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COMMITMENTS AND CONTINGENT LIABILITIES (Purchase Commitments) (Table and Narrative) (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Ethylene related products [Member]
Dec. 31, 2012
Ethylene related products [Member]
Dec. 31, 2011
Ethylene related products [Member]
Dec. 31, 2013
Longest Agreement [Member]
Dec. 31, 2013
Materials Services and Other Items [Member]
Mar. 31, 2014
Materials Services and Other Items [Member]
Unrecorded Unconditional Purchase Obligation [Line Items]            
Purchases under purchase commitment agreements $ 405 $ 304 $ 552      
Long-term Purchase Commitment, Time Period P32Y     P64Y P7Y  
Fixed and determinable portion of obligations under purchase commitments, 2014 3,315          
Fixed and determinable portion of obligations under purchase commitments, 2015 2,958          
Fixed and determinable portion of obligations under purchase commitments, 2016 2,625          
Fixed and determinable portion of obligations under purchase commitments, 2017 2,215          
Fixed and determinable portion of obligations under purchase commitments, 2018 1,962          
Fixed and determinable portion of obligations under purchase commitments, 2019 and beyond 7,259          
Fixed and determinable portion of obligations under purchase commitments, total 20,334          
Other outstanding purchase commitments           $ 295