CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Net Income	$ 445	$ 355	$ 1,412	$ 1,050
Amounts arising during the period - gains (losses), net of tax (expense) benefit:
Foreign currency translation adjustments, net of tax	(187)	(12)	(321)	195
Qualifying derivatives, net of tax	22	1	21	(29)
Defined benefit plans:
Prior service costs, net of tax	0	0	(1)	0
Net actuarial gain (loss), net of tax	(8)	(3)	(9)	(14)
Reclassifications from AOCI - (gains) losses, net of tax expense (benefit):
Qualifying derivatives, net of tax	(14)	0	(21)	24
Equity investees' other comprehensive (income) loss, net of tax	0	0	0	1
Defined benefit plans:
Prior service costs, net of tax	0	0	1	1
Net actuarial (gain) loss, net of tax	34	34	104	97
Total other comprehensive income (loss)	(153)	20	(226)	275
Comprehensive income	292	375	1,186	1,325
LG And E And KU Energy LLC [Member]
Net Income	130	132	358	322
Defined benefit plans:
Net actuarial gain (loss), net of tax	0	(1)	0	(12)
Reclassifications from AOCI - (gains) losses, net of tax expense (benefit):
Equity investees' other comprehensive (income) loss, net of tax	0	0	0	1
Defined benefit plans:
Prior service costs, net of tax	1	0	2	1
Net actuarial (gain) loss, net of tax	1	1	2	3
Total other comprehensive income (loss)	2	0	4	(7)
Comprehensive income	$ 132	$ 132	$ 362	$ 315