Other Expenses - Schedule of Other Costs (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Other Income and Expenses [Abstract]
Severance and employee benefits	$ (0.1)	$ 1.0	$ (1.5)	$ 1.0
Facility-exit charges	(0.1)	0.2	(0.1)	0.2
Strategic initiatives	7.7	10.3	11.1	11.9
Transitioned employees restructuring expense	0.6	1.7	4.8	2.5
Digital Transformation Office	1.9	0.0	4.4	0.0
Other	0.7	0.0	0.8	0.0
Total other expenses	10.7	$ 13.2	19.5	$ 15.6
Reorganization liability	2.5		2.5
Receivables	$ 0.8		$ 0.8