Restructuring and Repositioning Expenses - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016	Feb. 03, 2016
Changes in Business Environment and Structure
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	$ 1.1	$ 0.9
Restructuring liabilities	1.6		$ 1.1
Total cash payments for repositioning costs	0.3
Changes in Business Environment and Structure | Employee severance
Restructuring Cost and Reserve [Line Items]
Restructuring liabilities	1.6		$ 1.1
Changes in Business Environment and Structure | SCC
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	0.8	0.5
Changes in Business Environment and Structure | SBM
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	0.3	0.4
Repositioning
Restructuring Cost and Reserve [Line Items]
Restructuring expenses	2.0	$ 4.3
Repositioning | Minimum
Restructuring Cost and Reserve [Line Items]
Estimated transition expenses				$ 18.0
Repositioning | Maximum
Restructuring Cost and Reserve [Line Items]
Estimated transition expenses				$ 20.0
Repositioning | Repositioning expenses
Restructuring Cost and Reserve [Line Items]
Total cash payments for repositioning costs	1.1
Repositioning | Capital expenditures
Restructuring Cost and Reserve [Line Items]
Total cash payments for repositioning costs	$ 0.8