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Other Income (Expense) - net (Tables)
 6 Months Ended
Jun. 30, 2025
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
2025202420252024
Defined benefit plans - non-service credits (Note 9)
$7 $15 $15 $23 
Interest income2 6 8 15 
AFUDC - equity component20 12 35 21 
Miscellaneous(6)(1)(7)(5)
Other Income (Expense) - net$23 $32 $51 $54 
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
2025202420252024
Defined benefit plans - non-service credits (Note 9)
$4 $4 $7 $9 
AFUDC - equity component8 7 15 11 
Miscellaneous(1)— — — 
Other Income (Expense) - net$11 $11 $22 $20 
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
2025202420252024
Defined benefit plans - non-service credits (Note 9)
$1 $2 $1 $2 
AFUDC - equity component4 2 7 3 
Miscellaneous— — — 1 
Other Income (Expense) - net$5 $4 $8 $6 
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
2025202420252024
Defined benefit plans - non-service credits (Note 9)
$2 $3 $3 $4 
AFUDC - equity component5 2 8 3 
Miscellaneous(2)(1)(1)(1)
Other Income (Expense) - net$5 $4 $10 $6