Other Income (Expense) - net (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Other Income
Economic foreign currency exchange contracts	$ 40	$ (81)	$ 92	$ (237)
Defined benefit plans - non-service credits	61	41	195	123
Interest Income	3	1	5	2
AFUDC - equity component	5	5	15	11
Miscellaneous	2	2	3	11
Total Other Income	111	(32)	310	(90)
Other Expense
Charitable Contributions	1	1	6	6
Miscellaneous	4	2	7	16
Total Other Expense	5	3	13	22
Other Income (Expense) - net	106	(35)	297	(112)
PPL Electric Utilities Corp [Member]
Other Income
Defined benefit plans - non-service credits	1	0	4	0
AFUDC - equity component	5	5	15	11
Miscellaneous	0	0	1	0
Total Other Income	6	5	20	11
Other Expense
Charitable Contributions	1	1	2	2
Miscellaneous	0	0	0	1
Total Other Expense	1	1	2	3
Other Income (Expense) - net	$ 5	$ 4	$ 18	$ 8