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Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2023
Summary of Significant Accounting Policies [Line Items]  
Reconciliation of Cash, Cash Equivalents and Restricted Cash from the Balance Sheet to Cash Flow
Capitalized Interest Table Text Block Capitalized interest, including the debt component of AFUDC, for the years ended December 31 is as follows:
202320222021
PPL$12 $$
PPL Electric
LG&E— — 
KU— — 
Weighted-average Rates of Depreciation
Following are the weighted-average annual rates of depreciation, for regulated utility plant, for the years ended December 31:
202320222021
PPL3.26 %3.21 %3.61 %
PPL Electric2.62 %2.75 %3.05 %
LG&E4.00 %4.16 %3.99 %
KU3.95 %4.01 %4.17 %
Schedule of Utility Inventory
"Fuel, materials and supplies" on the Balance Sheets consisted of the following at December 31:
 2023
 PPLPPL ElectricLG&EKU
Fuel$144 $— $50 $94 
Natural gas stored underground58 — 34 — 
Materials and supplies303 99 59 91 
Total$505 $99 $143 $185 

 2022
 PPLPPL ElectricLG&EKU
Fuel$125 $— $44 $81 
Natural gas stored underground91 — 68 — 
Materials and supplies227 69 54 86 
Total$443 $69 $166 $167 
Schedule of Valuation and Qualifying Accounts Disclosure
The changes in the allowance for doubtful accounts are included in the following table. Amounts relate to financing receivables, except as noted.
Additions
Balance at
Beginning of Period
Charged to IncomeDeductions (a)Balance at
End of Period
PPL   
2023$95 $87 $52 $130 (c)
202269 78 52 95 (c)
202173 26 30 69 (c)
PPL Electric
   
2023$33 $52 $35 $50 (b)
202235 27 29 33 (b)
202141 13 19 35 (b)
LG&E   
2023$$$$
2022
2021
KU   
2023$$$$
2022
2021

(a)Primarily related to uncollectible accounts written off.
(b)Includes $3 million related to other accounts receivables at December 31, 2023, 2022 and 2021.
(c)Includes $41 million, $36 million and $32 million related to other accounts receivables at December 31, 2023, 2022 and 2021.
PPL Electric Utilities Corp [Member]  
Summary of Significant Accounting Policies [Line Items]  
Capitalized Interest Table Text Block Capitalized interest, including the debt component of AFUDC, for the years ended December 31 is as follows:
202320222021
PPL$12 $$
PPL Electric
LG&E— — 
KU— — 
Intercompany tax receivables (payables)
At December 31, the following intercompany tax receivables (payables) were recorded:
20232022
PPL Electric$(21)$
LG&E(5)(6)
KU(3)
Louisville Gas And Electric Co [Member]  
Summary of Significant Accounting Policies [Line Items]  
Intercompany tax receivables (payables)
At December 31, the following intercompany tax receivables (payables) were recorded:
20232022
PPL Electric$(21)$
LG&E(5)(6)
KU(3)
Kentucky Utilities Co [Member]  
Summary of Significant Accounting Policies [Line Items]  
Intercompany tax receivables (payables)
At December 31, the following intercompany tax receivables (payables) were recorded:
20232022
PPL Electric$(21)$
LG&E(5)(6)
KU(3)