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Fair Value Measurements (Tables)
12 Months Ended
Mar. 31, 2017
Fair Value Measurements [Abstract]  
Schedule of U.S. pension plan assets fair value
 
Plan assets related to the Company’s pension plans were classified as follows:

  
March 31, 2017
 
  
Level 1
  
Level 2
  
Total
 
          
Money market investments
 
$
-
  
$
5.6
  
$
5.6
 
Common stocks
  
17.8
   
2.0
   
19.8
 
Corporate bonds
  
-
   
9.3
   
9.3
 
Pooled equity funds
  
56.8
   
-
   
56.8
 
Pooled fixed-income funds
  
26.5
   
-
   
26.5
 
U.S. government and agency securities
  
-
   
18.7
   
18.7
 
Other
  
1.4
   
1.4
   
2.8
 
Fair value excluding investment measured at net asset value
  
102.5
   
37.0
   
139.5
 
Investment measured at net asset value (a)
          
8.7
 
Total Fair Value
         
$
148.2
 
             
  
March 31, 2016
 
  
Level 1
  
Level 2
  
Total
 
             
Money market investments
 
$
-
  
$
5.8
  
$
5.8
 
Common stocks
  
23.7
   
1.3
   
25.0
 
Corporate bonds
  
-
   
8.4
   
8.4
 
Pooled equity funds
  
48.7
   
-
   
48.7
 
Pooled fixed-income funds
  
26.3
   
-
   
26.3
 
U.S. government and agency securities
  
-
   
18.4
   
18.4
 
Other
  
0.4
   
1.2
   
1.6
 
Fair value excluding investment measured at net asset value
  
99.1
   
35.1
   
134.2
 
Investment measured at net asset value (a)
          
7.3
 
Total Fair Value
         
$
141.5
 
 
(a)
As a practical expedient, the Company valued a collective trust fund using its net asset value per unit, and therefore, has not classified this investment within the fair value hierarchy.