Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Goodwill [Roll Forward]
Beginning balance	$ 15.8	$ 16.2
Acquired Goodwill	150.6
Effect of exchange rate changes	(1.3)	(0.4)
Ending balance	165.1	15.8
Asia [Member]
Goodwill [Roll Forward]
Beginning balance	0.5	0.5
Acquired Goodwill	0.0
Effect of exchange rate changes	0.0	0.0
Ending balance	0.5	0.5
BHVAC [Member]
Goodwill [Roll Forward]
Beginning balance	15.3	15.7
Acquired Goodwill	0.0
Effect of exchange rate changes	(1.6)	(0.4)
Ending balance	13.7	15.3
CIS [Member]
Goodwill [Roll Forward]
Beginning balance	0.0	0.0
Acquired Goodwill	150.6
Effect of exchange rate changes	0.3	0.0
Ending balance	150.9	0.0
Americas and Europe [Member]
Goodwill [Roll Forward]
Accumulated impairment losses	$ 31.6	$ 8.7