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v3.20.4

Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2020
Summary of Significant Accounting Policies [Line Items] |
Weighted-average Rates of Depreciation | Following are the weighted-average annual rates of depreciation, for regulated utility plant, for the years ended December 31:
| 2020 |  | 2019 |  | 2018
PPL | 2.81 | % |  | 2.84 | % |  | 2.77 | %
PPL Electric | 2.99 | % |  | 3.05 | % |  | 3.01 | %
LKE | 4.00 | % |  | 3.96 | % |  | 3.69 | %
LG&E | 4.00 | % |  | 3.87 | % |  | 3.63 | %
KU | 4.00 | % |  | 4.02 | % |  | 3.74 | %
Schedule of Utility Inventory | "Fuel, materials and supplies" on the Balance Sheets consisted of the following at December 31:
| 2020
| PPL |  | PPL Electric |  | LKE |  | LG&E |  | KU
Fuel | $ | 95 |  |  | $ | — |  |  | $ | 95 |  |  | $ | 38 |  |  | $ | 57 |
Natural gas stored underground | 30 |  |  | — |  |  | 30 |  |  | 30 |  |  | — |
Materials and supplies | 236 |  |  | 59 |  |  | 117 |  |  | 51 |  |  | 66 |
Total | $ | 361 |  |  | $ | 59 |  |  | $ | 242 |  |  | $ | 119 |  |  | $ | 123 |
| 2019
| PPL |  | PPL Electric |  | LKE |  | LG&E |  | KU
Fuel | $ | 106 |  |  | $ | — |  |  | $ | 106 |  |  | $ | 43 |  |  | $ | 63 |
Natural gas stored underground | 35 |  |  | — |  |  | 35 |  |  | 35 |  |  | — |
Materials and supplies | 191 |  |  | 33 |  |  | 109 |  |  | 44 |  |  | 65 |
Total | $ | 332 |  |  | $ | 33 |  |  | $ | 250 |  |  | $ | 122 |  |  | $ | 128 |
Reconciliation of Cash, Cash Equivalents and Restricted Cash from the Balance Sheet to Cash Flow | The following provides a reconciliation of Cash, Cash Equivalents and Restricted Cash reported within the Balance Sheets to the amounts shown on the Statements of Cash Flows:
| PPL |  | PPL Electric
| December 31, 2020 |  | December 31, 2019 |  | December 31, 2020 |  | December 31, 2019
Cash and cash equivalents | $ | 708 |  |  | $ | 815 |  |  | $ | 40 |  |  | $ | 262 |
Restricted cash - current | 1 |  |  | 3 |  |  | — |  |  | 2 |
Restricted cash - noncurrent (a) | 18 |  |  | 18 |  |  | — |  |  | — |
Total Cash, Cash Equivalents and Restricted Cash | $ | 727 |  |  | $ | 836 |  |  | $ | 40 |  |  | $ | 264 |
(a)Bank deposits and other cash equivalents that are restricted by agreement or that have been clearly designated for a specific purpose are classified as restricted cash. On the Balance Sheets, the current portion of restricted cash is included in "Other current assets," while the noncurrent portion is included in "Other noncurrent assets."
Accounts Receivable, Allowance for Credit Loss | The changes in the allowance for doubtful accounts are included in the following table. Amounts relate to “accounts receivable-customer” except as noted.
