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Defined Benefits (Tables)
 3 Months Ended
Mar. 31, 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 March 31:
Pension Benefits
 Three Months
 20252024
PPL
Service cost$8 $9 
Interest cost45 46 
Expected return on plan assets(72)(75)
Amortization of:
Prior service cost— 1 
Actuarial loss5 2 
Net periodic defined benefit costs (credits)$(14)$(17)

 Other Postretirement Benefits
 Three Months
 20252024
PPL
Service cost$2 $1 
Interest cost7 7 
Expected return on plan assets(8)(7)
Amortization of:
Actuarial loss(1)(1)
Net periodic defined benefit costs (credits)$— $—