Restructuring and Other Expense - Schedule of Restructuring Reserve Activity (Details) - USD ($) $ in Millions	3 Months Ended				9 Months Ended
	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Restructuring Reserve [Roll Forward]
Charges	$ 0.4			$ 6.0	$ 0.4	$ 6.1
Restructuring Plan
Restructuring Reserve [Roll Forward]
Accrued balance, beginning balance	0.1	$ 0.4	$ 1.0		1.0
Charges	0.4	0.0	0.0
Usage and payments	0.0	(0.3)	(0.6)
Accrued balance, ending balance	0.5	0.1	0.4		0.5
Restructuring Plan | Severance and Related
Restructuring Reserve [Roll Forward]
Accrued balance, beginning balance	0.1	0.4	1.0		1.0
Charges	0.4
Usage and payments		(0.3)	(0.6)
Accrued balance, ending balance	0.5	0.1	0.4		0.5
Restructuring Plan | Lease Termination Costs
Restructuring Reserve [Roll Forward]
Accrued balance, beginning balance	0.0	0.0	0.0		0.0
Charges			0.0
Usage and payments			0.0
Accrued balance, ending balance	0.0	0.0	0.0		0.0
Restructuring Plan | Other
Restructuring Reserve [Roll Forward]
Accrued balance, beginning balance	0.0	0.0	0.0		0.0
Charges			0.0
Usage and payments			0.0
Accrued balance, ending balance	$ 0.0	$ 0.0	$ 0.0		$ 0.0