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Retirement and Postemployment Benefits (Tables)
12 Months Ended
Dec. 31, 2013
Net Periodic Defined Benefit Costs (Credits) [Line Items]  
Schedule Of Net Periodic Defined Benefit Costs (Credits)

The following table provides the components of net periodic defined benefit costs for PPL's domestic (U.S.) and WPD (U.K.) pension and other postretirement benefit plans for the years ended December 31.

    Pension Benefits         
    U.S. U.K. Other Postretirement Benefits
    2013 2012 2011 2013 2012 2011 2013 2012 2011
Net periodic defined benefit costs                           
 (credits):                           
Service cost $ 126 $ 103 $ 95 $ 69 $ 54 $ 44 $ 14 $ 12 $ 12
Interest cost   213   220   217   320   340   282   29   31   33
Expected return on plan assets   (293)   (259)   (245)   (465)   (458)   (338)   (25)   (23)   (23)
Amortization of:                           
  Transition (asset) obligation                        2   2
  Prior service cost (credit)   22   24   24   1   4   4      1   
  Actuarial (gain) loss    80   42   30   150   79   57   6   4   6
Net periodic defined benefit costs                           
 (credits) prior to settlement                           
 charges and termination benefits   148   130   121   75   19   49   24   27   30
Settlement charges      11                     
Termination benefits (a)            3   2   50         
Net periodic defined benefit costs                           
 (credits)  $ 148 $ 141 $ 121 $ 78 $ 21 $ 99 $ 24 $ 27 $ 30
                              
Other Changes in Plan Assets                           
 and Benefit Obligations                           
 Recognized in OCI and                           
 Regulatory Assets/Liabilities -                            
 Gross:                           
Settlements    $ (11)                     
Net (gain) loss $ (319)   372 $ 117 $ 76 $ 1,073 $ 152 $ (68) $ 13 $ (9)
Prior service cost                           
 (credit)          8            (3)   (1)   10
Amortization of:                           
  Transition asset (obligation)                        (2)   (2)
  Prior service (cost) credit   (22)   (24)   (24)   (1)   (4)   (4)      (1)   
  Actuarial gain (loss)    (80)   (42)   (30)   (150)   (79)   (57)   (6)   (4)   (6)
Total recognized in OCI and                           
 regulatory assets/liabilities (b)   (421)   295   71   (75)   990   91   (77)   5   (7)
                              
Total recognized in net periodic                           
 defined benefit costs, OCI and                           
 regulatory assets/liabilities (b) $ (273) $ 436 $ 192 $ 3 $ 1,011 $ 190 $ (53) $ 32 $ 23

(a)       Related to the WPD Midlands separations in the U.K.

(b)       WPD is not subject to accounting for the effects of certain types of regulation as prescribed by GAAP. As a result, WPD does not record regulatory assets/liabilities.

Schedule of Amounts Recognized in Other Comprehensive Income and Regulatory Assets and Liabilities

For PPL's U.S. pension benefits and for other postretirement benefits, the amounts recognized in OCI and regulatory assets/liabilities for the years ended December 31 were as follows:

   U.S. Pension Benefits  Other Postretirement Benefits
    2013  2012  2011  2013  2012  2011
                    
OCI $ (228) $ 181 $ 47 $ (41) $ 12 $ (6)
Regulatory assets/liabilities   (193)   114   24   (36)   (7)   (1)
Total recognized in OCI and                  
 regulatory assets/liabilities $ (421) $ 295 $ 71 $ (77) $ 5 $ (7)
Schedule of Amounts to be Amortized from AOCI and Regulatory Assets/Liabilities in Next Fiscal Year

The estimated amounts to be amortized from AOCI and regulatory assets/liabilities into net periodic defined benefit costs in 2014 are as follows:

       
  Pension Benefits
  U.S. U.K.
       
Prior service cost (credit) $ 20   
Actuarial (gain) loss    30 $ 131
Total $ 50 $ 131
       
Amortization from Balance Sheet:      
AOCI $ 22 $ 131
Regulatory assets/liabilities   28   
Total $ 50 $ 131
Schedule of Net Periodic Defined Benefit Costs Included in Income Statement

The following net periodic defined benefit costs (credits) were charged to operating expense, excluding amounts charged to construction and other non-expense accounts. The U.K. pension benefits apply to PPL only.

  Pension Benefits         
  U.S. U.K. Other Postretirement Benefits
  2013 2012 2011 2013 2012 2011 2013 2012 2011
                            
PPL $ 117 $ 119 $ 98 $ 33 $ 25 $ 82 $ 19 $ 22 $ 24
PPL Energy Supply   45   37   27            6   6   7
PPL Electric (a)   18   19   14            3   3   4

LKE   32   31   40            8   9   11
LG&E   14   13   16            4   5   5
KU (a)   9   8   10            2   3   4

(a)       PPL Electric and KU do not directly sponsor any defined benefit plans. PPL Electric and KU were allocated these costs of defined benefit plans sponsored by PPL Services (for PPL Electric) and by LKE (for KU), based on their participation in those plans, which management believes are reasonable.

Defined Benefit Plan Assumptions and Impact of One Point Change on Postretirement Plans

The following weighted-average assumptions were used in the valuation of the benefit obligations at December 31.

   Pension Benefits      
   U.S. U.K. Other Postretirement Benefits
   2013 2012 2013 2012 2013 2012
PPL                  
 Discount rate  5.12%  4.22%  4.41%  4.27%  4.91%  4.00%
 Rate of compensation increase  3.97%  3.98%  4.00%  4.00%  3.96%  3.97%
                   
PPL Energy Supply                  
 Discount rate  5.18%  4.25%        4.51%  3.77%
 Rate of compensation increase  3.94%  3.95%        3.94%  3.95%

                    
LKE                  
 Discount rate  5.18%  4.24%        4.91%  3.99%
 Rate of compensation increase  4.00%  4.00%        4.00%  4.00%
                    
LG&E                  
 Discount rate  5.13%  4.20%            

The following weighted-average assumptions were used to determine the net periodic defined benefit costs for the years ended December 31.

   Pension Benefits         
   U.S. U.K. Other Postretirement Benefits
   2013 2012 2011 2013 2012 2011 2013 2012 2011
PPL                           
 Discount rate  4.22%  5.06%  5.42%  4.27%  5.24%  5.59%  4.00%  4.80%  5.14%
 Rate of compensation increase  3.98%  4.02%  4.88%  4.00%  4.00%  3.75%  3.97%  4.00%  4.90%
 Expected return on plan assets (a)  7.03%  7.07%  7.25%  7.16%  7.17%  7.04%  5.94%  5.99%  6.57%
                            
PPL Energy Supply                           
 Discount rate  4.25%  5.12%  5.47%           3.77%  4.60%  4.95%
 Rate of compensation increase  3.95%  4.00%  4.75%           3.95%  4.00%  4.75%
 Expected return on plan assets (a)  7.00%  7.00%  7.25%           N/A  N/A  N/A

                             
LKE                           
 Discount rate  4.24%  5.09%  5.49%           3.99%  4.78%  5.12%
 Rate of compensation increase  4.00%  4.00%  5.25%           4.00%  4.00%  5.25%
 Expected return on plan assets (a)  7.10%  7.25%  7.25%           6.76%  7.02%  7.16%
                             
LG&E                           
 Discount rate  4.20%  5.00%  5.39%                  
 Expected return on plan assets (a)  7.10%  7.25%  7.25%                  

(a)       The expected long-term rates of return for pension and other postretirement benefits are based on management's projections using a best-estimate of expected returns, volatilities and correlations for each asset class. Each plan's specific current and expected asset allocations are also considered in developing a reasonable return assumption.

