v2.4.0.8
Segment Reporting - Table (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Dec. 31, 2013
Segment Reporting Information [Line Items]          
Revenues $ 5,152 $ 4,675 $ 10,198 $ 8,098  
Income (Loss) Before Income Taxes 371 1,009 1,117 1,174  
Total Assets 41,127   41,127   41,782
Exploration and Production [Member]
         
Segment Reporting Information [Line Items]          
Revenues 1,704 2,406 3,471 3,858  
Marketing, Gathering And Compression [Member]
         
Segment Reporting Information [Line Items]          
Revenues 3,167 2,057 6,181 3,838  
Oilfield Services [Member]
         
Segment Reporting Information [Line Items]          
Revenues 278 205 516 392  
Other Segments [Member]
         
Segment Reporting Information [Line Items]          
Revenues 3 7 30 10  
Reportable Subsegments [Member]
         
Segment Reporting Information [Line Items]          
Revenues 5,152 4,675 10,198 8,098  
Income (Loss) Before Income Taxes 371 1,009 1,117 1,174  
Total Assets 41,127   41,127   41,782
Intersubsegment Eliminations [Member]
         
Segment Reporting Information [Line Items]          
Revenues 0 0 0 0  
Operating Segments [Member] | Reportable Subsegments [Member] | Exploration and Production [Member]
         
Segment Reporting Information [Line Items]          
Revenues 1,704 2,406 3,471 3,858  
Income (Loss) Before Income Taxes 410 1,162 1,098 625  
Total Assets 35,527   35,527   35,341
Operating Segments [Member] | Reportable Subsegments [Member] | Marketing, Gathering And Compression [Member]
         
Segment Reporting Information [Line Items]          
Revenues 5,355 3,990 10,777 7,516  
Income (Loss) Before Income Taxes 109 158 213 272  
Total Assets 2,334   2,334   2,430
Operating Segments [Member] | Reportable Subsegments [Member] | Oilfield Services [Member]
         
Segment Reporting Information [Line Items]          
Revenues 552 582 1,060 1,127  
Income (Loss) Before Income Taxes 19 4 (16) 26  
Total Assets 50   50   2,018
Operating Segments [Member] | Reportable Subsegments [Member] | Other Segments [Member]
         
Segment Reporting Information [Line Items]          
Revenues 3 14 30 23  
Income (Loss) Before Income Taxes (20) (213) 39 451  
Total Assets 5,283   5,283   5,750
Intersegment Eliminations [Member]
         
Segment Reporting Information [Line Items]          
Revenues 0 0 0 0  
Intersegment Eliminations [Member] | Exploration and Production [Member]
         
Segment Reporting Information [Line Items]          
Revenues 0 0 0 0  
Intersegment Eliminations [Member] | Marketing, Gathering And Compression [Member]
         
Segment Reporting Information [Line Items]          
Revenues (2,188) (1,933) (4,596) (3,678)  
Intersegment Eliminations [Member] | Oilfield Services [Member]
         
Segment Reporting Information [Line Items]          
Revenues (274) (377) (544) (735)  
Intersegment Eliminations [Member] | Other Segments [Member]
         
Segment Reporting Information [Line Items]          
Revenues 0 (7) 0 (13)  
Intersegment Eliminations [Member] | Reportable Subsegments [Member]
         
Segment Reporting Information [Line Items]          
Revenues (2,462) (2,317) (5,140) (4,426)  
Income (Loss) Before Income Taxes (147) (102) (217) (200)  
Total Assets (2,067)   (2,067)   (3,757)
Intersegment Eliminations [Member] | Intersubsegment Eliminations [Member]
         
Segment Reporting Information [Line Items]          
Revenues $ 2,462 $ 2,317 $ 5,140 $ 4,426