Pension And Postretirement Benefits (Change In The Projected Benefit Obligation) (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2011
|
Dec. 31, 2010
|
Dec. 31, 2009
|
|
Pension Benefit [Member]
|
|||
Benefit obligation at beginning of year | $ 53,917 | $ 50,850 | |
Service cost - benefits earned during the period | 1,186 | 1,075 | 1,070 |
Interest cost on projected benefit obligation | 2,958 | 3,150 | 3,355 |
Amendments | 0 | 2 | |
Actuarial loss | 2,972 | 4,224 | |
Special termination benefits | 27 | 101 | |
Benefits paid | (4,950) | (5,485) | |
Other | 0 | 0 | |
Benefit obligation at end of year | 56,110 | 53,917 | 50,850 |
Postretirement Benefit [Member]
|
|||
Benefit obligation at beginning of year | 36,638 | 36,225 | |
Service cost - benefits earned during the period | 362 | 348 | 334 |
Interest cost on projected benefit obligation | 2,051 | 2,257 | 2,434 |
Amendments | (1,830) | (742) | |
Actuarial loss | 478 | 1,046 | |
Special termination benefits | 4 | 7 | |
Benefits paid | (2,750) | (2,536) | |
Other | 0 | 33 | |
Benefit obligation at end of year | 34,953 | 36,638 | 36,225 |
Supplemental Retirement Plans [Member]
|
|||
Service cost - benefits earned during the period | 14 | 12 | 11 |
Interest cost on projected benefit obligation | $ 126 | $ 134 | $ 140 |
X | ||||||||||
- Definition
The net increase or decrease of changes in the value of the projected benefit obligation resulting from experience different from that assumed or from a change in an actuarial assumption, or the consequence of a decision to temporarily deviate from the substantive plan, recognized in other comprehensive income. No definition available.
|
X | ||||||||||
- Definition
The amount of increase or decrease in the projected benefit obligation due to changes not otherwise defined. No definition available.
|
X | ||||||||||
- Definition
1) For defined benefit pension plans, the benefit obligation is the projected benefit obligation, which is the actuarial present value as of a date of all benefits attributed by the pension benefit formula to employee service rendered prior to that date. 2) For other postretirement defined benefit plans, the benefit obligation is the accumulated postretirement benefit obligation, which is the actuarial present value of benefits attributed to employee service rendered to a particular date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
The amount of payments made for which participants are entitled under a pension plan, including pension benefits, death benefits, and benefits due on termination of employment. Also includes payments made under a postretirement benefit plan, including prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. This item represents a periodic decrease to the plan obligations and a decrease to plan assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
The amount of increase or decrease due to a change in the terms of an existing plan or the initiation of a new plan. A plan amendment may increase or decrease benefits, including those attributed to years of service already rendered. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition
The amount of increase related to special termination benefits offered to and accepted by employees in connection with their termination of employment that are only offered for a short period of time. A situation involving termination benefits may also involve a curtailment. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|