|
Retirement Benefits Plans - Components of Pension Plans with Accumulated Benefit Obligation in Excess of Plan Assets (Details 3) (USD $)
In Millions, unless otherwise specified |
Dec. 31, 2012
|
Dec. 31, 2011
|
|---|---|---|
|
United States pension liabilities [Member]
|
||
| Components of pension plans with an accumulated benefit obligation in excess of plan assets | ||
| Projected benefit obligation | $ 3,817 | $ 2,899 |
| Accumulated benefit obligation | 3,639 | 2,762 |
| Fair value of plan assets | 2,607 | 1,664 |
|
Non-United States pension liabilities [Member]
|
||
| Components of pension plans with an accumulated benefit obligation in excess of plan assets | ||
| Projected benefit obligation | 1,405 | 990 |
| Accumulated benefit obligation | 1,300 | 925 |
| Fair value of plan assets | $ 657 | $ 446 |