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Utility Rate Regulation (Regulatory Matters) (Details) $ in Millions |  |  |  |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Nov. 06, 2023 MW | Sep. 27, 2023 USD ($) | Mar. 29, 2023 USD ($) | Mar. 21, 2023 USD ($) | Feb. 03, 2023 USD ($) | Jan. 27, 2023 USD ($) | Oct. 16, 2018 | Aug. 24, 2018 | Dec. 31, 2023 USD ($) | Mar. 31, 2015 | Dec. 31, 2023 USD ($) | Nov. 21, 2023 USD ($) | Dec. 31, 2022 USD ($)
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory assets |  |  |  |  |  |  |  |  | $ 1,874 |  | $ 1,874 |  | $ 1,819
Mill Creek Unit 1 |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, Property, Plant and Equipment, Generation or Processing |  |  |  |  |  |  |  |  | 95 |  | 95 |  |
Public Utilities, Property, Plant and Equipment, Generation, Expected Remaining Book Value at Retirement |  |  |  |  |  |  |  |  | 83 |  | 83 |  |
Mill Creek Unit 2 |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, Property, Plant and Equipment, Generation or Processing |  |  |  |  |  |  |  |  | 244 |  | 244 |  |
Public Utilities, Property, Plant and Equipment, Generation, Expected Remaining Book Value at Retirement |  |  |  |  |  |  |  |  | 160 |  | 160 |  |
March 2023 Kentucky Wind Storms |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Regulatory Costs Not yet Approved |  |  |  |  |  |  |  |  | 74 |  | 74 |  |
Storm Costs [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory assets |  |  |  |  |  |  |  |  | 97 |  | 97 |  | 118
Other [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory assets |  |  |  |  |  |  |  |  | 79 |  | $ 79 |  | 69
PPL Electric [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Act 129 Recovery Period Under Phase IV Plan |  |  |  |  |  |  |  |  |  |  | 5 years |  |
PPL Electric [Member] | Pennsylvania Public Utility Commission [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Civil Penalty To Be Paid |  |  |  |  |  |  |  |  |  |  |  | $ 1 |
LGE [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
CPCN NGCC Combustion Turbine Facilities, Power | MW | 640 |  |  |  |  |  |  |  |  |  |  |  |
CPCN Solar Photovoltaic Facility to be constructed, Power | MW | 120 |  |  |  |  |  |  |  |  |  |  |  |
CPCN Solar Photovoltaic Facility to be Acquired, Power | MW | 120 |  |  |  |  |  |  |  |  |  |  |  |
CPCN 4-Hour Battery Energy Storage Facility to be Constructed, Power | MW | 125 |  |  |  |  |  |  |  |  |  |  |  |
Mill Creek 1 Unit, Generation Capacity, Power | MW | 300 |  |  |  |  |  |  |  |  |  |  |  |
Mill Creek 2 Unit, Generation Capacity, Power | MW | 297 |  |  |  |  |  |  |  |  |  |  |  |
LGE [Member] | March 2023 Kentucky Wind Storms |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Regulatory Costs Not yet Approved |  |  |  |  |  |  |  |  | 33 |  | $ 33 |  |
LGE [Member] | Kentucky Public Service Commission [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Kentucky Activities - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Return on equity |  |  |  |  |  |  |  |  |  |  | 9.35% |  |
LGE [Member] | Kentucky Public Service Commission [Member] | Storm Costs [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory assets |  |  |  |  |  |  |  |  | $ 8 |  | $ 8 |  |
LGE [Member] | Kentucky Public Service Commission [Member] | Environmental Cost Recovery [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Kentucky Activities - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization period for the deferred recovery of a regulatory asset |  |  |  |  |  |  |  |  | 12 months |  | 12 months |  |
KU [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
CPCN NGCC Combustion Turbine Facilities, Power | MW | 621 |  |  |  |  |  |  |  |  |  |  |  |
CPCN Solar Photovoltaic Facility to be constructed, Power | MW | 120 |  |  |  |  |  |  |  |  |  |  |  |
CPCN Solar Photovoltaic Facility to be Acquired, Power | MW | 120 |  |  |  |  |  |  |  |  |  |  |  |
E. W. Brown 3 Unit, Generating Capacity, Power | MW | 412 |  |  |  |  |  |  |  |  |  |  |  |
Ghent 2 Unit, Generation Capacity, Power | MW | 486 |  |  |  |  |  |  |  |  |  |  |  |
KU [Member] | March 2023 Kentucky Wind Storms |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Regulatory Costs Not yet Approved |  |  |  |  |  |  |  |  | $ 41 |  | $ 41 |  |
KU [Member] | Kentucky Public Service Commission [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Kentucky Activities - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Return on equity |  |  |  |  |  |  |  |  |  |  | 9.35% |  |
KU [Member] | Kentucky Public Service Commission [Member] | Storm Costs [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory assets |  |  |  |  |  |  |  |  | $ 11 |  | $ 11 |  |
KU [Member] | Kentucky Public Service Commission [Member] | Environmental Cost Recovery [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Kentucky Activities - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization period for the deferred recovery of a regulatory asset |  |  |  |  |  |  |  |  | 12 months |  | 12 months |  |
Rhode Island Energy | Federal Energy Regulatory Commission |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Initial minimum base ROE to be reset by the FERC |  |  |  |  |  |  |  |  |  | 11.14% |  |  |
