Other Income (Expense) - net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Other Income [Line Items]
Defined benefit plans - non-service credits	$ 42	$ 40	$ 47
Interest Income (Expense), Nonoperating	33	32	4
Allowance for funds used during construction - equity component	47	30	22
Other Expense [Line Items]
Charitable contributions	(5)	(5)	(14)
Miscellaneous	(1)	(13)	(6)
Other Income (Expense) - net	114	(40)	54
Income (Expense) Related to Talen Litigation	(2)	(124)	1
PPL Electric Utilities Corp [Member]
Other Income [Line Items]
Defined benefit plans - non-service credits	17	20	15
Interest Income (Expense), Nonoperating	8	8	3
Allowance for funds used during construction - equity component	23	16	16
Other Expense [Line Items]
Charitable contributions	(4)	(3)	(3)
Miscellaneous	1	(2)	(1)
Other Income (Expense) - net	45	39	30
LOUISVILLE GAS And ELECTRIC CO [Member]
Other Income [Line Items]
Defined benefit plans - non-service credits	3	0	3
Allowance for funds used during construction - equity component	8	3	1
Other Expense [Line Items]
Charitable contributions	(1)	(1)	(1)
Miscellaneous	2	1	1
Other Income (Expense) - net	12	3	4
Kentucky Utilities Co [Member]
Other Income [Line Items]
Defined benefit plans - non-service credits	8	6	9
Allowance for funds used during construction - equity component	9	3	1
Other Expense [Line Items]
Charitable contributions	(1)	(1)	0
Miscellaneous	(1)	0	(2)
Other Income (Expense) - net	$ 15	$ 8	$ 8