Financing Activities - Long-term Debt (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended				12 Months Ended
	Jan. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Feb. 28, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Principal outstanding		$ 14,775			$ 14,775	$ 13,353
Unamortized premium and (discount), net		(55)			(55)	(32)
Unamortized debt issuance costs		(108)			(108)	(78)
Total Long-term Debt		14,612			14,612	13,243
Less current portion of Long-term debt		1			1	354
Long-term Debt		14,611			14,611	12,889
Aggregate maturities of long-term debt (Details) [Abstract]
2022		1			1
2023		551			551
2024		904			904
2025		428			428
2026		1,350			1,350
Thereafter		$ 11,541			11,541
Loss on Extinguishment of Debt					$ 0	0	$ (395)
Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Weighted-Average Rate		3.95%			3.95%
Principal outstanding		$ 3,066			$ 3,066	3,066
Senior Secured Notes - First Mortgage Bonds [Member]
Debt Instrument [Line Items]
Weighted-Average Rate		4.35%			4.35%
Principal outstanding		$ 10,229			$ 10,229	8,957
Junior Subordinated Notes [Member]
Debt Instrument [Line Items]
Weighted-Average Rate		8.27%			8.27%
Principal outstanding		$ 480			$ 480	480
Term Loan Credit Facility [Member]
Debt Instrument [Line Items]
Principal outstanding		0			0	850
First Mortgage Bonds [Member] | Tax Exempt Revenue Bonds [Member]
Long-term Debt (Numeric) [Abstract]
Aggregate amount of tax-exempt revenue bonds in a term rate mode		$ 894			$ 894
Exchangeable Senior Unsecured Notes
Debt Instrument [Line Items]
Weighted-Average Rate		2.88%			2.88%
Principal outstanding		$ 1,000			$ 1,000	0
Exchangeable Senior Unsecured Notes | Exchangeable Senior Notes Due 2028
Long-term Debt (Numeric) [Abstract]
Principal amount				$ 1,000
Stated interest rate				2.875%
Aggregate maturities of long-term debt (Details) [Abstract]
Exchangeable Senior Notes Initial Exchange Rate, Dollars per Share				$ 34.08
Exchangeable Senior Notes Initial Exchange Rate, Shares per $1000 Principal Amount				29.3432
Proceeds from Convertible Debt				$ 980
PPL Capital Funding [Member]
Aggregate maturities of long-term debt (Details) [Abstract]
Capacity		1,450			1,450
PPL Electric [Member]
Aggregate maturities of long-term debt (Details) [Abstract]
Capacity		650			650
PPL Electric [Member] | Term Loan Credit Facility [Member]
Aggregate maturities of long-term debt (Details) [Abstract]
Capacity		0			0
PPL Electric [Member] | Repayment | Term Loan Credit Facility [Member]
Aggregate maturities of long-term debt (Details) [Abstract]
Capacity			$ 250
PPL Electric [Member] | Senior Secured Notes - First Mortgage Bonds [Member] | Mortgage Indenture [Member]
Long-term Debt (Numeric) [Abstract]
Aggregate carrying value of property subject to lien		12,400			12,400	11,800
PPL Electric [Member] | First Mortgage Bonds [Member] | First Mortgage Bonds, Floating Rate Series due 2023 [Member] | Debt Instrument, Redemption, Period One [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount			250
PPL Electric [Member] | First Mortgage Bonds [Member] | First Mortgage Bonds, Floating Rate Series due 2024 | Debt Instrument, Redemption, Period One [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount			650
PPL Electric [Member] | First Mortgage Bonds [Member] | First Mortgage Bonds due 2034 | Subsequent Event [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount	$ 650
Stated interest rate	4.85%
Aggregate maturities of long-term debt (Details) [Abstract]
Proceeds from Issuance of First Mortgage Bond	$ 644
PPL Electric [Member] | First Mortgage Bonds [Member] | First Mortgage Bonds Due 2053
