CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Net income (loss)	$ 1,131		$ 1,531		$ 1,512
Amounts arising during the period - gains (losses), net of tax (expense) benefit:
Foreign currency translation adjustments, net of tax	138		94		(48)
Available-for-sale securities, net of tax	67		29		9
Qualifying derivatives, net of tax	45		39		202
Equity investees' other comprehensive income (loss), net of tax			2
Defined benefit plans:
Prior service costs, net of tax	2		1		(3)
Net actuarial gain (loss), net of tax	71		(965)		(152)
Reclassifications to net income - (gains) losses, net of tax expense (benefit):
Available-for-sale securities, net of tax	(6)		(7)		(7)
Qualifying derivatives, net of tax	(83)		(434)		(370)
Equity investee's other comprehensive (income) loss, net of tax					3
Defined benefit plans:
Prior service costs, net of tax	6		10		10
Net actuarial loss, net of tax	135		79		47
Total other comprehensive income (loss)	375		(1,152)		(309)
Comprehensive income (loss)	1,506		379		1,203
Comprehensive income attributable to noncontrolling interests	1		5		17
Comprehensive income (loss) attributable to Shareowners	1,505		374		1,186
PPL Energy Supply LLC [Member]
Net income (loss)	(229)		475		769
Amounts arising during the period - gains (losses), net of tax (expense) benefit:
Available-for-sale securities, net of tax	67		29		9
Qualifying derivatives, net of tax			68		267
Defined benefit plans:
Prior service costs, net of tax	2		1		(2)
Net actuarial gain (loss), net of tax	71		(82)		(22)
Reclassifications to net income - (gains) losses, net of tax expense (benefit):
Available-for-sale securities, net of tax	(6)		(7)		(7)
Qualifying derivatives, net of tax	(123)		(463)		(353)
Equity investee's other comprehensive (income) loss, net of tax					3
Defined benefit plans:
Prior service costs, net of tax	4		5		4
Net actuarial loss, net of tax	14		10		4
Total other comprehensive income (loss)	29		(439)		(97)
Comprehensive income (loss)	(200)		36		672
Comprehensive income attributable to noncontrolling interests	1		1		1
Comprehensive income (loss) attributable to Shareowners	(201)		35		671
PPL Electric Utilities Corp [Member]
Net income (loss)	209	[1]	136	[1]	189	[1]
LG And E And KU Energy LLC [Member]
Net income (loss)	347		219		265
Amounts arising during the period - gains (losses), net of tax (expense) benefit:
Equity investees' other comprehensive income (loss), net of tax			1
Defined benefit plans:
Prior service costs, net of tax					(2)
Net actuarial gain (loss), net of tax	28		(21)
Defined benefit plans:
Net actuarial loss, net of tax			1
Total other comprehensive income (loss)	28		(19)		(2)
Comprehensive income (loss) attributable to Shareowners	375		200		263
Louisville Gas And Electric Co [Member]
Net income (loss)	163		123		124
Kentucky Utilities Co [Member]
Net income (loss)	228		137		178
Defined benefit plans:
Total other comprehensive income (loss)			$ 1

[1] Net income approximates comprehensive income.