 

(PPL, PPL Energy Supply and LKE)

 

The following table provides the assumed health care cost trend rates for the years ended December 31:

     2013 2012 2011
PPL and PPL Energy Supply         
 Health care cost trend rate assumed for next year         
   - obligations  7.6%  8.0%  8.5%
   - cost  8.0%  8.5%  9.0%
 Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)         
   - obligations  5.0%  5.5%  5.5%
   - cost  5.5%  5.5%  5.5%
 Year that the rate reaches the ultimate trend rate         
   - obligations  2020  2019  2019
   - cost  2019  2019  2019

             
LKE         
 Health care cost trend rate assumed for next year         
   - obligations  7.6%  8.0%  8.5%
   - cost  8.0%  8.5%  9.0%
 Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)         
   - obligations  5.0%  5.5%  5.5%
   - cost  5.5%  5.5%  5.5%
 Year that the rate reaches the ultimate trend rate         
   - obligations  2020  2019  2019
   - cost  2019  2019  2019

A one percentage point change in the assumed health care costs trend rate assumption would have had the following effects on the other postretirement benefit plans in 2013:

   One Percentage Point
   Increase Decrease
Effect on accumulated postretirement benefit obligation      
 PPL $ 6 $ (5)
 LKE   5   (4)
Schedule of Funded Status of Defined Benefit Plans

The funded status of PPL's plans at December 31 was as follows:

    Pension Benefits      
    U.S. U.K. Other Postretirement Benefits
    2013 2012 2013 2012 2013 2012
Change in Benefit Obligation                  
Benefit Obligation, beginning of period $ 5,046 $ 4,381 $ 7,888 $ 6,638 $ 722 $ 687
  Service cost   126   103   69   54   14   12
  Interest cost   213   220   320   340   29   31
  Participant contributions         15   15   12   6
  Plan amendments               (4)   (1)
  Actuarial (gain) loss    (540)   546   46   1,081   (54)   31
  Settlements      (25)            
  Termination benefits         3   2      
  Net transfer in (out)            12      
  Actual expenses paid      (3)            
  Gross benefits paid (a)   (254)   (176)   (375)   (397)   (57)   (46)
  Federal subsidy                  2
  Currency conversion         177   143      
Benefit Obligation, end of period   4,591   5,046   8,143   7,888   662   722
                     
Change in Plan Assets                  
Plan assets at fair value, beginning of period   3,939   3,471   6,911   6,351   421   391
  Actual return on plan assets   72   432   438   476   37   42
  Employer contributions   399   239   134   341   30   27
  Participant contributions         15   15   12   5
  Settlements      (25)            
  Actual expenses paid      (2)            
  Gross benefits paid (a)   (254)   (176)   (375)   (397)   (54)   (44)
  Currency conversion         161   125      
Plan assets at fair value, end of period   4,156   3,939   7,284   6,911   446   421
                     
Funded Status, end of period $ (435) $ (1,107) $ (859) $ (977) $ (216) $ (301)
                     
Amounts recognized in the Balance                  
 Sheets consist of:                  
  Current liability $ (8) $ (8)       $ (1) $ (1)
  Noncurrent liability   (427)   (1,099) $ (859) $ (977)   (215)   (300)
Net amount recognized, end of period $ (435) $ (1,107) $ (859) $ (977) $ (216) $ (301)
                     
Amounts recognized in AOCI and                  
 regulatory assets/liabilities (pre-tax)                  
 consist of:                  
Prior service cost (credit) $ 69 $ 91    $ 1 $ (11) $ (7)
Net actuarial (gain) loss   842   1,241 $ 2,112   2,184   33   106
Total (b) $ 911 $ 1,332 $ 2,112 $ 2,185 $ 22 $ 99
                     
Total accumulated benefit obligation                  
 for defined benefit pension plans $ 4,191 $ 4,569 $ 7,542 $ 7,259      

(a)       Certain U.S. pension plans offered a limited-time program in 2013 during which terminated vested participants could elect to receive their accrued pension benefit as a one-time lump sum payment. The increase in gross benefits paid is primarily the result of $64 million of lump-sum cash payments made to terminated vested participants in 2013 in connection with these offerings.

 

(b)       WPD is not subject to accounting for the effects of certain types of regulation as prescribed by GAAP. As a result, WPD does not record regulatory assets/liabilities.

 

For PPL's U.S. pension and other postretirement benefit plans, the amounts recognized in AOCI and regulatory assets/liabilities at December 31 were as follows:

   U.S. Pension Benefits Other Postretirement Benefits
   2013 2012 2013 2012
          
AOCI $ 430 $ 659 $ 19 $ 59
Regulatory assets/liabilities   481   673   3   40
Total $ 911 $ 1,332 $ 22 $ 99
Schedule of Projected or Accumulated Benefit Obligations In Excess of Plan Assets

The following tables provide information on pension plans where the projected benefit obligation (PBO) or accumulated benefit obligation (ABO) exceed the fair value of plan assets:

  U.S. U.K.
  PBO in excess of plan assets PBO in excess of plan assets
   2013  2012  2013  2012
             
Projected benefit obligation $4,591 $5,046 $8,143 $7,888
Fair value of plan assets  4,156  3,939  7,284  6,911
             
  U.S. U.K.
  ABO in excess of plan assets ABO in excess of plan assets
   2013  2012  2013  2012
             
Accumulated benefit obligation $572 $4,569 $3,441 $3,349
Fair value of plan assets  431  3,939  3,131  2,812
Contributions Made to Multiemployer Plans

The table below details total contributions to all multiemployer pension and other postretirement plans, including the plan identified as significant above.

  2013 2012 2011
          
Pension Plans $36 $31 $36
Other Postretirement Benefit Plans  32  28  31
Total Contributions $68 $59 $67
Schedules of Asset Allocation of U.S. Pension Trusts Assets

The asset allocation for the trusts and the target allocation by portfolio, at December 31, are as follows:

         2013 Target Asset Allocation (a)
   Percentage of trust assets  Weighted      
   2013 (a)  2012   Average  PPL Plans  LKE Plans
                
Growth Portfolio   59%   58%  55%  55%  55%
 Equity securities   30%   31%         
 Debt securities (b)   17%   18%         
 Alternative investments   12%   9%         
Immunizing Portfolio   39%   41%  43%  43%  43%
 Debt securities (b)   40%   40%         
 Derivatives   (1%)   1%         
Liquidity Portfolio   2%   1%  2%  2%  2%
Total   100%   100%  100%  100%  100%

(a)       Allocations exclude consideration of cash for the WKE Bargaining Employees' Retirement Plan and a guaranteed annuity contract held by the LG&E and KU Retirement Plan.

(b)       Includes commingled debt funds, which PPL treats as debt securities for asset allocation purposes.

Schedule of Fair Value of Financial Assets for U.S. Pension Plan Assets

The fair value of net assets in the U.S. pension plan trusts by asset class and level within the fair value hierarchy was:

     December 31, 2013 December 31, 2012
        Fair Value Measurements Using    Fair Value Measurements Using
     Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3
PPL Services Corporation Master Trust                        
Cash and cash equivalents  $ 120 $ 120       $ 84 $ 84      
Equity securities:                        
  U.S.:                        
   Large-cap   480   134 $ 346      558   206 $ 352   
   Small-cap   137   137         124   124      
   Commingled debt   749   13   736      676   56   620   
  International   630   163   467      557   184   373   
Debt securities:                        
  U.S. Treasury and U.S. government sponsored                        
   agency   617   563   54      704   634   70   
  Residential/commercial backed securities   12      11 $ 1   12      11 $ 1
  Corporate   963      940   23   874      847   27
  Other   24      24      24      23   1
  International   7      7      7      7   
Alternative investments:                        
  Commodities   108      108      59      59   
  Real estate   134      134      93      93   
  Private equity   80         80   75         75
  Hedge funds   210      210      125      125   
Derivatives:                        
  Interest rate swaps and swaptions   (49)      (49)      36      36   
  Other   12      12      2      2   
Insurance contracts   37         37   42         42
PPL Services Corporation Master Trust assets, at                        
 fair value   4,271 $ 1,130 $ 3,000 $ 141   4,052 $ 1,288 $ 2,618 $ 146
Receivables and payables, net (a)               (11)         
401(h) account restricted for other                        
 postretirement benefit obligations   (115)            (102)         
Total PPL Services Corporation Master Trust                        
 pension assets $ 4,156          $ 3,939         
                            

(a)       Receivables and payables represent amounts for investments sold/purchased but not yet settled along with interest and dividends earned but not yet received.

