v2.4.0.8
Segment Disclosures and Related Information - Assets (Details 2) (USD $)
In Millions, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Assets [Abstract]    
Consolidated total assets $ 116,947 $ 117,144
Alaska [Member]
   
Assets [Abstract]    
Consolidated total assets 11,380 10,950
Lower 48 and Latin America [Member]
   
Assets [Abstract]    
Consolidated total assets 29,012 28,895
Canada [Member]
   
Assets [Abstract]    
Consolidated total assets 21,938 22,308
Europe [Member]
   
Assets [Abstract]    
Consolidated total assets 14,966 15,562
Asia Pacific and Middle East [Member]
   
Assets [Abstract]    
Consolidated total assets 23,997 23,721
Other International [Member]
   
Assets [Abstract]    
Consolidated total assets 1,720 1,418
Corporate and Other [Member]
   
Assets [Abstract]    
Consolidated total assets 6,237 6,823
Discontinued operations [Member]
   
Assets [Abstract]    
Consolidated total assets $ 7,697 $ 7,467