CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Unaudited) (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] Preference Stock	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 Mar. 31, 2011		$ 8,798	$ 5		$ 4,637	$ 4,312	$ (424)	$ 268
Balance at beginning of period at Mar. 31, 2011												1,978		364		250	879	485			1,743		424		1,278	41	2,717		308	2,348	62	(1)
Balance at beginning of period - shares at Mar. 31, 2011			484,618	[1]										66,368	[2]								21,294	[3]					37,818
Balance at beginning of period at Mar. 31, 2011																			4,042
Balance at beginning of period at Mar. 31, 2011									3,334	3,316	18
Common stock shares issued	[1],[4]		92,647
Common stock issued	[4]	2,274	1		2,273
Purchase Contracts	[5]	(141)			(141)
Stock-based compensation	[6]	5			5
Net income		200				196		4	89	89		40	[7]					40	41	[7]	20	[7]				20	30	[7]			30
Dividends, dividend equivalents, redemptions and distributions	[8]	(206)				(202)		(4)
Cash dividends declared on preference stock												(4)						(4)
Cash dividends declared on common stock												(34)						(34)			(25)					(25)	(37)				(37)
Distributions to member									(53)	(53)									(92)
Contributions from member									168	168
Other comprehensive income (loss)		(11)					(11)		(86)	(86)
Balance at end of period at Jun. 30, 2011		10,919	6		6,774	4,306	(435)	268
Balance at end of period at Jun. 30, 2011												1,980		364		250	879	487			1,738		424		1,278	36	2,710		308	2,348	55
Balance at end of period - shares at Jun. 30, 2011			577,265	[1]										66,368	[2]								21,294	[3]					37,818
Balance at end of period at Jun. 30, 2011																			3,991
Balance at end of period at Jun. 30, 2011									3,452	3,434	18
Balance at beginning of period at Dec. 31, 2010		8,478	5		4,602	4,082	(479)	268
Balance at beginning of period at Dec. 31, 2010												1,944		364		250	879	451			1,721		424		1,278	19	2,691		308	2,348	35
Balance at beginning of period - shares at Dec. 31, 2010			483,391	[1]										66,368	[2]								21,294	[3]					37,818
Balance at beginning of period at Dec. 31, 2010																			4,011
Balance at beginning of period at Dec. 31, 2010									4,509	4,491	18
Common stock shares issued	[1],[4]		93,874
Common stock issued	[4]	2,313	1		2,312
Purchase Contracts	[5]	(141)			(141)
Stock-based compensation	[6]	1			1
Net income		605				597		8	303	303		96	[7]					96	128	[7]	59	[7]				59	88	[7]			88
Dividends, dividend equivalents, redemptions and distributions	[8]	(381)				(373)		(8)
Cash dividends declared on preference stock												(8)						(8)
Cash dividends declared on common stock												(52)						(52)			(42)					(42)	(68)				(68)
Distributions to member									(134)	(134)									(146)
Distribution of membership interest in PPL Global	[9]								(1,288)	(1,288)
Contributions from member									168	168
Other comprehensive income (loss)		44					44		(106)	(106)									(2)								(1)					(1)
Balance at end of period at Jun. 30, 2011		10,919	6		6,774	4,306	(435)	268
Balance at end of period at Jun. 30, 2011												1,980		364		250	879	487			1,738		424		1,278	36	2,710		308	2,348	55	(1)
Balance at end of period - shares at Jun. 30, 2011			577,265	[1]										66,368	[2]								21,294	[3]					37,818
Balance at end of period at Jun. 30, 2011																			3,991
Balance at end of period at Jun. 30, 2011									3,452	3,434	18
Balance at beginning of period at Dec. 31, 2011		11,096	6		6,813	4,797	(788)	268
Balance at beginning of period at Dec. 31, 2011		10,828										2,125		364		250	979	532			1,762		424		1,278	60	2,745		308	2,348	89
Balance at beginning of period - shares at Dec. 31, 2011		578,405	578,405	[1]								66,368		66,368	[2]						21,294		21,294	[3]			37,818
Balance at beginning of period at Dec. 31, 2011									4,019										3,741
Balance at beginning of period at Dec. 31, 2011									4,037	4,019	18
Common stock shares issued	[1],[4]		1,808
Common stock issued	[4]	50			50
Stock-based compensation	[6]	23			23