Reconciliation of U.S. Pension Trust Assets Classified as Level 3 Included in Earnings

A reconciliation of U.S. pension trust assets classified as Level 3 at December 31, 2013 is as follows:

      Residential/               
      commercial              
      backed Corporate Private Insurance Other   
      securities debt equity contracts debt Total
                       
Balance at beginning of period $ 1 $ 27 $ 75 $ 42 $ 1 $ 146
 Actual return on plan assets                  
   Relating to assets still held                   
    at the reporting date         3   2      5
   Relating to assets sold during the period      5            5
 Purchases, sales and settlements      (9)   2   (7)      (14)
 Transfers from level 3 to level 2               (1)   (1)
Balance at end of period $ 1 $ 23 $ 80 $ 37 $  $ 141

A reconciliation of U.S. pension trust assets classified as Level 3 at December 31, 2012 is as follows:

      Residential/               
      commercial              
      backed Corporate Private Insurance Other   
      securities debt equity contracts debt Total
                       
Balance at beginning of period    $ 7 $ 45 $ 46    $ 98
 Actual return on plan assets                  
   Relating to assets still held                   
    at the reporting date      1   10   3      14
   Relating to assets sold during the period      2            2
 Purchases, sales and settlements $ 1   21   20   (7)      35
 Transfers from level 2 to level 3             $ 1   1
 Transfers from level 3 to level 2      (4)            (4)
Balance at end of period $ 1 $ 27 $ 75 $ 42 $ 1 $ 146
Schedules of Target Allocation of U.S. Other Postretirement Benefit Plans VEBA Trust

The asset allocation for the PPL VEBA trusts, excluding LKE, and the target allocation, by asset class, at December 31 are detailed below.

     Target Asset
   Percentage of plan assets Allocation
  2013 2012 2013
Asset Class         
U.S. Equity securities   55%   46%  45%
Debt securities (a)   41%   51%  50%
Cash and cash equivalents (b)   4%   3%  5%
 Total   100%   100%   100%

(a)       Includes commingled debt funds and debt securities.

(b)       Includes money market funds.

Schedule of Fair Value of Financial Assets for U.S. Postretirement Benefits

The fair value of assets in the U.S. other postretirement benefit plans by asset class and level within the fair value hierarchy was:

     December 31, 2013 December 31, 2012
        Fair Value Measurement Using    Fair Value Measurement Using
     Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3
Money market funds $ 12 $ 12       $ 13 $ 13      
U.S. Equity securities:                        
  Large-cap   182    $ 182      145    $ 145   
  Commingled debt    100      100      119      119   
Debt securities:                        
  Municipalities    36      36      41      41   
Total VEBA trust assets, at fair value   330 $ 12 $ 318      318 $ 13 $ 305   
Receivables and payables, net (a)   1            1         
401(h) account assets (b)   115            102         
Total other postretirement benefit plan                        
 assets $ 446          $ 421         

(a)       Receivables and payables represent amounts for investments sold/purchased but not yet settled along with interest and dividends earned but not yet received.

(b)       LKE's other postretirement benefit plan was invested primarily in a 401(h) account as disclosed in the PPL Services Corporation Master Trust.

Schedules of Asset Allocation of U.K. Pension Plan Assets

The asset allocation and target allocation at December 31 of WPD's pension plans are detailed below.

         Target Asset
   Percentage of plan assets Allocation
  2013 2012 2013
Asset Class         
Equity securities         
 U.K.   7%   6%  7%
 European (excluding the U.K.)   5%   14%  4%
 Asian-Pacific   3%     3%
 North American    5%     5%
 Emerging markets   8%   3%  8%
 Currency   7%   2%  3%
 Global Tactical Asset Allocation   19%   18%  19%
Debt securities (a)   40%   51%  45%
Alternative investments   6%   6%  6%
 Total   100%   100%   100%

(a)       Includes commingled debt funds.

Schedule of Fair Value of Financial Assets for U.K. Pension Plan Assets

The fair value of assets in the U.K. pension plans by asset class and level within the fair value hierarchy was:

     December 31, 2013 December 31, 2012
        Fair Value Measurement Using    Fair Value Measurement Using
     Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3
                            
Cash and cash equivalents $ 10 $ 10       $ 14 $ 14      
Equity securities:                        
  U.K. companies   523   267 $ 256      440   223 $ 217   
  European companies (excluding the U.K.)   355   275   80      956   720   236   
  Asian-Pacific companies   226   180   46               
  North American companies   352   254   98               
  Emerging markets companies   411   126   285      231      231   
  Global Equities   161      161               
  Currency   485      485      127      127   
  Global Tactical Asset Allocation   1,384      1,384      1,220      1,220   
  Commingled debt:                        
   U.K. corporate bonds   504      504      593      593   
   U.K. gilts   2,426      2,426      2,907      2,907   
Alternative investments:                        
  Real estate   447      447      423      423   
Fair value - U.K. pension plans $ 7,284 $ 1,112 $ 6,172    $ 6,911 $ 957 $ 5,954   
Schedule of Expected Cash Flows - U.S. Defined Benefit Plans - Expected Payments and Related Federal Subsidy

The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid by the plans and the following federal subsidy payments are expected to be received by PPL.

     Other Postretirement
        Expected
     Benefit Federal
   Pension Payment Subsidy
          
2014 $ 211 $ 53 $ 1
2015   222   55   1
2016   234   57   1
2017   250   59   1
2018   264   62   1
2019-2023   1,545   338   3
Schedule of Expected Cash Flows - U.K. Pension Plans - Expected Payments

The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid by the plans.

  Pension
    
2014 $ 387
2015   392
2016   397
2017   402
2018   410
2019-2023   2,128
Expected Employer Contributions to U.S. Savings Plans

Substantially all employees of PPL's domestic subsidiaries are eligible to participate in deferred savings plans (401(k)s). Employer contributions to the plans were:

  2013 2012 2011
          
PPL $ 41 $ 36 $ 31
PPL Energy Supply   12   12   11
PPL Electric   6   5   5

LKE  13  12  11
LG&E  7  6  5
KU  6  6  6
PPL Energy Supply LLC [Member]
 
Net Periodic Defined Benefit Costs (Credits) [Line Items]  
Schedule Of Net Periodic Defined Benefit Costs (Credits)

The following table provides the components of net periodic defined benefit costs for PPL Energy Supply's pension and other postretirement benefit plans for the years ended December 31.

