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Receivables
 12 Months Ended
Dec. 31, 2011
Receivables [Abstract]  
RECEIVABLES
5.
RECEIVABLES
Receivables consisted of the following (in millions):
 
December 31,
 
2011
 
2010
Accounts receivable
$
8,366

 
$
4,299

Commodity derivative receivables
174

 
144

Notes receivable and other
214

 
182

 
8,754

 
4,625

Allowance for doubtful accounts
(48
)
 
(42
)
Receivables, net
$
8,706

 
$
4,583


Notes receivable primarily represent amounts due from PBF Holding related to the sale of the Paulsboro Refinery, the full payment of which was received in February 2012.
Changes in the allowance for doubtful accounts consisted of the following (in millions):
 
Year Ended December 31,
 
2011
 
2010
 
2009
Balance as of beginning of year
$
42

 
$
45

 
$
58

Increase in allowance charged to expense
21

 
14

 
28

Accounts charged against the allowance,
  net of recoveries
(14
)
 
(17
)
 
(42
)
Foreign currency translation
(1
)
 
—

 
1

Balance as of end of year
$
48

 
$
42

 
$
45