Net income		816				812		4	328	328		66	[7]					66	97	[7]	51	[7]				51	68	[7]			68
Dividends, dividend equivalents and distributions	[8]	(673)				(419)		(254)
Cash dividends declared on preference stock												(4)						(4)
Cash dividends declared on common stock												(56)						(56)			(31)					(31)	(48)				(48)
Distributions to member									(657)	(657)									(60)
Contributions from member									472	472
Redemption of preferred stock	[10]											(250)				(250)
Other comprehensive income (loss)		(332)					(332)		(180)	(180)									(4)								(4)					(4)
Balance at end of period at Jun. 30, 2012		10,980	6		6,886	5,190	(1,120)	18
Balance at end of period at Jun. 30, 2012		10,962										1,881		364		0	979	538			1,782		424		1,278	80	2,761		308	2,348	109	(4)
Balance at end of period - shares at Jun. 30, 2012		580,213										66,368									21,294						37,818
Balance at end of period at Jun. 30, 2012									3,982										3,774
Balance at end of period at Jun. 30, 2012									4,000	3,982	18
Balance at beginning of period at Mar. 31, 2012		11,535	6		6,862	5,129	(730)	268
Balance at beginning of period at Mar. 31, 2012												2,123		364		250	979	530			1,772		424		1,278	70	2,755		308	2,348	103	(4)
Balance at beginning of period - shares at Mar. 31, 2012			579,520	[1]										66,368	[2]								21,294	[3]			37,818
Balance at beginning of period at Mar. 31, 2012																			3,765
Balance at beginning of period at Mar. 31, 2012									3,731	3,713	18
Common stock shares issued	[1],[4]		693
Common stock issued	[4]	18			18
Stock-based compensation	[6]	6			6
Net income		271				271			19	19		29	[7]					29	44	[7]	26	[7]				26	30	[7]			30
Dividends, dividend equivalents and distributions	[8]	(460)				(210)		(250)
Cash dividends declared on common stock												(21)						(21)			(16)					(16)	(24)				(24)
Distributions to member									(100)	(100)									(35)
Contributions from member									472	472
Redemption of preferred stock	[10]											(250)				(250)
Other comprehensive income (loss)		(390)					(390)		(122)	(122)
Balance at end of period at Jun. 30, 2012		10,980	6		6,886	5,190	(1,120)	18
Balance at end of period at Jun. 30, 2012		10,962										1,881		364		0	979	538			1,782		424		1,278	80	2,761		308	2,348	109
Balance at end of period - shares at Jun. 30, 2012		580,213										66,368									21,294						37,818
Balance at end of period at Jun. 30, 2012									3,982										3,774
Balance at end of period at Jun. 30, 2012									$ 4,000	$ 3,982	$ 18

[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 LG&E stock are owned by LKE.

[4] Each period includes shares of common stock issued through various stock and incentive compensation plans. The 2011 periods include the April issuance of 92 million shares of common stock.

[5] The 2011 periods include $123 million for the 2011 Purchase Contracts and $18 million of related fees and expenses, net of tax.

[6] The three and six months ended June 30, 2012 include $6 million and $35 million and the three and six months ended June 30, 2011 include $5 million and $22 million of stock-based compensation expense related to new and existing unvested equity awards. The six months ended June 30, 2012 and 2011 include $(12) million and $(21) 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] "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. In June 2012, PPL Electric redeemed all of its outstanding preference stock at par value, $250 million in the aggregate. See Note 7 for additional information.

[9] In January 2011, PPL Energy Supply distributed its entire membership interest in PPL Global to PPL Energy Supply's parent, PPL Energy Funding. The distribution was made based on the book value of the assets and liabilities of PPL Global with financial effect as of January 1, 2011, and no gains or losses were recognized on the distribution.

[10] In June 2012, PPL Electric redeemed all of its outstanding preference stock. See Note 7 for additional information.