    Pension Benefits Other Postretirement Benefits
    2013 2012 2011 2013 2012 2011
Net periodic defined benefit costs                  
(credits):                  
Service cost $ 7 $ 6 $ 5 $ 1 $ 1 $ 1
Interest cost   8   7   7      1   1
Expected return on plan assets   (10)   (9)   (9)         
Amortization of:                  
  Actuarial (gain) loss    3   2   2         
Net periodic defined benefit costs                  
 (credits)  $ 8 $ 6 $ 5 $ 1 $ 2 $ 2
                     
Other Changes in Plan Assets                  
 and Benefit Obligations                  
 Recognized in OCI:                  
Net (gain) loss $ (15) $ 16 $ 7 $ (1)    $ (2)
Prior service cost (credit)            (3) $ (1)   
Amortization of:                  
  Actuarial gain (loss)    (3)   (2)   (2)         
Total recognized in OCI   (18)   14   5   (4)   (1)   (2)
                     
Total recognized in net periodic                  
 defined benefit costs and OCI $ (10) $ 20 $ 10 $ (3) $ 1 $ 
Schedule of Net Periodic Defined Benefit Costs Included in Income Statement

In the table above, for PPL Energy Supply and LG&E, amounts include costs for the specific plans each sponsors and the following allocated costs of defined benefit plans sponsored by PPL Services (for PPL Energy Supply) and by LKE (for LG&E), based on their participation in those plans, which management believes are reasonable:

    Pension Benefits  Other Postretirement Benefits
     2013  2012  2011  2013  2012  2011
                     
PPL Energy Supply $ 38 $ 31 $ 23 $ 5 $5 $ 6

LG&E   5   5   7   4   5   5
Defined Benefit Plan Assumptions and Impact of One Point Change on Postretirement Plans

The following weighted-average assumptions were used in the valuation of the benefit obligations at December 31.

   Pension Benefits      
   U.S. U.K. Other Postretirement Benefits
   2013 2012 2013 2012 2013 2012
PPL                  
 Discount rate  5.12%  4.22%  4.41%  4.27%  4.91%  4.00%
 Rate of compensation increase  3.97%  3.98%  4.00%  4.00%  3.96%  3.97%
                   
PPL Energy Supply                  
 Discount rate  5.18%  4.25%        4.51%  3.77%
 Rate of compensation increase  3.94%  3.95%        3.94%  3.95%

                    
LKE                  
 Discount rate  5.18%  4.24%        4.91%  3.99%
 Rate of compensation increase  4.00%  4.00%        4.00%  4.00%
                    
LG&E                  
 Discount rate  5.13%  4.20%            

The following weighted-average assumptions were used to determine the net periodic defined benefit costs for the years ended December 31.

   Pension Benefits         
   U.S. U.K. Other Postretirement Benefits
   2013 2012 2011 2013 2012 2011 2013 2012 2011
PPL                           
 Discount rate  4.22%  5.06%  5.42%  4.27%  5.24%  5.59%  4.00%  4.80%  5.14%
 Rate of compensation increase  3.98%  4.02%  4.88%  4.00%  4.00%  3.75%  3.97%  4.00%  4.90%
 Expected return on plan assets (a)  7.03%  7.07%  7.25%  7.16%  7.17%  7.04%  5.94%  5.99%  6.57%
                            
PPL Energy Supply                           
 Discount rate  4.25%  5.12%  5.47%           3.77%  4.60%  4.95%
 Rate of compensation increase  3.95%  4.00%  4.75%           3.95%  4.00%  4.75%
 Expected return on plan assets (a)  7.00%  7.00%  7.25%           N/A  N/A  N/A

                             
LKE                           
 Discount rate  4.24%  5.09%  5.49%           3.99%  4.78%  5.12%
 Rate of compensation increase  4.00%  4.00%  5.25%           4.00%  4.00%  5.25%
 Expected return on plan assets (a)  7.10%  7.25%  7.25%           6.76%  7.02%  7.16%
                             
LG&E                           
 Discount rate  4.20%  5.00%  5.39%                  
 Expected return on plan assets (a)  7.10%  7.25%  7.25%                  

(a)       The expected long-term rates of return for pension and other postretirement benefits are based on management's projections using a best-estimate of expected returns, volatilities and correlations for each asset class. Each plan's specific current and expected asset allocations are also considered in developing a reasonable return assumption.

 

(PPL, PPL Energy Supply and LKE)

 

The following table provides the assumed health care cost trend rates for the years ended December 31:

     2013 2012 2011
PPL and PPL Energy Supply         
 Health care cost trend rate assumed for next year         
   - obligations  7.6%  8.0%  8.5%
   - cost  8.0%  8.5%  9.0%
 Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)         
   - obligations  5.0%  5.5%  5.5%
   - cost  5.5%  5.5%  5.5%
 Year that the rate reaches the ultimate trend rate         
   - obligations  2020  2019  2019
   - cost  2019  2019  2019

             
LKE         
 Health care cost trend rate assumed for next year         
   - obligations  7.6%  8.0%  8.5%
   - cost  8.0%  8.5%  9.0%
 Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)         
   - obligations  5.0%  5.5%  5.5%
   - cost  5.5%  5.5%  5.5%
 Year that the rate reaches the ultimate trend rate         
   - obligations  2020  2019  2019
   - cost  2019  2019  2019
Schedule of Funded Status of Defined Benefit Plans
(PPL Energy Supply)         
               
The funded status of PPL Energy Supply's plans at December 31 was as follows:
               
    Pension Benefits      
    U.S. Other Postretirement Benefits
    2013 2012 2013 2012
Change in Benefit Obligation            
Benefit Obligation, beginning of period $ 176 $ 143 $ 17 $ 17
  Service cost   7   6   1   1
  Interest cost   8   7      1
  Plan amendments         (4)   (1)
  Actuarial (gain) loss   (23)   23   (1)   
  Gross benefits paid   (5)   (3)   (1)   (1)
Benefit Obligation, end of period   163   176   12   17
               
Change in Plan Assets            
Plan assets at fair value, beginning of             
 period   149   132      
  Actual return on plan assets   3   16      
  Employer contributions      4   1   
  Gross benefits paid   (5)   (3)   (1)   
Plan assets at fair value, end of period   147   149      
               
Funded Status, end of period $ (16) $ (27) $ (12) $ (17)
               
Amounts recognized in the Balance            
 Sheets consist of:            
  Current liability       $ (1) $ (1)
  Noncurrent liability $ (16) $ (27)   (11)   (16)
Net amount recognized, end of period $ (16) $ (27) $ (12) $ (17)
               
Amounts recognized in AOCI             
 (pre-tax) consist of:            
Prior service cost (credit)       $ (5) $ (1)
Net actuarial (gain) loss $ 34 $ 52   1   2
Total  $ 34 $ 52 $ (4) $ 1
               
Total accumulated benefit obligation            
 for defined benefit pension plans $ 163 $ 176      

Allocations to PPL Energy Supply resulted in liabilities at December 31 as follows:

  2013 2012
       
Pension $ 96 $ 268
Other postretirement benefits   35   60
Contributions Made to Multiemployer Plans

The table below details total contributions to all multiemployer pension and other postretirement plans, including the plan identified as significant above.

  2013 2012 2011
          
Pension Plans $36 $31 $36
Other Postretirement Benefit Plans  32  28  31
Total Contributions $68 $59 $67
Schedules of Asset Allocation of U.S. Pension Trusts Assets

The asset allocation for the trusts and the target allocation by portfolio, at December 31, are as follows:

         2013 Target Asset Allocation (a)
   Percentage of trust assets  Weighted      
   2013 (a)  2012   Average  PPL Plans  LKE Plans
                
Growth Portfolio   59%   58%  55%  55%  55%
 Equity securities   30%   31%         
 Debt securities (b)   17%   18%         
 Alternative investments   12%   9%         
Immunizing Portfolio   39%   41%  43%  43%  43%
 Debt securities (b)   40%   40%         
 Derivatives   (1%)   1%         
Liquidity Portfolio   2%   1%  2%  2%  2%
Total   100%   100%  100%  100%  100%

(b)       Includes commingled debt funds, which PPL treats as debt securities for asset allocation purposes.

