Segment Information (Tables)
3 Months Ended9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2011
Sep. 30, 2010
Segments, Geographical Areas [Abstract]    
Geographic operating segment information
                  
Three Months Ended September 30, 2011:               
    Domestic Malaysia China Other International Total
             
    (In millions)
Oil and gas revenues $ 444 $ 159 $ 25 $ — $ 628
                  
Operating expenses:               
 Lease operating   93   21   1   —   115
 Production and other taxes   19   71   5   —   95
 Depreciation, depletion and amortization   154   29   6   —   189
 General and administrative   49   1   1   —   51
 Allocated income taxes   48   14   3   —   
  Net income from oil and                
   gas properties $ 81 $ 23 $ 9 $ —   
                  
  Total operating expenses               450
Income from operations               178
 Interest expense, net of interest income,               
  capitalized interest and other               (16)
 Commodity derivative income               262
Income before income taxes             $ 424
                  
Total assets $ 7,879 $ 789 $ 235 $ — $ 8,903
                  
Additions to long-lived assets $ 597 $ 81 $ 13 $ — $ 691
                  
                  
                  
Three Months Ended September 30, 2010:               
             Other International   
    Domestic Malaysia China   Total
    (In millions)
Oil and gas revenues $ 357 $ 80 $ 12 $ — $ 449
                  
Operating expenses:               
 Lease operating   68   17   1   —   86
 Production and other taxes   2   17   2   —   21
 Depreciation, depletion and amortization   128   24   4   —   156
 General and administrative   39   1   —   —   40
 Allocated income taxes   44   8   2   —   
  Net income from oil and                
   gas properties $ 76 $ 13 $ 3 $ —   
                  
  Total operating expenses               303
Income from operations               146
 Interest expense, net of interest income,               
  capitalized interest and other               (23)
 Commodity derivative income               131
Income before income taxes             $ 254
                  
Total assets $ 6,420 $ 604 $ 202 $ — $ 7,226
                  
Additions to long-lived assets $ 364 $ 18 $ 8 $ — $ 390
                  
                  
                  
Nine Months Ended September 30, 2011:         
             Other International   
    Domestic Malaysia China   Total
                  
    (In millions)
Oil and gas revenues $ 1,313 $ 416 $ 65 $ — $ 1,794
                  
Operating expenses:               
 Lease operating   260   69   4   —   333
 Production and other taxes   56   173   16   —   245
 Depreciation, depletion and amortization   440   73   15   —   528
 General and administrative   128   3   1   —   132
 Allocated income taxes   159   37   7   —   
  Net income from oil and                
   gas properties $ 270 $ 61 $ 22 $ —   
                  
  Total operating expenses               1,238
Income from operations               556
 Interest expense, net of interest income,               
  capitalized interest and other               (61)
 Commodity derivative income               249
Income before income taxes             $ 744
                  
Total assets $ 7,879 $ 789 $ 235 $ — $ 8,903
                  
Additions to long-lived assets $ 1,858 $ 208 $ 48 $ — $ 2,114
                  
                  
                  
Nine Months Ended September 30, 2010:         
             Other International   
    Domestic Malaysia China   Total
    (In millions)
Oil and gas revenues $ 1,055 $ 259 $ 41 $ — $ 1,355
                  
Operating expenses:               
 Lease operating   195   39   3   —   237
 Production and other taxes   33   38   6   —   77
 Depreciation, depletion and amortization   371   78   11   3   463
 General and administrative   113   3   1   —   117
 Other   10   —   —   —   10
 Allocated income taxes   124   39   6   (1)   
  Net income (loss) from oil and                
   gas properties $ 209 $ 62 $ 14 $ (2)   
                  
  Total operating expenses               904
Income from operations               451
 Interest expense, net of interest income,               
  capitalized interest and other               (71)
 Commodity derivative income               414
Income before income taxes             $ 794
                  
Total assets $ 6,420 $ 604 $ 202 $ — $ 7,226
                  
Additions to long-lived assets $ 1,280 $ 99 $ 33 $ — $ 1,412