Long-term Debt (Numeric) [Abstract]
Principal amount			$ 750
Stated interest rate			5.25%
PPL Electric [Member] | First Mortgage Bonds [Member] | First Mortgage Bonds Due 2033
Long-term Debt (Numeric) [Abstract]
Principal amount			$ 600
Stated interest rate			5.00%
PPL Electric [Member] | First Mortgage Bonds [Member] | First Mortgage Bonds Due 2033 and 2053
Aggregate maturities of long-term debt (Details) [Abstract]
Proceeds from Issuance of First Mortgage Bond			$ 1,320
LGE [Member]
Aggregate maturities of long-term debt (Details) [Abstract]
Capacity		500			500
LGE [Member] | Term Loan Credit Facility [Member]
Aggregate maturities of long-term debt (Details) [Abstract]
Capacity		0			0
LGE [Member] | Repayment | Term Loan Credit Facility [Member]
Aggregate maturities of long-term debt (Details) [Abstract]
Capacity			300
LGE [Member] | First Mortgage Bonds [Member] | 2010 Mortgage Indenture [Member]
Long-term Debt (Numeric) [Abstract]
Aggregate carrying value of property subject to lien		5,900			$ 5,900	5,800
LGE [Member] | First Mortgage Bonds [Member] | Tax Exempt Revenue Bonds [Member]
Long-term Debt (Numeric) [Abstract]
Minimum length of time to convert interest rate mode					1 year
Aggregate amount of tax-exempt revenue bonds in a variable rate mode		66			$ 66
LGE [Member] | First Mortgage Bonds [Member] | Environmental Facilities Revenue Bonds Due 2054
Long-term Debt (Numeric) [Abstract]
Principal amount		$ 65			$ 65
Stated interest rate		4.70%			4.70%
Aggregate maturities of long-term debt (Details) [Abstract]
Proceeds from Issuance of First Mortgage Bond		$ 40
Restricted Cash		25			$ 25
LGE [Member] | First Mortgage Bonds [Member] | First Mortgage Bonds Due 2033
Long-term Debt (Numeric) [Abstract]
Principal amount			$ 400
Stated interest rate			5.45%
Aggregate maturities of long-term debt (Details) [Abstract]
Proceeds from Issuance of First Mortgage Bond			$ 396
KU [Member]
Aggregate maturities of long-term debt (Details) [Abstract]
Capacity		400			400
KU [Member] | Term Loan Credit Facility [Member]
Aggregate maturities of long-term debt (Details) [Abstract]
Capacity		0			0
KU [Member] | Repayment | Term Loan Credit Facility [Member]
Aggregate maturities of long-term debt (Details) [Abstract]
Capacity			300
KU [Member] | First Mortgage Bonds [Member] | 2010 Mortgage Indenture [Member]
Long-term Debt (Numeric) [Abstract]
Aggregate carrying value of property subject to lien		7,300			$ 7,300	7,100
KU [Member] | First Mortgage Bonds [Member] | Tax Exempt Revenue Bonds [Member]
Long-term Debt (Numeric) [Abstract]
Minimum length of time to convert interest rate mode					1 year
Aggregate amount of tax-exempt revenue bonds in a variable rate mode		33			$ 33
KU [Member] | First Mortgage Bonds [Member] | Environmental Facilities Revenue Bonds Due 2054
Long-term Debt (Numeric) [Abstract]
Principal amount		$ 60			$ 60
Stated interest rate		4.70%			4.70%
Aggregate maturities of long-term debt (Details) [Abstract]
Proceeds from Issuance of First Mortgage Bond		$ 37
Restricted Cash		23			$ 23
KU [Member] | First Mortgage Bonds [Member] | First Mortgage Bonds Due 2033
Long-term Debt (Numeric) [Abstract]
Principal amount			$ 400
Stated interest rate			5.45%
Aggregate maturities of long-term debt (Details) [Abstract]
Proceeds from Issuance of First Mortgage Bond			$ 396
PPL Electric Utilities Corp [Member]
Debt Instrument [Line Items]
Principal outstanding		4,649			4,649	4,539
Unamortized discount		(42)			(42)	(22)
Unamortized debt issuance costs		(40)			(40)	(31)
Total Long-term Debt		4,567			4,567	4,486
Less current portion of Long-term debt		0			0	340
Long-term Debt		4,567			4,567	4,146
