CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Unaudited) - USD ($) shares in Thousands, $ in Millions		Total	Common Stock		Additional Paid-in Capital	Earnings Reinvested	Accumulated Other Comprehensive Loss	PPL Electric Utilities Corp [Member]		PPL Electric Utilities Corp [Member] Common 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 - shares at Dec. 31, 2013			630,321	[1]						66,368	[2]							21,294	[3]					37,818	[4]
Balance at beginning of period at Dec. 31, 2013															$ 4,150
Balance at beginning of period at Dec. 31, 2013		$ 12,466	$ 6		$ 8,316	$ 5,709	$ (1,565)	$ 2,349		$ 364		$ 1,340		$ 645		$ 1,960		$ 424		$ 1,364	$ 172	$ 3,044		$ 308		$ 2,505	$ 230	$ 1
Common stock shares issued	[1]		34,332
Common stock issued		1,049	$ 1		1,048
Stock-based compensation		24			24
Net income		1,042				1,042		194	[5]					194	271	133	[6]				133	173	[5]				173
Dividends, dividend equivalents, redemptions and distributions		(734)				(734)
Dividends declared on common stock								(121)						(121)		(83)					(83)	(112)					(112)
Distributions to member															(327)
Contributions from member															139
Capital contributions from parent								95				95				73				73		66				66
Other comprehensive income (loss)		127					127								(3)							(1)						(1)
Balance at end of period - shares at Sep. 30, 2014			664,653	[1]						66,368	[2]							21,294	[3]					37,818	[4]
Balance at end of period at Sep. 30, 2014															4,230
Balance at end of period at Sep. 30, 2014		13,974	$ 7		9,388	6,017	(1,438)	2,517		$ 364		1,435		718		2,083		$ 424		1,437	222	3,170		$ 308		2,571	291	0
Balance at beginning of period - shares at Jun. 30, 2014			664,018	[1]						66,368	[2]							21,294	[3]					37,818	[4]
Balance at beginning of period at Jun. 30, 2014															4,225
Balance at beginning of period at Jun. 30, 2014		13,735	$ 7		9,358	5,768	(1,398)	2,494		$ 364		1,435		695		2,040		$ 424		1,417	199	3,140		$ 308		2,571	261
Common stock shares issued	[1]		635
Common stock issued		21	$ 0		21
Stock-based compensation		9			9
Net income		497				497		57	[5]					57	91	46	[6]				46	56	[5]				56
Dividends, dividend equivalents, redemptions and distributions		(248)				(248)
Dividends declared on common stock								(34)						(34)		(23)					(23)	(26)					(26)
Distributions to member															(106)
Contributions from member															20
Capital contributions from parent								0				0				20				20
Other comprehensive income (loss)		(40)					(40)								0
Balance at end of period - shares at Sep. 30, 2014			664,653	[1]						66,368	[2]							21,294	[3]					37,818	[4]
Balance at end of period at Sep. 30, 2014															4,230
Balance at end of period at Sep. 30, 2014		$ 13,974	$ 7		9,388	6,017	(1,438)	$ 2,517		$ 364		1,435		718		$ 2,083		$ 424		1,437	222	$ 3,170		$ 308		2,571	291	0
Balance at beginning of period - shares at Dec. 31, 2014		665,849	665,849	[1]				66,368		66,368	[2]					21,294		21,294	[3]			37,818		37,818	[4]
Balance at beginning of period at Dec. 31, 2014															4,248
Balance at beginning of period at Dec. 31, 2014		$ 13,628	$ 7		9,433	6,462	(2,274)	$ 2,717		$ 364		1,603		750		$ 2,174		$ 424		1,521	229	$ 3,206		$ 308		2,596	302	0
Common stock shares issued	[1]		5,943
Common stock issued		183	$ 0		183
Stock-based compensation		14			14
Net income		283				283		191	[5]					191	297	146	[6]				146	189	[5]				189
Dividends, dividend equivalents, redemptions and distributions		(754)				(754)
Dividends declared on common stock								(140)						(140)		(81)					(81)	(106)					(106)
Distributions to member															(157)
Contributions from member															55
Capital contributions from parent								$ 322	[7]			322	[7]			$ 20				20
Distribution of PPL Energy Supply		(3,224)				(3,200)	(24)
Other comprehensive income (loss)		$ 92					92								(6)							$ (1)						(1)
Balance at end of period - shares at Sep. 30, 2015		671,792	671,792	[1]				66,368		66,368	[2]					21,294		21,294	[3]			37,818		37,818	[4]
Balance at end of period at Sep. 30, 2015															4,437
Balance at end of period at Sep. 30, 2015		$ 10,222	$ 7		9,630	2,791	(2,206)	$ 3,090		$ 364		1,925		801		$ 2,259		$ 424		1,541	294	$ 3,288		$ 308		2,596	385	(1)
Balance at beginning of period - shares at Jun. 30, 2015			669,514	[1]						66,368	[2]							21,294	[3]					37,818	[4]
Balance at beginning of period at Jun. 30, 2015															4,329
Balance at beginning of period at Jun. 30, 2015		9,941	$ 7		9,564	2,654	(2,284)	2,953		$ 364		1,810		779		2,224		$ 424		1,541	259	3,241		$ 308		2,596	338	(1)
Common stock shares issued	[1]		2,278
Common stock issued		72	$ 0		72
Stock-based compensation		(6)			(6)
Net income		393				393		55	[5]					55	120	58	[6]				58	72	[5]				72
Dividends, dividend equivalents, redemptions and distributions		(256)				(256)
Dividends declared on common stock								(33)						(33)		$ (23)					(23)	$ (25)					(25)
Distributions to member															(48)
Contributions from member															35
Capital contributions from parent								$ 115				115
Distribution of PPL Energy Supply		0				0	0
Other comprehensive income (loss)		$ 78					78								1
Balance at end of period - shares at Sep. 30, 2015		671,792	671,792	[1]				66,368		66,368	[2]					21,294		21,294	[3]			37,818		37,818	[4]
Balance at end of period at Sep. 30, 2015															$ 4,437
Balance at end of period at Sep. 30, 2015		$ 10,222	$ 7		$ 9,630	$ 2,791	$ (2,206)	$ 3,090		$ 364		$ 1,925		$ 801		$ 2,259		$ 424		$ 1,541	$ 294	$ 3,288		$ 308		$ 2,596	$ 385	$ (1)

[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] Net income approximates comprehensive income.

[6] Net income equals comprehensive income.

[7] Includes non-cash contributions of $ 47 million.