CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Net Income	$ 355	$ 473	$ 1,050	$ 1,437
Amounts arising during the period - gains (losses), net of tax (expense) benefit:
Foreign currency translation adjustments, net of tax	(12)	(641)	195	(837)
Qualifying derivatives, net of tax	1	62	(29)	57
Defined benefit plans:
Net actuarial gain (loss), net of tax	(3)	(6)	(14)	(4)
Reclassifications from AOCI - (gains) losses, net of tax expense (benefit):
Qualifying derivatives, net of tax	0	(69)	24	(62)
Equity investees' other comprehensive (income) loss, net of tax	0	0	1	(1)
Defined benefit plans:
Prior service costs, net of tax	0	0	1	1
Net actuarial (gain) loss, net of tax	34	31	97	94
Total other comprehensive income (loss)	20	(623)	275	(752)
Comprehensive income (loss)	375	(150)	1,325	685
LG And E And KU Energy LLC [Member]
Net Income	132	133	322	337
Defined benefit plans:
Net actuarial gain (loss), net of tax	(1)	0	(12)	1
Reclassifications from AOCI - (gains) losses, net of tax expense (benefit):
Equity investees' other comprehensive (income) loss, net of tax	0	0	1	(1)
Defined benefit plans:
Prior service costs, net of tax	0	0	1	1
Net actuarial (gain) loss, net of tax	1	1	3	3
Total other comprehensive income (loss)	0	1	(7)	4
Comprehensive income (loss)	$ 132	$ 134	$ 315	$ 341