CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Net income (loss)		$ (757)	$ 229	$ (110)	$ 545
Amounts arising during the period - gains (losses), net of tax (expense) benefit:
Foreign currency translation adjustments, net of tax		(83)	(3)	(149)	128
Available-for-sale securities, net of tax		2	14	7	19
Qualifying derivatives, net of tax		21	(1)	27	(47)
Defined benefit plans:
Prior service costs, net of tax		(6)	0	(6)	0
Net actuarial gain (loss), net of tax		53	(2)	52	(2)
Reclassifications from accumulated other comprehensive income (loss) - (gains) losses, net of tax expense (benefit):
Available-for-sale securities, net of tax		(1)	(1)	(2)	(2)
Qualifying derivatives, net of tax		27	(5)	10	14
Equity investee's other comprehensive (income) loss, net of tax		0	0	(1)	0
Defined benefit plans:
Prior service costs, net of tax		0	1	0	2
Net actuarial loss, net of tax		38	28	76	55
Total other comprehensive income (loss)		51	31	14	167
Comprehensive income (loss)		(706)	260	(96)	712
PPL Electric Utilities Corp [Member]
Net income (loss)	[1]	49	52	136	137
LG And E And KU Energy LLC [Member]
Net income (loss)		60	65	177	180
Defined benefit plans:
Net actuarial gain (loss), net of tax		(8)	(2)	(8)	(2)
Reclassifications from accumulated other comprehensive income (loss) - (gains) losses, net of tax expense (benefit):
Equity investee's other comprehensive (income) loss, net of tax		0	0	(1)	(1)
Defined benefit plans:
Prior service costs, net of tax		1	0	1	0
Net actuarial loss, net of tax		0	0	1	0
Total other comprehensive income (loss)		(7)	(2)	(7)	(3)
Comprehensive income (loss)		53	63	170	177
Louisville Gas And Electric Co [Member]
Net income (loss)	[2]	35	35	88	87
Kentucky Utilities Co [Member]
Net income (loss)	[1]	$ 39	$ 40	117	117
Defined benefit plans:
Total other comprehensive income (loss)				$ (1)	$ (1)

[1] Net income approximates comprehensive income.

[2] Net income equals comprehensive income.