CONSOLIDATED STATEMENTS OF EQUITY - 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]		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	[7]				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	[1]						66,368	[2]							21,294	[3]					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	[1]		8,008
Common stock issued		249			249
Stock-based compensation		5			5
Net income		682				682		252	[5]					252	364	185	[6]				185	234	[7]				234
Capital contributions from parent								331	[8]			331	[8]			90				90
Dividends, dividend equivalents, redemptions and distributions		(1,010)				(1,010)
Cash dividends declared on common stock								$ (181)						(181)		$ (119)					(119)	$ (153)					(153)
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
Common stock shares issued			5,874
Common stock issued		185			185
Stock-based compensation		(31)			(31)
Net income		1,902				1,902		340	[5]					340	429	203	[6]				203	265	[7]				265
Capital contributions from parent								220				220				71				71		20				20
Dividends, dividend equivalents, redemptions and distributions		(1,033)				(1,033)
Cash dividends declared on common stock								$ (288)						(288)		$ (128)					(128)	(248)					(248)
Contributions from member															61
Distributions to member															(316)
Other comprehensive income (loss)		(1,050)					(1,050)								(24)							$ (1)						(1)
Adoption of stock-based compensation guidance cumulative effect adjustment		$ 7				7
Balance at end of period - shares at Dec. 31, 2016		679,731	679,731	[1]				66,368		66,368	[2]					21,294		21,294	[3]			37,818		37,818	[4]
Balance at end of period at Dec. 31, 2016															$ 4,667
Balance at end of period at Dec. 31, 2016		$ 9,899	$ 7		$ 9,841	$ 3,829	$ (3,778)	$ 3,391		$ 364		$ 2,154		$ 873		$ 2,476		$ 424		$ 1,682	$ 370	$ 3,323		$ 308		$ 2,616	$ 400	$ (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 equals comprehensive income.

[6] Net income equals comprehensive income.

[7] Net income approximates comprehensive income.

[8] Includes non-cash contributions of $56 million. See Note 11 for additional information.