Other Income (Expense) - net (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Other Income
Economic foreign currency exchange contracts	$ 44	$ 40	$ 56	$ 92
Defined benefit plans - non-service credits	77	61	237	195
Interest Income	3	3	12	5
AFUDC - equity component	6	5	17	15
Miscellaneous	1	2	6	3
Total Other Income	131	111	328	310
Other Expense
Charitable Contributions	1	1	3	6
Miscellaneous	4	4	16	7
Total Other Expense	5	5	19	13
Other Income (Expense) - net	126	106	309	297
PPL Electric Utilities Corp [Member]
Other Income
Defined benefit plans - non-service credits	1	1	3	4
Interest Income	0	0	1	0
AFUDC - equity component	6	5	17	15
Miscellaneous	0	0	0	1
Total Other Income	7	6	21	20
Other Expense
Charitable Contributions	0	1	2	2
Miscellaneous	0	0	1	0
Total Other Expense	0	1	3	2
Other Income (Expense) - net	$ 7	$ 5	$ 18	$ 18