CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Unaudited) - USD ($) $ in Millions		Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock [Member]		Additional Paid-in Capital [Member]	Earnings Reinvested [Member]	Earnings Reinvested [Member] Cumulative Effect, Period of Adoption, Adjustment	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]	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)		$ 0.830
Balance at beginning of period - shares at Dec. 31, 2019				767,233,000	[1]							66,368,000	[2]					21,294,000	[3]					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
Common stock shares issued	[1]			1,550,000
Common stock issued		47				47
Stock-based compensation		(6)				(6)
Net income (loss)		898					898			236	[5]				236	120	[6]				120	133	[7]				133
Capital contributions from parent										255				255		53				53		37				37
Dividends and dividend equivalents	[8]	(640)					(640)
Dividends declared on common stock										(246)					(246)	(76)					(76)	(89)					(89)
Other comprehensive income (loss)		(244)							(244)
Balance at end of period - shares at Jun. 30, 2020				768,783,000	[1]							66,368,000	[2]					21,294,000	[3]					37,818,000	[4]
Balance at end of period at Jun. 30, 2020		$ 13,044		$ 8		12,255	5,383		(4,602)	4,817		$ 364		3,553	900	2,859		$ 424		1,873	562	3,655		$ 308		2,766	581
Contributions from parent										255						53						37
Return of Capital to Parent										(260)				(260)
Dividends Declared Per Share of Common Stock (in dollars per share)		$ 0.830
Balance at beginning of period - shares at Mar. 31, 2020				768,266,000								66,368,000	[2]					21,294,000	[3]					37,818,000	[4]
Balance at beginning 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
Common stock shares issued				517,000
Common stock issued		13				13
Stock-based compensation		3				3
Net income (loss)		344					344			118	[5]				118	47	[6]				47	53	[7]				53
Capital contributions from parent										255				255		28				28
Dividends and dividend equivalents		(321)					(321)
Dividends declared on common stock										(81)					(81)	(47)					(47)	(52)					(52)
Other comprehensive income (loss)		(236)							(236)
Balance at end of period - shares at Jun. 30, 2020				768,783,000	[1]							66,368,000	[2]					21,294,000	[3]					37,818,000	[4]
Balance at end of period at Jun. 30, 2020		$ 13,044		$ 8		12,255	5,383		(4,602)	4,817		$ 364		3,553	900	$ 2,859		$ 424		1,873	562	$ 3,655		$ 308		2,766	581
Return of Capital to Parent										$ (260)				(260)
Cumulative Effect of New Accounting Principle in Period of Adoption			$ (2)					$ (2)
Dividends Declared Per Share of Common Stock (in dollars per share)		$ 0.415
Balance at beginning of period - shares at Dec. 31, 2020		768,907,000		768,907,000	[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, 2020		$ 13,373		$ 8		12,270	5,315		(4,220)	$ 5,124		$ 364		3,753	1,007	$ 2,948		$ 424		1,923	601	$ 3,782		$ 308		2,857	617
Common stock shares issued		0		657,000
Common stock issued		$ 20				20
Stock-based compensation		(9)				(9)
Net income (loss)		(1,821)					(1,821)			209	[5]				209	120	[6]				120	142	[7]				142
Capital contributions from parent										750				750		44				44		60				60
Dividends and dividend equivalents	[8]	(640)					(640)
Dividends declared on common stock										$ (201)					(201)	$ (109)					(109)	$ (111)					(111)
Other comprehensive income (loss)		$ 4,029							4,029
Balance at end of period - shares at Jun. 30, 2021		769,564,000		769,564,000						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 Jun. 30, 2021		$ 14,952		$ 8		12,281	2,854		(191)	$ 5,882		$ 364		4,503	1,015	$ 3,003		$ 424		1,967	612	$ 3,873		$ 308		2,917	648
Contributions from parent										750						44						60
Dividends Declared Per Share of Common Stock (in dollars per share)		$ 0.415
Balance at beginning of period - shares at Mar. 31, 2021				769,427,000								66,368,000	[2]					21,294,000	[3]					37,818,000	[4]
Balance at beginning of period at Mar. 31, 2021		$ 11,554		$ 8		12,273	3,155		(3,882)	5,122		$ 364		3,753	1,005	2,963		$ 424		1,923	616	3,812		$ 308		2,857	647
Common stock shares issued				137,000
Common stock issued		4				4
Stock-based compensation		4				4
Net income (loss)		19					19			96	[5]				96	45	[6]				45	56	[7]				56
Capital contributions from parent										750				750		44				44		60				60
Dividends and dividend equivalents		(320)					(320)
Dividends declared on common stock										$ (86)					(86)	$ (49)					(49)	$ (55)					(55)
Other comprehensive income (loss)		$ 3,691							3,691
Balance at end of period - shares at Jun. 30, 2021		769,564,000		769,564,000						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 Jun. 30, 2021		$ 14,952		$ 8		$ 12,281	$ 2,854		$ (191)	$ 5,882		$ 364		$ 4,503	$ 1,015	$ 3,003		$ 424		$ 1,967	$ 612	$ 3,873		$ 308		$ 2,917	$ 648

[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 equals comprehensive income.

[8] Dividends declared per share of common stock were $0.415 and $0.830 for the three and six months ended June 30, 2021 and June 30, 2020.