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Disaggregation of Revenue (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | $ 7,786 | $ 5,838 | $ 5,429
Pennsylvania Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 2,960 | 2,482 | 2,316
Kentucky Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 3,815 | 3,325 | 3,077
Corporate And Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 23 | 31 | 36
Rhode Island Regulated |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 988 | 0 | 0
Residential [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 3,583 | 2,715 | 2,585
Residential [Member] | Pennsylvania Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 1,647 | 1,299 | 1,238
Residential [Member] | Kentucky Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 1,637 | 1,416 | 1,347
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 | 299 | 0 | 0
Commercial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 1,660 | 1,278 | 1,185
Commercial [Member] | Pennsylvania Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 491 | 350 | 314
Commercial [Member] | Kentucky Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 1,068 | 928 | 871
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 | 101 | 0 | 0
Industrial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 756 | 639 | 582
Industrial [Member] | Pennsylvania Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 85 | 53 | 44
Industrial [Member] | Kentucky Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 662 | 586 | 538
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 | 9 | 0 | 0
Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 878 | 386 | 347
Other [Member] | Pennsylvania Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 54 | 50 | 50
Other [Member] | Kentucky Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 323 | 305 | 261
Other [Member] | Corporate And Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 23 | 31 | 36
Other [Member] | Rhode Island Regulated |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 478 | 0 | 0
Wholesale Municipal [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 28 | 24 | 20
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 | 28 | 24 | 20
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 | 97 | 66 | 40
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 | 97 | 66 | 40
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 | 784 | 730 | 670
Transmission [Member] | Pennsylvania Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 683 | 730 | 670
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 | 101 | 0 | 0
PPL Electric Utilities Corp [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 2,960 | 2,482 | 2,316
PPL Electric Utilities Corp [Member] | Residential [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 1,647 | 1,299 | 1,238
PPL Electric Utilities Corp [Member] | Commercial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 491 | 350 | 314
PPL Electric Utilities Corp [Member] | Industrial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 85 | 53 | 44
PPL Electric Utilities Corp [Member] | Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 54 | 50 | 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 | 683 | 730 | 670
Kentucky Utilities Co [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 2,075 | 1,814 | 1,676
Kentucky Utilities Co [Member] | Residential [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 802 | 705 | 671
Kentucky Utilities Co [Member] | Commercial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 517 | 455 | 427
Kentucky Utilities Co [Member] | Industrial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 463 | 406 | 365
Kentucky Utilities Co [Member] | Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 182 | 160 | 147
Kentucky Utilities Co [Member] | Wholesale Municipal [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 28 | 24 | 20
Kentucky Utilities Co [Member] | Wholesale Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 83 | 64 | 46
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 | 1,801 | 1,558 | 1,441
LOUISVILLE GAS And ELECTRIC CO [Member] | Residential [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 835 | 711 | 676
LOUISVILLE GAS And ELECTRIC CO [Member] | Commercial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 551 | 473 | 444
LOUISVILLE GAS And ELECTRIC CO [Member] | Industrial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 199 | 180 | 173
LOUISVILLE GAS And ELECTRIC CO [Member] | Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 141 | 145 | 114
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 | 75 | 49 | 34
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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