Restructuring Activities (Details) $ in Millions	3 Months Ended				12 Months Ended
	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Mar. 31, 2019 USD ($)	Mar. 31, 2018 USD ($)	Mar. 31, 2017 USD ($) Facility
Restructuring and repositioning expenses [Abstract]
Employee severance and related benefits					$ 8.7	$ 13.0	$ 5.3
Other restructuring and repositioning expenses					0.9	3.0	5.6
Total					9.6	16.0	10.9
Changes in accrued severance [Roll Forward]
Beginning balance					11.0	6.5
Additions					8.7	13.0
Payments					(9.1)	(9.4)
Effect of exchange rate changes					(0.6)	0.9
Ending balance			$ 11.0		10.0	11.0	6.5
Other [Abstract]
Asset impairment charges	$ 0.4		$ 1.2	$ 1.3	0.4	2.5	0.0
Proceeds from dispositions of assets					0.3	0.3	5.7
Gain on sale of assets		$ (1.7)			(1.7)	0.0	$ 2.0
Commercial and Industrial Solutions ("CIS") [Member]
Other [Abstract]
Restructuring expense						8.3
Asset impairment charges					$ 0.4	$ 1.3
VTS [Member]
Other [Abstract]
Number of closed manufacturing facilities sold | Facility							3
Proceeds from dispositions of assets							$ 5.4
Gain on sale of assets							$ 2.0