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v3.20.2

Related Party Transactions (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Jun. 30, 2020 | Sep. 30, 2020 | Sep. 30, 2019 | Dec. 31, 2019
PPL Electric Utilities Corp [Member] | PPL Services [Member] |  |  |  |  |  |
Support Costs (Details) [Abstract] |  |  |  |  |  |
Related Party Transaction, Amounts of Transaction | $ 11 | $ 14 |  | $ 37 | $ 43 |
Intercompany Borrowings (Numeric) [Abstract] |  |  |  |  |  |
VEBA Funds Receivable | 27 |  |  | 27 |  | $ 32
PPL Electric Utilities Corp [Member] | PPL EU Services [Member] |  |  |  |  |  |
Support Costs (Details) [Abstract] |  |  |  |  |  |
Related Party Transaction, Amounts of Transaction | 44 | 38 |  | 126 | 112 |
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 | 17 |  |  | 17 |  | 22
LG And E And KU Energy LLC [Member] |  |  |  |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |  |  |  |
Long-term debt to affiliate | 1,200 |  |  | 1,200 |  | 650
Interest Expense with Affiliate | 10 | 7 |  | 25 | 23 |
Notes payable with affiliates | 153 |  |  | 153 |  | 150
LG And E And KU Energy LLC [Member] | PPL Services [Member] |  |  |  |  |  |
Support Costs (Details) [Abstract] |  |  |  |  |  |
Related Party Transaction, Amounts of Transaction | 6 | 6 |  | 19 | 20 |
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 | 153 |  |  | $ 153 |  | $ 150
Related Party Transaction, Rate |  |  |  | 1.66% |  | 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 | 4 | 4 |  | $ 11 | 11 |
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 | 3 | 3 |  | $ 8 | 8 |
Related Party Transaction, Rate |  |  | 4.00% | 4.00% |  |
LG And E And KU Energy LLC [Member] | Note Payable 2 [Member] | Affiliated Entity [Member] |  |  |  |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |  |  |  |
Long-term debt to affiliate | 550 |  |  | $ 550 |  |
Interest Expense with Affiliate | 3 |  |  | 3 |  |
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 |  |  |  |  |  | 0
Louisville Gas And Electric Co [Member] | LKS [Member] |  |  |  |  |  |
Support Costs (Details) [Abstract] |  |  |  |  |  |
Related Party Transaction, Amounts of Transaction | 43 | 37 |  | 125 | 112 |
Kentucky Utilities Co [Member] | Parent And Affiliate [Member] |  |  |  |  |  |
Intercompany Borrowings (Numeric) [Abstract] |  |  |  |  |  |
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 | $ 45 | $ 42 |  | $ 132 | $ 126 |

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