v2.3.0.11
Retirement Plans (Tables)
6 Months Ended
Jun. 30, 2011
Retirement Plans Tables [Abstract]  
Net Periodic Pension And OPEB Cost/(Benefit) [Table Text Block]

The components of our net periodic pension cost were as follows:

 

 Three Months Ended  Six Months Ended
 June 30, June 30,
Millions 2011 2010  2011 2010 
Service cost$11 $11  $22 $22 
Interest cost 36  35   72  70 
Expected return on plan assets  (45)  (44)   (90)  (89)
Amortization of:         
Prior service cost  - 1   
Actuarial loss 18  10   35  21 
Net periodic pension cost$20 $13  $40 $26 

The components of our net periodic OPEB cost/(benefit) were as follows:

 

 Three Months Ended  Six Months Ended
 June 30, June 30,
Millions 2011 2010  2011 2010 
Service cost$ -$ - $ 1$
Interest cost     
Amortization of:         
Prior service (credit)  (9)  (11)   (18)  (22)
Actuarial loss     
Net periodic OPEB benefit$ (1)$ (3) $ (2)$ (6)