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Commitments and Contingencies (Guarantees and Other Assurances) (Details) - 12 months ended Dec. 31, 2024
£ in Millions, $ in Millions
USD ($)
GBP (£)
Guarantor Obligations [Line Items]    
Maximum Aggregate Liability for Safari Indemnification $ 140  
Other Guarantee (Numeric) [Abstract]    
Maximum aggregate coverage bodily injury and property damage 231  
Indemnification Cap, Surrenders of Tax Losses | £   £ 50
Indemnification for Safari sale/leaseback 25  
PPL Guarantee [Member] | Indemnification Guarantee [Member] | Indemnifications related to certain tax liabilities related to the sale of the U.K. utility business    
Guarantor Obligations [Line Items]    
Maximum exposure 50  
PPL Guarantee [Member] | Indemnification Guarantee [Member] | Guarantee of payment obligations under certain sale/leaseback financing transactions related to the sale of Safari Holdings    
Guarantor Obligations [Line Items]    
Maximum exposure 100  
PPL Guarantee [Member] | Indemnification Guarantee [Member] | Indemnifications for losses suffered related to items not covered by Aspen Power's representation and warranty insurance associated with the sale of Safari Holdings    
Guarantor Obligations [Line Items]    
Maximum exposure 140  
LGE And KU Guarantee [Member] | Financial Guarantee [Member] | LGE And KU Guarantee Of Shortfall Related To OVEC [Member]    
Guarantor Obligations [Line Items]    
Contingent potential proportionate share of OVEC's outstanding debt 81  
Louisville Gas And Electric Co [Member] | LGE And KU Guarantee [Member] | Financial Guarantee [Member] | LGE And KU Guarantee Of Shortfall Related To OVEC [Member]    
Guarantor Obligations [Line Items]    
Contingent potential proportionate share of OVEC's outstanding debt 56  
Kentucky Utilities Co [Member] | LGE And KU Guarantee [Member] | Financial Guarantee [Member] | LGE And KU Guarantee Of Shortfall Related To OVEC [Member]    
Guarantor Obligations [Line Items]    
Contingent potential proportionate share of OVEC's outstanding debt 25  
LGE [Member] | LGE And KU Guarantee [Member] | Financial Guarantee [Member] | LGE And KU Guarantee Of Shortfall Related To OVEC [Member]    
Guarantor Obligations [Line Items]    
Contingent potential proportionate share of OVEC's outstanding debt 56  
KU [Member] | LGE And KU Guarantee [Member] | Financial Guarantee [Member] | LGE And KU Guarantee Of Shortfall Related To OVEC [Member]    
Guarantor Obligations [Line Items]    
Contingent potential proportionate share of OVEC's outstanding debt $ 25