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Asset Acquisitions, Dispositions and Other (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended 1 Months Ended 9 Months Ended 12 Months Ended
Jun. 30, 2013
Sep. 30, 2013
May 31, 2013
Brazilian chemical facility
Oct. 31, 2013
General Partner of Plains All American Pipeline,L.P
Sep. 30, 2013
BridgeTex
Dec. 31, 2012
BridgeTex
Acquisitions, dispositions and other transactions            
Sale of equity investment, net   $ 270 $ 270 $ 1,400    
Gain on sale of equity investment   131 131 1,000    
Charge for former executives and consultants 55          
Percentage of ownership interest         50.00% 50.00%
Money market funds         $ 123 $ 50