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Utility Rate Regulation - Regulatory Matters (Details) $ in Millions |  |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 26, 2024 USD ($) | Nov. 06, 2023 MW | Sep. 27, 2023 USD ($) | Mar. 29, 2023 USD ($) | Oct. 16, 2018 | Aug. 24, 2018 | Dec. 31, 2023 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2016 | Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($) | Oct. 04, 2024 USD ($) | Jun. 24, 2024 USD ($) | Apr. 26, 2024 | Apr. 25, 2024 USD ($) | Nov. 21, 2023 USD ($)
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory assets |  |  |  |  |  |  | $ 1,874 | $ 1,894 |  |  | $ 1,894 |  |  |  |  |  |
Storm Costs [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory assets |  |  |  |  |  |  | 97 | 108 |  |  | 108 |  |  |  |  |  |
Kentucky Public Service Commission [Member] | May 2024 Kentucky Storm |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Regulatory Costs Not yet Approved |  |  |  |  |  |  |  | 28 |  |  | 28 |  |  |  |  |  |
Kentucky Public Service Commission [Member] | September 2024 KY Storm [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Regulatory Costs Not yet Approved |  |  |  |  |  |  |  | 12 |  |  | 12 |  |  |  |  |  |
PPL Electric [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Billing Issues, Expenses Incurred |  |  |  |  |  |  |  | $ 0 | $ 12 |  | $ 17 | $ 21 |  |  |  |  |
Distribution System Improvement Charge Cap |  |  |  |  |  |  |  | 5.00% |  |  | 5.00% |  |  |  |  |  |
PPL Electric [Member] | Unaffiliated Third Party Entity [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts Receivable, Purchase |  |  |  |  |  |  |  | $ 404 | 391 |  | $ 1,000 | 1,000 |  |  |  |  |
PPL Electric [Member] | Pennsylvania Public Utility Commission |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
PPL Electric Billing Issue, Civil Penalty to be Paid |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1
PPL Electric Billing Issue, Donation to be Paid |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1 |
Requested Distribution System Improvement Charge Cap |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 9.00% |  |
PPL Electric Billing Issue donation paid per the settlement |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1 |  |  |
LGE [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
CPCN NGCC Combustion Turbine Facilities Power | MW |  | 640 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LGE [Member] | Kentucky Public Service Commission [Member] | May 2024 Kentucky Storm |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Regulatory Costs Not yet Approved |  |  |  |  |  |  |  | 16 |  |  | 16 |  |  |  |  |  |
LGE [Member] | Kentucky Public Service Commission [Member] | May 2024 Kentucky Storm | Storm Costs [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory assets |  |  |  |  |  |  |  | 4 |  |  | 4 |  |  |  |  |  |
LGE [Member] | Kentucky Public Service Commission [Member] | September 2024 KY Storm [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Regulatory Costs Not yet Approved |  |  |  |  |  |  |  | 2 |  |  | 2 |  |  |  |  |  |
LGE [Member] | Kentucky Public Service Commission [Member] | September 2024 KY Storm [Member] | Storm Costs [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory assets |  |  |  |  |  |  |  | 1 |  |  | 1 |  |  |  |  |  |
LGE [Member] | Kentucky Public Service Commission [Member] | Subsequent Event [Member] | Mill Creek Unit 1 retirement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Regulatory Costs Not yet Approved |  |  |  |  |  |  |  |  |  |  |  |  | $ 125 |  |  |  |
KU [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
CPCN NGCC Combustion Turbine Facilities Power | MW |  | 640 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
KU [Member] | Kentucky Public Service Commission [Member] | May 2024 Kentucky Storm |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Regulatory Costs Not yet Approved |  |  |  |  |  |  |  | 12 |  |  | 12 |  |  |  |  |  |
KU [Member] | Kentucky Public Service Commission [Member] | May 2024 Kentucky Storm | Storm Costs [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory assets |  |  |  |  |  |  |  | 4 |  |  | 4 |  |  |  |  |  |
KU [Member] | Kentucky Public Service Commission [Member] | September 2024 KY Storm [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Regulatory Costs Not yet Approved |  |  |  |  |  |  |  | 10 |  |  | 10 |  |  |  |  |  |
KU [Member] | Kentucky Public Service Commission [Member] | September 2024 KY Storm [Member] | Storm Costs [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory assets |  |  |  |  |  |  |  | 5 |  |  | $ 5 |  |  |  |  |  |
Rhode Island Energy | Federal Energy Regulatory Commsion [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
New ROE prosed by NETO and approved by FERC |  |  |  |  | 10.41% |  |  |  |  |  |  |  |  |  |  |  |
Initial minimum base ROE to be reset by the FERC |  |  |  |  |  |  |  |  |  | 11.14% |  |  |  |  |  |  |
Maximum Base ROE reset by FERC |  |  |  |  |  |  |  |  |  | 11.74% |  |  |  |  |  |  |
Minimum base ROE reset by FERC |  |  |  |  |  |  |  |  |  | 10.57% |  |  |  |  |  |  |
Rhode Island Energy | Federal Energy Regulatory Commsion [Member] | Maximum ROE authorized |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
