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Compensation and Benefit Plans
9 Months Ended
Sep. 30, 2011
Compensation and Benefit Plans 
Compensation and Benefit Plans

Note 8. Compensation and Benefit Plans

Pension Plans and Postretirement Benefits Other Than Pensions

Pension Plans

During the nine months ended September 30, 2011, EME made contributions of $19 million, and during the remainder of 2011, expects to make $4 million of additional contributions.

The following were components of pension expense:

 
  Three Months Ended
September 30,
  Nine Months Ended
September 30,
 
(in millions)
  2011
  2010
  2011
  2010
 
   

Service cost

  $ 4   $ 4   $ 13   $ 12  

Interest cost

    4     3     11     10  

Expected return on plan assets

    (3 )   (2 )   (9 )   (7 )

Amortization of net loss

        1     2     2  
       

Total expense

  $ 5   $ 6   $ 17   $ 17  
   


Postretirement Benefits Other Than Pensions

During the nine months ended September 30, 2011, EME made contributions of $1 million, and during the remainder of 2011, expects to make $1 million of additional contributions.

The following were components of postretirement benefits expense:

 
  Three Months Ended
September 30,
  Nine Months Ended
September 30,
 
(in millions)
  2011
  2010
  2011
  2010
 
   

Service cost

  $   $ 1   $ 2   $ 2  

Interest cost

    2     1     5     4  

Amortization of prior service credit

                (1 )

Amortization of net loss

    1         1      
       

Total expense

  $ 3   $ 2   $ 8   $ 5