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Disaggregation of Revenue (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | $ 9,170 | $ 8,444 | $ 8,290
Pennsylvania Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 3,117 | 2,842 | 2,998
Kentucky Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 3,751 | 3,582 | 3,440
Corporate And Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers |  |  | 1
Rhode Island Regulated |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 2,302 | 2,020 | 1,851
Residential [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 4,521 | 4,162 | 3,747
Residential [Member] | Pennsylvania Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 1,656 | 1,502 | 1,649
Residential [Member] | Kentucky Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 1,616 | 1,510 | 1,458
Residential [Member] | Corporate And Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers |  |  | 0
Residential [Member] | Rhode Island Regulated |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 1,249 | 1,150 | 640
Residential [Member] | Rhode Island Regulated | Reclassification, Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 534 | 469 |
Commercial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 2,182 | 2,039 | 1,673
Commercial [Member] | Pennsylvania Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 448 | 418 | 444
Commercial [Member] | Kentucky Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 1,063 | 1,028 | 1,001
Commercial [Member] | Corporate And Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers |  |  | 0
Commercial [Member] | Rhode Island Regulated |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 671 | 593 | 228
Commercial [Member] | Rhode Island Regulated | Reclassification, Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 409 | 372 |
Industrial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 766 | 773 | 712
Industrial [Member] | Pennsylvania Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 56 | 47 | 55
Industrial [Member] | Kentucky Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 627 | 635 | 637
Industrial [Member] | Corporate And Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers |  |  | 0
Industrial [Member] | Rhode Island Regulated |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 83 | 91 | 20
Industrial [Member] | Rhode Island Regulated | Reclassification, Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 83 | 88 |
Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 449 | 390 | 1,120
Other [Member] | Pennsylvania Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 54 | 57 | 54
Other [Member] | Kentucky Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 309 | 323 | 272
Other [Member] | Corporate And Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers |  |  | 1
Other [Member] | Rhode Island Regulated |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 86 | 10 | 793
Wholesale Municipal [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 25 | 23 | 22
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 | 25 | 23 | 22
Wholesale Municipal [Member] | Corporate And Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers |  |  | 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 | 111 | 63 | 50
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 | 111 | 63 | 50
Wholesale Other [Member] | Corporate And Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers |  |  | 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 | 1,116 | 994 | 966
Transmission [Member] | Pennsylvania Regulated [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 903 | 818 | 796
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
Transmission [Member] | Rhode Island Regulated |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 213 | 176 | 170
PPL Electric Utilities Corp [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 3,117 | 2,842 | 2,998
PPL Electric Utilities Corp [Member] | Residential [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 1,656 | 1,502 | 1,649
PPL Electric Utilities Corp [Member] | Commercial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 448 | 418 | 444
PPL Electric Utilities Corp [Member] | Industrial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 56 | 47 | 55
PPL Electric Utilities Corp [Member] | Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 54 | 57 | 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 | 903 | 818 | 796
Kentucky Utilities Co [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 2,060 | 1,976 | 1,875
Kentucky Utilities Co [Member] | Residential [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 807 | 756 | 707
Kentucky Utilities Co [Member] | Commercial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 523 | 510 | 484
Kentucky Utilities Co [Member] | Industrial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 440 | 447 | 448
Kentucky Utilities Co [Member] | Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 169 | 176 | 168
Kentucky Utilities Co [Member] | Wholesale Municipal [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 25 | 23 | 22
Kentucky Utilities Co [Member] | Wholesale Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 96 | 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 | 1,742 | 1,657 | 1,608
LOUISVILLE GAS And ELECTRIC CO [Member] | Residential [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 809 | 754 | 751
LOUISVILLE GAS And ELECTRIC CO [Member] | Commercial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 540 | 518 | 517
LOUISVILLE GAS And ELECTRIC CO [Member] | Industrial [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 187 | 188 | 189
LOUISVILLE GAS And ELECTRIC CO [Member] | Other [Member] |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenue from Contracts with Customers | 139 | 147 | 104
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 | 67 | 50 | 47
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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