|
Pension and Other Employee Benefits (Schedule of Change in Plan Assets) (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | |
|---|---|---|
|
Dec. 31, 2012
|
Dec. 31, 2011
|
|
|
Defined Pension Benefits [Member]
|
||
| Fair value of plan assets, total | $ 15,552 | $ 15,099 |
| Actual return (loss) on plan assets | 1,868 | (148) |
| Company contributions | 1,221 | 1,828 |
| Plan participants' contributions | 18 | 19 |
| Plan settlements | (3) | 0 |
| Foreign exchange gain (loss) | 27 | (1) |
| Benefits paid | (1,233) | (1,245) |
| Net transfer in | 0 | 0 |
| Fair value of plan assets, total | 17,450 | 15,552 |
|
Other Benefits [Member]
|
||
| Fair value of plan assets, total | 396 | 433 |
| Actual return (loss) on plan assets | 46 | (3) |
| Company contributions | 19 | 18 |
| Plan participants' contributions | 44 | 46 |
| Plan settlements | 0 | 0 |
| Foreign exchange gain (loss) | 0 | 0 |
| Benefits paid | (97) | (98) |
| Net transfer in | 0 | 0 |
| Fair value of plan assets, total | $ 408 | $ 396 |