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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2025
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:
| 2025 |  | 2024 |  | 2023
PPL | $ | 32 |  |  | $ | 20 |  |  | $ | 12 |
PPL Electric | 13 |  |  | 9 |  |  | 7 |
LG&E | 6 |  |  | 3 |  |  | 1 |
KU | 8 |  |  | 4 |  |  | 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:
| 2025 |  | 2024 |  | 2023
PPL | 3.06 | % |  | 3.20 | % |  | 3.26 | %
PPL Electric | 2.46 | % |  | 2.52 | % |  | 2.62 | %
LG&E | 3.69 | % |  | 4.02 | % |  | 4.00 | %
KU | 3.68 | % |  | 3.86 | % |  | 3.95 | %
Schedule of Utility Inventory | "Fuel, materials and supplies" on the Balance Sheets consisted of the following at December 31:
| 2025
| PPL |  | PPL Electric |  | LG&E |  | KU
Fuel | $ | 157 |  |  | $ | — |  |  | $ | 58 |  |  | $ | 99 |
Natural gas stored underground | 50 |  |  | — |  |  | 33 |  |  | — |
Materials and supplies | 344 |  |  | 151 |  |  | 69 |  |  | 84 |
Total | $ | 551 |  |  | $ | 151 |  |  | $ | 160 |  |  | $ | 183 |
| 2024
| PPL |  | PPL Electric |  | LG&E |  | KU
Fuel | $ | 153 |  |  | $ | — |  |  | $ | 64 |  |  | $ | 89 |
Natural gas stored underground | 49 |  |  | — |  |  | 29 |  |  | — |
Materials and supplies | 309 |  |  | 104 |  |  | 64 |  |  | 84 |
Total | $ | 511 |  |  | $ | 104 |  |  | $ | 157 |  |  | $ | 173 |
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 |  |  |  |  |  |  |  |
2025 | $ | 154 |  |  | $ | 84 |  |  | $ | 98 |  |  | $ | 140 |  | (b)
2024 | 130 |  |  | 109 |  |  | 85 |  |  | 154 |  | (b)
2023 | 95 |  |  | 87 |  |  | 52 |  |  | 130 |  | (b)
PPL Electric |  |  |  |  |  |  |  |
2025 | $ | 41 |  |  | $ | 33 |  |  | $ | 35 |  |  | $ | 39 |  | (c)
2024 | 50 |  |  | 56 |  |  | 65 |  |  | 41 |  | (c)
2023 | 33 |  |  | 52 |  |  | 35 |  |  | 50 |  | (c)
LG&E |  |  |  |  |  |  |  |
2025 | $ | 3 |  |  | $ | 4 |  |  | $ | 2 |  |  | $ | 5 |  |
2024 | 6 |  |  | 4 |  |  | 7 |  |  | 3 |  |
2023 | 4 |  |  | 4 |  |  | 2 |  |  | 6 |  |
KU |  |  |  |  |  |  |  |
2025 | $ | 2 |  |  | $ | 5 |  |  | $ | 3 |  |  | $ | 4 |  |
2024 | 2 |  |  | 4 |  |  | 4 |  |  | 2 |  |
2023 | 3 |  |  | 3 |  |  | 4 |  |  | 2 |  |
(a)Primarily related to uncollectible accounts written off. (b)Includes $43 million, $39 million and $41 million related to other accounts receivable at December 31, 2025, 2024 and 2023. (c)Includes $2 million, $2 million and $3 million related to other accounts receivable at December 31, 2025, 2024 and 2023.
PPL Electric Utilities Corp [Member] |
Summary of Significant Accounting Policies [Line Items] |
Intercompany tax receivables (payables) | At December 31, the following intercompany tax payables were recorded:
| 2025 |  | 2024
PPL Electric | $ | (27) |  |  | $ | (2) |
LG&E | (7) |  |  | (2) |
KU | (10) |  |  | (5) |
Louisville Gas And Electric Co [Member] |
Summary of Significant Accounting Policies [Line Items] |
Intercompany tax receivables (payables) | At December 31, the following intercompany tax payables were recorded:
| 2025 |  | 2024
PPL Electric | $ | (27) |  |  | $ | (2) |
LG&E | (7) |  |  | (2) |
KU | (10) |  |  | (5) |
Kentucky Utilities Co [Member] |
Summary of Significant Accounting Policies [Line Items] |
Intercompany tax receivables (payables) | At December 31, the following intercompany tax payables were recorded:
| 2025 |  | 2024
PPL Electric | $ | (27) |  |  | $ | (2) |
LG&E | (7) |  |  | (2) |
KU | (10) |  |  | (5) |

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