CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Unaudited) - USD ($) $ 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]
Dividends Declared Per Share of Common Stock (in dollars per share)		$ 0.4100
Balance at beginning of period - shares at Dec. 31, 2017			693,398,000	[1]						66,368,000	[2]							21,294,000	[3]				37,818,000	[4]
Balance at beginning of period at Dec. 31, 2017		$ 10,761	$ 7		$ 10,305	$ 3,871	$ (3,422)	$ 3,992		$ 364		$ 2,729	$ 899			$ 2,527		$ 424		$ 1,712	$ 391	$ 3,357	$ 308		$ 2,616	$ 433
Balance at beginning of period at Dec. 31, 2017														$ 4,563
Common stock shares issued	[1]		3,985,000
Common stock issued		115			115
Stock-based compensation		(9)			(9)
Net Income		452				452		148	[5]				148	142	[6]	72	[7]				72	87				87
Dividends and dividend equivalents	[8]	(286)				(286)
Dividends declared on common stock								(72)					(72)			(34)					(34)	(79)				(79)
Distributions to member														(69)
Other comprehensive income		143					143							1
Balance at end of period - shares at Mar. 31, 2018			697,383,000	[1]						66,368,000	[2]							21,294,000	[3]				37,818,000	[4]
Balance at end of period at Mar. 31, 2018		$ 11,176	$ 7		10,411	4,037	(3,279)	$ 4,068		$ 364		2,729	975			$ 2,565		$ 424		1,712	429	$ 3,365	$ 308		2,616	441
Balance at end of period at Mar. 31, 2018														4,637
Dividends Declared Per Share of Common Stock (in dollars per share)		$ 0.4125
Balance at beginning of period - shares at Dec. 31, 2018		720,323,000	720,323,000	[1]				66,368,000		66,368,000	[2]					21,294,000		21,294,000	[3]			37,818,000	37,818,000	[4]
Balance at beginning of period at Dec. 31, 2018		$ 11,657	$ 7		11,021	4,593	(3,964)	$ 4,461		$ 364		3,158	939			$ 2,687		$ 424		1,795	468	$ 3,442	$ 308		2,661	473
Balance at beginning of period at Dec. 31, 2018														4,723
Common stock shares issued		0	1,048,000	[1]
Common stock issued		$ 32			32
Stock-based compensation		(2)			(2)
Net Income		466				466		121	[5]				121	124	[6]	64	[7]				64	81				81
Capital contributions from parent																						28			28
Dividends and dividend equivalents	[8]	(298)				(298)
Dividends declared on common stock								$ (120)					(120)			$ (30)					(30)	$ (39)				(39)
Distributions to member														(56)
Other comprehensive income		$ 317					317
Balance at end of period - shares at Mar. 31, 2019		721,371,000	721,371,000	[1]				66,368,000		66,368,000	[2]					21,294,000		21,294,000	[3]			37,818,000	37,818,000	[4]
Balance at end of period at Mar. 31, 2019		$ 12,172	$ 7		$ 11,051	$ 4,761	$ (3,647)	$ 4,462		$ 364		$ 3,158	$ 940			$ 2,721		$ 424		$ 1,795	$ 502	$ 3,512	$ 308		$ 2,689	$ 515
Balance at end of period at Mar. 31, 2019														$ 4,791

[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] Net income equals comprehensive income.

[8] Dividends declared per share of common stock at March 31, 2019 and March 31, 2018: $0.4125 and $0.4100.