FERC Granted ROE |  |  |  |  |  |  |  |  |  |  | 11.74% |  |  |  |  |  |
Rhode Island Energy | Rhode Island Public Utility Commission |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, Approved Return on Equity, Percentage |  |  |  |  |  | 9.275% |  |  |  |  |  |  |  |  |  |  |
RIPUC Approved FY 2024 Gas ISR Plan for capital investment spend |  |  |  | $ 163 |  |  |  |  |  |  |  |  |  |  |  |  |
Recovery Cap on Capital Investment Related to AMF Program |  |  | $ 153 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Investment Spend on FY 2025 Gas ISR Plan |  |  |  |  |  |  | 185 |  |  |  |  |  |  |  |  |  |
Proposed Capital Investment Spend on FY 2025 Electric ISR Plan |  |  |  |  |  |  | 141 |  |  |  |  |  |  |  |  |  |
Proposed Contingency Plan Spend on FY 2025 Gas ISR Plan |  |  |  |  |  |  | 11 |  |  |  |  |  |  |  |  |  |
Approved Capital Investment Spend on FY 2025 Gas ISR Plan | $ 180 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Approved Contingency Plan Spend on FY 2025 Gas ISR Plan | 11 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rhode Island Energy | Rhode Island Public Utility Commission | Capital Investment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Approved Capital Investment Spend on FY 2025 Gas ISR Plan | 168 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rhode Island Energy | Rhode Island Public Utility Commission | Paving Costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Approved Capital Investment Spend on FY 2025 Gas ISR Plan | 12 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rhode Island Energy | Rhode Island Public Utility Commission | Vegetation management |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proposed Capital Investment Spend on FY 2025 Electric ISR Plan |  |  |  |  |  |  | 13 |  |  |  |  |  |  |  |  |  |
Approved Capital Investment Spend on FY 2025 Electric ISR Plan | 13 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rhode Island Energy | Rhode Island Public Utility Commission | Other O&M |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proposed Capital Investment Spend on FY 2025 Electric ISR Plan |  |  |  |  |  |  | 1 |  |  |  |  |  |  |  |  |  |
Approved Capital Investment Spend on FY 2025 Electric ISR Plan | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rhode Island Energy | Rhode Island Public Utility Commission | Capital Investment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Approved Capital Investment Spend on FY 2025 Electric ISR Plan | $ 132 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rhode Island Energy | Rhode Island Public Utility Commission | Vegetation management |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
RIPUC Approved FY 2024 Electric ISR Plan for capital investment spend |  |  |  | 14 |  |  |  |  |  |  |  |  |  |  |  |  |
Rhode Island Energy | Rhode Island Public Utility Commission | Other O&M |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
RIPUC Approved FY 2024 Electric ISR Plan for capital investment spend |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |
Rhode Island Energy | Rhode Island Public Utility Commission | Capital Investment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
RIPUC Approved FY 2024 Electric ISR Plan for capital investment spend |  |  |  | $ 112 |  |  |  |  |  |  |  |  |  |  |  |  |
Rhode Island Energy | Rhode Island Public Utility Commission | Common equity percentage related to approved rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of common equity used on allowed ROE |  |  |  |  |  | 51.00% |  |  |  |  |  |  |  |  |  |  |
PPL Electric Utilities Corp [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Billing Issues, Expenses Incurred |  |  |  |  |  |  |  | $ 0 | 12 |  | $ 17 | 21 |  |  |  |  |
Distribution System Improvement Charge Cap |  |  |  |  |  |  |  | 5.00% |  |  | 5.00% |  |  |  |  |  |
Regulatory assets |  |  |  |  |  |  | 598 | $ 622 |  |  | $ 622 |  |  |  |  |  |
PPL Electric Utilities Corp [Member] | Storm Costs [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory assets |  |  |  |  |  |  | 0 | 17 |  |  | 17 |  |  |  |  |  |
PPL Electric Utilities Corp [Member] | Unaffiliated Third Party Entity [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts Receivable, Purchase |  |  |  |  |  |  |  | 404 | $ 391 |  | 1,000 | $ 1,000 |  |  |  |  |
PPL Electric Utilities Corp [Member] | Pennsylvania Public Utility Commission |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
PPL Electric Billing Issue, Civil Penalty to be Paid |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1
PPL Electric Billing Issue, Donation to be Paid |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1 |
Requested Distribution System Improvement Charge Cap |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 9.00% |  |
PPL Electric Billing Issue donation paid per the settlement |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1 |  |  |
Louisville Gas And Electric Co [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
CPCN NGCC Combustion Turbine Facilities Power | MW |  | 640 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
New NGCC LG&E Planned Ownership Percentage |  | 31.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory assets |  |  |  |  |  |  | 395 | 389 |  |  | 389 |  |  |  |  |  |
