Other Income (Expense) - net (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Other Income
Defined benefit plans - non-service credits	$ 8	$ 8
AFUDC - equity component	16	9
Miscellaneous	1	(2)
Other Expense
Charitable Contributions	(2)	(2)
Other Income (Expense) - net	28	22
Interest Income (Expense), Nonoperating, Net	5	9
PPL Electric Utilities Corp [Member]
Other Income
Defined benefit plans - non-service credits	3	4
AFUDC - equity component	7	5
Other Expense
Charitable Contributions	(1)	(1)
Other Income (Expense) - net	11	9
Interest Income (Expense), Nonoperating, Net	2	1
Louisville Gas And Electric Co [Member]
Other Expense
Other Income (Expense) - net	3	2
Kentucky Utilities Co [Member]
Other Expense
Other Income (Expense) - net	$ 5	$ 2