|  |  | Additions |  |  |  |  |
| Balance at Beginning of Period |  | Charged to Income |  | Charged to Other Accounts |  | Deductions (b) |  | Balance at End of Period |
PPL |  |  |  |  |  |  |  |  |  |
2020 (a) | $ | 60 |  | (a) | $ | 31 |  |  | $ | — |  |  | $ | 16 |  |  | $ | 75 |  | (c) (d)
2019 | 56 |  |  | 37 |  |  | 3 |  |  | 38 |  |  | 58 |  |
2018 | 51 |  |  | 41 |  |  | 3 |  |  | 39 |  |  | 56 |  |
PPL Electric |  |  |  |  |  |  |  |  |  |
2020 | $ | 30 |  | (a) | $ | 19 |  |  | $ | — |  |  | $ | 8 |  |  | $ | 41 |  | (c)
2019 | 27 |  |  | 26 |  |  | — |  |  | 25 |  |  | 28 |  |
2018 | 24 |  |  | 29 |  |  | — |  |  | 26 |  |  | 27 |  |
LKE |  |  |  |  |  |  |  |  |  |
2020 | $ | 28 |  |  | $ | 9 |  |  | $ | — |  |  | $ | 5 |  |  | $ | 32 |  | (d)
2019 | 27 |  |  | 8 |  |  | 3 |  |  | 10 |  |  | 28 |  |
2018 | 25 |  |  | 10 |  |  | 3 |  |  | 11 |  |  | 27 |  |
LG&E |  |  |  |  |  |  |  |  |  |
2020 | $ | 1 |  |  | $ | 4 |  |  | $ | — |  |  | $ | 2 |  |  | $ | 3 |  |
2019 | 1 |  |  | 2 |  |  | 2 |  |  | 4 |  |  | 1 |  |
2018 | 1 |  |  | 4 |  |  | 1 |  |  | 5 |  |  | 1 |  |
KU |  |  |  |  |  |  |  |  |  |
2020 | $ | 1 |  |  | $ | 4 |  |  | $ | — |  |  | $ | 3 |  |  | $ | 2 |  |
2019 | 2 |  |  | 4 |  |  | 1 |  |  | 6 |  |  | 1 |  |
2018 | 1 |  |  | 5 |  |  | 2 |  |  | 6 |  |  | 2 |  |
(a)Adjusted for $2 million cumulative-effect adjustment upon adoption of current expected credit loss guidance. (b)Primarily related to uncollectible accounts written off. (c)Includes $3 million related to other receivables. (d)Includes $27 million related to other receivables.
PPL Electric Utilities Corp [Member] |
Summary of Significant Accounting Policies [Line Items] |
Intercompany tax receivables (payables) | At December 31, the following intercompany tax receivables (payables) were recorded:
| 2020 |  | 2019
PPL Electric | $ | (9) |  |  | $ | 3 |
LKE | (12) |  |  | (8) |
LG&E | (1) |  |  | (4) |
KU | (5) |  |  | (6) |
Reconciliation of Cash, Cash Equivalents and Restricted Cash from the Balance Sheet to Cash Flow | The following provides a reconciliation of Cash, Cash Equivalents and Restricted Cash reported within the Balance Sheets to the amounts shown on the Statements of Cash Flows:
| PPL |  | PPL Electric
| December 31, 2020 |  | December 31, 2019 |  | December 31, 2020 |  | December 31, 2019
Cash and cash equivalents | $ | 708 |  |  | $ | 815 |  |  | $ | 40 |  |  | $ | 262 |
Restricted cash - current | 1 |  |  | 3 |  |  | — |  |  | 2 |
Restricted cash - noncurrent (a) | 18 |  |  | 18 |  |  | — |  |  | — |
Total Cash, Cash Equivalents and Restricted Cash | $ | 727 |  |  | $ | 836 |  |  | $ | 40 |  |  | $ | 264 |
(a)Bank deposits and other cash equivalents that are restricted by agreement or that have been clearly designated for a specific purpose are classified as restricted cash. On the Balance Sheets, the current portion of restricted cash is included in "Other current assets," while the noncurrent portion is included in "Other noncurrent assets."
LG And E And KU Energy LLC [Member] |
Summary of Significant Accounting Policies [Line Items] |
Intercompany tax receivables (payables) | At December 31, the following intercompany tax receivables (payables) were recorded:
| 2020 |  | 2019
PPL Electric | $ | (9) |  |  | $ | 3 |
LKE | (12) |  |  | (8) |
LG&E | (1) |  |  | (4) |
KU | (5) |  |  | (6) |
Louisville Gas And Electric Co [Member] |
Summary of Significant Accounting Policies [Line Items] |
Intercompany tax receivables (payables) | At December 31, the following intercompany tax receivables (payables) were recorded:
| 2020 |  | 2019
PPL Electric | $ | (9) |  |  | $ | 3 |
LKE | (12) |  |  | (8) |
LG&E | (1) |  |  | (4) |
KU | (5) |  |  | (6) |
Kentucky Utilities Co [Member] |
Summary of Significant Accounting Policies [Line Items] |
Intercompany tax receivables (payables) | At December 31, the following intercompany tax receivables (payables) were recorded:
| 2020 |  | 2019
PPL Electric | $ | (9) |  |  | $ | 3 |
LKE | (12) |  |  | (8) |
LG&E | (1) |  |  | (4) |
KU | (5) |  |  | (6) |

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