructuring Cost and Reserve [Line Items]
Exit and realignment costs incurred	$ 3.8	$ 6.3	$ 13.8	$ 9.4
Expected cost remaining	3.5		3.5
Accelerated amortization
Restructuring Cost and Reserve [Line Items]
Exit and realignment costs incurred	0.3		4.5
Other facility costs and asset write-downs
Restructuring Cost and Reserve [Line Items]
Exit and realignment costs incurred	0.4	3.1	3.0	4.3
Staff and labor costs
Restructuring Cost and Reserve [Line Items]
Exit and realignment costs incurred	1.0	0.6	2.5	1.4
Professional fees
Restructuring Cost and Reserve [Line Items]
Exit and realignment costs incurred	0.5	1.2	0.5	1.3
Information systems related costs
Restructuring Cost and Reserve [Line Items]
Exit and realignment costs incurred	1.2	0.7	2.2	0.9
Other
Restructuring Cost and Reserve [Line Items]
Exit and realignment costs incurred	$ 0.4	$ 0.7	$ 1.1	$ 1.5