XML 216 R36.htm IDEA: XBRL DOCUMENT v3.20.2
Defined Benefits (Tables)
 6 Months Ended
Jun. 30, 2020
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Schedule Of Net Periodic Defined Benefit Costs (Credits) Following are the net periodic defined benefit costs (credits) of the plans sponsored by PPL and its subsidiaries, LKE, and LG&E for the periods ended June 30:
Pension Benefits
 Three MonthsSix Months
 U.S.U.K.U.S.U.K.
 20202019202020192020201920202019
PPL    
Service cost$15  $12  $21  $17  $28  $25  $44  $34  
Interest cost36  41  35  48  74  82  71  95  
Expected return on plan assets(63) (61) (151) (150) (123) (122) (309) (298) 
Amortization of:
Prior service cost2  2  —  —  4  4  —  —  
Actuarial loss24  14  52  23  44  27  106  47  
Net periodic defined benefit costs (credits) before settlements14  8  (43) (62) 27  16  (88) (122) 
Settlements—  —  —  —  —  1  —  —  
Net periodic defined benefit costs (credits)$14  $8  $(43) $(62) $27  $17  $(88) $(122) 
 Other Postretirement Benefits
 Three MonthsSix Months
 2020201920202019
PPL  
Service cost$1  $1  $3  $2  
Interest cost5  5  10  11  
Expected return on plan assets(6) (4) (11) (9) 
Amortization of prior service cost1  —  1  —  
Net periodic defined benefit costs$1  $2  $3  $4  
LKE  
Service cost$1  $1  $2  $2  
Interest cost2  2  4  4  
Expected return on plan assets(3) (2) (5) (4) 
Amortization of:
Prior service cost—  1  —  1  
Actuarial gain—  (1) —  (1) 
Net periodic defined benefit costs$—  $1  $1  $2  
PPL Electric Utilities Corp [Member]  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Allocation of Net Periodic Benefit Costs For the periods ended June 30, PPL Services allocated the following net periodic defined benefit costs to PPL Electric, and LKE allocated the following net periodic defined benefit costs to LG&E and KU:
 Three MonthsSix Months
 2020201920202019
PPL Electric$3  $2  $6  $5  
LG&E (a)2  1  5  2  
KU—  —  1  —  

(a) Allocations to LG&E increased in 2020 primarily due to the merger of plans sponsored by LKE and LG&E effective January 1, 2020 into the LG&E and KU Pension Plan.
LG And E And KU Energy LLC [Member]  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Schedule Of Net Periodic Defined Benefit Costs (Credits) Following are the net periodic defined benefit costs (credits) of the plans sponsored by PPL and its subsidiaries, LKE, and LG&E for the periods ended June 30:
Pension Benefits
Three MonthsSix Months
 2020201920202019
LKE
Service cost$7  $5  $12  $11  
Interest cost13  17  29  33  
Expected return on plan assets(26) (26) (50) (51) 
Amortization of:
Prior service cost2  2  4  4  
Actuarial loss (a)10  6  19  10  
Net periodic defined benefit costs$6  $4  $14  $7  
(a) As a result of treatment approved by the KPSC, the difference between actuarial loss calculated in accordance with LKE's accounting policy and actuarial loss calculated using a 15-year amortization period was $3 million and $6 million for the three and six months ended June 30, 2020 and $1 million for the three and six months ended June 30, 2019. This difference is recorded as a regulatory asset.
 Other Postretirement Benefits
 Three MonthsSix Months
 2020201920202019
PPL  
Service cost$1  $1  $3  $2  
Interest cost5  5  10  11  
Expected return on plan assets(6) (4) (11) (9) 
Amortization of prior service cost1  —  1  —  
Net periodic defined benefit costs$1  $2  $3  $4  
LKE  
Service cost$1  $1  $2  $2  
Interest cost2  2  4  4  
Expected return on plan assets(3) (2) (5) (4) 
Amortization of:
Prior service cost—  1  —  1  
Actuarial gain—  (1) —  (1) 
Net periodic defined benefit costs$—  $1  $1  $2  
Louisville Gas And Electric Co [Member]  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Schedule Of Net Periodic Defined Benefit Costs (Credits) Following are the net periodic defined benefit costs (credits) of the plans sponsored by PPL and its subsidiaries, LKE, and LG&E for the periods ended June 30:
Pension Benefits
 Three MonthsSix Months
 2019 (a)2019 (a)
LG&E
Service cost$1  $1  
Interest cost3  6  
Expected return on plan assets(5) (11) 
Amortization of: 
Prior service cost2  3  
Actuarial loss 1  3  
Net periodic defined benefit costs $2  $2  

(a) The pension plans sponsored by LKE and LG&E were merged effective January 1, 2020 into the LG&E and KU Pension Plan, sponsored by LKE.
Allocation of Net Periodic Benefit Costs For the periods ended June 30, PPL Services allocated the following net periodic defined benefit costs to PPL Electric, and LKE allocated the following net periodic defined benefit costs to LG&E and KU:
 Three MonthsSix Months
 2020201920202019
PPL Electric$3  $2  $6  $5  
LG&E (a)2  1  5  2  
KU—  —  1  —  

(a) Allocations to LG&E increased in 2020 primarily due to the merger of plans sponsored by LKE and LG&E effective January 1, 2020 into the LG&E and KU Pension Plan.
Kentucky Utilities Co [Member]  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]  
Allocation of Net Periodic Benefit Costs For the periods ended June 30, PPL Services allocated the following net periodic defined benefit costs to PPL Electric, and LKE allocated the following net periodic defined benefit costs to LG&E and KU:
 Three MonthsSix Months
 2020201920202019
PPL Electric$3  $2  $6  $5  
LG&E (a)2  1  5  2  
KU—  —  1  —  

(a) Allocations to LG&E increased in 2020 primarily due to the merger of plans sponsored by LKE and LG&E effective January 1, 2020 into the LG&E and KU Pension Plan.