CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Net income		$ 682	$ 1,737	$ 1,130
Amounts arising during the period - gains (losses), net of tax (expense) benefit:
Foreign currency translation adjustments, net of tax		(234)	(275)	138
Available-for-sale securities, net of tax		8	35	67
Qualifying derivatives, net of tax		26	(10)	45
Defined benefit plans:
Prior service costs, net of tax		(9)	5	2
Net actuarial gain (loss), net of tax		(366)	(509)	71
Reclassifications to net income - (gains) losses, net of tax expense (benefit):
Available-for-sale securities, net of tax		(2)	(6)	(6)
Qualifying derivatives, net of tax		2	(64)	(83)
Equity investee's other comprehensive (income) loss, net of tax		1	0	0
Defined benefit plans:
Prior service costs, net of tax		0	4	6
Net actuarial loss, net of tax		146	111	135
Total other comprehensive income (loss)		(430)	(709)	375
Comprehensive income (loss)		252	1,028	1,505
PPL Electric Utilities Corp [Member]
Net income	[1]	252	263	209
LG And E And KU Energy LLC [Member]
Net income		364	344	347
Defined benefit plans:
Prior service costs, net of tax		(3)	(7)	0
Net actuarial gain (loss), net of tax		(4)	(50)	28
Reclassifications to net income - (gains) losses, net of tax expense (benefit):
Equity investee's other comprehensive (income) loss, net of tax		0	(1)	0
Defined benefit plans:
Prior service costs, net of tax		1	1	0
Net actuarial loss, net of tax		5	(1)	0
Total other comprehensive income (loss)		(1)	(58)	28
Comprehensive income (loss)		363	286	375
Louisville Gas And Electric Co [Member]
Net income	[2]	185	169	163
Kentucky Utilities Co [Member]
Net income	[1]	$ 234	220	$ 228
Defined benefit plans:
Total other comprehensive income (loss)			$ (1)

[1] Net income approximates comprehensive income.

[2] Net income equals comprehensive income.