|
Segments: (Details 2) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
|
Sep. 30, 2012
|
Sep. 30, 2011
|
Sep. 30, 2012
|
Sep. 30, 2011
|
|
| Revenue: | ||||
| Revenue | $ 24,747 | $ 26,157 | $ 75,203 | $ 77,430 |
|
Total reportable segment
|
||||
| Revenue: | ||||
| Revenue | 26,570 | 27,963 | 80,561 | 83,015 |
|
Elimination of internal transactions
|
||||
| Revenue: | ||||
| Revenue | (1,976) | (1,989) | (5,848) | (6,148) |
|
Other revenue adjustments
|
||||
| Revenue: | ||||
| Revenue | $ 154 | $ 182 | $ 490 | $ 563 |