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v3.22.1

Revenue from Contracts with Customers (Details) - USD ($) $ in Millions | 3 Months Ended |  |  |
--- | --- | --- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Mar. 31, 2023 | Dec. 31, 2021 | Dec. 31, 2020
Reconciliation of Revenue from Contracts with Customers [Abstract] |  |  |  |  |
Operating Revenues | $ 1,782 | $ 1,498 |  |  |
Alternative Revenue Programs | (27) | 24 |  |  |
Other Revenue | (7) | (6) |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 1,748 | 1,516 |  |  |
Contract with Customer, Asset and Liability [Abstract] |  |  |  |  |
Accounts Receivable, Credit Loss Expense (Reversal) | 7 | 2 |  |  |
Contract with Customer, Liability | 33 | 33 |  | $ 42 | $ 40
Contract with Customer, Liability, Revenue Recognized | 22 | 21 |  |  |
Residential [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 931 | 774 |  |  |
Commercial [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 378 | 313 |  |  |
Industrial [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 169 | 152 |  |  |
Other [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 98 | 91 |  |  |
Wholesale - municipal [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 6 | 6 |  |  |
Wholesale - other [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 19 | 20 |  |  |
Transmission [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 147 | 160 |  |  |
Pennsylvania Regulated [Member] |  |  |  |  |
Reconciliation of Revenue from Contracts with Customers [Abstract] |  |  |  |  |
Operating Revenues | 775 | 605 |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 735 | 627 |  |  |
Pennsylvania Regulated [Member] | Residential [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 453 | 361 |  |  |
Pennsylvania Regulated [Member] | Commercial [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 108 | 82 |  |  |
Pennsylvania Regulated [Member] | Industrial [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 15 | 12 |  |  |
Pennsylvania Regulated [Member] | Other [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 12 | 12 |  |  |
Pennsylvania Regulated [Member] | Wholesale - municipal [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 0 | 0 |  |  |
Pennsylvania Regulated [Member] | Wholesale - other [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 0 | 0 |  |  |
Pennsylvania Regulated [Member] | Transmission [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 147 | 160 |  |  |
Kentucky Regulated [Member] |  |  |  |  |
Reconciliation of Revenue from Contracts with Customers [Abstract] |  |  |  |  |
Operating Revenues | 1,004 | 885 |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 1,010 | 881 |  |  |
Kentucky Regulated [Member] | Residential [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 478 | 413 |  |  |
Kentucky Regulated [Member] | Commercial [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 270 | 231 |  |  |
Kentucky Regulated [Member] | Industrial [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 154 | 140 |  |  |
Kentucky Regulated [Member] | Other [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 83 | 71 |  |  |
Kentucky Regulated [Member] | Wholesale - municipal [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 6 | 6 |  |  |
Kentucky Regulated [Member] | Wholesale - other [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 19 | 20 |  |  |
Kentucky Regulated [Member] | Transmission [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 0 | 0 |  |  |
Corporate and Other [Member] |  |  |  |  |
Reconciliation of Revenue from Contracts with Customers [Abstract] |  |  |  |  |
Operating Revenues | 3 | 8 |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 3 | 8 |  |  |
Corporate and Other [Member] | Residential [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 0 | 0 |  |  |
Corporate and Other [Member] | Commercial [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 0 | 0 |  |  |
Corporate and Other [Member] | Industrial [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 0 | 0 |  |  |
Corporate and Other [Member] | Other [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 3 | 8 |  |  |
Corporate and Other [Member] | Wholesale - municipal [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 0 | 0 |  |  |
Corporate and Other [Member] | Wholesale - other [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 0 | 0 |  |  |
Corporate and Other [Member] | Transmission [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 0 | 0 |  |  |
Corporate and Other [Member] | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-03-31 |  |  |  |  |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |  |  |  |
Revenue, Remaining Performance Obligation, Amount | 46 |  |  |  |
