CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net income	$ 1,746	$ 1,827	$ 1,128
Amounts arising during the period - gains (losses), net of tax (expense) benefit:
Foreign currency translation adjustments, net of tax	108	(444)	538
Qualifying derivatives, net of tax	(11)	36	(79)
Defined benefit plans:
Prior service costs, net of tax	(1)	(11)	0
Net actuarial gain (loss), net of tax	(592)	(187)	(308)
Reclassifications from AOCI - (gains) losses, net of tax expense (benefit):
Qualifying derivatives, net of tax	13	(29)	73
Equity investees' other comprehensive (income) loss, net of tax	0	0	1
Defined benefit plans:
Prior service costs, net of tax	2	2	1
Net actuarial (gain) loss, net of tax	87	142	130
Total other comprehensive income (loss)	(394)	(491)	356
Comprehensive income	1,352	1,336	1,484
LG And E And KU Energy LLC [Member]
Net income	468	445	316
Defined benefit plans:
Prior service costs, net of tax	(1)	0	(2)
Net actuarial gain (loss), net of tax	(6)	7	(23)
Reclassifications from AOCI - (gains) losses, net of tax expense (benefit):
Equity investees' other comprehensive (income) loss, net of tax	0	0	1
Defined benefit plans:
Prior service costs, net of tax	1	2	1
Net actuarial (gain) loss, net of tax	2	8	5
Total other comprehensive income (loss)	(4)	17	(18)
Comprehensive income	$ 464	$ 462	$ 298