CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Unaudited) (USD $) In Millions, except Share data in Thousands		Total USD ($)	Common Stock USD ($)		Additional Paid-in Capital USD ($)	Earnings Reinvested USD ($)	Accumulated Other Comprehensive Loss USD ($)	Non-controlling Interests USD ($)	PPL Energy Supply LLC [Member] USD ($)	PPL Energy Supply LLC [Member] Common Stock		PPL Energy Supply LLC [Member] Members Equity [Member] USD ($)	PPL Energy Supply LLC [Member] Non-controlling Interests USD ($)	PPL Electric Utilities Corp [Member] USD ($)		PPL Electric Utilities Corp [Member] Common Stock USD ($)		PPL Electric Utilities Corp [Member] Additional Paid-in Capital USD ($)	PPL Electric Utilities Corp [Member] Earnings Reinvested USD ($)	LG And E And KU Energy LLC [Member] USD ($)		LG And E And KU Energy LLC [Member] Members Equity [Member] USD ($)	Louisville Gas And Electric Co [Member] USD ($)		Louisville Gas And Electric Co [Member] Common Stock USD ($)		Louisville Gas And Electric Co [Member] Additional Paid-in Capital USD ($)	Louisville Gas And Electric Co [Member] Earnings Reinvested USD ($)	Kentucky Utilities Co [Member] USD ($)		Kentucky Utilities Co [Member] Common Stock USD ($)		Kentucky Utilities Co [Member] Additional Paid-in Capital USD ($)	Kentucky Utilities Co [Member] Earnings Reinvested USD ($)	Kentucky Utilities Co [Member] Accumulated Other Comprehensive Loss USD ($)	Kentucky Utilities Co [Member] Members Equity [Member] USD ($)
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	$ 1
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	[2]								21,294	[3]					37,818	[4]
Balance at beginning of period at Dec. 31, 2012									3,848			3,830	18
Common stock shares issued	[1],[5]		1,270
Common stock issued	[5]	37			37
Stock-based compensation	[6]	15			15
Net income (loss)		413				413			(38)			(38)		64	[7]				64	96	[7]		44	[8]				44	64	[7]				64
Dividends, dividend equivalents and distributions	[9]	(215)				(215)
Cash dividends declared on common stock														(25)					(25)				(19)					(19)	(13)					(13)
Distributions to member									(313)			(313)										(4)
Contributions from member																						75
Capital Contributions From Parent														60				60					25				25		50				50
Other comprehensive income (loss)		(206)					(206)		(3)			(3)								(1)
Balance at end of period at Mar. 31, 2013														2,161		364		1,195	602				1,860		424		1,303	133	2,884		308		2,398	177	1
Balance at end of period at Mar. 31, 2013		10,542	6		6,988	5,676	(2,146)	18
Balance at end of period at Mar. 31, 2013																				3,952
Balance at end of period - shares at Mar. 31, 2013			583,214	[1]												66,368	[2]								21,294	[3]					37,818	[4]
Balance at end of period at Mar. 31, 2013									3,494			3,476	18
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	[2]			66,368									21,294		21,294	[3]			37,818		37,818	[4]
Balance at beginning of period at Dec. 31, 2013												4,798
Common stock shares issued	[1],[5]		1,096
Common stock issued	[5]	30			30
Stock-based compensation	[6]	6			6
Net income (loss)		316				316			(66)			(66)		85	[7]				85	115	[7]		52	[8]				52	77	[7]				77
Dividends, dividend equivalents and distributions	[9]	(237)				(237)
Cash dividends declared on common stock														(32)					(32)				(27)					(27)	(37)					(37)
Distributions to member									(654)			(654)										(104)
Contributions from member																						40
Capital Contributions From Parent														65				65											40				40
Other comprehensive income (loss)		136					136		1			1								(1)									(1)						(1)
Balance at end of period at Mar. 31, 2014		12,717												2,467		364		1,405	698				1,985		424		1,364	197	3,123		308		2,545	270
Balance at end of period at Mar. 31, 2014			6		8,352	5,788	(1,429)
Balance at end of period at Mar. 31, 2014									4,079											4,200
Balance at end of period - shares at Mar. 31, 2014		631,417	631,417	[1]										66,368		66,368	[2]						21,294		21,294	[3]			37,818		37,818	[4]
Balance at end of period at Mar. 31, 2014												$ 4,079

[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 PPL Electric stock are owned by PPL.

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

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

[5] Each period includes shares of common stock issued through various stock and incentive compensation plans.

[6] The three months ended March 31, 2014 and 2013 include $27 million and $28 million of stock-based compensation expense related to new and existing unvested equity awards. These periods also include $(21) million and $(13) million related primarily to the reclassification from "Stock-based compensation" to "Common stock issued" for the issuance of common stock after applicable equity award vesting periods and tax adjustments related to stock-based compensation.

[7] Net income approximates comprehensive income.

[8] Net income equals comprehensive income.

[9] "Earnings reinvested" includes dividends and dividend equivalents on PPL common stock and restricted stock units.