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]	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)		$ 1.2375
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]			1,984,000
Common stock issued		61				61
Stock-based compensation		5				5
Net Income		1,382					1,382			333	[5]				333	388	[6]	188	[7]				188	237	[8]				237
Capital contributions from parent										400				400				25				25		68				68
Dividends and dividend equivalents	[9]	(895)					(895)
Dividends declared on common stock										(276)					(276)			(130)					(130)	(167)					(167)
Distributions to member																(206)
Other comprehensive income (loss)		(308)							(308)							(2)
Balance at end of period - shares at Sep. 30, 2019				722,307,000	[1]							66,368,000	[2]							21,294,000	[3]					37,818,000	[4]
Balance at end of period at Sep. 30, 2019		$ 11,902		$ 7		11,087	5,080		(4,272)	4,918		$ 364		3,558	996			2,770		$ 424		1,820	526	3,580		$ 308		2,729	543
Balance at end of period at Sep. 30, 2019																4,966
Contributions from parent										400								25						68
Proceeds from Contributed Capital																63
Contributions Made To Limited Liability Company LLC																63
Dividends Declared Per Share of Common Stock (in dollars per share)		$ 0.4125
Balance at beginning of period - shares at Jun. 30, 2019				721,840,000								66,368,000	[2]							21,294,000	[3]					37,818,000	[4]
Balance at beginning of period at Jun. 30, 2019		$ 11,983		$ 7		11,069	4,903		(3,996)	4,461		$ 364		3,158	939			2,749		$ 424		1,820	505	3,561		$ 308		2,729	524
Balance at beginning of period at Jun. 30, 2019																4,877
Common stock shares issued				467,000
Common stock issued		14				14
Stock-based compensation		4				4
Net Income		475					475			118	[5]				118	158	[6]	80	[7]				80	95	[8]				95
Capital contributions from parent										400				400
Dividends and dividend equivalents		(298)					(298)
Dividends declared on common stock										(61)					(61)			(59)					(59)	(76)					(76)
Distributions to member																(69)
Other comprehensive income (loss)		(276)							(276)							0
Balance at end of period - shares at Sep. 30, 2019				722,307,000	[1]							66,368,000	[2]							21,294,000	[3]					37,818,000	[4]
Balance at end of period at Sep. 30, 2019		$ 11,902		$ 7		11,087	5,080		(4,272)	$ 4,918		$ 364		3,558	996			$ 2,770		$ 424		1,820	526	$ 3,580		$ 308		2,729	543
Balance at end of period at Sep. 30, 2019																4,966
Dividends Declared Per Share of Common Stock (in dollars per share)		$ 1.2450
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		1,564,000
Common stock issued		$ 48				48
Stock-based compensation		(2)				(2)
Net Income		1,179					1,179			370	[5]				370	355	[6]	191	[7]				191	217	[8]				217
Capital contributions from parent										740				740				53				53		98				98
Dividends and dividend equivalents	[9]	(959)					(959)
Dividends declared on common stock										$ (323)					(323)			$ (115)					(115)	$ (145)					(145)
Distributions to member																(194)
Other comprehensive income (loss)		$ 431							431							(1)
Balance at end of period - shares at Sep. 30, 2020		768,797,000		768,797,000						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 Sep. 30, 2020		$ 13,686		$ 8		12,260	5,345		(3,927)	$ 4,874		$ 364		3,553	957			$ 2,891		$ 424		1,873	594	$ 3,744		$ 308		2,827	609
Balance at end of period at Sep. 30, 2020																5,102
Contributions from parent										740								53						98
Proceeds from Contributed Capital																0
Return of Capital to Parent										(745)				(745)
Dividends Declared Per Share of Common Stock (in dollars per share)		$ 0.4150
Balance at beginning of period - shares at Jun. 30, 2020				768,783,000								66,368,000	[2]							21,294,000	[3]					37,818,000	[4]
Balance at beginning 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
Balance at beginning of period at Jun. 30, 2020																5,022
Common stock shares issued				14,000
Common stock issued		1				1
Stock-based compensation		4				4
Net Income		281					281			134	[5]				134	137		71	[7]				71	84	[8]				84
Capital contributions from parent										485				485										61				61
Dividends and dividend equivalents		(319)					(319)
Dividends declared on common stock										$ (77)					(77)			$ (39)					(39)	$ (56)					(56)
Distributions to member																(54)
Other comprehensive income (loss)		$ 675							675							(3)
Balance at end of period - shares at Sep. 30, 2020		768,797,000		768,797,000						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 Sep. 30, 2020		$ 13,686		$ 8		$ 12,260	$ 5,345		$ (3,927)	$ 4,874		$ 364		3,553	$ 957			$ 2,891		$ 424		$ 1,873	$ 594	$ 3,744		$ 308		$ 2,827	$ 609
Balance at end of period at Sep. 30, 2020																$ 5,102
Return of Capital to Parent										$ (485)				$ (485)
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 $1.2450 for the three and nine months ended September 30, 2020 and $0.4125 and $1.2375 for the three and nine months ended September 30, 2019.