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v3.20.2

Revenue from Contracts with Customers (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2021 | Dec. 31, 2019 | Dec. 31, 2018
Reconciliation of Revenue from Contracts with Customers [Abstract] |  |  |  |  |  |  |
Operating Revenues | $ 1,739 | $ 1,803 | $ 3,793 | $ 3,882 |  |  |
Alternative Revenue Programs | (8) | (20) | (11) | (26) |  |  |
Other Revenue | (7) | (10) | (17) | (19) |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 1,724 | 1,773 | 3,765 | 3,837 |  |  |
Contract with Customer, Asset and Liability [Abstract] |  |  |  |  |  |  |
Accounts Receivable, Credit Loss Expense (Reversal) | 7 | 2 | 15 | 11 |  |  |
Contract with Customer, Liability | 37 | 47 | 37 | 47 |  | $ 44 | $ 42
Contract with Customer, Liability, Revenue Recognized |  |  | 28 | 29 |  |  |
Licensed energy suppliers [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 449 | 510 | 1,032 | 1,066 |  |  |
Residential [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 583 | 572 | 1,297 | 1,350 |  |  |
Commercial [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 274 | 302 | 586 | 621 |  |  |
Industrial [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 134 | 156 | 278 | 306 |  |  |
Other [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 108 | 117 | 224 | 232 |  |  |
Wholesale - municipal [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 3 | 4 | 8 | 32 |  |  |
Wholesale - other [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 9 | 11 | 17 | 24 |  |  |
Transmission [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 164 | 101 | 323 | 206 |  |  |
Pennsylvania Regulated [Member] |  |  |  |  |  |  |
Reconciliation of Revenue from Contracts with Customers [Abstract] |  |  |  |  |  |  |
Operating Revenues | 554 | 521 | 1,162 | 1,166 |  |  |
United Kingdom Regulated [Member] |  |  |  |  |  |  |
Reconciliation of Revenue from Contracts with Customers [Abstract] |  |  |  |  |  |  |
Operating Revenues | 476 | 541 | 1,090 | 1,124 |  |  |
Kentucky Regulated [Member] |  |  |  |  |  |  |
Reconciliation of Revenue from Contracts with Customers [Abstract] |  |  |  |  |  |  |
Operating Revenues | 700 | 732 | 1,525 | 1,577 |  |  |
Corporate and Other [Member] |  |  |  |  |  |  |
Reconciliation of Revenue from Contracts with Customers [Abstract] |  |  |  |  |  |  |
Operating Revenues | 9 | 9 | 16 | 15 |  |  |
Corporate and Other [Member] | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-06-30 |  |  |  |  |  |  |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |  |  |  |  |  |
Revenue, Remaining Performance Obligation, Amount | 30 |  | 30 |  |  |  |
Corporate and Other [Member] | Forecast [Member] | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-06-30 |  |  |  |  |  |  |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] |  |  |  |  |  |  |
Revenue, Remaining Performance Obligation, Amount |  |  |  |  | $ 29 |  |
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 | 554 | 521 | 1,162 | 1,166 |  |  |
Alternative Revenue Programs | (1) | (2) | (1) | (6) |  |  |
Other Revenue | (1) | (2) | (3) | (5) |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 552 | 517 | 1,158 | 1,155 |  |  |
Contract with Customer, Asset and Liability [Abstract] |  |  |  |  |  |  |
Accounts Receivable, Credit Loss Expense (Reversal) | 5 | 0 | 9 | 6 |  |  |
Contract with Customer, Liability | 16 | 22 | 16 | 22 |  | 21 | 23
Contract with Customer, Liability, Revenue Recognized |  |  | 9 | 11 |  |  |
PPL Electric Utilities Corp [Member] | Licensed energy suppliers [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 0 | 0 | 0 | 0 |  |  |
PPL Electric Utilities Corp [Member] | Residential [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 290 | 301 | 634 | 708 |  |  |
PPL Electric Utilities Corp [Member] | Commercial [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 74 | 87 | 155 | 182 |  |  |
PPL Electric Utilities Corp [Member] | Industrial [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 12 | 15 | 20 | 32 |  |  |
PPL Electric Utilities Corp [Member] | Other [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 12 | 13 | 26 | 27 |  |  |
PPL Electric Utilities Corp [Member] | Wholesale - municipal [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 0 | 0 | 0 | 0 |  |  |
PPL Electric Utilities Corp [Member] | Wholesale - other [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 0 | 0 | 0 | 0 |  |  |
PPL Electric Utilities Corp [Member] | Distribution [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 388 | 416 | 835 | 949 |  |  |
PPL Electric Utilities Corp [Member] | Transmission [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 164 | 101 | 323 | 206 |  |  |
LG And E And KU Energy LLC [Member] |  |  |  |  |  |  |
Reconciliation of Revenue from Contracts with Customers [Abstract] |  |  |  |  |  |  |
Operating Revenues | 700 | 732 | 1,525 | 1,577 |  |  |
Alternative Revenue Programs | (7) | (18) | (10) | (20) |  |  |