Minimum base ROE reset by FERC |  |  |  |  |  |  |  |  |  | 10.57% |  |  |
New ROE proposed by NETO and approved by FERC |  |  |  |  |  |  | 10.41% |  |  |  |  |  |
Maximum Base ROE reset by FERC |  |  |  |  |  |  |  |  |  | 11.74% |  |  |
Rhode Island Energy | Federal Energy Regulatory Commission | Maximum ROE authorized |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
FERC Granted ROE |  |  |  |  |  |  |  |  |  |  | 11.74% |  |
Rhode Island Energy | Rhode Island Public Uitilty Commsion |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Kentucky Activities - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Return on equity |  |  |  |  |  |  |  | 9.275% |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Supplemental Capital Investment to spend on the FY 2024 Gas ISR Plan |  |  |  |  |  | $ 187 |  |  |  |  |  |  |
Supplemental Capital Investment to spend on the FY 2024 Electrical ISR Plan |  |  |  |  |  | 176 |  |  |  |  |  |  |
RIPUC Approved FY 2024 Gas ISR Plan for capital investment spend |  |  | $ 163 |  |  |  |  |  |  |  |  |  |
2nd Supplemental Capital Investment to spend on the FY 2024 Electrical ISR Plan |  |  |  | $ 166 |  |  |  |  |  |  |  |  |
RIPUC approved FY 2024 Electric ISR Plan for capital investment spend |  |  | 112 |  |  |  |  |  |  |  |  |  |
Recovery Cap on Capital Investment Related to AMF Program |  | $ 153 |  |  |  |  |  |  |  |  |  |  |
Supplemental Capital Investment Spend amount agreed to between RIE and RIPUC |  |  |  |  | $ 171 |  |  |  |  |  |  |  |
Capital Investment Spend on FY 2025 Gas ISR Plan |  |  |  |  |  |  |  |  | $ 185 |  |  |  |
Contingency Plan Spend on FY 2025 Gas ISR Plan |  |  |  |  |  |  |  |  | 11 |  |  |  |
Capital Investment Spend on FY 2025 Electric ISR Plan |  |  |  |  |  |  |  |  | 141 |  |  |  |
Rhode Island Energy | Rhode Island Public Uitilty Commsion | Vegetation Management |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Investment Spend on FY 2025 Electric ISR Plan |  |  |  |  |  |  |  |  | 13 |  |  |  |
Rhode Island Energy | Rhode Island Public Uitilty Commsion | Other O&M |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Capital Investment Spend on FY 2025 Electric ISR Plan |  |  |  |  |  |  |  |  | 1 |  |  |  |
Rhode Island Energy | Rhode Island Public Uitilty Commsion | Vegetation Management |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Supplemental Capital Investment to spend on the FY 2024 Electrical ISR Plan |  |  |  |  |  | 14 |  |  |  |  |  |  |
2nd Supplemental Capital Investment to spend on the FY 2024 Electrical ISR Plan |  |  |  | 14 |  |  |  |  |  |  |  |  |
RIPUC approved FY 2024 Electric ISR Plan for capital investment spend |  |  | 14 |  |  |  |  |  |  |  |  |  |
Rhode Island Energy | Rhode Island Public Uitilty Commsion | Other O&M |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Supplemental Capital Investment to spend on the FY 2024 Electrical ISR Plan |  |  |  |  |  | $ 3 |  |  |  |  |  |  |
2nd Supplemental Capital Investment to spend on the FY 2024 Electrical ISR Plan |  |  |  | $ 1 |  |  |  |  |  |  |  |  |
RIPUC approved FY 2024 Electric ISR Plan for capital investment spend |  |  | $ 1 |  |  |  |  |  |  |  |  |  |
Rhode Island Energy | Rhode Island Public Uitilty Commsion | Common equity percentage related to approved rate |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of common equity used on allowed ROE |  |  |  |  |  |  |  | 51.00% |  |  |  |  |
PPL Electric Utilities Corp [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Act 129 Recovery Period Under Phase IV Plan |  |  |  |  |  |  |  |  |  |  | 5 years |  |
Regulatory assets |  |  |  |  |  |  |  |  | 598 |  | $ 598 |  | 568
PPL Electric Utilities Corp [Member] | Storm Costs [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory assets |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0
PPL Electric Utilities Corp [Member] | Other [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory assets |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0
PPL Electric Utilities Corp [Member] | Pennsylvania Public Utility Commission [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Civil Penalty To Be Paid |  |  |  |  |  |  |  |  |  |  |  | $ 1 |
Louisville Gas And Electric Co [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
CPCN NGCC Combustion Turbine Facilities, Power | MW | 640 |  |  |  |  |  |  |  |  |  |  |  |
CPCN Solar Photovoltaic Facility to be constructed, Power | MW | 120 |  |  |  |  |  |  |  |  |  |  |  |
CPCN Solar Photovoltaic Facility to be Acquired, Power | MW | 120 |  |  |  |  |  |  |  |  |  |  |  |
CPCN 4-Hour Battery Energy Storage Facility to be Constructed, Power | MW | 125 |  |  |  |  |  |  |  |  |  |  |  |
New NGCC LG&E Planned Ownership Percentage | 0.31 |  |  |  |  |  |  |  |  |  |  |  |
New Solar Units LG&E Planned Ownership Percentage | 0.37 |  |  |  |  |  |  |  |  |  |  |  |
Mill Creek 1 Unit, Generation Capacity, Power | MW | 300 |  |  |  |  |  |  |  |  |  |  |  |
Mill Creek 2 Unit, Generation Capacity, Power | MW | 297 |  |  |  |  |  |  |  |  |  |  |  |
