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Segment Information (Tables)
12 Months Ended
Dec. 31, 2011
Segment Information [Abstract]  
Segment information
 
   
Consolidated
  
United
 States
  
West
 Africa
  
Eastern
Mediterranean
  
North
Sea
  
Other Int'l,
Corporate
 
(millions)
                  
Year Ended December 31, 2011
                  
Revenues from Third Parties
 $3,568  $2,125  $592  $307  $357  $187 
Income from Equity Method Investees
  195   2   193   -   -   - 
Total Revenues (1)
  3,763   2,127   785   307   357   187 
DD&A
  965   758   69   25   87   26 
Gain on Divestiture
  (25)  -   -   -   -   (25)
Asset Impairments
  759   757   -   -   2   - 
(Gain) Loss on Commodity Derivative Instruments
  (42)  (74)  32   -   -   - 
Income (Loss) Before Income Taxes
  715   96   561   228   213   (383)
Equity Method Investments
  329   72   257   -   -   - 
Additions to Long-Lived Assets
  4,358   3,007   618   687   -   46 
Goodwill at End of Year
  696   696   -   -   -   - 
Total Assets at End of Year (2)
  16,444   11,201   2,728   1,751   544   220 
Year Ended December 31, 2010
                        
Revenues from Third Parties
 $2,924  $1,893  $349  $191  $309  $182 
Reclassification from AOCL (3)
  (20)  (20)  -   -   -   - 
Income from Equity Method Investees
  118   -   118   -   -   - 
Total Revenues (1)
  3,022   1,873   467   191   309   182 
DD&A
  883   719   39   22   64   39 
Net Gain on Asset Sales
  (113)  (113)  -   -   -   - 
Asset Impairments
  144   119   -   25   -   - 
(Gain) Loss on Commodity Derivative Instruments
  (157)  (168)  11   -   -   - 
Income (Loss) Before Income Taxes
  1,031   713   355   119   183   (339)
Equity Method Investments
  285   -   285   -   -   - 
Additions to Long-Lived Assets
  2,789   1,796   612   270   64   47 
Goodwill at End of Year
  696   696   -   -   -   - 
Total Assets at End of Year (2)
  13,282   9,091   2,270   919   770   232 
Year Ended December 31, 2009
                        
Revenues from Third Parties
 $2,287  $1,484  $340  $144  $153  $166 
Reclassification from AOCL (3)
  (58)  (29)  (29)  -   -   - 
Income from Equity Method Investees
  84   -   84   -   -   - 
Total Revenues (1)
  2,313   1,455   395   144   153   166 
DD&A
  816   689   38   20   34   35 
Asset Impairments
  604   504   -   -   -   100 
Gain on Commodity Derivative Instruments
  110   73   37   -   -   - 
Income (Loss) Before Income Taxes
  (264)  (287)  257   98   62   (394)
Equity Method Investments
  303   -   303   -   -   - 
Additions to Long-Lived Assets
  1,282   911   124   103   103   41 
Goodwill at End of Year
  758   758   -   -   -   - 
Total Assets at End of Year (2)
  11,807   8,669   1,731   486   635   286 
 
 (1)
Revenues from third parties for all foreign countries, in total, were $1.6 billion in 2011, $1.0 billion in 2010, and $791 million in 2009.
 
(2)
Long-lived assets located in all foreign countries, in total, were $3.5 billion, $2.4 billion, and $1.6 billion at December 31, 2011, 2010, and 2009, respectively.
 
(3)
Revenues through December 31, 2010 include decreases resulting from hedging activities. The decreases resulted from hedge gains and losses that were deferred in AOCL, as a result of previous cash flow hedge accounting, and subsequently reclassified to revenues. All hedge gains and losses had been reclassified to revenues by December 31, 2010.