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v3.25.4

Revenue from Contracts with Customers (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2025 USD ($) Days | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
Revenue from contracts with customers [Line Items] |  |  |
Operating Revenues | $ 9,042 | $ 8,462 | $ 8,312
Reconciliation of Revenue from Contracts with Customers [Abstract] |  |  |
Alternative Revenue Programs | 153 | 5 | 1
Other Revenue | (25) | (23) | (23)
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 9,170 | 8,444 | 8,290
Credit loss from contract with customer [Abstract] |  |  |
Accounts Receivable, Credit Loss Expense (Reversal) | $ 101 | 103 | 79
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 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)
Residential [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | $ 4,521 | 4,162 | 3,747
Commercial [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 2,182 | 2,039 | 1,673
Industrial [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 766 | 773 | 712
Other [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 449 | 390 | 1,120
Wholesale Municipal [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 25 | 23 | 22
Wholesale Other [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 111 | 63 | 50
Transmission [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 1,116 | 994 | 966
Pennsylvania Regulated [Member] |  |  |
Revenue from contracts with customers [Line Items] |  |  |
Operating Revenues | 3,113 | 2,876 | 3,008
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 3,117 | 2,842 | 2,998
Pennsylvania Regulated [Member] | Residential [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 1,656 | 1,502 | 1,649
Pennsylvania Regulated [Member] | Commercial [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 448 | 418 | 444
Pennsylvania Regulated [Member] | Industrial [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 56 | 47 | 55
Pennsylvania Regulated [Member] | Other [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 54 | 57 | 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 | 903 | 818 | 796
Kentucky Regulated [Member] |  |  |
Revenue from contracts with customers [Line Items] |  |  |
Operating Revenues | 3,760 | 3,562 | 3,452
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 3,751 | 3,582 | 3,440
Kentucky Regulated [Member] | Residential [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 1,616 | 1,510 | 1,458
Kentucky Regulated [Member] | Commercial [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 1,063 | 1,028 | 1,001
Kentucky Regulated [Member] | Industrial [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 627 | 635 | 637
Kentucky Regulated [Member] | Other [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 309 | 323 | 272
Kentucky Regulated [Member] | Wholesale Municipal [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 25 | 23 | 22
Kentucky Regulated [Member] | Wholesale Other [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 111 | 63 | 50
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 | 1 | 0 | 1
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers |  |  | 1
Corporate And Other [Member] | Residential [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers |  |  | 0
Corporate And Other [Member] | Commercial [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers |  |  | 0
Corporate And Other [Member] | Industrial [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers |  |  | 0
Corporate And Other [Member] | Other [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers |  |  | 1
Corporate And Other [Member] | Wholesale Municipal [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers |  |  | 0
Corporate And Other [Member] | Wholesale Other [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers |  |  | 0
Corporate And Other [Member] | Transmission [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers |  |  | 0
Rhode Island Regulated |  |  |
Revenue from contracts with customers [Line Items] |  |  |
Operating Revenues | 2,168 | 2,024 | 1,851
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 2,302 | 2,020 | 1,851
Rhode Island Regulated | Residential [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 1,249 | 1,150 | 640
Rhode Island Regulated | Commercial [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 671 | 593 | 228
Rhode Island Regulated | Industrial [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 83 | 91 | 20
Rhode Island Regulated | Other [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 86 | 10 | 793
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 | 213 | 176 | 170
PPL Electric Utilities Corp [Member] |  |  |
Revenue from contracts with customers [Line Items] |  |  |
Operating Revenues | $ 3,113 | 2,876 | 3,008
Number Of Days Due From Invoice Date | Days | 21 |  |
Reconciliation of Revenue from Contracts with Customers [Abstract] |  |  |
Alternative Revenue Programs | $ 21 | (19) | 5
Other Revenue | (17) | (15) | (15)
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 3,117 | 2,842 | 2,998
Credit loss from contract with customer [Abstract] |  |  |
Accounts Receivable, Credit Loss Expense (Reversal) | 32 | 52 | 47
PPL Electric Utilities Corp [Member] | Residential [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 1,656 | 1,502 | 1,649
PPL Electric Utilities Corp [Member] | Commercial [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 448 | 418 | 444
PPL Electric Utilities Corp [Member] | Industrial [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 56 | 47 | 55
PPL Electric Utilities Corp [Member] | Other [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 54 | 57 | 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 | 903 | 818 | 796
Louisville Gas And Electric Co [Member] |  |  |
Revenue from contracts with customers [Line Items] |  |  |
Operating Revenues | $ 1,748 | 1,648 | 1,613
Number Of Days Due From Invoice Date | Days | 22 |  |
Reconciliation of Revenue from Contracts with Customers [Abstract] |  |  |
Alternative Revenue Programs | $ (2) | 13 | (1)
Other Revenue | (4) | (4) | (4)
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 1,742 | 1,657 | 1,608
Credit loss from contract with customer [Abstract] |  |  |
Accounts Receivable, Credit Loss Expense (Reversal) | 4 | 4 | 4
Louisville Gas And Electric Co [Member] | Residential [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 809 | 754 | 751
Louisville Gas And Electric Co [Member] | Commercial [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 540 | 518 | 517
Louisville Gas And Electric Co [Member] | Industrial [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 187 | 188 | 189
Louisville Gas And Electric Co [Member] | Other [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 139 | 147 | 104
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 | 67 | 50 | 47
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 | $ 2,064 | 1,964 | 1,884
Number Of Days Due From Invoice Date | Days | 22 |  |
Reconciliation of Revenue from Contracts with Customers [Abstract] |  |  |
Alternative Revenue Programs | $ 0 | 16 | (5)
Other Revenue | (4) | (4) | (4)
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 2,060 | 1,976 | 1,875
Credit loss from contract with customer [Abstract] |  |  |
Accounts Receivable, Credit Loss Expense (Reversal) | 5 | 4 | 2
Kentucky Utilities Co [Member] | Residential [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 807 | 756 | 707
Kentucky Utilities Co [Member] | Commercial [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 523 | 510 | 484
Kentucky Utilities Co [Member] | Industrial [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 440 | 447 | 448
Kentucky Utilities Co [Member] | Other [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 169 | 176 | 168
Kentucky Utilities Co [Member] | Wholesale Municipal [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 25 | 23 | 22
Kentucky Utilities Co [Member] | Wholesale Other [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | 96 | 64 | 46
Kentucky Utilities Co [Member] | Transmission [Member] |  |  |
Disaggregation of Revenue [Abstract] |  |  |
Revenue from Contracts with Customers | $ 0 | $ 0 | $ 0

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