Regulatory assets |  |  |  |  |  |  |  |  | 395 |  | 395 |  | 373
Louisville Gas And Electric Co [Member] | March 2023 Kentucky Wind Storms |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Regulatory Costs Not yet Approved |  |  |  |  |  |  |  |  | 33 |  | 33 |  |
Louisville Gas And Electric Co [Member] | Storm Costs [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory assets |  |  |  |  |  |  |  |  | 15 |  | 15 |  | 7
Louisville Gas And Electric Co [Member] | Other [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory assets |  |  |  |  |  |  |  |  | 26 |  | $ 26 |  | 14
Louisville Gas And Electric Co [Member] | Kentucky Public Service Commission [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Kentucky Activities - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Return on equity |  |  |  |  |  |  |  |  |  |  | 9.35% |  |
Louisville Gas And Electric Co [Member] | Kentucky Public Service Commission [Member] | Storm Costs [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory assets |  |  |  |  |  |  |  |  | $ 8 |  | $ 8 |  |
Louisville Gas And Electric Co [Member] | Kentucky Public Service Commission [Member] | Environmental Cost Recovery [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Kentucky Activities - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization period for the deferred recovery of a regulatory asset |  |  |  |  |  |  |  |  | 12 months |  | 12 months |  |
Kentucky Utilities Co [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
CPCN NGCC Combustion Turbine Facilities, Power | MW | 621 |  |  |  |  |  |  |  |  |  |  |  |
CPCN Solar Photovoltaic Facility to be constructed, Power | MW | 120 |  |  |  |  |  |  |  |  |  |  |  |
CPCN Solar Photovoltaic Facility to be Acquired, Power | MW | 120 |  |  |  |  |  |  |  |  |  |  |  |
CPCN 4-Hour Battery Energy Storage Facility to be Constructed, Power | MW | 125 |  |  |  |  |  |  |  |  |  |  |  |
New Solar Units LG&E Planned Ownership Percentage | 0.63 |  |  |  |  |  |  |  |  |  |  |  |
New NGCC KU Planned Ownership Percentage | 0.69 |  |  |  |  |  |  |  |  |  |  |  |
E. W. Brown 3 Unit, Generating Capacity, Power | MW | 412 |  |  |  |  |  |  |  |  |  |  |  |
Ghent 2 Unit, Generation Capacity, Power | MW | 486 |  |  |  |  |  |  |  |  |  |  |  |
Regulatory assets |  |  |  |  |  |  |  |  | $ 439 |  | $ 439 |  | 442
Kentucky Utilities Co [Member] | March 2023 Kentucky Wind Storms |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Regulatory Costs Not yet Approved |  |  |  |  |  |  |  |  | 41 |  | 41 |  |
Kentucky Utilities Co [Member] | Storm Costs [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory assets |  |  |  |  |  |  |  |  | 14 |  | 14 |  | 3
Kentucky Utilities Co [Member] | Other [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory assets |  |  |  |  |  |  |  |  | 17 |  | $ 17 |  | $ 13
Kentucky Utilities Co [Member] | Kentucky Public Service Commission [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Kentucky Activities - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Return on equity |  |  |  |  |  |  |  |  |  |  | 9.35% |  |
Kentucky Utilities Co [Member] | Kentucky Public Service Commission [Member] | Storm Costs [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters Federal Matters Federal Energy Regulatory Commission Wholesale Formula Rates Numeric [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory assets |  |  |  |  |  |  |  |  | $ 11 |  | $ 11 |  |
Kentucky Utilities Co [Member] | Kentucky Public Service Commission [Member] | Environmental Cost Recovery [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Regulatory Matters - Kentucky Activities - Rate Case Proceedings (Numeric) [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization period for the deferred recovery of a regulatory asset |  |  |  |  |  |  |  |  | 12 months |  | 12 months |  |

X
- Definition 2nd Additional amount added to the FY 2024 Electrical ISR Plan as required by the RIPUC. + References No definition available. + Details
Name: | ppl_A2ndSupplementalCapitalInvestmentToSpendOnTheFY2024ElectricalISRPlan
Namespace Prefix: | ppl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The period over which Act 129 Phase IV Plan costs will be recovered in "PnYnMnDTnHnMnS" format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | ppl_Act129RecoveryPeriodUnderPhaseIVPlan
Namespace Prefix: | ppl_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The power rating of the 4-hour battery energy storage facility applied for via CPCN to be constructed at the E.W. Brown Generating Station in Mercer County, Kentucky. + References No definition available. + Details
Name: | ppl_CPCN4HourBatteryEnergyStorageFacilityToBeConstructedPower
Namespace Prefix: | ppl_
Data Type: | dtr-types1:powerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The net summer rating of the NGCC combustion turbine facilities applied for via CPCN at Mill Creek Generating Station in Jefferson County, Kentucky and E.W. Brown Generating Station in Mercer County, Kentucky. + References No definition available. + Details
Name: | ppl_CPCNNGCCCombustionTurbineFacilitiesPower
Namespace Prefix: | ppl_
