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Other Income (Expense) - net (Tables)
 6 Months Ended
Jun. 30, 2024
Other Income (Expense) Net [Line Items]  
Schedule of Other Nonoperating Income (Expense)
The details of "Other Income (Expense) - net" for the periods ended June 30, were:
 Three MonthsSix Months
2024202320242023
Defined benefit plans - non-service credits (Note 9)$15 $(1)$23 $16 
Interest income6 8 15 17 
AFUDC - equity component12 8 21 14 
Charitable contributions(2)— (4)(2)
Miscellaneous (a)1 (10)(1)(10)
Other Income (Expense) - net$32 $5 $54 $35 
(a)2023 includes legal expenses incurred and insurance reimbursements received related to litigation with a former affiliate, Talen Montana.
PPL Electric Utilities Corp [Member]  
Other Income (Expense) Net [Line Items]  
Schedule of Other Nonoperating Income (Expense)
The details of "Other Income (Expense) - net" for the periods ended June 30, were:
 Three MonthsSix Months
2024202320242023
Defined benefit plans - non-service credits (Note 9)$4 $5 $9 $10 
Interest income1 1 3 5 
AFUDC - equity component7 4 11 8 
Charitable contributions(2)— (3)(2)
Miscellaneous1 (1)— — 
Other Income (Expense) - net$11 $9 $20 $21 
Louisville Gas And Electric Co [Member]  
Other Income (Expense) Net [Line Items]  
Schedule of Other Nonoperating Income (Expense)
The details of "Other Income (Expense) - net" for the periods ended June 30, were:
 Three MonthsSix Months
2024202320242023
Defined benefit plans - non-service credits (Note 9)$2 $(1)$2 $— 
Interest income— — 1 — 
AFUDC - equity component2 1 3 1 
Miscellaneous— — — 1 
Other Income (Expense) - net$4 $— $6 $2 
Kentucky Utilities Co [Member]  
Other Income (Expense) Net [Line Items]  
Schedule of Other Nonoperating Income (Expense)
The details of "Other Income (Expense) - net" for the periods ended June 30, were:
 Three MonthsSix Months
2024202320242023
Defined benefit plans - non-service credits (Note 9)$3 $3 $4 $4 
Interest income— — 1 — 
AFUDC - equity component2 1 3 1 
Miscellaneous(1)(1)(2)— 
Other Income (Expense) - net$4 $3 $6 $5