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Revenue from Contracts with Customers (Details) $ in Millions | 7 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2022 USD ($) | Dec. 31, 2024 USD ($) Days | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Revenue from contracts with customers [Line Items] |  |  |  |  |
Operating Revenues |  | $ 8,462 | $ 8,312 | $ 7,902 |
Reconciliation of Revenue from Contracts with Customers [Abstract] |  |  |  |  |
Alternative Revenue Programs |  | 5 | 1 | (92) |
Other Revenue |  | (23) | (23) | (24) |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 8,444 | 8,290 | 7,786 |
Credit loss from contract with customer [Abstract] |  |  |  |  |
Accounts Receivable, Credit Loss Expense (Reversal) |  | 103 | 79 | 70 |
Contract with Customer, Asset and Liability [Abstract] |  |  |  |  |
Contract with Customer, Liability | $ 34 | 39 | 43 | 34 | $ 42
Contract with Customer, Liability, Revenue Recognized |  | $ 26 | 21 | 25 |
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 Energy |  |  |  |  |
Revenue from contracts with customers [Line Items] |  |  |  |  |
Operating Revenues | 1,038 |  |  |  |
Contract with Customer, Asset and Liability [Abstract] |  |  |  |  |
Accounts Receivable Forgiven, AR Reserve |  |  | 23 | 23 |
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) | (79) |
Contract with Customer, Asset and Liability [Abstract] |  |  |  |  |
Utilities Operating Expense, Purchased Power |  | $ 175 |  |  |
Residential [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 4,162 | 3,747 | 3,583 |
Commercial [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 2,039 | 1,673 | 1,660 |
Industrial [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 773 | 712 | 756 |
Other [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 390 | 1,120 | 878 |
Wholesale Municipal [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 23 | 22 | 28 |
Wholesale Other [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 63 | 50 | 97 |
Transmission [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 994 | 966 | 784 |
Pennsylvania Regulated [Member] |  |  |  |  |
Revenue from contracts with customers [Line Items] |  |  |  |  |
Operating Revenues |  | 2,876 | 3,008 | 3,030 |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 2,842 | 2,998 | 2,960 |
Pennsylvania Regulated [Member] | Residential [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 1,502 | 1,649 | 1,647 |
Pennsylvania Regulated [Member] | Commercial [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 418 | 444 | 491 |
Pennsylvania Regulated [Member] | Industrial [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 47 | 55 | 85 |
Pennsylvania Regulated [Member] | Other [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 57 | 54 | 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 |  | 818 | 796 | 683 |
Kentucky Regulated [Member] |  |  |  |  |
Revenue from contracts with customers [Line Items] |  |  |  |  |
Operating Revenues |  | 3,562 | 3,452 | 3,811 |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 3,582 | 3,440 | 3,815 |
Kentucky Regulated [Member] | Residential [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 1,510 | 1,458 | 1,637 |
Kentucky Regulated [Member] | Commercial [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 1,028 | 1,001 | 1,068 |
Kentucky Regulated [Member] | Industrial [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 635 | 637 | 662 |
Kentucky Regulated [Member] | Other [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 323 | 272 | 323 |
Kentucky Regulated [Member] | Wholesale Municipal [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 23 | 22 | 28 |
Kentucky Regulated [Member] | Wholesale Other [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 63 | 50 | 97 |
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 |  | 0 | 1 | 23 |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  |  | 1 | 23 |
Corporate And Other [Member] | Residential [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  |  | 0 | 0 |
Corporate And Other [Member] | Commercial [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  |  | 0 | 0 |
Corporate And Other [Member] | Industrial [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  |  | 0 | 0 |
Corporate And Other [Member] | Other [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  |  | 1 | 23 |
Corporate And Other [Member] | Wholesale Municipal [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  |  | 0 | 0 |
Corporate And Other [Member] | Wholesale Other [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  |  | 0 | 0 |
Corporate And Other [Member] | Transmission [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  |  | 0 | 0 |
Rhode Island Regulated |  |  |  |  |
Revenue from contracts with customers [Line Items] |  |  |  |  |
Operating Revenues |  | 2,024 | 1,851 | 1,038 |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 2,020 | 1,851 | 988 |
