Other Income (Expense) - net (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Other Income
Defined benefit plans - non-service credits	$ 15	$ (1)	$ 23	$ 16
AFUDC - equity component	12	8	21	14
Miscellaneous	1	(10)	(1)	(10)
Other Expense
Charitable Contributions	(2)	0	(4)	(2)
Other Income (Expense) - net	32	5	54	35
Interest Income (Expense), Nonoperating, Net	6	8	15	17
PPL Electric Utilities Corp [Member]
Other Income
Defined benefit plans - non-service credits	4	5	9	10
AFUDC - equity component	7	4	11	8
Miscellaneous	1	(1)	0	0
Other Expense
Charitable Contributions	(2)	0	(3)	(2)
Other Income (Expense) - net	11	9	20	21
Interest Income (Expense), Nonoperating, Net	1	1	3	5
Louisville Gas And Electric Co [Member]
Other Income
Defined benefit plans - non-service credits	2	(1)	2	0
AFUDC - equity component	2	1	3	1
Miscellaneous	0	0	0	1
Other Expense
Other Income (Expense) - net	4	0	6	2
Interest Income (Expense), Nonoperating, Net	0	0	1	0
Kentucky Utilities Co [Member]
Other Income
Defined benefit plans - non-service credits	3	3	4	4
AFUDC - equity component	2	1	3	1
Miscellaneous	(1)	(1)	(2)	0
Other Expense
Other Income (Expense) - net	4	3	6	5
Interest Income (Expense), Nonoperating, Net	$ 0	$ 0	$ 1	$ 0