v2.4.0.6
Employee Benefits (Tables)
3 Months Ended
Mar. 31, 2012
Employee Benefits [Abstract]  
Benefit Or (Income) Cost Related To Pension And Postretirement Health Care And Life Insurance
(dollars in millions)    Pension     Health Care and Life  
Three Months Ended March 31,        2012         2011         2012         2011  

Service cost

   $     89     $     77     $     92     $     75  

Amortization of prior service cost (credit)

     (1     18       (9     (14
  

 

 

 

Subtotal

     88       95       83       61  

Expected return on plan assets

     (442     (494     (43     (41

Interest cost

     362       397       327       355  
  

 

 

 

Net periodic benefit (income) cost

   $ 8     $ (2   $ 367     $ 375