Corporate and Other [Member] | Forecast [Member] | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-03-31 |  |  |  |  |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |  |  |  |
Revenue, Remaining Performance Obligation, Amount |  |  | $ 30 |  |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period |  |  | 12 months |  |
PPL Electric Utilities Corp [Member] |  |  |  |  |
Reconciliation of Revenue from Contracts with Customers [Abstract] |  |  |  |  |
Operating Revenues | 775 | 605 |  |  |
Alternative Revenue Programs | (36) | 22 |  |  |
Other Revenue | (4) | 0 |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 735 | 627 |  |  |
Contract with Customer, Asset and Liability [Abstract] |  |  |  |  |
Accounts Receivable, Credit Loss Expense (Reversal) | 5 | 1 |  |  |
Contract with Customer, Liability | 17 | 16 |  | 25 | 23
Contract with Customer, Liability, Revenue Recognized | 10 | 9 |  |  |
Revenue Reserve for ROE Challenge | 27 |  |  |  |
Amortization of Revenue Reserve for ROE Challenge | 44 |  |  |  |
PPL Electric Utilities Corp [Member] | Residential [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 453 | 361 |  |  |
PPL Electric Utilities Corp [Member] | Commercial [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 108 | 82 |  |  |
PPL Electric Utilities Corp [Member] | Industrial [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 15 | 12 |  |  |
PPL Electric Utilities Corp [Member] | Other [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 12 | 12 |  |  |
PPL Electric Utilities Corp [Member] | Wholesale - municipal [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 0 | 0 |  |  |
PPL Electric Utilities Corp [Member] | Wholesale - other [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 0 | 0 |  |  |
PPL Electric Utilities Corp [Member] | Transmission [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 147 | 160 |  |  |
Louisville Gas And Electric Co [Member] |  |  |  |  |
Reconciliation of Revenue from Contracts with Customers [Abstract] |  |  |  |  |
Operating Revenues | 493 | 428 |  |  |
Alternative Revenue Programs | 6 | 0 |  |  |
Other Revenue | (2) | (3) |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 497 | 425 |  |  |
Contract with Customer, Asset and Liability [Abstract] |  |  |  |  |
Accounts Receivable, Credit Loss Expense (Reversal) | 1 | 0 |  |  |
Contract with Customer, Liability | 4 | 5 |  | 6 | 5
Contract with Customer, Liability, Revenue Recognized | 6 | 5 |  |  |
Louisville Gas And Electric Co [Member] | Residential [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 246 | 205 |  |  |
Louisville Gas And Electric Co [Member] | Commercial [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 146 | 121 |  |  |
Louisville Gas And Electric Co [Member] | Industrial [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 45 | 46 |  |  |
Louisville Gas And Electric Co [Member] | Other [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 39 | 34 |  |  |
Louisville Gas And Electric Co [Member] | Wholesale - municipal [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 0 | 0 |  |  |
Louisville Gas And Electric Co [Member] | Wholesale - other [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 21 | 19 |  |  |
Louisville Gas And Electric Co [Member] | Transmission [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 0 | 0 |  |  |
Kentucky Utilities Co [Member] |  |  |  |  |
Reconciliation of Revenue from Contracts with Customers [Abstract] |  |  |  |  |
Operating Revenues | 525 | 469 |  |  |
Alternative Revenue Programs | 3 | 2 |  |  |
Other Revenue | (1) | (3) |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 527 | 468 |  |  |
Contract with Customer, Asset and Liability [Abstract] |  |  |  |  |
Accounts Receivable, Credit Loss Expense (Reversal) | 1 | 1 |  |  |
Contract with Customer, Liability | 5 | 5 |  | $ 6 | $ 6
Contract with Customer, Liability, Revenue Recognized | 6 | 6 |  |  |
Kentucky Utilities Co [Member] | Residential [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 232 | 208 |  |  |
Kentucky Utilities Co [Member] | Commercial [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 124 | 110 |  |  |
Kentucky Utilities Co [Member] | Industrial [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 109 | 94 |  |  |
Kentucky Utilities Co [Member] | Other [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 44 | 37 |  |  |
Kentucky Utilities Co [Member] | Wholesale - municipal [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 6 | 6 |  |  |
Kentucky Utilities Co [Member] | Wholesale - other [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | 12 | 13 |  |  |
Kentucky Utilities Co [Member] | Transmission [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Revenues from Contracts with Customers | $ 0 | $ 0 |  |  |

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