CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Net income	$ 1,827	$ 1,128	$ 1,902
Amounts arising during the period - gains (losses), net of tax (expense) benefit:
Foreign currency translation adjustments, net of tax	(444)	538	(1,107)
Qualifying derivatives, net of tax	36	(79)	91
Defined benefit plans:
Prior service costs, net of tax	(11)	0	(3)
Net actuarial gain (loss), net of tax	(187)	(308)	(61)
Reclassifications to net income - (gains) losses, net of tax expense (benefit):
Qualifying derivatives, net of tax	(29)	73	(91)
Equity investees' other comprehensive (income) loss, net of tax	0	1	(1)
Defined benefit plans:
Prior service costs, net of tax	2	1	1
Net actuarial (gain) loss, net of tax	142	130	121
Total other comprehensive income (loss)	(491)	356	(1,050)
Comprehensive income	1,336	1,484	852
LG And E And KU Energy LLC [Member]
Net income	445	316	429
Defined benefit plans:
Prior service costs, net of tax	0	(2)	0
Net actuarial gain (loss), net of tax	7	(23)	(27)
Reclassifications to net income - (gains) losses, net of tax expense (benefit):
Equity investees' other comprehensive (income) loss, net of tax	0	1	(1)
Defined benefit plans:
Prior service costs, net of tax	2	1	2
Net actuarial (gain) loss, net of tax	8	5	2
Total other comprehensive income (loss)	17	(18)	(24)
Comprehensive income	$ 462	$ 298	$ 405