Revenue from Contracts with Customers (Details) $ in Millions	7 Months Ended	12 Months Ended
	Dec. 31, 2022 USD ($)	Dec. 31, 2024 USD ($) Days	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Revenue from contracts with customers [Line Items]
Operating Revenues		$ 8,462	$ 8,312	$ 7,902
Reconciliation of Revenue from Contracts with Customers [Abstract]
Alternative Revenue Programs		5	1	(92)
Other Revenue		(23)	(23)	(24)
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		8,444	8,290	7,786
Credit loss from contract with customer [Abstract]
Accounts Receivable, Credit Loss Expense (Reversal)		103	79	70
Contract with Customer, Asset and Liability [Abstract]
Contract with Customer, Liability	$ 34	39	43	34	$ 42
Contract with Customer, Liability, Revenue Recognized		$ 26	21	25
PPL Electric [Member]
Revenue from contracts with customers [Line Items]
Number Of Days Due From Invoice Date | Days		21
KU [Member]
Revenue from contracts with customers [Line Items]
Number Of Days Due From Invoice Date | Days		22
LGE [Member]
Revenue from contracts with customers [Line Items]
Number Of Days Due From Invoice Date | Days		22
Rhode Island Energy
Revenue from contracts with customers [Line Items]
Operating Revenues	1,038
Contract with Customer, Asset and Liability [Abstract]
Accounts Receivable Forgiven, AR Reserve			23	23
Rhode Island Regulated
Revenue from contracts with customers [Line Items]
Number Of Days Due From Invoice Date | Days		21
Rhode Island Regulated | Net Metering
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers			(146)	(79)
Contract with Customer, Asset and Liability [Abstract]
Utilities Operating Expense, Purchased Power		$ 175
Residential [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		4,162	3,747	3,583
Commercial [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		2,039	1,673	1,660
Industrial [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		773	712	756
Other [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		390	1,120	878
Wholesale Municipal [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		23	22	28
Wholesale Other [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		63	50	97
Transmission [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		994	966	784
Pennsylvania Regulated [Member]
Revenue from contracts with customers [Line Items]
Operating Revenues		2,876	3,008	3,030
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		2,842	2,998	2,960
Pennsylvania Regulated [Member] | Residential [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		1,502	1,649	1,647
Pennsylvania Regulated [Member] | Commercial [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		418	444	491
Pennsylvania Regulated [Member] | Industrial [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		47	55	85
Pennsylvania Regulated [Member] | Other [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		57	54	54
Pennsylvania Regulated [Member] | Wholesale Municipal [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		0	0	0
Pennsylvania Regulated [Member] | Wholesale Other [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		0	0	0
Pennsylvania Regulated [Member] | Transmission [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		818	796	683
Kentucky Regulated [Member]
Revenue from contracts with customers [Line Items]
Operating Revenues		3,562	3,452	3,811
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		3,582	3,440	3,815
Kentucky Regulated [Member] | Residential [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		1,510	1,458	1,637
Kentucky Regulated [Member] | Commercial [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		1,028	1,001	1,068
Kentucky Regulated [Member] | Industrial [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		635	637	662
Kentucky Regulated [Member] | Other [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		323	272	323
Kentucky Regulated [Member] | Wholesale Municipal [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		23	22	28
Kentucky Regulated [Member] | Wholesale Other [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		63	50	97
Kentucky Regulated [Member] | Transmission [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		0	0	0
Corporate And Other [Member]
Revenue from contracts with customers [Line Items]
Operating Revenues		0	1	23
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers			1	23
Corporate And Other [Member] | Residential [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers			0	0
Corporate And Other [Member] | Commercial [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers			0	0
Corporate And Other [Member] | Industrial [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers			0	0
Corporate And Other [Member] | Other [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers			1	23
Corporate And Other [Member] | Wholesale Municipal [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers			0	0
Corporate And Other [Member] | Wholesale Other [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers			0	0
Corporate And Other [Member] | Transmission [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers			0	0
Rhode Island Regulated
Revenue from contracts with customers [Line Items]
Operating Revenues		2,024	1,851	1,038
