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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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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:
| 2023 |  | 2022 |  | 2021
PPL | $ | 12 |  |  | $ | 7 |  |  | $ | 6 |
PPL Electric | 7 |  |  | 5 |  |  | 6 |
LG&E | 1 |  |  | — |  |  | — |
KU | 1 |  |  | — |  |  | — |
Weighted-average Rates of Depreciation | Following are the weighted-average annual rates of depreciation, for regulated utility plant, for the years ended December 31:
| 2023 |  | 2022 |  | 2021
PPL | 3.26 | % |  | 3.21 | % |  | 3.61 | %
PPL Electric | 2.62 | % |  | 2.75 | % |  | 3.05 | %
LG&E | 4.00 | % |  | 4.16 | % |  | 3.99 | %
KU | 3.95 | % |  | 4.01 | % |  | 4.17 | %
Schedule of Utility Inventory | "Fuel, materials and supplies" on the Balance Sheets consisted of the following at December 31:
| 2023
| PPL |  | PPL Electric |  | LG&E |  | KU
Fuel | $ | 144 |  |  | $ | — |  |  | $ | 50 |  |  | $ | 94 |
Natural gas stored underground | 58 |  |  | — |  |  | 34 |  |  | — |
Materials and supplies | 303 |  |  | 99 |  |  | 59 |  |  | 91 |
Total | $ | 505 |  |  | $ | 99 |  |  | $ | 143 |  |  | $ | 185 |
| 2022
| PPL |  | PPL Electric |  | LG&E |  | KU
Fuel | $ | 125 |  |  | $ | — |  |  | $ | 44 |  |  | $ | 81 |
Natural gas stored underground | 91 |  |  | — |  |  | 68 |  |  | — |
Materials and supplies | 227 |  |  | 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 Income |  | Deductions (a) |  | Balance at End of Period |
PPL |  |  |  |  |  |  |  |
2023 | $ | 95 |  |  | $ | 87 |  |  | $ | 52 |  |  | $ | 130 |  | (c)
2022 | 69 |  |  | 78 |  |  | 52 |  |  | 95 |  | (c)
2021 | 73 |  |  | 26 |  |  | 30 |  |  | 69 |  | (c)
PPL Electric |  |  |  |  |  |  |  |
2023 | $ | 33 |  |  | $ | 52 |  |  | $ | 35 |  |  | $ | 50 |  | (b)
2022 | 35 |  |  | 27 |  |  | 29 |  |  | 33 |  | (b)
2021 | 41 |  |  | 13 |  |  | 19 |  |  | 35 |  | (b)
LG&E |  |  |  |  |  |  |  |
2023 | $ | 4 |  |  | $ | 4 |  |  | $ | 2 |  |  | $ | 6 |  |
2022 | 3 |  |  | 6 |  |  | 5 |  |  | 4 |  |
2021 | 3 |  |  | 4 |  |  | 4 |  |  | 3 |  |
KU |  |  |  |  |  |  |  |
2023 | $ | 3 |  |  | $ | 3 |  |  | $ | 4 |  |  | $ | 2 |  |
2022 | 3 |  |  | 6 |  |  | 6 |  |  | 3 |  |
2021 | 2 |  |  | 8 |  |  | 7 |  |  | 3 |  |
(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:
| 2023 |  | 2022 |  | 2021
PPL | $ | 12 |  |  | $ | 7 |  |  | $ | 6 |
PPL Electric | 7 |  |  | 5 |  |  | 6 |
LG&E | 1 |  |  | — |  |  | — |
KU | 1 |  |  | — |  |  | — |
Intercompany tax receivables (payables) | At December 31, the following intercompany tax receivables (payables) were recorded:
| 2023 |  | 2022
PPL Electric | $ | (21) |  |  | $ | 2 |
LG&E | (5) |  |  | (6) |
KU | (3) |  |  | 4 |
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:
| 2023 |  | 2022
PPL Electric | $ | (21) |  |  | $ | 2 |
LG&E | (5) |  |  | (6) |
KU | (3) |  |  | 4 |
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:
| 2023 |  | 2022
PPL Electric | $ | (21) |  |  | $ | 2 |
LG&E | (5) |  |  | (6) |
KU | (3) |  |  | 4 |

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