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Defined Benefits
6 Months Ended
Jun. 30, 2013
Defined Benefits [Abstract]  
Defined Benefits

9. Defined Benefits

 

(PPL, PPL Energy Supply, LKE and LG&E)

 

Certain net periodic defined benefit costs are applied to accounts that are further distributed between capital and expense, including certain costs allocated to applicable subsidiaries for plans sponsored by PPL Services and LKE. Following are the net periodic defined benefit costs (credits) of the plans sponsored by PPL, PPL Energy Supply, LKE and LG&E for the periods ended June 30:

    Pension Benefits
    Three Months Six Months
    U.S. U.K. U.S. U.K.
    2013 2012 2013 2012 2013 2012 2013 2012
PPL                        
Service cost $ 32 $ 26 $ 16 $ 14 $ 63 $ 52 $ 34 $ 27
Interest cost   53   54   78   85   107   110   159   169
Expected return on plan assets   (73)   (64)   (113)   (114)   (147)   (130)   (231)   (225)
Amortization of:                        
  Prior service cost   5   6      1   11   12      2
  Actuarial (gain) loss    20   11   37   20   40   21   75   40
Net periodic defined benefit                         
 costs (credits) $ 37 $ 33 $ 18 $ 6 $ 74 $ 65 $ 37 $ 13

    Pension Benefits
    Three Months Six Months
    2013 2012 2013 2012
PPL Energy Supply            
Service cost $ 2 $ 2 $ 4 $ 3
Interest cost   2   2   4   4
Expected return on plan assets   (2)   (3)   (5)   (5)
Amortization of:            
  Actuarial (gain) loss         1   1
Net periodic defined benefit costs (credits) $ 2 $ 1 $ 4 $ 3

               
LKE            
Service cost $ 6 $ 5 $ 13 $ 11
Interest cost   15   15   31   32
Expected return on plan assets   (20)   (17)   (41)   (35)
Amortization of:            
  Prior service cost   1   1   2   2
  Actuarial (gain) loss    9   6   17   11
Net periodic defined benefit costs (credits)  $ 11 $ 10 $ 22 $ 21
               
LG&E            
Service cost    $ 1 $ 1 $ 1
Interest cost $ 4   3   7   7
Expected return on plan assets   (5)   (4)   (10)   (9)
Amortization of:            
  Prior service cost         1   1
  Actuarial (gain) loss    4   2   7   5
Net periodic defined benefit costs (credits)  $ 3 $ 2 $ 6 $ 5

   Other Postretirement Benefits
   Three Months Six Months
   2013 2012 2013 2012
              
PPL            
Service cost $ 3 $ 3 $ 7 $ 6
Interest cost   7   8   14   16
Expected return on plan assets   (6)   (5)   (12)   (11)
Amortization of:            
 Transition obligation            1
 Actuarial (gain) loss   2   1   3   2
Net periodic defined benefit costs (credits) $ 6 $ 7 $ 12 $ 14

              
LKE            
Service cost $ 1 $ 1 $ 2 $ 2
Interest cost   2   2   4   4
Expected return on plan assets   (1)   (1)   (2)   (2)
Amortization of:            
 Transition obligation      1      1
 Prior service cost      1   1   2
 Actuarial (gain) loss      (1)      (1)
Net periodic defined benefit costs (credits) $ 2 $ 3 $ 5 $ 6

(PPL Energy Supply, PPL Electric, LG&E and KU)

 

In addition to the specific defined benefit plans they sponsor, PPL Energy Supply subsidiaries are also allocated costs of defined benefit plans sponsored by PPL Services and LG&E is allocated costs of defined benefit plans sponsored by LKE based on their participation in those plans, which management believes are reasonable. PPL Electric and KU do not independently sponsor any defined benefit plans. PPL Electric is allocated costs of defined benefit plans sponsored by PPL Services and KU is allocated costs of defined benefit plans sponsored by LKE based on their participation in those plans, which management believes are reasonable. For the periods ended June 30, PPL Services allocated the following net periodic defined benefit costs to PPL Energy Supply subsidiaries and PPL Electric, and LKE allocated the following net periodic defined benefit costs to LG&E and KU.

  Three Months Six Months
  2013 2012 2013 2012
             
PPL Energy Supply $ 12 $ 9 $ 23 $ 19
PPL Electric   9   7   18   15

LG&E   3   3   6   6
KU   5   5   9   9