Facility Exit Costs Employee Termination Costs (Details) - USD ($) $ in Millions	1 Months Ended	6 Months Ended	10 Months Ended	12 Months Ended
	Sep. 30, 2015	Jun. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Restructuring Reserve [Roll Forward]
Accrued termination costs, beginning		$ 3.5		$ 0.0
Charges	$ 8.0	3.6		4.6
Payments		(5.7)		(1.1)
Accrued termination costs, ending		1.4	$ 1.4	3.5
Employee Termination Costs
Restructuring Reserve [Roll Forward]
Accrued termination costs, beginning		3.5		0.0
Charges		1.1	5.7	4.6
Payments		(3.6)		(1.1)
Accrued termination costs, ending		1.0	1.0	3.5
Facility Costs
Restructuring Reserve [Roll Forward]
Accrued termination costs, beginning		0.0		0.0
Charges		2.5		0.0
Payments		(2.1)		0.0
Accrued termination costs, ending		$ 0.4	$ 0.4	$ 0.0