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)		$ 0.4125
Balance at beginning of period - shares at Dec. 31, 2018			720,323,000	[1]						66,368,000	[2]							21,294,000	[3]					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	[1]		1,048,000
Common stock issued		32			32
Stock-based compensation		(2)			(2)
Net Income		466				466		121	[5]				121	124	[6]	64	[7]				64	81	[8]				81
Capital contributions from parent																						28				28
Dividends and dividend equivalents	[9]	(298)				(298)
Dividends declared on common stock								(120)					(120)			(30)					(30)	(39)					(39)
Distributions to member														(56)
Other comprehensive income (loss)		317					317
Balance at end of period - shares at Mar. 31, 2019			721,371,000	[1]						66,368,000	[2]							21,294,000	[3]					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
Dividends Declared Per Share of Common Stock (in dollars per share)		$ 0.4150
Balance at beginning of period - shares at Dec. 31, 2019		767,233,000	767,233,000	[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, 2019		$ 12,991	$ 8		12,214	5,127	(4,358)	$ 4,832		$ 364		3,558	910			$ 2,762		$ 424		1,820	518	$ 3,574		$ 308		2,729	537
Balance at beginning of period at Dec. 31, 2019														4,942
Common stock shares issued		0	1,033,000
Common stock issued		$ 34			34
Stock-based compensation		(9)			(9)
Net Income		554				554		118	[5]				118	135	[6]	73	[7]				73	80	[8]				80
Capital contributions from parent																25				25		37				37
Dividends and dividend equivalents	[9]	(319)				(319)
Dividends declared on common stock								$ (165)					(165)			$ (29)					(29)	$ (37)					(37)
Distributions to member														(52)
Other comprehensive income (loss)		$ (8)					(8)							1
Balance at end of period - shares at Mar. 31, 2020		768,266,000	768,266,000					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, 2020		$ 13,241	$ 8		$ 12,239	5,360	$ (4,366)	$ 4,785		$ 364		$ 3,558	$ 863			$ 2,831		$ 424		$ 1,845	$ 562	$ 3,654		$ 308		$ 2,766	$ 580
Balance at end of period at Mar. 31, 2020														$ 5,026
Cumulative Effect of New Accounting Principle in Period of Adoption		$ (2)				$ (2)

[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] Net income equals comprehensive income.

[9] Dividends declared per share of common stock were $0.4150 and $0.4125 at March 31, 2020 and March 31, 2019.