CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Unaudited) - USD ($) shares in Thousands, $ in Millions		Total	Common Stock [Member]		Additional Paid-in Capital [Member]	Earnings Reinvested [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock, Common	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)		$ 0.415
Balance at beginning of period - shares at Dec. 31, 2020			768,907	[1]							66,368	[2]					21,294	[3]					37,818	[4]
Balance at beginning of period at Dec. 31, 2020		$ 13,373	$ 8		$ 12,270	$ 5,315	$ (4,220)	$ 0	$ 5,124		$ 364		$ 3,753	$ 1,007	$ 2,948		$ 424		$ 1,923	$ 601	$ 3,782		$ 308		$ 2,857	$ 617
Common stock shares issued	[1]		520
Common stock issued		16			16
Stock-based compensation		(13)			(13)
Net income (loss)		(1,840)				(1,840)			113	[5]				113	75	[6]				75	86	[7]				86
Dividends and dividend equivalents	[8]	(320)				(320)
Dividends declared on common stock									(115)					(115)	(60)					(60)	(56)					(56)
Other comprehensive income (loss)		338					338
Balance at end of period - shares at Mar. 31, 2021			769,427	[1]							66,368	[2]					21,294	[3]					37,818	[4]
Balance at end of period at Mar. 31, 2021		11,554	$ 8		12,273	3,155	(3,882)	0	5,122		$ 364		3,753	1,005	2,963		$ 424		1,923	616	3,812		$ 308		2,857	647
Balance at beginning of period - shares at Dec. 31, 2020			768,907	[1]							66,368	[2]					21,294	[3]					37,818	[4]
Balance at beginning of period at Dec. 31, 2020		$ 13,373	$ 8		12,270	5,315	(4,220)	0	$ 5,124		$ 364		3,753	1,007	$ 2,948		$ 424		1,923	601	$ 3,782		$ 308		2,857	617
Treasury Stock, Value, Acquired								1,000
Balance at end of period - shares at Dec. 31, 2021		735,112	735,112	[1]					66,368		66,368	[2]			21,294		21,294	[3]			37,818		37,818	[4]
Balance at end of period at Dec. 31, 2021		$ 13,723	$ 8		12,303	2,572	(157)	(1,003)	$ 5,736		$ 364		4,254	1,118	$ 3,079		$ 424		1,997	658	$ 3,928		$ 308		2,957	663
Dividends Declared Per Share of Common Stock (in dollars per share)		$ 0.200
Common stock shares issued			123
Common stock issued		$ 4			4
Stock Issued During Period, Value, Treasury Stock Reissued								$ 16
Stock Issued During Period, Shares, Treasury Stock Reissued								530
Treasury Stock, Value, Acquired		16						$ 0
Stock-based compensation		(8)			(8)
Net income (loss)		273				273			143	[5]				143	93	[6]				93	107	[7]				107
Dividends and dividend equivalents	[8]	(148)				(148)
Dividends declared on common stock									$ (72)					(72)	$ (75)					(75)	$ (90)					(90)
Other comprehensive income (loss)		$ 5					5
Balance at end of period - shares at Mar. 31, 2022		735,765	735,765						66,368		66,368	[2]			21,294		21,294	[3]			37,818		37,818	[4]
Balance at end of period at Mar. 31, 2022		$ 13,865	$ 8		$ 12,299	$ 2,697	$ (152)	$ (987)	$ 5,767		$ 364		4,214	$ 1,189	$ 3,097		$ 424		$ 1,997	$ 676	$ 3,945		$ 308		$ 2,957	$ 680
Return of Capital to Parent									$ (40)				$ (40)

[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 Energy Holdings.

[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 $0.200 and $0.415 for the three months ended March 31, 2022 and March 31, 2021.