Data Type: | dtr-types1:powerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The power rating of the solar photovoltaic electric generating facility applied for via CPCN to be built by a third-party in Marion County, Kentucky. + References No definition available. + Details
Name: | ppl_CPCNSolarPhotovoltaicFacilityToBeAcquiredPower
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- Definition The power rating of the solar photovoltaic electric generating facility applied for via CPCN to be constructed in Mercer County, Kentucky. + References No definition available. + Details
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- Definition Amount to spend on the FY 2025 Electric ISR plan as required by the RIPUC. + References No definition available. + Details
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- Definition Amount to spend on the FY 2024 Gas ISR plan required by the RIPUC. + References No definition available. + Details
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- Definition Amount of civil penalty to be paid, as required by a regulatory agency. + References No definition available. + Details
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- Definition Amount to 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 The total generating capacity of the E. W. Brown 3 Unit in megawatts. + References No definition available. + Details
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- Definition FERC Granted ROE + References No definition available. + Details
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- Definition The total generating capacity of the Ghent 2 Unit in megawatts. + References No definition available. + Details
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- Definition Initial minimum base ROE to be reset by the FERC + References No definition available. + Details
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- Definition Maximum Base ROE reset by FERC + References No definition available. + Details
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- Definition The total generating capacity of the Mill Creek 1 Unit in megawatts. + References No definition available. + Details
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- Definition The total generating capacity of the Mill Creek 2 Unit in megawatts. + References No definition available. + Details
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- Definition Minimum base ROE reset by FERC + References No definition available. + Details
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- Definition The percentage ownership of the planned NGCC facilities to be owned by KU. + References No definition available. + Details
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- Definition The percentage ownership of the planned NGCC facilities owned by LG&E. + References No definition available. + Details
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- Definition New ROE by National Grid along with other NETOs who filed a brief supporting FERC's new methodology and confirming the illustrative numbers that FERC arrived at in its order addressing all four complaints + References No definition available. + Details
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- Definition The percentage ownership of the planned solar units to be owned by LG&E. + References No definition available. + Details
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- Definition Percentage of common equity ratio PIPUC used on used to determine thee allowed ROE + References No definition available. + Details
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- Definition The expected remaining net book value of a regulated generation unit at its anticipated retirement date. + References No definition available. + Details
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- Definition Total capital spend approved by the RIPUC for the FY 2024 Electric ISR Plan. + 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 Supplemental Capital Investment Spend amount agreed to between RIE and RIPUC + References No definition available. + Details
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- Definition Supplemental Capital Investment to spend on the FY 2024 Electrical ISR Plan as required by the RIPUC. + References No definition available. + Details
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- Definition Additional amount added to the FY 2024 gas ISR plan as required by the RIPUC. + References No definition available. + Details
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- Definition Amount of regulatory costs not yet approved by the regulatory authority. + References No definition available. + Details
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- Definition Percentage of public utility's approved return on equity. + References No definition available. + Details
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- Definition Period end amount of property, plant and equipment (PPE) related to generation or processing owned by public utility. + References No definition available. + Details
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