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SCHEDULE II - Valuation and qualifying accounts
 12 Months Ended
May 31, 2014
Valuation and Qualifying Accounts [Abstract]  
SCHEDULE II - Valuation and qualifying accounts
SCHEDULE II — Valuation and Qualifying Accounts
(In millions)
 
Balance at
Beginning of Period
 
Charged to Costs
and Expenses
 
Charged to
Other Accounts
 
Write-Offs, Net
 
Balance at End
of Period
Sales returns reserve
 
 
 
 
 
 
 
 
 

For the year ended May 31, 2012
 
$
151

 
$
401

 
$
(3
)
 
$
(376
)
 
$
173

For the year ended May 31, 2013
 
173

 
538

 
1

 
(471
)
 
241

For the year ended May 31, 2014
 
241

 
619

 
(3
)
 
(549
)
 
308

Allowance for doubtful accounts(1)
 
 
 
 
 
 
 
 
 
 
For the year ended May 31, 2012
 
$
120

 
$
21

 
$
(9
)
 
$
(41
)
 
$
91

For the year ended May 31, 2013
 
91

 
31

 
1

 
(19
)
 
104

For the year ended May 31, 2014
 
104

 
13

 
(2
)
 
(37
)
 
78

(1)
Includes both current and non-current portions of the allowance for doubtful accounts. The non-current portion is classified in Deferred income taxes and other assets on the Consolidated Balance Sheets.