CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Unaudited) - USD ($) shares in Thousands, $ in Millions		Total	Common Stock [Member]		Additional Paid-in Capital [Member]	Earnings Reinvested [Member]	Accumulated Other Comprehensive Loss [Member]	PPL Electric Utilities Corp [Member]		PPL Electric Utilities Corp [Member] Common Stock [Member]		PPL Electric Utilities Corp [Member] Additional Paid-in Capital [Member]		PPL Electric Utilities Corp [Member] Earnings Reinvested [Member]	LG And E And KU Energy LLC [Member]		Louisville Gas And Electric Co [Member]		Louisville Gas And Electric Co [Member] Common Stock [Member]		Louisville Gas And Electric Co [Member] Additional Paid-in Capital [Member]	Louisville Gas And Electric Co [Member] Earnings Reinvested [Member]	Kentucky Utilities Co [Member]		Kentucky Utilities Co [Member] Common Stock [Member]		Kentucky Utilities Co [Member] Additional Paid-in Capital [Member]	Kentucky Utilities Co [Member] Earnings Reinvested [Member]	Kentucky Utilities Co [Member] Accumulated Other Comprehensive Loss [Member]
Balance at beginning of period - shares at Dec. 31, 2014			665,849	[1]						66,368	[2]								21,294	[3]					37,818	[4]
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
Balance at beginning of period at Dec. 31, 2014															$ 4,248
Common stock shares issued	[1]		3,665
Common stock issued		111			111
Stock-based compensation		20			20
Net income		(110)				(110)		136	[5]					136	177	[5]	88	[5]				88	117	[6]				117
Contributions from member															20
Capital contributions from parent								207	[7]			207	[7]				20				20
Dividends and dividend equivalents		(498)				(498)
Distribution of PPL Energy Supply		(3,224)				(3,200)	(24)
Dividends declared on common stock								(107)						(107)			(58)					(58)	(81)					(81)
Distributions to member															(109)
Other comprehensive income (loss)		14					14								(7)								(1)						(1)
Balance at end of period - shares at Jun. 30, 2015			669,514	[1]						66,368	[2]								21,294	[3]					37,818	[4]
Balance at end 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)
Balance at end of period at Jun. 30, 2015															4,329
Balance at beginning of period - shares at Dec. 31, 2015		673,857	673,857	[1]				66,368		66,368	[2]						21,294		21,294	[3]			37,818		37,818	[4]
Balance at beginning of period at Dec. 31, 2015		$ 9,919	$ 7		9,687	2,953	(2,728)	$ 3,119		$ 364		1,934		821			$ 2,330		$ 424		1,611	295	$ 3,287		$ 308		2,596	383	0
Balance at beginning of period at Dec. 31, 2015															4,517
Common stock shares issued	[1]		3,692
Common stock issued		109			109
Stock-based compensation		(30)			(30)
Net income		964				964		173	[5]					173	204	[5]	96	[5]				96	129	[6]				129
Contributions from member															37
Capital contributions from parent								200				200					47				47		20				20
Dividends and dividend equivalents		(515)				(515)
Dividends declared on common stock								$ (116)						(116)			$ (61)					(61)	$ (113)					(113)
Distributions to member															(114)
Other comprehensive income (loss)		(129)					(129)								3														(1)
Adoption of stock-based compensation guidance cumulative effect adjustment		$ 7				7
Balance at end of period - shares at Jun. 30, 2016		677,549	677,549	[1]				66,368		66,368	[2]						21,294		21,294	[3]			37,818		37,818	[4]
Balance at end of period at Jun. 30, 2016		$ 10,325	$ 7		$ 9,766	$ 3,409	$ (2,857)	$ 3,376		$ 364		$ 2,134		$ 878			$ 2,412		$ 424		$ 1,658	$ 330	$ 3,322		$ 308		$ 2,616	$ 399	$ (1)
Balance at end of period at Jun. 30, 2016															$ 4,647

[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 equals comprehensive income.

[6] Net income approximates comprehensive income.

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