Goodwill and Intangible Assets (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Mar. 31, 2016
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 15.8
Effect of exchange rate changes	(0.9)
Goodwill, ending balance	14.9
Amortized intangible assets [Abstract]
Gross carrying value	15.8		$ 16.4
Accumulated amortization	(8.3)		(8.2)
Net intangible assets	7.5		8.2
Amortization expense	0.4	$ 0.4
Estimated future amortization expense [Abstract]
Remainder of 2017	1.2
2018	1.5
2019	1.4
2020	1.3
2021	0.7
2022 & Beyond	1.4
Asia [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	0.5
Effect of exchange rate changes	0.0
Goodwill, ending balance	0.5
Building HVAC [Member]
Goodwill [Roll Forward]
Goodwill, beginning balance	15.3
Effect of exchange rate changes	(0.9)
Goodwill, ending balance	14.4
Trade Names [Member]
Amortized intangible assets [Abstract]
Gross carrying value	8.5		8.9
Accumulated amortization	(6.1)		(6.3)
Net intangible assets	2.4		2.6
Acquired Technology [Member]
Amortized intangible assets [Abstract]
Gross carrying value	5.4		5.5
Accumulated amortization	(1.7)		(1.5)
Net intangible assets	3.7		4.0
Customer Relationships [Member]
Amortized intangible assets [Abstract]
Gross carrying value	1.9		2.0
Accumulated amortization	(0.5)		(0.4)
Net intangible assets	$ 1.4		$ 1.6