Rhode Island Regulated | Residential [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 1,150 | 640 | 299 |
Rhode Island Regulated | Commercial [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 593 | 228 | 101 |
Rhode Island Regulated | Industrial [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 91 | 20 | 9 |
Rhode Island Regulated | Other [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 10 | 793 | 478 |
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 |  | 176 | 170 | 101 |
PPL Electric Utilities Corp [Member] |  |  |  |  |
Revenue from contracts with customers [Line Items] |  |  |  |  |
Operating Revenues |  | $ 2,876 | 3,008 | 3,030 |
Number Of Days Due From Invoice Date | Days |  | 21 |  |  |
Reconciliation of Revenue from Contracts with Customers [Abstract] |  |  |  |  |
Alternative Revenue Programs |  | $ (19) | 5 | (56) |
Other Revenue |  | (15) | (15) | (14) |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 2,842 | 2,998 | 2,960 |
Credit loss from contract with customer [Abstract] |  |  |  |  |
Accounts Receivable, Credit Loss Expense (Reversal) |  | 52 | 47 | 21 |
Contract with Customer, Asset and Liability [Abstract] |  |  |  |  |
Contract with Customer, Liability | 23 | 28 | 29 | 23 | 25
Contract with Customer, Liability, Revenue Recognized |  | 12 | 10 | 12 |
PPL Electric Utilities Corp [Member] | Residential [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 1,502 | 1,649 | 1,647 |
PPL Electric Utilities Corp [Member] | Commercial [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 418 | 444 | 491 |
PPL Electric Utilities Corp [Member] | Industrial [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 47 | 55 | 85 |
PPL Electric Utilities Corp [Member] | Other [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 57 | 54 | 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 |  | 818 | 796 | 683 |
Louisville Gas And Electric Co [Member] |  |  |  |  |
Revenue from contracts with customers [Line Items] |  |  |  |  |
Operating Revenues |  | $ 1,648 | 1,613 | 1,798 |
Number Of Days Due From Invoice Date | Days |  | 22 |  |  |
Reconciliation of Revenue from Contracts with Customers [Abstract] |  |  |  |  |
Alternative Revenue Programs |  | $ 13 | (1) | 9 |
Other Revenue |  | (4) | (4) | (6) |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 1,657 | 1,608 | 1,801 |
Credit loss from contract with customer [Abstract] |  |  |  |  |
Accounts Receivable, Credit Loss Expense (Reversal) |  | 4 | 4 | 6 |
Contract with Customer, Asset and Liability [Abstract] |  |  |  |  |
Contract with Customer, Liability | 5 | 5 | 6 | 5 | 6
Contract with Customer, Liability, Revenue Recognized |  | 6 | 5 | 6 |
Louisville Gas And Electric Co [Member] | Residential [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 754 | 751 | 835 |
Louisville Gas And Electric Co [Member] | Commercial [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 518 | 517 | 551 |
Louisville Gas And Electric Co [Member] | Industrial [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 188 | 189 | 199 |
Louisville Gas And Electric Co [Member] | Other [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 147 | 104 | 141 |
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 |  | 50 | 47 | 75 |
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 |  | $ 1,964 | 1,884 | 2,074 |
Number Of Days Due From Invoice Date | Days |  | 22 |  |  |
Reconciliation of Revenue from Contracts with Customers [Abstract] |  |  |  |  |
Alternative Revenue Programs |  | $ 16 | (5) | 5 |
Other Revenue |  | (4) | (4) | (4) |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 1,976 | 1,875 | 2,075 |
Credit loss from contract with customer [Abstract] |  |  |  |  |
Accounts Receivable, Credit Loss Expense (Reversal) |  | 4 | 2 | 6 |
Contract with Customer, Asset and Liability [Abstract] |  |  |  |  |
Contract with Customer, Liability | $ 6 | 6 | 7 | 6 | $ 6
Contract with Customer, Liability, Revenue Recognized |  | 7 | 6 | 6 |
Kentucky Utilities Co [Member] | Residential [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 756 | 707 | 802 |
Kentucky Utilities Co [Member] | Commercial [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 510 | 484 | 517 |
Kentucky Utilities Co [Member] | Industrial [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 447 | 448 | 463 |
Kentucky Utilities Co [Member] | Other [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 176 | 168 | 182 |
Kentucky Utilities Co [Member] | Wholesale Municipal [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 23 | 22 | 28 |
Kentucky Utilities Co [Member] | Wholesale Other [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | 64 | 46 | 83 |
Kentucky Utilities Co [Member] | Transmission [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenue from Contracts with Customers |  | $ 0 | $ 0 | $ 0 |

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