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Impairment and Restructuring Charges (Tables)
12 Months Ended
Mar. 31, 2013
Impairment and Restructuring Charges [Abstract]  
Changes in accrued severance
The Company accrues severance in accordance with its written plans, procedures and relevant statutory requirements. Changes in accrued severance were as follows:

Year ended March 31
 
2013
 
     
Beginning balance
 $- 
Additions
  14.9 
Payments
  (3.3)
Balance, March 31, 2013
 $11.6