|
Other Pretax Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive (Income) Loss (Detail) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | |
|---|---|---|
|
Dec. 31, 2013
|
Dec. 31, 2012
|
|
|
Pension
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Prior service cost | $ (149) | $ 183 |
| Reversal of amortization items - Prior service cost | (6) | 1 |
| Total recognized in other comprehensive (income) loss (pre-tax) | (155) | 184 |
|
Health Care And Life
|
||
| Defined Benefit Plan Disclosure [Line Items] | ||
| Prior service cost | (119) | (1,826) |
| Reversal of amortization items - Prior service cost | 247 | 89 |
| Total recognized in other comprehensive (income) loss (pre-tax) | $ 128 | $ (1,737) |