Other Income (Expense) - net (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Other Income
Economic foreign currency exchange contracts	$ 62	$ (33)
Defined benefit plans - non-service credits	68	80
Interest Income	1	6
AFUDC - equity component	3	5
Miscellaneous	1	6
Total Other Income	135	64
Other Expense
Charitable Contributions	1	2
Miscellaneous	9	10
Total Other Expense	10	12
Other Income (Expense) - net	125	52
PPL Electric Utilities Corp [Member]
Other Expense
Other Income (Expense) - net	$ 3	$ 5