|
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 |