Goodwill and Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Mar. 31, 2014
Goodwill [Roll Forward]
Goodwill, Beginning Balance	$ 28.7
Effect of exchange rate changes	0.7
Ending balance	29.4
Amortized intangible assets [Abstract]
Gross Carrying Value	18.6		18.3
Accumulated Amortization	(6.4)		(5.9)
Net Intangible Assets	12.2		12.4
Amortization Expense	0.4	0.2
Amortization expense, fiscal year maturity [Abstract]
Remainder of 2015	1.2
2016	1.7
2017	1.8
2018	1.8
2019	1.6
2020 & Beyond	4.1
Tradenames [Member]
Amortized intangible assets [Abstract]
Gross Carrying Value	10.3		10.1
Accumulated Amortization	(5.9)		(5.7)
Net Intangible Assets	4.4		4.4
Acquired technology [Member]
Amortized intangible assets [Abstract]
Gross Carrying Value	5.9		5.8
Accumulated Amortization	(0.4)		(0.2)
Net Intangible Assets	5.5		5.6
Customer relationships [Member]
Amortized intangible assets [Abstract]
Gross Carrying Value	2.4		2.4
Accumulated Amortization	(0.1)		0
Net Intangible Assets	2.3		2.4
South America [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	10.9
Effect of exchange rate changes	0.3
Ending balance	11.2
Asia [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	0.5
Effect of exchange rate changes	0
Ending balance	0.5
Building HVAC [Member]
Goodwill [Roll Forward]
Goodwill, Beginning Balance	17.3
Effect of exchange rate changes	0.4
Ending balance	$ 17.7