Other Income (Expense) - net (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Other Income [Line Items]
Defined benefit plans - non-service credits	$ 47	$ 21	$ (2)
Interest income	4	12	9
Allowance for funds used during construction - equity component	22	18	20
Other Expense [Line Items]
Charitable contributions	(14)	(14)	(3)
Miscellaneous	(5)	(22)	(22)
Other Income (Expense) - net	54	15	2
PPL Electric Utilities Corp [Member]
Other Income [Line Items]
Defined benefit plans - non-service credits	15	9	4
Interest income	3	0	2
Allowance for funds used during construction - equity component	16	18	19
Other Expense [Line Items]
Charitable contributions	(3)	(3)	(3)
Miscellaneous	(1)	(3)	(4)
Other Income (Expense) - net	$ 30	$ 21	$ 18