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v3.24.3

Acquisitions, Development and Divestitures - Development (Details) $ in Millions |  | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Nov. 06, 2023 MW | Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($) | Jun. 30, 2022 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($) | Dec. 31, 2023 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Transition Service Agreement Cost |  |  | $ 32 |  | $ 59 |  | $ 129 |  | $ 179 |
Goodwill |  |  | 2,247 |  |  |  | 2,247 |  |  | $ 2,247
Operating Revenues from external customers |  |  | 2,066 |  | 2,043 |  | 6,251 |  | 6,281 |
Net income (loss) |  |  | 214 |  | 230 |  | 711 |  | 627 |
Indemnification for Safari sale/leaseback |  |  |  |  |  |  | 25 |  |  |
Louisville Gas And Electric Co [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Goodwill |  |  | 389 |  |  |  | 389 |  |  | 389
Operating Revenues from external customers |  |  | 397 |  | 398 |  | 1,239 |  | 1,227 |
Net income (loss) |  |  | 77 | [1] | 79 |  | 232 | [1] | 210 |
New NGCC LG&E Planned Ownership Percentage |  | 31.00% |  |  |  |  |  |  |  |
CPCN NGCC Combustion Turbine Facilities Power | MW |  | 640 |  |  |  |  |  |  |  |
Kentucky Utilities Co [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Goodwill |  |  | 607 |  |  |  | 607 |  |  | 607
Operating Revenues from external customers |  |  | 509 |  | 505 |  | 1,498 |  | 1,439 |
Net income (loss) | [2] |  | 98 |  | 101 |  | 283 |  | 240 |
New NGCC KU Planned Ownership Percentage |  | 69.00% |  |  |  |  |  |  |  |
CPCN NGCC Combustion Turbine Facilities Power | MW |  | 640 |  |  |  |  |  |  |  |
Narragansett Electric |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Total cash consideration |  |  |  |  |  | $ 3,800 |  |  |  |
Rhode Island Regulated |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Operating Revenues from external customers |  |  | 455 |  | 413 |  | 1,393 |  | 1,355 | $ 1,400
Net income (loss) |  |  | 14 |  | 6 |  | 90 |  | 70 |
Corporate and Other [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Operating Revenues from external customers |  |  | 0 |  | 0 |  | 1 |  | 0 |
Net income (loss) |  |  | (111) |  | (87) |  | (313) |  | (259) |
Rhode Island Energy | Rhode Island Energy TSA |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Other Nonrecurring (Income) Expense |  |  | 85 |  | 69 |  | 250 |  | 193 |
Rhode Island Energy | Accrual for TSA Markup |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Other Nonrecurring (Income) Expense |  |  | 5 |  | $ 2 |  | 8 |  | $ 6 |
LGE [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
CPCN NGCC Combustion Turbine Facilities Power | MW |  | 640 |  |  |  |  |  |  |  |
KU [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
CPCN NGCC Combustion Turbine Facilities Power | MW |  | 640 |  |  |  |  |  |  |  |
LKE [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
ExpectedCapitalCostOfExpansionProject |  |  | $ 1,000 |  |  |  | $ 1,000 |  |  |
[1] | Net income equals comprehensive income.
[2] | Net income equals comprehensive income.

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