CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Net income (loss)	$ 229		$ 405		$ 545		$ 818
Amounts arising during the period - gains (losses), net of tax (expense) benefit:
Foreign currency translation adjustments, net of tax	(3)		(7)		128		(252)
Available-for-sale securities, net of tax	14		2		19		25
Qualifying derivatives, net of tax	(1)		24		(47)		86
Defined benefit plans:
Net actuarial gain (loss), net of tax	(2)				(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	(5)		(36)		14		(116)
Defined benefit plans:
Prior service costs, net of tax	1		2		2		3
Net actuarial loss, net of tax	28		34		55		68
Total other comprehensive income (loss)	31		18		167		(188)
Comprehensive income (loss) attributable to Shareowners	260		423		712		630
PPL Energy Supply LLC [Member]
Net income (loss)	13		86		(53)		48
Amounts arising during the period - gains (losses), net of tax (expense) benefit:
Available-for-sale securities, net of tax	14		2		19		25
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	(8)		(37)		(13)		(67)
Defined benefit plans:
Prior service costs, net of tax			1		1		2
Net actuarial loss, net of tax	2		4		3		8
Total other comprehensive income (loss)	7		(31)		8		(34)
Comprehensive income (loss) attributable to Shareowners	20		55		(45)		14
PPL Electric Utilities Corp [Member]
Net income (loss)	52	[1]	45	[1]	137	[1]	109	[1]
LG And E And KU Energy LLC [Member]
Net income (loss)	65	[1]	64	[1]	180	[1]	160	[1]
Defined benefit plans:
Total other comprehensive income (loss)	(2)				(3)		(1)
Louisville Gas And Electric Co [Member]
Net income (loss)	35	[2]	29	[2]	87	[2]	73	[2]
Kentucky Utilities Co [Member]
Net income (loss)	40	[1]	44	[1]	117	[1]	108	[1]
Defined benefit plans:
Total other comprehensive income (loss)					$ (1)

[1] Net income approximates comprehensive income.

[2] Net income equals comprehensive income.