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Goodwill and Intangible Assets (Tables)
 9 Months Ended
Dec. 31, 2014
Goodwill and Intangible Assets [Abstract]  
Changes in the carrying amount of goodwill
Changes in the carrying amount of goodwill were as follows:

  
South
America
  
Asia
  
Building
HVAC
  
Total
 
Goodwill, March 31, 2014
 
$
10.9
  
$
0.5
  
$
17.3
  
$
28.7
 
Effect of exchange rate changes
  
(1.6
)
  
-
   
(0.9
)
  
(2.5
)
Goodwill, December 31, 2014
 
$
9.3
  
$
0.5
  
$
16.4
  
$
26.2
 
Intangible assets
Intangible assets consisted of the following:

  
December 31, 2014
  
March 31, 2014
 
  
Gross
Carrying
Value
  
Accumulated
Amortization
  
Net
Intangible
Assets
  
Gross
Carrying
Value
  
Accumulated
Amortization
  
Net
Intangible
Assets
 
Tradenames
 
$
9.5
  
$
(5.8
)
 
$
3.7
  
$
10.1
  
$
(5.7
)
 
$
4.4
 
Acquired technology
  
5.7
   
(0.7
)
  
5.0
   
5.8
   
(0.2
)
  
5.6
 
Customer relationships
  
2.2
   
(0.2
)
  
2.0
   
2.4
   
-
   
2.4
 
Total intangible assets
 
$
17.4
  
$
(6.7
)
 
$
10.7
  
$
18.3
  
$
(5.9
)
 
$
12.4
 
Total estimated annual amortization expense
Estimated future amortization expense is as follows:

Fiscal Year
 
Estimated
Amortization
Expense
 
Remainder of 2015
 
$
0.4
 
2016
  
1.6
 
2017
  
1.7
 
2018
  
1.7
 
2019
  
1.5
 
2020 & Beyond
  
3.8