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Disaggregation of Revenue (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | $ 8,444 | $ 8,290 | $ 7,786
Pennsylvania Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 2,842 | 2,998 | 2,960
Kentucky Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 3,582 | 3,440 | 3,815
Corporate And Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers |  | 1 | 23
Rhode Island Regulated |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 2,020 | 1,851 | 988
Residential [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 4,162 | 3,747 | 3,583
Residential [Member] | Pennsylvania Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 1,502 | 1,649 | 1,647
Residential [Member] | Kentucky Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 1,510 | 1,458 | 1,637
Residential [Member] | Corporate And Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers |  | 0 | 0
Residential [Member] | Rhode Island Regulated |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 1,150 | 640 | 299
Residential [Member] | Rhode Island Regulated | Reclassification, Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 469 |  |
Commercial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 2,039 | 1,673 | 1,660
Commercial [Member] | Pennsylvania Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 418 | 444 | 491
Commercial [Member] | Kentucky Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 1,028 | 1,001 | 1,068
Commercial [Member] | Corporate And Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers |  | 0 | 0
Commercial [Member] | Rhode Island Regulated |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 593 | 228 | 101
Commercial [Member] | Rhode Island Regulated | Reclassification, Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 372 |  |
Industrial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 773 | 712 | 756
Industrial [Member] | Pennsylvania Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 47 | 55 | 85
Industrial [Member] | Kentucky Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 635 | 637 | 662
Industrial [Member] | Corporate And Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers |  | 0 | 0
Industrial [Member] | Rhode Island Regulated |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 91 | 20 | 9
Industrial [Member] | Rhode Island Regulated | Reclassification, Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 88 |  |
Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 390 | 1,120 | 878
Other [Member] | Pennsylvania Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 57 | 54 | 54
Other [Member] | Kentucky Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 323 | 272 | 323
Other [Member] | Corporate And Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers |  | 1 | 23
Other [Member] | Rhode Island Regulated |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 10 | 793 | 478
Wholesale Municipal [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 23 | 22 | 28
Wholesale Municipal [Member] | Pennsylvania Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 0 | 0 | 0
Wholesale Municipal [Member] | Kentucky Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 23 | 22 | 28
Wholesale Municipal [Member] | Corporate And Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers |  | 0 | 0
Wholesale Municipal [Member] | Rhode Island Regulated |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 0 | 0 | 0
Wholesale Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 63 | 50 | 97
Wholesale Other [Member] | Pennsylvania Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 0 | 0 | 0
Wholesale Other [Member] | Kentucky Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 63 | 50 | 97
Wholesale Other [Member] | Corporate And Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers |  | 0 | 0
Wholesale Other [Member] | Rhode Island Regulated |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 0 | 0 | 0
Transmission [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 994 | 966 | 784
Transmission [Member] | Pennsylvania Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 818 | 796 | 683
Transmission [Member] | Kentucky Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 0 | 0 | 0
Transmission [Member] | Corporate And Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers |  | 0 | 0
Transmission [Member] | Rhode Island Regulated |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 176 | 170 | 101
PPL Electric Utilities Corp [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 2,842 | 2,998 | 2,960
PPL Electric Utilities Corp [Member] | Residential [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 1,502 | 1,649 | 1,647
PPL Electric Utilities Corp [Member] | Commercial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 418 | 444 | 491
PPL Electric Utilities Corp [Member] | Industrial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 47 | 55 | 85
PPL Electric Utilities Corp [Member] | Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 57 | 54 | 54
PPL Electric Utilities Corp [Member] | Wholesale Municipal [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 0 | 0 | 0
PPL Electric Utilities Corp [Member] | Wholesale Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 0 | 0 | 0
PPL Electric Utilities Corp [Member] | Transmission [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 818 | 796 | 683
Kentucky Utilities Co [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 1,976 | 1,875 | 2,075
Kentucky Utilities Co [Member] | Residential [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 756 | 707 | 802
Kentucky Utilities Co [Member] | Commercial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 510 | 484 | 517
Kentucky Utilities Co [Member] | Industrial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 447 | 448 | 463
Kentucky Utilities Co [Member] | Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 176 | 168 | 182
Kentucky Utilities Co [Member] | Wholesale Municipal [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 23 | 22 | 28
Kentucky Utilities Co [Member] | Wholesale Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 64 | 46 | 83
Kentucky Utilities Co [Member] | Transmission [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 0 | 0 | 0
LOUISVILLE GAS And ELECTRIC CO [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 1,657 | 1,608 | 1,801
LOUISVILLE GAS And ELECTRIC CO [Member] | Residential [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 754 | 751 | 835
LOUISVILLE GAS And ELECTRIC CO [Member] | Commercial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 518 | 517 | 551
LOUISVILLE GAS And ELECTRIC CO [Member] | Industrial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 188 | 189 | 199
LOUISVILLE GAS And ELECTRIC CO [Member] | Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 147 | 104 | 141
LOUISVILLE GAS And ELECTRIC CO [Member] | Wholesale Municipal [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 0 | 0 | 0
LOUISVILLE GAS And ELECTRIC CO [Member] | Wholesale Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 50 | 47 | 75
LOUISVILLE GAS And ELECTRIC CO [Member] | Transmission [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | $ 0 | $ 0 | $ 0

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