Aggregate maturities of long-term debt (Details) [Abstract]
2022		0			0
2023		0			0
2024		0			0
2025		108			108
2026		0			0
Thereafter		4,541			4,541
Capacity		650			650
PPL Electric Utilities Corp [Member] | Term Loan Credit Facility [Member]
Aggregate maturities of long-term debt (Details) [Abstract]
Capacity		$ 0			$ 0
PPL Electric Utilities Corp [Member] | Repayment | Term Loan Credit Facility [Member]
Aggregate maturities of long-term debt (Details) [Abstract]
Capacity			250
PPL Electric Utilities Corp [Member] | Senior Secured Notes - First Mortgage Bonds [Member]
Debt Instrument [Line Items]
Weighted-Average Rate		4.61%			4.61%
Principal outstanding		$ 4,649			$ 4,649	4,289
PPL Electric Utilities Corp [Member] | Senior Secured Notes - First Mortgage Bonds [Member] | Mortgage Indenture [Member]
Long-term Debt (Numeric) [Abstract]
Aggregate carrying value of property subject to lien		12,400			12,400	11,800
PPL Electric Utilities Corp [Member] | Term Loan Credit Facility [Member]
Debt Instrument [Line Items]
Principal outstanding		0			0	250
PPL Electric Utilities Corp [Member] | First Mortgage Bonds [Member] | First Mortgage Bonds, Floating Rate Series due 2023 [Member] | Debt Instrument, Redemption, Period One [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount			250
PPL Electric Utilities Corp [Member] | First Mortgage Bonds [Member] | First Mortgage Bonds, Floating Rate Series due 2024 | Debt Instrument, Redemption, Period One [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount			650
PPL Electric Utilities Corp [Member] | First Mortgage Bonds [Member] | First Mortgage Bonds due 2034 | Subsequent Event [Member]
Long-term Debt (Numeric) [Abstract]
Principal amount	$ 650
Stated interest rate	4.85%
Aggregate maturities of long-term debt (Details) [Abstract]
Proceeds from Issuance of First Mortgage Bond	$ 644
PPL Electric Utilities Corp [Member] | First Mortgage Bonds [Member] | First Mortgage Bonds Due 2053
Long-term Debt (Numeric) [Abstract]
Principal amount			$ 750
Stated interest rate			5.25%
PPL Electric Utilities Corp [Member] | First Mortgage Bonds [Member] | First Mortgage Bonds Due 2033
Long-term Debt (Numeric) [Abstract]
Principal amount			$ 600
Stated interest rate			5.00%
PPL Electric Utilities Corp [Member] | First Mortgage Bonds [Member] | First Mortgage Bonds Due 2033 and 2053
Aggregate maturities of long-term debt (Details) [Abstract]
Proceeds from Issuance of First Mortgage Bond			$ 1,320
Louisville Gas And Electric Co [Member]
Debt Instrument [Line Items]
Principal outstanding		2,489			2,489	2,324
Unamortized discount		(4)			(4)	(4)
Unamortized debt issuance costs		(16)			(16)	(13)
Total Long-term Debt		2,469			2,469	2,307
Less current portion of Long-term debt		0			0	0
Long-term Debt		2,469			2,469	2,307
Aggregate maturities of long-term debt (Details) [Abstract]
2022		0			0
2023		300			300
2024		90			90
2025		260			260
2026		0			0
Thereafter		1,839			1,839
Capacity		500			500
Louisville Gas And Electric Co [Member] | Term Loan Credit Facility [Member]
Aggregate maturities of long-term debt (Details) [Abstract]
Capacity		0			0
Louisville Gas And Electric Co [Member] | Repayment | Term Loan Credit Facility [Member]
Aggregate maturities of long-term debt (Details) [Abstract]
Capacity			300
Louisville Gas And Electric Co [Member] | Term Loan Credit Facility [Member]
Debt Instrument [Line Items]
Principal outstanding		$ 0			$ 0	300
Louisville Gas And Electric Co [Member] | First Mortgage Bonds [Member]
Debt Instrument [Line Items]
Weighted-Average Rate		4.02%			4.02%
Principal outstanding		$ 2,489			$ 2,489	2,024
