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Defined Benefits (Tables)
 9 Months Ended
Sep. 30, 2025
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 for the periods ended September 30:
Pension Benefits
 Three MonthsNine Months
 2025202420252024
PPL  
Service cost$8 $9 $23 $26 
Interest cost46 45 138 137 
Expected return on plan assets(72)(74)(215)(224)
Amortization of:
Prior service cost— 1 — 2 
Actuarial loss4 3 13 8 
Net periodic defined benefit costs (credits)$(14)$(16)$(41)$(51)

 Other Postretirement Benefits
 Three MonthsNine Months
 2025202420252024
PPL  
Service cost$2 $2 $5 $5 
Interest cost8 8 23 22 
Expected return on plan assets(7)(8)(22)(23)
Amortization of:
Prior service cost— — 1 1 
Actuarial loss(1)(1)(3)(4)
Net periodic defined benefit costs (credits)$2 $1 $4 $1