XML 53 R41.htm IDEA: XBRL DOCUMENT v2.4.0.8
Variable Interest Entity (Details) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Sep. 30, 2013
Dec. 31, 2012
Variable interest entities        
Cash and cash equivalents $ 2,897 $ 3,393 $ 3,771 $ 1,592
PP&E 58,465 55,821    
Non-controlling amounts 606 246    
BridgeTex
       
Variable interest entities        
Minority ownership interest (as a percent) 50.00%      
Cash and cash equivalents 66 82    
PP&E 1,000 420    
Non-controlling amounts $ 606 $ 246