Schedule of Fair Value of Financial Assets for U.S. Pension Plan Assets

The fair value of net assets in the U.S. pension plan trusts by asset class and level within the fair value hierarchy was:

     December 31, 2013 December 31, 2012
        Fair Value Measurements Using    Fair Value Measurements Using
     Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3
PPL Services Corporation Master Trust                        
Cash and cash equivalents  $ 120 $ 120       $ 84 $ 84      
Equity securities:                        
  U.S.:                        
   Large-cap   480   134 $ 346      558   206 $ 352   
   Small-cap   137   137         124   124      
   Commingled debt   749   13   736      676   56   620   
  International   630   163   467      557   184   373   
Debt securities:                        
  U.S. Treasury and U.S. government sponsored                        
   agency   617   563   54      704   634   70   
  Residential/commercial backed securities   12      11 $ 1   12      11 $ 1
  Corporate   963      940   23   874      847   27
  Other   24      24      24      23   1
  International   7      7      7      7   
Alternative investments:                        
  Commodities   108      108      59      59   
  Real estate   134      134      93      93   
  Private equity   80         80   75         75
  Hedge funds   210      210      125      125   
Derivatives:                        
  Interest rate swaps and swaptions   (49)      (49)      36      36   
  Other   12      12      2      2   
Insurance contracts   37         37   42         42
PPL Services Corporation Master Trust assets, at                        
 fair value   4,271 $ 1,130 $ 3,000 $ 141   4,052 $ 1,288 $ 2,618 $ 146
Receivables and payables, net (a)               (11)         
401(h) account restricted for other                        
 postretirement benefit obligations   (115)            (102)         
Total PPL Services Corporation Master Trust                        
 pension assets $ 4,156          $ 3,939         
                            

(a)       Receivables and payables represent amounts for investments sold/purchased but not yet settled along with interest and dividends earned but not yet received.

Reconciliation of U.S. Pension Trust Assets Classified as Level 3 Included in Earnings

A reconciliation of U.S. pension trust assets classified as Level 3 at December 31, 2013 is as follows:

      Residential/               
      commercial              
      backed Corporate Private Insurance Other   
      securities debt equity contracts debt Total
                       
Balance at beginning of period $ 1 $ 27 $ 75 $ 42 $ 1 $ 146
 Actual return on plan assets                  
   Relating to assets still held                   
    at the reporting date         3   2      5
   Relating to assets sold during the period      5            5
 Purchases, sales and settlements      (9)   2   (7)      (14)
 Transfers from level 3 to level 2               (1)   (1)
Balance at end of period $ 1 $ 23 $ 80 $ 37 $  $ 141

A reconciliation of U.S. pension trust assets classified as Level 3 at December 31, 2012 is as follows:

      Residential/               
      commercial              
      backed Corporate Private Insurance Other   
      securities debt equity contracts debt Total
                       
Balance at beginning of period    $ 7 $ 45 $ 46    $ 98
 Actual return on plan assets                  
   Relating to assets still held                   
    at the reporting date      1   10   3      14
   Relating to assets sold during the period      2            2
 Purchases, sales and settlements $ 1   21   20   (7)      35
 Transfers from level 2 to level 3             $ 1   1
 Transfers from level 3 to level 2      (4)            (4)
Balance at end of period $ 1 $ 27 $ 75 $ 42 $ 1 $ 146
Schedule of Expected Cash Flows - U.S. Defined Benefit Plans - Expected Payments and Related Federal Subsidy

The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid by the plans.

     Other
  Pension Postretirement
       
2014 $ 5 $ 1
2015   6   2
2016   6   2
2017   7   2
2018   8   2
2019-2023   52   11
PPL Electric Utilities Corp [Member]
 
Net Periodic Defined Benefit Costs (Credits) [Line Items]  
Schedule of Funded Status of Defined Benefit Plans

Allocations to PPL Electric resulted in liabilities at December 31 as follows.

  2013 2012
       
Pension $ 96 $ 237
Other postretirement benefits   41   61
LG And E And KU Energy LLC [Member]
 
Net Periodic Defined Benefit Costs (Credits) [Line Items]  
Schedule Of Net Periodic Defined Benefit Costs (Credits)

The following table provides the components of net periodic defined benefit costs for LKE's pension and other postretirement benefit plans for the years ended December 31.

                     
    Pension Benefits Other Postretirement Benefits
    2013 2012 2011 2013 2012 2011
Net periodic defined benefit costs                  
 (credits):                  
Service cost  $ 26 $ 22 $ 24 $ 5 $ 4 $ 4
Interest cost    62   64   67   8   9   10
Expected return on plan assets   (82)   (70)   (64)   (5)   (4)   (3)
Amortization of:                  
  Transition (asset) obligation               2   2
  Prior service cost (credit)   5   5   5   3   3   2
  Actuarial (gain) loss    33   22   24      (1)   
Net periodic defined benefit costs (credits) $ 44 $ 43 $ 56 $ 11 $ 13 $ 15
                     
Other Changes in Plan Assets                  
 and Benefit Obligations                  
 Recognized in OCI and                  
 Regulatory Assets/Liabilities -                   
 Gross:                  
Net (gain) loss $ (116) $ 96 $ 29 $ (14) $ (11) $ (3)
Prior service cost (credit)         8         11
Amortization of:                  
  Transition (asset) obligation               (2)   (2)
  Prior service (cost) credit   (5)   (5)   (5)   (3)   (3)   (2)
  Actuarial gain (loss)   (33)   (22)   (24)      1   
Total recognized in OCI and                  
 regulatory assets/liabilities   (154)   69   8   (17)   (15)   4
                     
Total recognized in net periodic                  
 defined benefit costs, OCI and regulatory                  
 assets/liabilities $ (110) $ 112 $ 64 $ (6) $ (2) $ 19
Schedule of Amounts Recognized in Other Comprehensive Income and Regulatory Assets and Liabilities

For LKE's pension and other postretirement benefits, the amounts recognized in OCI and regulatory assets/liabilities for the years ended December 31 were as follows:

       
    Pension Benefits Other Postretirement Benefits
    2013 2012 2011 2013 2012 2011
                     
                     
 OCI $ (46) $ 34 $ 1 $ (1) $ (1) $ 2
 Regulatory assets/liabilities   (108)   35   7   (16)   (14)   2
 Total recognized in OCI and                  
  regulatory assets/liabilities $ (154) $ 69 $ 8 $ (17) $ (15) $ 4
Schedule of Amounts to be Amortized from AOCI and Regulatory Assets/Liabilities in Next Fiscal Year

 

The estimated amounts to be amortized from regulatory assets/liabilities into net periodic defined benefit costs for LKE in 2014 are as follows.

     Other
  Pension Postretirement
  Benefits Benefits
       
Prior service cost (credit) $ 5 $ 2
Actuarial (gain) loss   13   (1)
Total $ 18 $ 1
       
Amortization from Balance Sheet:      
Regulatory assets/liabilities $ 18 $ 1
Total $ 18 $ 1
Defined Benefit Plan Assumptions and Impact of One Point Change on Postretirement Plans

The following weighted-average assumptions were used in the valuation of the benefit obligations at December 31.

   Pension Benefits      
   U.S. U.K. Other Postretirement Benefits
   2013 2012 2013 2012 2013 2012
PPL                  
 Discount rate  5.12%  4.22%  4.41%  4.27%  4.91%  4.00%
 Rate of compensation increase  3.97%  3.98%  4.00%  4.00%  3.96%  3.97%
                   
PPL Energy Supply                  
 Discount rate  5.18%  4.25%        4.51%  3.77%
 Rate of compensation increase  3.94%  3.95%        3.94%  3.95%

                    
LKE                  
 Discount rate  5.18%  4.24%        4.91%  3.99%
 Rate of compensation increase  4.00%  4.00%        4.00%  4.00%
                    
LG&E                  
 Discount rate  5.13%  4.20%            

The following weighted-average assumptions were used to determine the net periodic defined benefit costs for the years ended December 31.

