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Financing Activities - Short-term Debt (Details) - Commercial Paper [Member] - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Short-term Debt [Line Items] |  |
Capacity | $ 3,950 |
Commercial Paper Issuances (c) | 596 | $ 303
Unused Capacity | $ 3,354 |
PPL Capital Funding [Member] |  |
Short-term Debt [Line Items] |  |
Weighted - Average Interest Rate | 4.29% | 4.76%
Capacity | $ 1,600 |
Commercial Paper Issuances (c) | 445 | $ 138
Unused Capacity | 1,155 |
PPL Electric [Member] |  |
Short-term Debt [Line Items] |  |
Capacity | 750 |
Commercial Paper Issuances (c) | 0 | $ 0
Unused Capacity | 750 |
LGE [Member] |  |
Short-term Debt [Line Items] |  |
Weighted - Average Interest Rate |  | 4.72%
Capacity | 600 |
Commercial Paper Issuances (c) | 0 | $ 25
Unused Capacity | 600 |
KU [Member] |  |
Short-term Debt [Line Items] |  |
Weighted - Average Interest Rate |  | 4.71%
Capacity | 600 |
Commercial Paper Issuances (c) | 0 | $ 140
Unused Capacity | $ 600 |
Rhode Island Energy |  |
Short-term Debt [Line Items] |  |
Weighted - Average Interest Rate | 4.24% |
Capacity | $ 400 |
Commercial Paper Issuances (c) | 151 | 0
Unused Capacity | 249 |
PPL Electric Utilities Corp [Member] |  |
Short-term Debt [Line Items] |  |
Capacity | 750 |
Commercial Paper Issuances (c) | 0 | $ 0
Unused Capacity | 750 |
Louisville Gas And Electric Co [Member] |  |
Short-term Debt [Line Items] |  |
Weighted - Average Interest Rate |  | 4.72%
Capacity | 600 |
Commercial Paper Issuances (c) | 0 | $ 25
Unused Capacity | 600 |
Kentucky Utilities Co [Member] |  |
Short-term Debt [Line Items] |  |
Weighted - Average Interest Rate |  | 4.71%
Capacity | 600 |
Commercial Paper Issuances (c) | 0 | $ 140
Unused Capacity | $ 600 |

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