Other Income (Expense) - net (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Other Income
Defined benefit plans - non-service credits	$ 8	$ 2	$ 12	$ 3
Interest Income	4	1	4	1
AFUDC - equity component	5	5	9	8
Miscellaneous	5	1	5	2
Total Other Income	22	9	30	14
Other Expense
Charitable Contributions	1	1	2	2
Miscellaneous	8	(2)	15	7
Total Other Expense	9	(1)	17	9
Other Income (Expense) - net	13	10	13	5
PPL Electric Utilities Corp [Member]
Other Expense
Other Income (Expense) - net	$ 5	$ 5	$ 10	$ 8