Other Income (Expense) - net (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Other Income
Defined benefit plans - non-service credits	$ 9	$ 13	$ 32	$ 30
AFUDC - equity component	13	7	33	21
Miscellaneous	0	(7)	0	(19)
Other Expense
Charitable Contributions	0	(1)	(4)	(3)
Other Income (Expense) - net	32	16	86	51
Interest Income (Expense), Nonoperating, Net	10	4	25	22
PPL Electric Utilities Corp [Member]
Other Income
Defined benefit plans - non-service credits	4	5	13	15
AFUDC - equity component	6	4	17	12
Miscellaneous	0	(2)	1	(2)
Other Expense
Charitable Contributions	0	0	(3)	(2)
Other Income (Expense) - net	13	8	33	29
Interest Income (Expense), Nonoperating, Net	3	1	5	6
Louisville Gas And Electric Co [Member]
Other Income
Defined benefit plans - non-service credits	0	0	3	0
AFUDC - equity component	2	1	5	2
Miscellaneous	1	(1)	0	0
Other Expense
Other Income (Expense) - net	3	0	9	2
Interest Income (Expense), Nonoperating, Net	0	0	1	0
Kentucky Utilities Co [Member]
Other Income
Defined benefit plans - non-service credits	2	0	6	4
AFUDC - equity component	3	1	6	2
Miscellaneous	(1)	0	(3)	0
Other Expense
Other Income (Expense) - net	4	1	10	6
Interest Income (Expense), Nonoperating, Net	$ 0	$ 0	$ 1	$ 0