CONSOLIDATED STATEMENTS OF EQUITY (USD $) In Millions, except Share data in Thousands		Total		Common Stock		Additional Paid-in Capital	Earnings Reinvested	Accumulated Other Comprehensive Loss	Non-controlling Interests	PPL Energy Supply LLC [Member]	PPL Energy Supply LLC [Member] Member's Equity	PPL Energy Supply LLC [Member] Non-controlling Interests	PPL Electric Utilities Corp [Member]		PPL Electric Utilities Corp [Member] Common Stock	PPL Electric Utilities Corp [Member] Preferred Securities	PPL Electric Utilities Corp [Member] Additional Paid-in Capital	PPL Electric Utilities Corp [Member] Earnings Reinvested	LG And E And KU Energy LLC [Member]	Louisville Gas And Electric Co [Member]		Louisville Gas And Electric Co [Member] Common Stock		Louisville Gas And Electric Co [Member] Additional Paid-in Capital	Louisville Gas And Electric Co [Member] Earnings Reinvested	Kentucky Utilities Co [Member]		Kentucky Utilities Co [Member] Common Stock		Kentucky Utilities Co [Member] Additional Paid-in Capital	Kentucky Utilities Co [Member] Earnings Reinvested	Kentucky Utilities Co [Member] Accumulated Other Comprehensive Loss
Balance at beginning of period at Dec. 31, 2011													$ 2,125		$ 364	$ 250	$ 979	$ 532		$ 1,762		$ 424		$ 1,278	$ 60	$ 2,745		$ 308		$ 2,348	$ 89
Balance at beginning of period at Dec. 31, 2011		11,096		6		6,813	4,797	(788)	268
Balance at beginning of period - shares at Dec. 31, 2011				578,405	[1]										66,368							21,294	[2]					37,818	[3]
Balance at beginning of period at Dec. 31, 2011										4,037	4,019	18							3,741
Common stock shares issued	[1]			3,543
Common stock issued		99				99
Common stock shares repurchased				4
Stock-based compensation		18				18
Net income (loss)		1,531					1,526		5	475	474	1	136	[4]				136	219	123	[5]				123	137	[4]				137
Dividends, dividend equivalents, redemptions and distributions		(1,094)				(6)	(845)		(255)
Cash dividends declared on preference stock													(4)					(4)
Cash dividends declared on common stock													(95)					(95)		(75)					(75)	(100)					(100)
Distributions to member										(788)	(787)	(1)							(155)
Contributions from member										563	563
Capital contributions from parent													150				150
Redemption of preference stock													(250)			(250)	6	(6)
Other comprehensive income (loss)		(1,152)						(1,152)		(439)	(439)								(19)							1						1
Balance at end of period at Dec. 31, 2012													2,062		364		1,135	563		1,810		424			108	2,783		308			126	1
Balance at end of period at Dec. 31, 2012		10,498		6		6,936	5,478	(1,940)	18
Balance at end of period at Dec. 31, 2012																			3,786
Balance at end of period - shares at Dec. 31, 2012				581,944	[1]										66,368							21,294	[2]					37,818	[3]
Balance at end of period at Dec. 31, 2012										3,848	3,830	18
Net income (loss)		413	[6]										64	[7]
Balance at end of period at Mar. 31, 2013
Balance at beginning of period at Dec. 31, 2012													2,062		364		1,135	563		1,810		424		1,278	108	2,783		308		2,348	126
Balance at beginning of period at Dec. 31, 2012		10,498		6		6,936	5,478	(1,940)	18
Balance at beginning of period at Dec. 31, 2012																			3,786
Balance at beginning of period - shares at Dec. 31, 2012				581,944	[1]										66,368							21,294	[2]					37,818	[3]
Balance at beginning of period at Dec. 31, 2012										3,848	3,830	18
Common stock shares issued	[1]			50,807
Common stock issued		1,437				1,437
Common stock shares repurchased	[1]			2,430
Common stock repurchased		74				74
Cash settlement of equity forward agreements		(13)				(13)
Stock-based compensation		30				30
Net income (loss)		1,131					1,130		1	(229)	(230)	1	209	[4]				209	347	163	[5]				163	228	[4]				228
Dividends, dividend equivalents, redemptions and distributions		(918)					(899)		(19)
Cash dividends declared on common stock													(127)					(127)		(99)					(99)	(124)					(124)
Distributions to member										(427)	(408)	(19)							(254)
Contributions from member										1,577	1,577								243
Capital contributions from parent													205				205			86				86		157				157
Other comprehensive income (loss)		375						375		29	29								28