Louisville Gas And Electric Co [Member] | Storm Costs [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory assets |  |  |  |  |  |  | 15 | 19 |  |  | 19 |  |  |  |  |  |
Louisville Gas And Electric Co [Member] | Kentucky Public Service Commission [Member] | May 2024 Kentucky Storm |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Regulatory Costs Not yet Approved |  |  |  |  |  |  |  | 16 |  |  | 16 |  |  |  |  |  |
Louisville Gas And Electric Co [Member] | Kentucky Public Service Commission [Member] | May 2024 Kentucky Storm | Storm Costs [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory assets |  |  |  |  |  |  |  | 4 |  |  | 4 |  |  |  |  |  |
Louisville Gas And Electric Co [Member] | Kentucky Public Service Commission [Member] | September 2024 KY Storm [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Regulatory Costs Not yet Approved |  |  |  |  |  |  |  | 2 |  |  | 2 |  |  |  |  |  |
Louisville Gas And Electric Co [Member] | Kentucky Public Service Commission [Member] | September 2024 KY Storm [Member] | Storm Costs [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory assets |  |  |  |  |  |  |  | 1 |  |  | 1 |  |  |  |  |  |
Louisville Gas And Electric Co [Member] | Kentucky Public Service Commission [Member] | Subsequent Event [Member] | Mill Creek Unit 1 retirement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Regulatory Costs Not yet Approved |  |  |  |  |  |  |  |  |  |  |  |  | $ 125 |  |  |  |
Kentucky Utilities Co [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
CPCN NGCC Combustion Turbine Facilities Power | MW |  | 640 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
New NGCC KU Planned Ownership Percentage |  | 69.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory assets |  |  |  |  |  |  | 439 | 438 |  |  | 438 |  |  |  |  |  |
Kentucky Utilities Co [Member] | Storm Costs [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory assets |  |  |  |  |  |  | $ 14 | 23 |  |  | 23 |  |  |  |  |  |
Kentucky Utilities Co [Member] | Kentucky Public Service Commission [Member] | May 2024 Kentucky Storm |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Regulatory Costs Not yet Approved |  |  |  |  |  |  |  | 12 |  |  | 12 |  |  |  |  |  |
Kentucky Utilities Co [Member] | Kentucky Public Service Commission [Member] | May 2024 Kentucky Storm | Storm Costs [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory assets |  |  |  |  |  |  |  | 4 |  |  | 4 |  |  |  |  |  |
Kentucky Utilities Co [Member] | Kentucky Public Service Commission [Member] | September 2024 KY Storm [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Regulatory Costs Not yet Approved |  |  |  |  |  |  |  | 10 |  |  | 10 |  |  |  |  |  |
Kentucky Utilities Co [Member] | Kentucky Public Service Commission [Member] | September 2024 KY Storm [Member] | Storm Costs [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory assets |  |  |  |  |  |  |  | $ 5 |  |  | $ 5 |  |  |  |  |  |

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- Definition Amount of contingency spend on FY 2025 Gas ISR Plan approved by the RIPUC on April 1, 2024, contingent on Pipeline and Hazardous Material Safety Administration potential enactment of regulations during FY 2025. + References No definition available. + Details
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- Definition The percentage of ownership of the planned NGCC facilities owned by KU. + References No definition available. + Details
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- Definition Civil penalty to be paid as part of the settlement agreement with the PAPUC's Bureau of Investigations & Enforcement in regards to a billing issue at PPL Electric during December 2022 through January 2023. + References No definition available. + Details
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- Definition Donation to be made to PPL Electric's hardship fund as part of a modification to the 2024 settlement agreement with the PAPUC's Bureau of Investigation & Enforcement with regards to PPL Electric's billing issue during the period of December 2022 through January 2023. + References No definition available. + Details
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- Definition Amount to additional spend on the FY 2025 Gas plan as required by the RIPUC, contingent on Pipeline and Hazardous Material Safety Administration potential enactment of regulations during FY 2025. + References No definition available. + Details
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- Definition Total capital spend approved by the RIPUC for the FY 2024 Gas ISR plan + References No definition available. + Details
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- Definition The overall multi-year cap on recovery through the ISR process for the RIPUC approved capital investment related to the AMF-based metering system for the electric distribution business of RIE. + References No definition available. + Details
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- Definition Total amount approved April 1, 2024, to spend on the FY 2025 Gas ISR Plan by the RIPUC. + References No definition available. + Details
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