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v3.20.2

Related Party Transactions (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2020 | Mar. 31, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Dec. 31, 2019
PPL Electric Utilities Corp [Member] | PPL Services [Member] |  |  |  |  |  |
Support Costs (Details) [Abstract] |  |  |  |  |  |
Related Party Transaction, Amounts of Transaction | $ 14 |  | $ 13 | $ 26 | $ 29 |
Intercompany Borrowings (Numeric) [Abstract] |  |  |  |  |  |
VEBA Funds Receivable | 28 |  |  | 28 |  | $ 32
PPL Electric Utilities Corp [Member] | PPL EU Services [Member] |  |  |  |  |  |
Support Costs (Details) [Abstract] |  |  |  |  |  |
Related Party Transaction, Amounts of Transaction | 41 |  | 37 | 82 | 74 |
PPL Electric Utilities Corp [Member] | PPL Energy Funding [Member] |  |  |  |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |  |  |  |
Intercompany note with affiliate maximum borrowing capacity | 650 |  |  | 650 |  |
Notes receivable from affiliate | 0 |  |  | 0 |  | 0
PPL Electric Utilities Corp [Member] | Accounts receivable from affiliates [Member] | PPL Services [Member] |  |  |  |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |  |  |  |
VEBA Funds Receivable | 10 |  |  | 10 |  | 10
PPL Electric Utilities Corp [Member] | Other Noncurrent Assets [Member] | PPL Services [Member] |  |  |  |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |  |  |  |
VEBA Funds Receivable | 18 |  |  | 18 |  | 22
LG And E And KU Energy LLC [Member] |  |  |  |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |  |  |  |
Long-term debt to affiliate | 650 |  |  | 650 |  | 650
Interest Expense with Affiliate | 8 |  | 9 | 15 | 16 |
Notes payable with affiliates | 252 |  |  | 252 |  | 150
LG And E And KU Energy LLC [Member] | PPL Services [Member] |  |  |  |  |  |
Support Costs (Details) [Abstract] |  |  |  |  |  |
Related Party Transaction, Amounts of Transaction | 7 |  | 5 | 13 | 14 |
LG And E And KU Energy LLC [Member] | PPL Energy Funding [Member] |  |  |  |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |  |  |  |
Intercompany note with affiliate maximum borrowing capacity | 375 |  |  | 375 |  |
Notes payable with affiliates | 252 |  |  | $ 252 |  | $ 150
Related Party Transaction, Rate |  |  |  | 1.68% |  | 3.20%
LG And E And KU Energy LLC [Member] | PPL Affiliate [Member] |  |  |  |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |  |  |  |
Intercompany note with affiliate maximum borrowing capacity | 300 |  |  | $ 300 |  |
Notes receivable from affiliate | 0 |  |  | 0 |  | $ 0
Notes payable with affiliates | 0 |  |  | 0 |  |
LG And E And KU Energy LLC [Member] | Company Affiliate [Member] |  |  |  |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |  |  |  |
Intercompany note with affiliate maximum borrowing capacity | 450 |  |  | $ 450 |  |
LG And E And KU Energy LLC [Member] | Note Payable [Member] | Affiliated Entity [Member] |  |  |  |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |  |  |  |
Debt instrument term (in years) |  |  |  | 10 years |  |
Long-term debt to affiliate | 400 |  |  | $ 400 |  | 400
Interest Expense with Affiliate | 3 |  | 3 | $ 7 | 7 |
Related Party Transaction, Rate |  | 3.50% |  | 3.50% |  |
LG And E And KU Energy LLC [Member] | Note Payable [Member] | Affiliated Entity [Member] |  |  |  |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |  |  |  |
Debt instrument term (in years) |  |  |  | 10 years |  |
Long-term debt to affiliate | 250 |  |  | $ 250 |  | 250
Interest Expense with Affiliate | 2 |  | 2 | $ 5 | 5 |
Related Party Transaction, Rate |  | 4.00% |  | 4.00% |  |
Louisville Gas And Electric Co [Member] |  |  |  |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |  |  |  |
Notes payable with affiliates | 190 |  |  | $ 190 |  | 0
Louisville Gas And Electric Co [Member] | Parent And Affiliate [Member] |  |  |  |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |  |  |  |
Intercompany Money Pool Agreement Maximum Borrowing Capacity | 750 |  |  | 750 |  |
Notes payable with affiliates | 190 |  |  | 190 |  | 0
Louisville Gas And Electric Co [Member] | LKS [Member] |  |  |  |  |  |
Support Costs (Details) [Abstract] |  |  |  |  |  |
Related Party Transaction, Amounts of Transaction | 44 |  | 37 | 82 | 75 |
Kentucky Utilities Co [Member] |  |  |  |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |  |  |  |
Notes receivable from affiliate | 190 |  |  | 190 |  | 0
Kentucky Utilities Co [Member] | Parent And Affiliate [Member] |  |  |  |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |  |  |  |
Notes receivable from affiliate | 190 |  |  | 190 |  |
Intercompany Money Pool Agreement Maximum Borrowing Capacity | 650 |  |  | 650 |  |
Notes payable with affiliates | 0 |  |  | 0 |  | $ 0
Kentucky Utilities Co [Member] | LKS [Member] |  |  |  |  |  |
Support Costs (Details) [Abstract] |  |  |  |  |  |
Related Party Transaction, Amounts of Transaction | $ 46 |  | $ 41 | $ 87 | $ 84 |

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