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Financing Activities - Short-term Debt (Details) - Commercial Paper [Member] - USD ($) $ in Millions | Dec. 31, 2023 | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | --- | ---
Short-term Debt [Line Items] |  |  |
Capacity | $ 3,300 |  |
Commercial paper issuances | 993 |  | $ 987
Unused capacity | $ 2,307 |  |
PPL Capital Funding [Member] |  |  |
Short-term Debt [Line Items] |  |  |
Weighted-average interest rate | 5.66% |  | 4.84%
Capacity | $ 1,350 |  |
Commercial paper issuances | 365 |  | $ 561
Unused capacity | $ 985 |  |
PPL Electric [Member] |  |  |
Short-term Debt [Line Items] |  |  |
Weighted-average interest rate | 5.67% |  | 4.74%
Capacity | $ 650 |  |
Commercial paper issuances | 510 |  | $ 145
Unused capacity | $ 140 |  |
LGE [Member] |  |  |
Short-term Debt [Line Items] |  |  |
Weighted-average interest rate |  |  | 4.94%
Capacity | $ 500 |  |
Commercial paper issuances | 0 |  | $ 180
Unused capacity | $ 500 |  |
KU [Member] |  |  |
Short-term Debt [Line Items] |  |  |
Weighted-average interest rate | 5.64% |  | 4.90%
Capacity | $ 400 |  |
Commercial paper issuances | 93 |  | $ 101
Unused capacity | $ 307 |  |
Rhode Island Energy |  |  |
Short-term Debt [Line Items] |  |  |
Weighted-average interest rate | 5.72% |  |
Capacity | $ 400 | $ 400 |
Commercial paper issuances | 25 |  |
Unused capacity | $ 375 |  |
PPL Electric Utilities Corp [Member] |  |  |
Short-term Debt [Line Items] |  |  |
Weighted-average interest rate | 5.67% |  | 4.74%
Capacity | $ 650 |  |
Commercial paper issuances | 510 |  | $ 145
Unused capacity | $ 140 |  |
Louisville Gas And Electric Co [Member] |  |  |
Short-term Debt [Line Items] |  |  |
Weighted-average interest rate |  |  | 4.94%
Capacity | $ 500 |  |
Commercial paper issuances | 0 |  | $ 180
Unused capacity | $ 500 |  |
Kentucky Utilities Co [Member] |  |  |
Short-term Debt [Line Items] |  |  |
Weighted-average interest rate | 5.64% |  | 4.90%
Capacity | $ 400 |  |
Commercial paper issuances | 93 |  | $ 101
Unused capacity | $ 307 |  |

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