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NET CHANGE IN OPERATING ASSETS AND LIABILITIES (Tables)
 12 Months Ended
Dec. 31, 2014
NET CHANGE IN OPERATING ASSETS AND LIABILITIES DISCLOSURE [Abstract]  
Net change in operating assets and liabilities
Net cash provided by (used in) operating activities attributable to the net change in operating assets and liabilities is composed of the following (in millions):
Year Ended December 31,
2014

 
2013

 
2012

(Increase) decrease in trade accounts receivable
$
(253
)
 
$
28

 
$
(33
)
(Increase) decrease in inventories
35

 
(105
)
 
(286
)
(Increase) decrease in prepaid expenses and other assets
194

 
(163
)
 
(29
)
Increase (decrease) in accounts payable and accrued expenses
(250
)
 
(158
)
 
(556
)
Increase (decrease) in accrued taxes
151

 
22

 
770

Increase (decrease) in other liabilities
(316
)
 
(556
)
 
(946
)
Net change in operating assets and liabilities
$
(439
)
 
$
(932
)
 
$
(1,080
)