Louisville Gas And Electric Co [Member] | First Mortgage Bonds [Member] | 2010 Mortgage Indenture [Member]
Long-term Debt (Numeric) [Abstract]
Aggregate carrying value of property subject to lien		5,900			$ 5,900	5,800
Louisville Gas And Electric Co [Member] | First Mortgage Bonds [Member] | Tax Exempt Revenue Bonds [Member]
Long-term Debt (Numeric) [Abstract]
Minimum length of time to convert interest rate mode					1 year
Aggregate amount of tax-exempt revenue bonds in a term rate mode		538			$ 538
Aggregate amount of tax-exempt revenue bonds in a variable rate mode		66			66
Louisville Gas And Electric Co [Member] | First Mortgage Bonds [Member] | Environmental Facilities Revenue Bonds Due 2054
Long-term Debt (Numeric) [Abstract]
Principal amount		$ 65			$ 65
Stated interest rate		4.70%			4.70%
Aggregate maturities of long-term debt (Details) [Abstract]
Proceeds from Issuance of First Mortgage Bond		$ 40
Restricted Cash		25			$ 25
Louisville Gas And Electric Co [Member] | First Mortgage Bonds [Member] | First Mortgage Bonds Due 2033
Long-term Debt (Numeric) [Abstract]
Principal amount			$ 400
Stated interest rate			5.45%
Aggregate maturities of long-term debt (Details) [Abstract]
Proceeds from Issuance of First Mortgage Bond			$ 396
Kentucky Utilities Co [Member]
Debt Instrument [Line Items]
Principal outstanding		3,089			3,089	2,942
Debt Instrument, Unamortized Premium		5			5	5
Unamortized discount		(9)			(9)	(9)
Unamortized debt issuance costs		(21)			(21)	(18)
Total Long-term Debt		3,064			3,064	2,920
Less current portion of Long-term debt		0			0	13
Long-term Debt		3,064			3,064	2,907
Aggregate maturities of long-term debt (Details) [Abstract]
2022		0			0
2023		250			250
2024		164			164
2025		60			60
2026		0			0
Thereafter		2,615			2,615
Capacity		400			400
Kentucky Utilities Co [Member] | Term Loan Credit Facility [Member]
Aggregate maturities of long-term debt (Details) [Abstract]
Capacity		0			0
Kentucky Utilities Co [Member] | Repayment | Term Loan Credit Facility [Member]
Aggregate maturities of long-term debt (Details) [Abstract]
Capacity			300
Kentucky Utilities Co [Member] | Term Loan Credit Facility [Member]
Debt Instrument [Line Items]
Principal outstanding		$ 0			$ 0	300
Kentucky Utilities Co [Member] | First Mortgage Bonds [Member]
Debt Instrument [Line Items]
Weighted-Average Rate		4.22%			4.22%
Principal outstanding		$ 3,089			$ 3,089	2,642
Kentucky Utilities Co [Member] | First Mortgage Bonds [Member] | 2010 Mortgage Indenture [Member]
Long-term Debt (Numeric) [Abstract]
Aggregate carrying value of property subject to lien		7,300			$ 7,300	$ 7,100
Kentucky Utilities Co [Member] | First Mortgage Bonds [Member] | Tax Exempt Revenue Bonds [Member]
Long-term Debt (Numeric) [Abstract]
Minimum length of time to convert interest rate mode					1 year
Aggregate amount of tax-exempt revenue bonds in a term rate mode		356			$ 356
Aggregate amount of tax-exempt revenue bonds in a variable rate mode		33			33
Kentucky Utilities Co [Member] | First Mortgage Bonds [Member] | Environmental Facilities Revenue Bonds Due 2054
Long-term Debt (Numeric) [Abstract]
Principal amount		$ 60			$ 60
Stated interest rate		4.70%			4.70%
Aggregate maturities of long-term debt (Details) [Abstract]
Proceeds from Issuance of First Mortgage Bond		$ 37
Restricted Cash		$ 23			$ 23
Kentucky Utilities Co [Member] | First Mortgage Bonds [Member] | First Mortgage Bonds Due 2033
Long-term Debt (Numeric) [Abstract]
Principal amount			$ 400
Stated interest rate			5.45%
Aggregate maturities of long-term debt (Details) [Abstract]
Proceeds from Issuance of First Mortgage Bond			$ 396