Other Revenue | (4) | (6) | (10) | (10) |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 689 | 708 | 1,505 | 1,547 |  |  |
Contract with Customer, Asset and Liability [Abstract] |  |  |  |  |  |  |
Accounts Receivable, Credit Loss Expense (Reversal) | 1 | 1 | 3 | 3 |  |  |
Contract with Customer, Liability | 9 | 9 | 9 | 9 |  | 9 | 9
Contract with Customer, Liability, Revenue Recognized |  |  | 9 | 9 |  |  |
LG And E And KU Energy LLC [Member] | Licensed energy suppliers [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 0 | 0 | 0 | 0 |  |  |
LG And E And KU Energy LLC [Member] | Residential [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 293 | 271 | 663 | 642 |  |  |
LG And E And KU Energy LLC [Member] | Commercial [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 200 | 215 | 431 | 439 |  |  |
LG And E And KU Energy LLC [Member] | Industrial [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 122 | 141 | 258 | 274 |  |  |
LG And E And KU Energy LLC [Member] | Other [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 62 | 66 | 128 | 136 |  |  |
LG And E And KU Energy LLC [Member] | Wholesale - municipal [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 3 | 4 | 8 | 32 |  |  |
LG And E And KU Energy LLC [Member] | Wholesale - other [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 9 | 11 | 17 | 24 |  |  |
LG And E And KU Energy LLC [Member] | Transmission [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 0 | 0 | 0 | 0 |  |  |
Louisville Gas And Electric Co [Member] |  |  |  |  |  |  |
Reconciliation of Revenue from Contracts with Customers [Abstract] |  |  |  |  |  |  |
Operating Revenues | 322 | 334 | 729 | 744 |  |  |
Alternative Revenue Programs | (1) | (3) | (4) | (5) |  |  |
Other Revenue | (1) | (3) | (4) | (4) |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 320 | 328 | 721 | 735 |  |  |
Contract with Customer, Asset and Liability [Abstract] |  |  |  |  |  |  |
Accounts Receivable, Credit Loss Expense (Reversal) | 0 | 0 | 1 | 1 |  |  |
Contract with Customer, Liability | 4 | 5 | 4 | 5 |  | 5 | 5
Contract with Customer, Liability, Revenue Recognized |  |  | 5 | 5 |  |  |
Louisville Gas And Electric Co [Member] | Licensed energy suppliers [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 0 | 0 | 0 | 0 |  |  |
Louisville Gas And Electric Co [Member] | Residential [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 149 | 138 | 336 | 327 |  |  |
Louisville Gas And Electric Co [Member] | Commercial [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 100 | 108 | 224 | 229 |  |  |
Louisville Gas And Electric Co [Member] | Industrial [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 38 | 43 | 83 | 87 |  |  |
Louisville Gas And Electric Co [Member] | Other [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 28 | 29 | 56 | 62 |  |  |
Louisville Gas And Electric Co [Member] | Wholesale - municipal [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 0 | 0 | 0 | 0 |  |  |
Louisville Gas And Electric Co [Member] | Wholesale - other [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 5 | 10 | 22 | 30 |  |  |
Louisville Gas And Electric Co [Member] | Transmission [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 0 | 0 | 0 | 0 |  |  |
Kentucky Utilities Co [Member] |  |  |  |  |  |  |
Reconciliation of Revenue from Contracts with Customers [Abstract] |  |  |  |  |  |  |
Operating Revenues | 388 | 406 | 820 | 856 |  |  |
Alternative Revenue Programs | (6) | (15) | (6) | (15) |  |  |
Other Revenue | (3) | (3) | (6) | (6) |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 379 | 388 | 808 | 835 |  |  |
Contract with Customer, Asset and Liability [Abstract] |  |  |  |  |  |  |
Accounts Receivable, Credit Loss Expense (Reversal) | 1 | 1 | 2 | 2 |  |  |
Contract with Customer, Liability | 5 | 4 | 5 | 4 |  | $ 4 | $ 4
Contract with Customer, Liability, Revenue Recognized |  |  | 4 | 4 |  |  |
Kentucky Utilities Co [Member] | Licensed energy suppliers [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 0 | 0 | 0 | 0 |  |  |
Kentucky Utilities Co [Member] | Residential [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 144 | 133 | 327 | 315 |  |  |
Kentucky Utilities Co [Member] | Commercial [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 100 | 107 | 207 | 210 |  |  |
Kentucky Utilities Co [Member] | Industrial [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 84 | 98 | 175 | 187 |  |  |
Kentucky Utilities Co [Member] | Other [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 34 | 37 | 72 | 74 |  |  |
Kentucky Utilities Co [Member] | Wholesale - municipal [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 3 | 4 | 8 | 32 |  |  |
Kentucky Utilities Co [Member] | Wholesale - other [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | 14 | 9 | 19 | 17 |  |  |
Kentucky Utilities Co [Member] | Transmission [Member] |  |  |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |  |  |
Revenues from Contracts with Customers | $ 0 | $ 0 | $ 0 | $ 0 |  |  |

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