Facility Exit Costs Narrative (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	Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]
Employee termination costs	$ 8.0	$ 3.6		$ 4.6
Accrued termination costs		1.4	$ 1.4	3.5	$ 0.0
Termination costs included in accrued employee compensation benefits				3.3
Termination costs included in other accrued expenses				0.2
Employee Severance
Restructuring Cost and Reserve [Line Items]
Employee termination costs		1.1	5.7	4.6
Accrued termination costs		1.0	1.0	3.5	0.0
Facility Closing
Restructuring Cost and Reserve [Line Items]
Employee termination costs		2.5		0.0
Exit costs		4.0	4.0
Restructuring and Related Cost, Incurred Cost		2.5
Accrued termination costs		$ 0.4	$ 0.4	$ 0.0	$ 0.0