   Pension Benefits         
   U.S. U.K. Other Postretirement Benefits
   2013 2012 2011 2013 2012 2011 2013 2012 2011
PPL                           
 Discount rate  4.22%  5.06%  5.42%  4.27%  5.24%  5.59%  4.00%  4.80%  5.14%
 Rate of compensation increase  3.98%  4.02%  4.88%  4.00%  4.00%  3.75%  3.97%  4.00%  4.90%
 Expected return on plan assets (a)  7.03%  7.07%  7.25%  7.16%  7.17%  7.04%  5.94%  5.99%  6.57%
                            
PPL Energy Supply                           
 Discount rate  4.25%  5.12%  5.47%           3.77%  4.60%  4.95%
 Rate of compensation increase  3.95%  4.00%  4.75%           3.95%  4.00%  4.75%
 Expected return on plan assets (a)  7.00%  7.00%  7.25%           N/A  N/A  N/A

                             
LKE                           
 Discount rate  4.24%  5.09%  5.49%           3.99%  4.78%  5.12%
 Rate of compensation increase  4.00%  4.00%  5.25%           4.00%  4.00%  5.25%
 Expected return on plan assets (a)  7.10%  7.25%  7.25%           6.76%  7.02%  7.16%
                             
LG&E                           
 Discount rate  4.20%  5.00%  5.39%                  
 Expected return on plan assets (a)  7.10%  7.25%  7.25%                  

(a)       The expected long-term rates of return for pension and other postretirement benefits are based on management's projections using a best-estimate of expected returns, volatilities and correlations for each asset class. Each plan's specific current and expected asset allocations are also considered in developing a reasonable return assumption.

 

(PPL, PPL Energy Supply and LKE)

 

The following table provides the assumed health care cost trend rates for the years ended December 31:

     2013 2012 2011
PPL and PPL Energy Supply         
 Health care cost trend rate assumed for next year         
   - obligations  7.6%  8.0%  8.5%
   - cost  8.0%  8.5%  9.0%
 Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)         
   - obligations  5.0%  5.5%  5.5%
   - cost  5.5%  5.5%  5.5%
 Year that the rate reaches the ultimate trend rate         
   - obligations  2020  2019  2019
   - cost  2019  2019  2019

             
LKE         
 Health care cost trend rate assumed for next year         
   - obligations  7.6%  8.0%  8.5%
   - cost  8.0%  8.5%  9.0%
 Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)         
   - obligations  5.0%  5.5%  5.5%
   - cost  5.5%  5.5%  5.5%
 Year that the rate reaches the ultimate trend rate         
   - obligations  2020  2019  2019
   - cost  2019  2019  2019

A one percentage point change in the assumed health care costs trend rate assumption would have had the following effects on the other postretirement benefit plans in 2013:

   One Percentage Point
   Increase Decrease
Effect on accumulated postretirement benefit obligation      
 PPL $ 6 $ (5)
 LKE   5   (4)
Schedule of Funded Status of Defined Benefit Plans

The funded status of LKE's plans at December 31 was as follows:

    Pension Benefits Other Postretirement Benefits
    2013 2012 2013 2012
Change in Benefit Obligation            
Benefit Obligation, beginning of period $ 1,487 $ 1,306 $ 209 $ 214
  Service cost    26   22   5   4
  Interest cost    62   63   8   9
  Participant contributions         7   8
  Actuarial (gain) loss    (177)   144   (18)   (8)
  Gross benefits paid (a)   (70)   (48)   (18)   (19)
  Federal subsidy            1
Benefit Obligation, end of period   1,328   1,487   193   209
               
Change in Plan Assets            
Plan assets at fair value, beginning of period   1,070   944   68   58
  Actual return on plan assets   21   117   1   8
  Employer contributions   152   57   16   13
  Participant contributions         7   8
  Gross benefits paid (a)   (70)   (48)   (18)   (19)
Plan assets at fair value, end of period   1,173   1,070   74   68
               
Funded Status, end of period $ (155) $ (417) $ (119) $ (141)
               
Amounts recognized in the Balance            
 Sheets consist of:            
  Current liability $ (3) $ (3)      
  Noncurrent liability   (152)   (414) $ (119) $ (141)
Net amount recognized, end of period $ (155) $ (417) $ (119) $ (141)
               
Amounts recognized in AOCI and            
 regulatory assets/liabilities (pre-tax)            
 consist of:            
Prior service cost (credit) $ 24 $ 28 $ 8 $ 11
Net actuarial (gain) loss   205   355   (30)   (17)
Total $ 229 $ 383 $ (22) $ (6)
               
Total accumulated benefit obligation            
 for defined benefit pension plans $ 1,176 $ 1,319      

(a)       Certain LKE pension plans offered a limited-time program in 2013 during which terminated vested participants could elect to receive their accrued pension benefit as a one-time lump-sum payment. The increase in gross benefits paid is primarily the result of $21 million of lump-sum cash payments made to terminated vested participants in 2013 in connection with these offerings.

The amounts recognized in AOCI and regulatory assets/liabilities at December 31 were as follows:

   Pension Benefits Other Postretirement Benefits
   2013 2012 2013 2012
          
 AOCI $ (19) $ 27      
 Regulatory assets/liabilities   248   356 $ (22) $ (6)
 Total $ 229 $ 383 $ (22) $ (6)
Schedule of Projected or Accumulated Benefit Obligations In Excess of Plan Assets

The following tables provide information on pension plans where the projected benefit obligation (PBO) or accumulated benefit obligation (ABO) exceed the fair value of plan assets:

  PBO in excess of plan assets
   2013  2012
       
Projected benefit obligation $1,328 $1,487
Fair value of plan assets  1,173  1,070
       
  ABO in excess of plan assets
   2013  2012
       
Accumulated benefit obligation $350 $1,319
Fair value of plan assets  284  1,070
Schedules of Asset Allocation of U.S. Pension Trusts Assets

The asset allocation for the trusts and the target allocation by portfolio, at December 31, are as follows:

         2013 Target Asset Allocation (a)
   Percentage of trust assets  Weighted      
   2013 (a)  2012   Average  PPL Plans  LKE Plans
                
Growth Portfolio   59%   58%  55%  55%  55%
 Equity securities   30%   31%         
 Debt securities (b)   17%   18%         
 Alternative investments   12%   9%         
Immunizing Portfolio   39%   41%  43%  43%  43%
 Debt securities (b)   40%   40%         
 Derivatives   (1%)   1%         
Liquidity Portfolio   2%   1%  2%  2%  2%
Total   100%   100%  100%  100%  100%

(a)       Allocations exclude consideration of cash for the WKE Bargaining Employees' Retirement Plan and a guaranteed annuity contract held by the LG&E and KU Retirement Plan.

(b)       Includes commingled debt funds, which PPL treats as debt securities for asset allocation purposes.

Schedule of Fair Value of Financial Assets for U.S. Pension Plan Assets

The fair value of net assets in the U.S. pension plan trusts by asset class and level within the fair value hierarchy was:

     December 31, 2013 December 31, 2012
        Fair Value Measurements Using    Fair Value Measurements Using
     Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3
PPL Services Corporation Master Trust                        
Cash and cash equivalents  $ 120 $ 120       $ 84 $ 84      
Equity securities:                        
  U.S.:                        
   Large-cap   480   134 $ 346      558   206 $ 352   
   Small-cap   137   137         124   124      
   Commingled debt   749   13   736      676   56   620   
  International   630   163   467      557   184   373   
Debt securities:                        
  U.S. Treasury and U.S. government sponsored                        
   agency   617   563   54      704   634   70   
  Residential/commercial backed securities   12      11 $ 1   12      11 $ 1
  Corporate   963      940   23   874      847   27
  Other   24      24      24      23   1
  International   7      7      7      7   
Alternative investments:                        
  Commodities   108      108      59      59   
  Real estate   134      134      93      93   
  Private equity   80         80   75         75
  Hedge funds   210      210      125      125   
Derivatives:                        
  Interest rate swaps and swaptions   (49)      (49)      36      36   
  Other   12      12      2      2   
Insurance contracts   37         37   42         42
PPL Services Corporation Master Trust assets, at                        
 fair value   4,271 $ 1,130 $ 3,000 $ 141   4,052 $ 1,288 $ 2,618 $ 146
Receivables and payables, net (a)               (11)         
401(h) account restricted for other                        
 postretirement benefit obligations   (115)            (102)         
Total PPL Services Corporation Master Trust                        
 pension assets $ 4,156          $ 3,939         
                            

(a)       Receivables and payables represent amounts for investments sold/purchased but not yet settled along with interest and dividends earned but not yet received.

