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, 2014			665,849	[1]						66,368	[2]							21,294	[3]					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]		1,864
Common stock issued		54			54
Stock-based compensation		(7)			(7)
Net income		647				647		87	[5]				87	117	[6]	53	[5]				53	78	[6]				78
Capital contributions from parent								50				50
Dividends and dividend equivalents		(249)				(249)
Dividends declared on common stock								(44)					(44)			(23)					(23)	(30)					(30)
Distributions to member														(23)
Other comprehensive income (loss)		(37)					(37)															(1)						(1)
Balance at end of period - shares at Mar. 31, 2015			667,713	[1]						66,368	[2]							21,294	[3]					37,818	[4]
Balance at end of period at Mar. 31, 2015														4,342
Balance at end of period at Mar. 31, 2015		$ 14,036	$ 7		9,480	6,860	(2,311)	$ 2,810		$ 364		1,653	793			$ 2,204		$ 424		1,521	259	$ 3,253		$ 308		2,596	350	(1)
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														4,517
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
Common stock shares issued	[1]		2,527
Common stock issued		70			70
Stock-based compensation		(28)			(28)
Net income		481				481		94	[5]				94	120	[6]	56	[5]				56	75	[6]				75
Capital contributions from parent																30				30
Dividends and dividend equivalents		(256)				(256)
Dividends declared on common stock								$ (45)					(45)			$ (25)					(25)	$ (64)					(64)
Distributions to member														(29)
Other comprehensive income (loss)		(431)					(431)							1
Adoption of stock-based compensation guidance cumulative effect adjustment		$ 7				7
Balance at end of period - shares at Mar. 31, 2016		676,384	676,384	[1]				66,368		66,368	[2]					21,294		21,294	[3]			37,818		37,818	[4]
Balance at end of period at Mar. 31, 2016														$ 4,609
Balance at end of period at Mar. 31, 2016		$ 9,762	$ 7		$ 9,729	$ 3,185	$ (3,159)	$ 3,168		$ 364		$ 1,934	$ 870			$ 2,391		$ 424		$ 1,641	$ 326	$ 3,298		$ 308		$ 2,596	$ 394	$ 0

[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.