Restructuring Restructuring (Details) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve		$ 0.2
2016 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Severance Costs	$ 1.5
Employees affected	440
Restructuring Reserve	$ 1.2
2015 Restructuring Plan [Member]
Restructuring Cost and Reserve [Line Items]
Severance Costs		$ 7.2
Employees affected		700
Restructuring Reserve	$ 2.7	$ 4.1
Other Restructuring Costs		$ 0.4