Reconciliation of U.S. Pension Trust Assets Classified as Level 3 Included in Earnings

A reconciliation of U.S. pension trust assets classified as Level 3 at December 31, 2013 is as follows:

      Residential/               
      commercial              
      backed Corporate Private Insurance Other   
      securities debt equity contracts debt Total
                       
Balance at beginning of period $ 1 $ 27 $ 75 $ 42 $ 1 $ 146
 Actual return on plan assets                  
   Relating to assets still held                   
    at the reporting date         3   2      5
   Relating to assets sold during the period      5            5
 Purchases, sales and settlements      (9)   2   (7)      (14)
 Transfers from level 3 to level 2               (1)   (1)
Balance at end of period $ 1 $ 23 $ 80 $ 37 $  $ 141

A reconciliation of U.S. pension trust assets classified as Level 3 at December 31, 2012 is as follows:

      Residential/               
      commercial              
      backed Corporate Private Insurance Other   
      securities debt equity contracts debt Total
                       
Balance at beginning of period    $ 7 $ 45 $ 46    $ 98
 Actual return on plan assets                  
   Relating to assets still held                   
    at the reporting date      1   10   3      14
   Relating to assets sold during the period      2            2
 Purchases, sales and settlements $ 1   21   20   (7)      35
 Transfers from level 2 to level 3             $ 1   1
 Transfers from level 3 to level 2      (4)            (4)
Balance at end of period $ 1 $ 27 $ 75 $ 42 $ 1 $ 146
Schedule of Fair Value of Financial Assets for U.S. Postretirement Benefits

The fair value of assets in the U.S. other postretirement benefit plans by asset class and level within the fair value hierarchy was:

     December 31, 2013 December 31, 2012
        Fair Value Measurement Using    Fair Value Measurement Using
     Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3
Money market funds $ 12 $ 12       $ 13 $ 13      
U.S. Equity securities:                        
  Large-cap   182    $ 182      145    $ 145   
  Commingled debt    100      100      119      119   
Debt securities:                        
  Municipalities    36      36      41      41   
Total VEBA trust assets, at fair value   330 $ 12 $ 318      318 $ 13 $ 305   
Receivables and payables, net (a)   1            1         
401(h) account assets (b)   115            102         
Total other postretirement benefit plan                        
 assets $ 446          $ 421         

(a)       Receivables and payables represent amounts for investments sold/purchased but not yet settled along with interest and dividends earned but not yet received.

(b)       LKE's other postretirement benefit plan was invested primarily in a 401(h) account as disclosed in the PPL Services Corporation Master Trust.

Schedule of Expected Cash Flows - U.S. Defined Benefit Plans - Expected Payments and Related Federal Subsidy

The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid by the plans and the following federal subsidy payments are expected to be received by LKE.

     Other Postretirement
        Expected
     Benefit Federal
   Pension Payment Subsidy
          
2014 $ 58 $ 13 $ 1
2015   57   13   
2016   60   14   1
2017   64   14   
2018   69   15   1
2019-2023   425   81   2
Louisville Gas And Electric Co [Member]
 
Net Periodic Defined Benefit Costs (Credits) [Line Items]  
Schedule Of Net Periodic Defined Benefit Costs (Credits)

The following table provides the components of net periodic defined benefit costs for LG&E's pension benefit plan for the years ended December 31.

    Pension Benefits
    2013 2012 2011
Net periodic defined benefit costs (credits):         
Service cost  $ 2 $ 2 $ 2
Interest cost    14   14   14
Expected return on plan assets   (20)   (19)   (18)
Amortization of:         
  Prior service cost (credit)   2   3   2
  Actuarial (gain) loss    14   11   11
Net periodic defined benefit costs (credits) $ 12 $ 11 $ 11
            
Other Changes in Plan Assets and Benefit Obligations         
 Recognized in Regulatory Assets - Gross:         
Net (gain) loss $ (20) $ 18 $ 15
Prior service cost (credit)         9
Amortization of:         
  Prior service (cost) credit   (2)   (2)   (2)
  Actuarial gain (loss)    (14)   (11)   (11)
Total recognized in regulatory assets/liabilities   (36)   5   11
            
Total recognized in net periodic defined benefit costs and regulatory assets $ (24) $ 16 $ 22
Schedule of Amounts to be Amortized from AOCI and Regulatory Assets/Liabilities in Next Fiscal Year

 

The estimated amounts to be amortized from regulatory assets into net periodic defined benefit costs for LG&E in 2014 are as follows.

  Pension
  Benefits
    
Prior service cost (credit) $ 2
Actuarial (gain) loss    6
Total $ 8
Schedule of Net Periodic Defined Benefit Costs Included in Income Statement

In the table above, for PPL Energy Supply and LG&E, amounts include costs for the specific plans each sponsors and the following allocated costs of defined benefit plans sponsored by PPL Services (for PPL Energy Supply) and by LKE (for LG&E), based on their participation in those plans, which management believes are reasonable:

    Pension Benefits  Other Postretirement Benefits
     2013  2012  2011  2013  2012  2011
                     
PPL Energy Supply $ 38 $ 31 $ 23 $ 5 $5 $ 6

LG&E   5   5   7   4   5   5
Defined Benefit Plan Assumptions and Impact of One Point Change on Postretirement Plans

The following weighted-average assumptions were used in the valuation of the benefit obligations at December 31.

   Pension Benefits      
   U.S. U.K. Other Postretirement Benefits
   2013 2012 2013 2012 2013 2012
PPL                  
 Discount rate  5.12%  4.22%  4.41%  4.27%  4.91%  4.00%
 Rate of compensation increase  3.97%  3.98%  4.00%  4.00%  3.96%  3.97%
                   
PPL Energy Supply                  
 Discount rate  5.18%  4.25%        4.51%  3.77%
 Rate of compensation increase  3.94%  3.95%        3.94%  3.95%

                    
LKE                  
 Discount rate  5.18%  4.24%        4.91%  3.99%
 Rate of compensation increase  4.00%  4.00%        4.00%  4.00%
                    
LG&E                  
 Discount rate  5.13%  4.20%            

The following weighted-average assumptions were used to determine the net periodic defined benefit costs for the years ended December 31.

   Pension Benefits         
   U.S. U.K. Other Postretirement Benefits
   2013 2012 2011 2013 2012 2011 2013 2012 2011
PPL                           
 Discount rate  4.22%  5.06%  5.42%  4.27%  5.24%  5.59%  4.00%  4.80%  5.14%
 Rate of compensation increase  3.98%  4.02%  4.88%  4.00%  4.00%  3.75%  3.97%  4.00%  4.90%
 Expected return on plan assets (a)  7.03%  7.07%  7.25%  7.16%  7.17%  7.04%  5.94%  5.99%  6.57%
                            
PPL Energy Supply                           
 Discount rate  4.25%  5.12%  5.47%           3.77%  4.60%  4.95%
 Rate of compensation increase  3.95%  4.00%  4.75%           3.95%  4.00%  4.75%
 Expected return on plan assets (a)  7.00%  7.00%  7.25%           N/A  N/A  N/A

                             
LKE                           
 Discount rate  4.24%  5.09%  5.49%           3.99%  4.78%  5.12%
 Rate of compensation increase  4.00%  4.00%  5.25%           4.00%  4.00%  5.25%
 Expected return on plan assets (a)  7.10%  7.25%  7.25%           6.76%  7.02%  7.16%
                             
LG&E                           
 Discount rate  4.20%  5.00%  5.39%                  
 Expected return on plan assets (a)  7.10%  7.25%  7.25%                  

(a)       The expected long-term rates of return for pension and other postretirement benefits are based on management's projections using a best-estimate of expected returns, volatilities and correlations for each asset class. Each plan's specific current and expected asset allocations are also considered in developing a reasonable return assumption.

