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Accrued Severance (Tables)
 9 Months Ended
Feb. 28, 2014
Disclosure For Accrued Severance [Abstract]  
Schedule Of Accrued Severance Costs
The table below provides information regarding Accrued severance, which is included in “Other accrued expenses” in the Company’s condensed consolidated balance sheets. 
 
Nine months ended February 28, 2014
 
Twelve months ended May 31, 2013
 
Nine months ended February 28, 2013
Beginning balance
$
3.3

 
$
2.7

 
$
2.7

Accruals
9.7

 
13.4

 
5.3

Payments
(11.9
)
 
(12.8
)
 
(5.5
)
Ending balance
$
1.1

 
$
3.3

 
$
2.5