Balance at end of period at Dec. 31, 2013		12,466											2,349		364		1,340	645		1,960		424		1,364	172	3,044		308		2,505	230
Balance at end of period at Dec. 31, 2013				6		8,316	5,709	(1,565)
Balance at end of period at Dec. 31, 2013										4,798									4,150
Balance at end of period - shares at Dec. 31, 2013		630,321		630,321	[1]								66,368	[8]	66,368					21,294		21,294	[2]			37,818		37,818	[3]
Balance at end of period at Dec. 31, 2013											4,798
Balance at beginning of period at Sep. 30, 2013
Net income (loss)		(98)	[6],[9]										49	[7]
Balance at end of period at Dec. 31, 2013		12,466											2,349		364							424						308
Balance at end of period - shares at Dec. 31, 2013		630,321											66,368	[8]	66,368							21,294	[2]					37,818	[3]
Net income (loss)		316	[6]										85	[7]
Balance at end of period at Mar. 31, 2014
Balance at beginning of period at Dec. 31, 2013		12,466											2,349		364		1,340	645		1,960		424		1,364	172	3,044		308		2,505	230	1
Balance at beginning of period at Dec. 31, 2013				6		8,316	5,709	(1,565)
Balance at beginning of period at Dec. 31, 2013										4,798									4,150
Balance at beginning of period - shares at Dec. 31, 2013		630,321		630,321	[1]								66,368	[8]	66,368					21,294		21,294	[2]			37,818		37,818	[3]
Balance at beginning of period at Dec. 31, 2013											4,798
Common stock shares issued				35,528
Common stock issued		1,090		1		1,089
Stock-based compensation		28				28
Net income (loss)		1,737					1,737			410	410		263	[4]				263	344	169	[5]				169	220	[4]				220
Dividends, dividend equivalents, redemptions and distributions		984					984
Cash dividends declared on common stock													(158)					(158)		(112)					(112)	(148)					(148)
Distributions to member										(1,940)	(1,940)								(436)
Contributions from member										739	739								248
Capital contributions from parent													263				263			157				157		91				91
Other comprehensive income (loss)		(709)						(709)		(100)	(100)								(58)							(1)						(1)
Balance at end of period at Dec. 31, 2014		13,628											2,717		364		1,603	750		2,174		424		1,521	229	3,206		308		2,596	302
Balance at end of period at Dec. 31, 2014				7		9,433	6,462	(2,274)
Balance at end of period at Dec. 31, 2014										3,907									4,248
Balance at end of period - shares at Dec. 31, 2014		665,849		665,849	[1]								66,368	[8]	66,368					21,294		21,294	[2]			37,818		37,818	[3]
Balance at end of period at Dec. 31, 2014											3,907
Balance at beginning of period at Sep. 30, 2014
Net income (loss)		695	[10],[6]										69	[7]
Balance at end of period at Dec. 31, 2014		$ 13,628											$ 2,717		$ 364							$ 424						$ 308
Balance at end of period - shares at Dec. 31, 2014		665,849											66,368	[8]	66,368							21,294	[2]					37,818	[3]

[1] Shares in thousands. Each share entitles the holder to one vote on any question presented at any shareowners' meeting.

[2] Shares in thousands. All common shares of LG&E stock are owned by LKE.

[3] Shares in thousands. All common shares of KU stock are owned by LKE.

[4] Net income approximates comprehensive income.

[5] Net income equals comprehensive income.

[6] Quarterly results can vary depending on, among other things, weather and the forward pricing of power. Accordingly, comparisons among quarters of a year may not be indicative of overall trends and changes in operations.

[7] PPL Electric's business is seasonal in nature, with peak sales periods generally occurring in the winter and summer months. Accordingly, comparisons among quarters of a year may not be indicative of overall trends and changes in operations.

[8] Shares in thousands. All common shares of PPL Electric stock are owned by PPL.

[9] Fourth quarter of 2013 includes a charge for the termination of the lease of the Colstrip coal-fired electric generating facility in Montana. See Note 8 to the Financial Statements for additional information.

[10] Fourth quarter of 2014 includes a gain of $137 million (after tax) from the sale of hydroelectric generating facilities of PPL Montana. See Note 8 to the Financial Statements for additional information.