CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Net income (loss)	$ 497		$ 411		$ 1,042		$ 1,229
Amounts arising during the period - gains (losses), net of tax (expense) benefit:
Foreign currency translation adjustments, net of tax	(48)		87		80		(165)
Available-for-sale securities, net of tax	(1)		15		18		40
Qualifying derivatives, net of tax	(5)		(9)		(52)		77
Defined benefit plans:
Net actuarial gain (loss), net of tax	(1)		0		(3)		0
Reclassifications from accumulated other comprehensive income (loss) - (gains) losses, net of tax expense (benefit):
Available-for-sale securities, net of tax	(3)		0		(5)		(2)
Qualifying derivatives, net of tax	(12)		(6)		2		(122)
Equity investee's other comprehensive (income) loss, net of tax	0		(1)		0		(1)
Defined benefit plans:
Prior service costs, net of tax	1		2		3		5
Net actuarial loss, net of tax	29		33		84		101
Total other comprehensive income (loss)	(40)		121		127		(67)
Comprehensive income (loss)	457		532		1,169		1,162
Comprehensive income attributable to noncontrolling interests	0		1		0		1
Comprehensive income (loss) attributable to Shareowners	457		531		1,169		1,161
PPL Energy Supply LLC [Member]
Net income (loss)	101		125		48		173
Amounts arising during the period - gains (losses), net of tax (expense) benefit:
Available-for-sale securities, net of tax	(1)		15		18		40
Reclassifications from accumulated other comprehensive income (loss) - (gains) losses, net of tax expense (benefit):
Available-for-sale securities, net of tax	(3)		0		(5)		(2)
Qualifying derivatives, net of tax	(5)		(29)		(18)		(96)
Defined benefit plans:
Prior service costs, net of tax	1		1		2		3
Net actuarial loss, net of tax	1		3		4		11
Total other comprehensive income (loss)	(7)		(10)		1		(44)
Comprehensive income (loss)	94		115		49		129
Comprehensive income attributable to noncontrolling interests	0		1		0		1
Comprehensive income (loss) attributable to Shareowners	94		114		49		128
PPL Electric Utilities Corp [Member]
Net income (loss)	57	[1]	51	[1]	194	[1]	160	[1]
LG And E And KU Energy LLC [Member]
Net income (loss)	91	[1]	100	[1]	271	[1]	260	[1]
Defined benefit plans:
Total other comprehensive income (loss)					(3)		(1)
Louisville Gas And Electric Co [Member]
Net income (loss)	46	[2]	49	[2]	133	[2]	122	[2]
Kentucky Utilities Co [Member]
Net income (loss)	56	[1]	63	[1]	173	[1]	171	[1]
Defined benefit plans:
Total other comprehensive income (loss)					$ (1)

[1] Net income approximates comprehensive income.

[2] Net income equals comprehensive income.