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Disaggregation of Revenue (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | $ 8,290 | $ 7,786 | $ 5,838
Pennsylvania Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 2,998 | 2,960 | 2,482
Kentucky Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 3,440 | 3,815 | 3,325
Corporate And Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 1 | 23 | 31
Rhode Island Regulated |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 1,851 | 988 | 0
Residential [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 3,747 | 3,583 | 2,715
Residential [Member] | Pennsylvania Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 1,649 | 1,647 | 1,299
Residential [Member] | Kentucky Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 1,458 | 1,637 | 1,416
Residential [Member] | Corporate And Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 0 | 0 | 0
Residential [Member] | Rhode Island Regulated |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 640 | 299 | 0
Commercial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 1,673 | 1,660 | 1,278
Commercial [Member] | Pennsylvania Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 444 | 491 | 350
Commercial [Member] | Kentucky Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 1,001 | 1,068 | 928
Commercial [Member] | Corporate And Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 0 | 0 | 0
Commercial [Member] | Rhode Island Regulated |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 228 | 101 | 0
Industrial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 712 | 756 | 639
Industrial [Member] | Pennsylvania Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 55 | 85 | 53
Industrial [Member] | Kentucky Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 637 | 662 | 586
Industrial [Member] | Corporate And Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 0 | 0 | 0
Industrial [Member] | Rhode Island Regulated |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 20 | 9 | 0
Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 1,120 | 878 | 386
Other [Member] | Pennsylvania Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 54 | 54 | 50
Other [Member] | Kentucky Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 272 | 323 | 305
Other [Member] | Corporate And Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 1 | 23 | 31
Other [Member] | Rhode Island Regulated |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 793 | 478 | 0
Wholesale Municipal [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 22 | 28 | 24
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 | 22 | 28 | 24
Wholesale Municipal [Member] | Corporate And Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 0 | 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 | 50 | 97 | 66
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 | 50 | 97 | 66
Wholesale Other [Member] | Corporate And Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 0 | 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 | 966 | 784 | 730
Transmission [Member] | Pennsylvania Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 796 | 683 | 730
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 | 0
Transmission [Member] | Rhode Island Regulated |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 170 | 101 | 0
PPL Electric Utilities Corp [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 2,998 | 2,960 | 2,482
PPL Electric Utilities Corp [Member] | Residential [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 1,649 | 1,647 | 1,299
PPL Electric Utilities Corp [Member] | Commercial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 444 | 491 | 350
PPL Electric Utilities Corp [Member] | Industrial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 55 | 85 | 53
PPL Electric Utilities Corp [Member] | Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 54 | 54 | 50
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 | 796 | 683 | 730
Kentucky Utilities Co [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 1,875 | 2,075 | 1,814
Kentucky Utilities Co [Member] | Residential [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 707 | 802 | 705
Kentucky Utilities Co [Member] | Commercial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 484 | 517 | 455
Kentucky Utilities Co [Member] | Industrial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 448 | 463 | 406
Kentucky Utilities Co [Member] | Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 168 | 182 | 160
Kentucky Utilities Co [Member] | Wholesale Municipal [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 22 | 28 | 24
Kentucky Utilities Co [Member] | Wholesale Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 46 | 83 | 64
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 | 1,608 | 1,801 | 1,558
LOUISVILLE GAS And ELECTRIC CO [Member] | Residential [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 751 | 835 | 711
LOUISVILLE GAS And ELECTRIC CO [Member] | Commercial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 517 | 551 | 473
LOUISVILLE GAS And ELECTRIC CO [Member] | Industrial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 189 | 199 | 180
LOUISVILLE GAS And ELECTRIC CO [Member] | Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 104 | 141 | 145
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 | 47 | 75 | 49
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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