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		2,020	1,851	988
Rhode Island Regulated | Residential [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		1,150	640	299
Rhode Island Regulated | Commercial [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		593	228	101
Rhode Island Regulated | Industrial [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		91	20	9
Rhode Island Regulated | Other [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		10	793	478
Rhode Island Regulated | Wholesale Municipal [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		0	0	0
Rhode Island Regulated | Wholesale Other [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		0	0	0
Rhode Island Regulated | Transmission [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		176	170	101
PPL Electric Utilities Corp [Member]
Revenue from contracts with customers [Line Items]
Operating Revenues		$ 2,876	3,008	3,030
Number Of Days Due From Invoice Date | Days		21
Reconciliation of Revenue from Contracts with Customers [Abstract]
Alternative Revenue Programs		$ (19)	5	(56)
Other Revenue		(15)	(15)	(14)
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		2,842	2,998	2,960
Credit loss from contract with customer [Abstract]
Accounts Receivable, Credit Loss Expense (Reversal)		52	47	21
Contract with Customer, Asset and Liability [Abstract]
Contract with Customer, Liability	23	28	29	23	25
Contract with Customer, Liability, Revenue Recognized		12	10	12
PPL Electric Utilities Corp [Member] | Residential [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		1,502	1,649	1,647
PPL Electric Utilities Corp [Member] | Commercial [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		418	444	491
PPL Electric Utilities Corp [Member] | Industrial [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		47	55	85
PPL Electric Utilities Corp [Member] | Other [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		57	54	54
PPL Electric Utilities Corp [Member] | Wholesale Municipal [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		0	0	0
PPL Electric Utilities Corp [Member] | Wholesale Other [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		0	0	0
PPL Electric Utilities Corp [Member] | Transmission [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		818	796	683
Louisville Gas And Electric Co [Member]
Revenue from contracts with customers [Line Items]
Operating Revenues		$ 1,648	1,613	1,798
Number Of Days Due From Invoice Date | Days		22
Reconciliation of Revenue from Contracts with Customers [Abstract]
Alternative Revenue Programs		$ 13	(1)	9
Other Revenue		(4)	(4)	(6)
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		1,657	1,608	1,801
Credit loss from contract with customer [Abstract]
Accounts Receivable, Credit Loss Expense (Reversal)		4	4	6
Contract with Customer, Asset and Liability [Abstract]
Contract with Customer, Liability	5	5	6	5	6
Contract with Customer, Liability, Revenue Recognized		6	5	6
Louisville Gas And Electric Co [Member] | Residential [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		754	751	835
Louisville Gas And Electric Co [Member] | Commercial [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		518	517	551
Louisville Gas And Electric Co [Member] | Industrial [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		188	189	199
Louisville Gas And Electric Co [Member] | Other [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		147	104	141
Louisville Gas And Electric Co [Member] | Wholesale Municipal [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		0	0	0
Louisville Gas And Electric Co [Member] | Wholesale Other [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		50	47	75
Louisville Gas And Electric Co [Member] | Transmission [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		0	0	0
Kentucky Utilities Co [Member]
Revenue from contracts with customers [Line Items]
Operating Revenues		$ 1,964	1,884	2,074
Number Of Days Due From Invoice Date | Days		22
Reconciliation of Revenue from Contracts with Customers [Abstract]
Alternative Revenue Programs		$ 16	(5)	5
Other Revenue		(4)	(4)	(4)
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		1,976	1,875	2,075
Credit loss from contract with customer [Abstract]
Accounts Receivable, Credit Loss Expense (Reversal)		4	2	6
Contract with Customer, Asset and Liability [Abstract]
Contract with Customer, Liability	$ 6	6	7	6	$ 6
Contract with Customer, Liability, Revenue Recognized		7	6	6
Kentucky Utilities Co [Member] | Residential [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		756	707	802
Kentucky Utilities Co [Member] | Commercial [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		510	484	517
Kentucky Utilities Co [Member] | Industrial [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		447	448	463
Kentucky Utilities Co [Member] | Other [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		176	168	182
Kentucky Utilities Co [Member] | Wholesale Municipal [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		23	22	28
Kentucky Utilities Co [Member] | Wholesale Other [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		64	46	83
Kentucky Utilities Co [Member] | Transmission [Member]
Disaggregation of Revenue [Abstract]
Revenue from Contracts with Customers		$ 0	$ 0	$ 0