     2013 2012 2011
PPL and PPL Energy Supply         
 Health care cost trend rate assumed for next year         
   - obligations  7.6%  8.0%  8.5%
   - cost  8.0%  8.5%  9.0%
 Rate to which the cost trend rate is assumed to decline (the ultimate trend rate)         
   - obligations  5.0%  5.5%  5.5%
   - cost  5.5%  5.5%  5.5%
 Year that the rate reaches the ultimate trend rate         
   - obligations  2020  2019  2019
   - cost  2019  2019  2019
Schedule of Funded Status of Defined Benefit Plans

(LG&E)

 

The funded status of LG&E's plan at December 31, was as follows:

        Pension Benefits
        2013 2012
Change in Benefit Obligation          
Benefit Obligation, beginning of period     $ 331 $ 298
  Service cost        2   1
  Interest cost        14   14
  Actuarial (gain) loss       (35)   32
  Gross benefits paid (a)       (21)   (14)
Benefit Obligation, end of period       291   331
             
Change in Plan Assets          
Plan assets at fair value, beginning of period       287   256
  Actual return on plan assets       4   32
  Employer contributions       11   13
  Gross benefits paid (a)       (21)   (14)
Plan assets at fair value, end of period       281   287
             
Funded Status, end of period     $ (10) $ (44)
             
Amounts recognized in the Balance Sheets consist of:          
  Noncurrent liability     $ (10) $ (44)
Net amount recognized, end of period     $ (10) $ (44)
             
Amounts recognized in regulatory assets (pre-tax)          
 consist of:           
Prior service cost (credit)     $ 15 $ 17
Net actuarial (gain) loss       90   123
Total     $ 105 $ 140
             
Total accumulated benefit obligation for defined benefit pension plan     $ 288 $ 328

(a)       LG&E's pension plan offered a limited-time program in 2013 during which terminated vested participants could elect to receive their accrued pension benefit as a one-time lump-sum payment. The increase in gross benefits paid is primarily the result of $7 million of lump-sum cash payments made to terminated vested participants in 2013 in connection with this offering.

Allocations to LG&E resulted in liabilities at December 31 as follows:

  2013 2012
       
Pension $ 9 $ 58
Other postretirement benefits   73   81
Schedules of Asset Allocation of U.S. Pension Trusts Assets

The asset allocation for the trusts and the target allocation by portfolio, at December 31, are as follows:

         2013 Target Asset Allocation (a)
   Percentage of trust assets  Weighted      
   2013 (a)  2012   Average  PPL Plans  LKE Plans
                
Growth Portfolio   59%   58%  55%  55%  55%
 Equity securities   30%   31%         
 Debt securities (b)   17%   18%         
 Alternative investments   12%   9%         
Immunizing Portfolio   39%   41%  43%  43%  43%
 Debt securities (b)   40%   40%         
 Derivatives   (1%)   1%         
Liquidity Portfolio   2%   1%  2%  2%  2%
Total   100%   100%  100%  100%  100%

(a)       Allocations exclude consideration of cash for the WKE Bargaining Employees' Retirement Plan and a guaranteed annuity contract held by the LG&E and KU Retirement Plan.

(b)       Includes commingled debt funds, which PPL treats as debt securities for asset allocation purposes.

Schedule of Fair Value of Financial Assets for U.S. Pension Plan Assets

The fair value of net assets in the U.S. pension plan trusts by asset class and level within the fair value hierarchy was:

     December 31, 2013 December 31, 2012
        Fair Value Measurements Using    Fair Value Measurements Using
     Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3
PPL Services Corporation Master Trust                        
Cash and cash equivalents  $ 120 $ 120       $ 84 $ 84      
Equity securities:                        
  U.S.:                        
   Large-cap   480   134 $ 346      558   206 $ 352   
   Small-cap   137   137         124   124      
   Commingled debt   749   13   736      676   56   620   
  International   630   163   467      557   184   373   
Debt securities:                        
  U.S. Treasury and U.S. government sponsored                        
   agency   617   563   54      704   634   70   
  Residential/commercial backed securities   12      11 $ 1   12      11 $ 1
  Corporate   963      940   23   874      847   27
  Other   24      24      24      23   1
  International   7      7      7      7   
Alternative investments:                        
  Commodities   108      108      59      59   
  Real estate   134      134      93      93   
  Private equity   80         80   75         75
  Hedge funds   210      210      125      125   
Derivatives:                        
  Interest rate swaps and swaptions   (49)      (49)      36      36   
  Other   12      12      2      2   
Insurance contracts   37         37   42         42
PPL Services Corporation Master Trust assets, at                        
 fair value   4,271 $ 1,130 $ 3,000 $ 141   4,052 $ 1,288 $ 2,618 $ 146
Receivables and payables, net (a)               (11)         
401(h) account restricted for other                        
 postretirement benefit obligations   (115)            (102)         
Total PPL Services Corporation Master Trust                        
 pension assets $ 4,156          $ 3,939         
                            

(a)       Receivables and payables represent amounts for investments sold/purchased but not yet settled along with interest and dividends earned but not yet received.

Reconciliation of U.S. Pension Trust Assets Classified as Level 3 Included in Earnings

A reconciliation of U.S. pension trust assets classified as Level 3 at December 31, 2013 is as follows:

      Residential/               
      commercial              
      backed Corporate Private Insurance Other   
      securities debt equity contracts debt Total
                       
Balance at beginning of period $ 1 $ 27 $ 75 $ 42 $ 1 $ 146
 Actual return on plan assets                  
   Relating to assets still held                   
    at the reporting date         3   2      5
   Relating to assets sold during the period      5            5
 Purchases, sales and settlements      (9)   2   (7)      (14)
 Transfers from level 3 to level 2               (1)   (1)
Balance at end of period $ 1 $ 23 $ 80 $ 37 $  $ 141

A reconciliation of U.S. pension trust assets classified as Level 3 at December 31, 2012 is as follows:

      Residential/               
      commercial              
      backed Corporate Private Insurance Other   
      securities debt equity contracts debt Total
                       
Balance at beginning of period    $ 7 $ 45 $ 46    $ 98
 Actual return on plan assets                  
   Relating to assets still held                   
    at the reporting date      1   10   3      14
   Relating to assets sold during the period      2            2
 Purchases, sales and settlements $ 1   21   20   (7)      35
 Transfers from level 2 to level 3             $ 1   1
 Transfers from level 3 to level 2      (4)            (4)
Balance at end of period $ 1 $ 27 $ 75 $ 42 $ 1 $ 146
Schedule of Expected Cash Flows - U.S. Defined Benefit Plans - Expected Payments and Related Federal Subsidy

The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid by the plan.

   Pension
    
2014 $ 15
2015   15
2016   15
2017   16
2018   17
2019-2023   99
Kentucky Utilities Co [Member]
 
Net Periodic Defined Benefit Costs (Credits) [Line Items]  
Schedule of Funded Status of Defined Benefit Plans

Allocations to KU resulted in liabilities at December 31 as follows.

  2013 2012
       
Pension  $ 11 $ 104
Other postretirement benefits   42   53