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Schedule II - Valuation and Qualifying Accounts
12 Months Ended
Apr. 30, 2015
Valuation and Qualifying Accounts [Abstract]  
SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS
SCHEDULE II – VALUATION AND QUALIFYING ACCOUNTS
For the Years Ended April 30, 2013, 2014, and 2015
(Expressed in millions)
 
Col. A
Col. B
 
Col. C(1)
 
Col. C(2)
 
Col. D
 
Col. E
Description
Balance at
Beginning
of Period
 
Additions
Charged to
Costs and
Expenses
 
Additions
Charged to
Other
Accounts
 
Deductions
 
Balance
at End
of Period
2013
 
 
 
 
 
 
 
 
 
Allowance for Doubtful Accounts
$
9

 
2

 
$

 
2

(1) 
$
9

2014
 
 
 
 
 
 
 
 
 
Allowance for Doubtful Accounts
$
9

 
$

 
$

 

(1) 
$
9

2015
 
 
 
 
 
 
 
 
 
Allowance for Doubtful Accounts
$
9

 
2

 

 
$
1

(1) 
$
10

 
 
 

(1) 
Doubtful accounts written off, net of recoveries.