CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Unaudited) (USD $) In Millions, except Share data in Thousands		Total	PPL Energy Supply [Member]	PPL Electric [Member]	LKE [Member] Successor [Member]	LKE [Member] Predecessor [Member]	LGE [Member]	LGE [Member] Successor [Member]	LGE [Member] Predecessor [Member]	KU [Member]	KU [Member] Successor [Member]	KU [Member] Predecessor [Member]	Common Stock		Common Stock PPL Electric [Member]		Common Stock LGE [Member] Successor [Member]		Common Stock LGE [Member] Predecessor [Member]		Common Stock KU [Member] Successor [Member]		Common Stock KU [Member] Predecessor [Member]		Preferred Securities PPL Electric [Member]	Additional Paid-in Capital	Additional Paid-in Capital PPL Electric [Member]	Additional Paid-in Capital LGE [Member] Successor [Member]	Additional Paid-in Capital LGE [Member] Predecessor [Member]	Additional Paid-in Capital KU [Member] Successor [Member]	Additional Paid-in Capital KU [Member] Predecessor [Member]	Earnings Reinvested		Earnings Reinvested PPL Electric [Member]		Earnings Reinvested LGE [Member] Successor [Member]		Earnings Reinvested LGE [Member] Predecessor [Member]		Earnings Reinvested KU [Member] Successor [Member]		Earnings Reinvested KU [Member] Predecessor [Member]		Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss LGE [Member] Successor [Member]	Accumulated Other Comprehensive Loss LGE [Member] Predecessor [Member]	Accumulated Other Comprehensive Loss KU [Member] Successor [Member]	Accumulated Other Comprehensive Loss KU [Member] Predecessor [Member]	Member's Equity PPL Energy Supply [Member]	Member's Equity LKE [Member] Successor [Member]		Member's Equity LKE [Member] Predecessor [Member]		Non-controlling Interests	Non-controlling Interests PPL Energy Supply [Member]	Non-controlling Interests LKE [Member] Successor [Member]	Non-controlling Interests LKE [Member] Predecessor [Member]
Balance at beginning of period at Mar. 31, 2010				$ 1,916					$ 1,255			$ 1,996			$ 364				$ 424				$ 308		$ 301		$ 824		$ 84		$ 316			$ 427				$ 758				$ 1,372				$ (11)		$ 0
Balance at beginning of period at Mar. 31, 2010		6,211											4													2,310						3,866												(288)										319
Balance at beginning of period - shares (a) at Mar. 31, 2010													378,131	[1]	66,368	[2]			21,294	[3]			37,818	[4]
Balance at beginning of period at Mar. 31, 2010			4,875			2,236																																											4,857			2,236			18		0
Common stock issued (b)	[5]	2,426											1													2,425
Common stock shares issued (a)(b)	[1][5]												104,057
Purchase Contracts	[6]	(186)																								(186)
Stock-based compensation		4																								4
Net income		92	86	23		32			14			31																				85		23	[7]			14	[8]			31	[9]						86			32	[10]	7
Dividends, dividend equivalents, redemptions and distributions - alternative		(191)																														(133)	[11]																					(58)
Cash dividends declared on preferred securities				(4)																														(4)
Cash dividends declared on common stock				(23)																														(23)
Distributions to member			(202)			(25)																																											(202)			(25)
Contributions from member																																																	3,525
Capital contributions from PPL				55																							55
Redemption Of Preferred Stock	[12]			(54)																					(51)									(3)
Other comprehensive income (loss)		(151)	(98)			(2)			(2)																																			(151)		(2)			(98)			(2)
Balance at end of period at Jun. 30, 2010				1,913					1,267			2,027			364				424				308		250		879		84		316			420				772				1,403				(13)		0
Balance at end of period at Jun. 30, 2010		8,205											5													4,553						3,818												(439)										268
Balance at end of period - shares (a) at Jun. 30, 2010													482,188	[1]	66,368	[2]			21,294	[3]			37,818	[4]
Balance at end of period at Jun. 30, 2010			8,186			2,241																																											8,168			2,241			18
Balance at beginning of period at Dec. 31, 2009				1,896					1,253			1,952			364				424				308		301		824		84		316			407				755				1,328				(10)		0
Balance at beginning of period at Dec. 31, 2009		5,815											4													2,280						3,749												(537)										319
Balance at beginning of period - shares (a) at Dec. 31, 2009													377,183	[1]	66,368	[2]			21,294	[3]			37,818	[4]
Balance at beginning of period at Dec. 31, 2009			4,586			2,224																																											4,568			2,192			18		32
Common stock issued (b)	[5]	2,459											1													2,458
Common stock shares issued (a)(b)	[1][5]												105,005
Purchase Contracts	[6]	(186)																								(186)
Stock-based compensation		1																								1
Net income		347	286	65		92			47			75																				335		65	[7]			47	[8]			75	[9]						286			92	[10]	12
Dividends, dividend equivalents, redemptions and distributions - alternative		(329)																														(266)	[11]																					(63)
Cash dividends declared on preferred securities				(9)																														(9)
Cash dividends declared on common stock				(40)					(30)																									(40)				(30)
Distributions to member			(364)			(31)																																											(364)			(31)
Contributions from member			3,525																																														3,525
Capital contributions from PPL				55																							55
Redemption Of Preferred Stock	[12]			(54)																					(51)									(3)
Disposal of discontinued operations						(43)																																														(11)					(32)
Other comprehensive income (loss)		98	153			(1)			(3)																																			98		(3)	(1)		153			(1)
Balance at end of period at Jun. 30, 2010				1,913					1,267			2,027			364				424				308		250		879		84		316			420				772				1,403				(13)		0
Balance at end of period at Jun. 30, 2010		8,205											5													4,553						3,818												(439)										268
Balance at end of period - shares (a) at Jun. 30, 2010													482,188	[1]	66,368	[2]			21,294	[3]			37,818	[4]
Balance at end of period at Jun. 30, 2010			8,186			2,241																																											8,168			2,241			18		0
Balance at beginning of period at Dec. 31, 2010		8,210													364		424				308				250		879	1,278		2,348				451		19				35					0		0
Balance at beginning of period at Dec. 31, 2010		8,478		1,944			1,721			2,691			5													4,602						4,082												(479)										268
Balance at beginning of period - shares (a) at Dec. 31, 2010		483,391		66,368			21,294			37,818			483,391		66,368	[2]	21,294	[3]
Balance at beginning of period at Dec. 31, 2010			4,509		4,011																																												4,491	4,011					18	0
Common stock issued (b)	[5]	2,313											1													2,312
Common stock shares issued (a)(b)	[1][5]												93,874
Purchase Contracts	[6]	(141)																								(141)
Stock-based compensation		1																								1
Net income		605	303	96	128			59			88																					597		96	[7]	59	[8]			88	[9]								303	128	[10]			8
Dividends, dividend equivalents and distributions (c)		(381)																														(373)	[11]																					(8)
Cash dividends declared on preferred securities				(8)																														(8)
Cash dividends declared on common stock				(52)				(42)			(68)																							(52)		(42)				(68)
Distributions to member			(134)		(146)																																												(134)	(146)
Distribution of membership interest in PPL Global	[13]		(1,288)																																														(1,288)
Contributions from member			168																																														168
Capital contributions from PPL				0
Other comprehensive income (loss)		44	(106)		(2)						(1)																																	44					(106)	(2)
Balance at end of period at Jun. 30, 2011		10,651													364		424				308				250		879	1,278		2,348				487		36				55					0		(1)
Balance at end of period at Jun. 30, 2011		10,919		1,980			1,738			2,710			6													6,774						4,306												(435)										268
Balance at end of period - shares (a) at Jun. 30, 2011		577,265		66,368			21,294			37,818			577,265	[1]	66,368	[2]	21,294	[3]
Balance at end of period at Jun. 30, 2011			3,452		3,991																																												3,434	3,991					18	0
Balance at beginning of period at Mar. 31, 2011				1,978				1,743			2,717				364		424				308				250		879	1,278		2,348				485		41				62					0		(1)
Balance at beginning of period at Mar. 31, 2011		8,798											5													4,637						4,312												(424)										268
Balance at beginning of period - shares (a) at Mar. 31, 2011													484,618	[1]	66,368	[2]	21,294	[3]			37,818	[4]
Balance at beginning of period at Mar. 31, 2011			3,334		4,042																																												3,316	4,042					18	0
Common stock issued (b)	[5]	2,274											1													2,273
Common stock shares issued (a)(b)	[1][5]												92,647
Purchase Contracts	[6]	(141)																								(141)
Stock-based compensation		5																								5
Net income		200	89	40	41			20			30																					196		40	[7]	20	[8]			30	[9]								89	41	[10]			4
Dividends, dividend equivalents and distributions (c)		(206)																														(202)	[11]																					(4)
Cash dividends declared on preferred securities				(4)																														(4)
Cash dividends declared on common stock				(34)				(25)			(37)																							(34)		(25)				(37)
Distributions to member			(53)		(92)																																													(92)
Distribution of membership interest in PPL Global																																																	(53)
Contributions from member			168																																														168
Other comprehensive income (loss)		(11)	(86)																																									(11)					(86)
Balance at end of period at Jun. 30, 2011		10,651													364		424				308				250		879	1,278		2,348				487		36				55					0		(1)
Balance at end of period at Jun. 30, 2011		10,919		1,980			1,738			2,710			6													6,774						4,306												(435)										268
Balance at end of period - shares (a) at Jun. 30, 2011		577,265		66,368			21,294			37,818			577,265	[1]	66,368	[2]	21,294	[3]
Balance at end of period at Jun. 30, 2011			$ 3,452		$ 3,991																																												$ 3,434	$ 3,991					$ 18	$ 0

