v2.3.0.15
Pension And Other Postretirement Benefits (Details) (USD $)
In Millions
3 Months Ended9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2011
Sep. 30, 2010
Pension Benefits - U.S. [Member]
    
Service cost$ 148$ 125$ 397$ 349
Interest cost198199594598
Expected return on plan assets(192)(182)(577)(545)
Amortization of actuarial loss/(gain) and prior service cost123132370396
Net pension enhancement and curtailment/settlement cost64127266380
Net benefit cost3414011,0501,178
Defined benefit plan full year estimated employer contributions in current fiscal year370 370 
Defined benefit plan estimated contributions increase of previous estimate100 100 
Pension Benefits - Non-U.S. [Member]
    
Service cost147112432348
Interest cost317288956867
Expected return on plan assets(293)(247)(879)(741)
Amortization of actuarial loss/(gain) and prior service cost189137566462
Net pension enhancement and curtailment/settlement cost7374
Net benefit cost3672931,082940
Defined benefit plan full year estimated employer contributions in current fiscal year1,600 1,600 
Defined benefit plan estimated contributions increase of previous estimate470 470 
Other Postretirement Benefits [Member]
    
Service cost30269478
Interest cost9693300304
Expected return on plan assets(10)(9)(32)(29)
Amortization of actuarial loss/(gain) and prior service cost4746153154
Net benefit cost$ 163$ 156$ 515$ 507