CONSOLIDATED STATEMENTS OF EQUITY - USD ($) shares in Thousands, $ in Millions		Total	Common Stock		Additional Paid-in Capital	Earnings Reinvested	Accumulated Other Comprehensive Loss	Non-controlling Interests	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, 2012			581,944	[1]							66,368	[2]							21,294	[3]					37,818	[4]
Balance at beginning of period at Dec. 31, 2012																$ 3,786
Balance at beginning of period at Dec. 31, 2012		$ 10,498	$ 6		$ 6,936	$ 5,478	$ (1,940)	$ 18	$ 2,062		$ 364		$ 1,135		$ 563		$ 1,810		$ 424		$ 1,278	$ 108	$ 2,783		$ 308		$ 2,348	$ 126	$ 1
Common stock shares issued	[1]		50,807
Common stock issued		1,437			1,437
Common stock shares repurchased			(2,430)
Common stock repurchased		74			(74)
Cash settlement of equity forward agreements		(13)			(13)
Stock-based compensation		30			30
Net income		1,130				1,130			209	[5]					209	347	163	[6]				163	228	[5]				228
Capital contributions from parent									205				205				86				86		157				157
Dividends, dividend equivalents, redemptions and distributions		(917)				(899)		(18)
Cash dividends declared on common stock									127						127		(99)					(99)	(124)					(124)
Contributions from member																243
Distributions to member																(254)
Other comprehensive income (loss)		375					375									28
Balance at end of period - shares at Dec. 31, 2013			630,321	[1]							66,368	[2]							21,294	[3]					37,818	[4]
Balance at end of period at Dec. 31, 2013																4,150
Balance at end of period at Dec. 31, 2013		12,466	$ 6		8,316	5,709	(1,565)	$ 0	2,349		$ 364		1,340		645		1,960		$ 424		1,364	172	3,044		$ 308		2,505	230	1
Common stock shares issued	[1]		35,528
Common stock issued		1,090	$ 1		1,089
Stock-based compensation		28			28
Net income		1,737				1,737			263	[5]					263	344	169	[6]				169	220	[5]				220
Capital contributions from parent									263				263				157				157		91				91
Dividends, dividend equivalents, redemptions and distributions		(984)				(984)
Cash dividends declared on common stock									$ 158						158		$ (112)					(112)	(148)					(148)
Contributions from member																248
Distributions to member																(436)
Other comprehensive income (loss)		$ (709)					(709)									(58)							$ (1)						(1)
Balance at end 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 end of period at Dec. 31, 2014																4,248
Balance at end 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			8,008
Common stock issued		249			249
Stock-based compensation		5			5
Net income		682				682			252	[5]					252	364	185	[6]				185	234	[5]				234
Capital contributions from parent									331	[7]			331	[7]			90				90
Dividends, dividend equivalents, redemptions and distributions		(1,010)				(1,010)
Cash dividends declared on common stock																	$ (119)					(119)	$ (153)					(153)
Dividends declared on common stock									$ 181						181
Contributions from member																125
Distributions to member																(219)
Distribution of PPL Energy Supply		(3,205)				(3,181)	(24)
Other comprehensive income (loss)		$ (430)					(430)									(1)
Balance at end 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 end of period at Dec. 31, 2015																$ 4,517
Balance at end 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

[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 $ 56 million . See Note 11 for additional information.