[1] Shares in thousands. Each share entitles the holder to one vote on any question presented to 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 Louisville Gas and Electric stock are owned by LG&E and KU Energy.

[4] Shares in thousands. All common shares of Kentucky Utilities stock are owned by LG&E and KU Energy.

[5] The 2011 periods include the April issuance of 92 million shares of common stock. See Note 7 for additional information. The 2010 periods include the June issuance of 103.5 million shares of common stock. The 2011 and 2010 periods include shares of common stock issued through various stock and incentive compensation plans.

[6] The 2011 periods include $123 million for the 2011 Purchase Contracts and $18 million of related fees and expenses, net of tax. See Note 7 for additional information. The 2010 periods include $157 million for the 2010 Purchase Contracts and $29 million of related fees and expenses.

[7] PPL Electric's net income approximates comprehensive income.

[8] Louisville Gas and Electric's net income approximates comprehensive income.

[9] Kentucky Utilities' net income approximates comprehensive income.

[10] LG&E and KU Energy's net income approximates comprehensive income.

[11] "Earnings reinvested" includes dividends and dividend equivalents on PPL Corporation common stock and restricted stock units. "Noncontrolling interests" includes dividends, redemptions and distributions to noncontrolling interests, for which the 2010 periods include $54 million paid to redeem PPL Electric's preferred stock.

[12] In April 2010, PPL Electric redeemed all five series of its outstanding preferred stock.

[13] See Note 8 for additional information.