Restructuring Activities (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2017	Dec. 31, 2016
Restructuring and repositioning expenses [Abstract]
Employee severance and related benefits	$ 8.6	$ 0.1		$ 9.2	$ 2.2
Other restructuring and repositioning expenses	0.8	1.5		2.3	3.8
Total	9.4	1.6		11.5	6.0
Changes in accrued severance [Roll Forward]
Beginning balance	3.0	9.2		6.5	14.7
Additions	8.6	0.1		9.2	2.2
Payments	(0.6)	(1.3)		(5.1)	(8.5)
Effect of exchange rate changes	0.2	(0.5)		0.6	(0.9)
Ending balance	11.2	7.5	$ 9.2	11.2	7.5
Restructuring Cost and Reserve [Line Items]
Asset impairment charges	1.3	0.0		1.3	0.0
Cash proceeds from sale of facilities				0.1	4.3
Gain on sale of assets	0.0	$ 0.0		$ 0.0	$ 1.2
Commercial and Industrial Solutions ("CIS") [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense	8.2
Asset impairment charges	$ 1.3
Europe Segment [Member]
Restructuring Cost and Reserve [Line Items]
Cash proceeds from sale of facilities			4.3
Gain on sale of assets			$ 1.2