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Jointly Owned Facilities | 12 Months Ended
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Dec. 31, 2018
Jointly Owned Facilities [Line Items] |
Jointly Owned Facilities | (PPL, LKE, LG&E and KU) At December 31, 2018 and 2017, the Balance Sheets reflect the owned interests in the facilities listed below.
|  | Ownership Interest |  | Electric Plant |  | Accumulated Depreciation |  | Construction Work in Progress
PPL and LKE |  |  |  |  |  |  |
| December 31, 2018 |  |  |  |  |  |  |
| Generating Plants |  |  |  |  |  |  |
| Trimble County Unit 1 | 75.00 | % |  | $ | 427 |  |  | $ | 77 |  |  | $ | — |
| Trimble County Unit 2 | 75.00 | % |  | 1,063 |  |  | 199 |  |  | 293 |
| December 31, 2017 |  |  |  |  |  |  |  |  |  |  |
| Generating Plants |  |  |  |  |  |  |  |  |  |  |
| Trimble County Unit 1 | 75.00 | % |  | $ | 427 |  |  | $ | 69 |  |  | $ | 1 |
| Trimble County Unit 2 | 75.00 | % |  | 1,032 |  |  | 176 |  |  | 198 |
LG&E |  |  |  |  |  |  |
| December 31, 2018 |  |  |  |  |  |  |
| Generating Plants |  |  |  |  |  |  |
| E.W. Brown Units 6-7 | 38.00 | % |  | $ | 41 |  |  | $ | 20 |  |  | $ | — |
| Paddy's Run Unit 13 & E.W. Brown Unit 5 | 53.00 | % |  | 51 |  |  | 17 |  |  | — |
| Trimble County Unit 1 | 75.00 | % |  | 427 |  |  | 77 |  |  | — |
| Trimble County Unit 2 | 14.25 | % |  | 226 |  |  | 39 |  |  | 152 |
| Trimble County Units 5-6 | 29.00 | % |  | 32 |  |  | 11 |  |  | — |
| Trimble County Units 7-10 | 37.00 | % |  | 77 |  |  | 24 |  |  | — |
| Cane Run Unit 7 | 22.00 | % |  | 119 |  |  | 9 |  |  | — |
| E.W. Brown Solar Unit | 39.00 | % |  | 10 |  |  | 1 |  |  | — |
| December 31, 2017 |  |  |  |  |  |  |  |  |  |  |
| Generating Plants |  |  |  |  |  |  |  |  |  |  |
| E.W. Brown Units 6-7 | 38.00 | % |  | $ | 41 |  |  | $ | 17 |  |  | $ | — |
| Paddy's Run Unit 13 & E.W. Brown Unit 5 | 53.00 | % |  | 52 |  |  | 15 |  |  | — |
| Trimble County Unit 1 | 75.00 | % |  | 427 |  |  | 69 |  |  | 1 |
| Trimble County Unit 2 | 14.25 | % |  | 215 |  |  | 36 |  |  | 102 |
| Trimble County Units 5-6 | 29.00 | % |  | 32 |  |  | 9 |  |  | — |
| Trimble County Units 7-10 | 37.00 | % |  | 73 |  |  | 21 |  |  | — |
| Cane Run Unit 7 | 22.00 | % |  | 120 |  |  | 8 |  |  | 1 |
| E.W. Brown Solar Unit | 39.00 | % |  | 10 |  |  | 1 |  |  | — |
KU |  |  |  |  |  |  |
| December 31, 2018 |  |  |  |  |  |  |
| Generating Plants |  |  |  |  |  |  |
| E.W. Brown Units 6-7 | 62.00 | % |  | $ | 66 |  |  | $ | 31 |  |  | $ | — |
| Paddy's Run Unit 13 & E.W. Brown Unit 5 | 47.00 | % |  | 46 |  |  | 15 |  |  | — |
| Trimble County Unit 2 | 60.75 | % |  | 837 |  |  | 160 |  |  | 141 |
| Trimble County Units 5-6 | 71.00 | % |  | 76 |  |  | 25 |  |  | — |
| Trimble County Units 7-10 | 63.00 | % |  | 129 |  |  | 41 |  |  | — |
| Cane Run Unit 7 | 78.00 | % |  | 428 |  |  | 36 |  |  | — |
| E.W. Brown Solar Unit | 61.00 | % |  | 16 |  |  | 2 |  |  | — |
|  | Ownership Interest |  | Electric Plant |  | Accumulated Depreciation |  | Construction Work in Progress
| December 31, 2017 |  |  |  |  |  |  |  |  |  |  |
| Generating Plants |  |  |  |  |  |  |  |  |  |  |
| E.W. Brown Units 6-7 | 62.00 | % |  | $ | 66 |  |  | $ | 27 |  |  | $ | — |
| Paddy's Run Unit 13 & E.W. Brown Unit 5 | 47.00 | % |  | 46 |  |  | 13 |  |  | — |
| Trimble County Unit 2 | 60.75 | % |  | 817 |  |  | 140 |  |  | 96 |
| Trimble County Units 5-6 | 71.00 | % |  | 76 |  |  | 20 |  |  | — |
| Trimble County Units 7-10 | 63.00 | % |  | 120 |  |  | 34 |  |  | — |
| Cane Run Unit 7 | 78.00 | % |  | 431 |  |  | 31 |  |  | 4 |
| E.W. Brown Solar Unit | 61.00 | % |  | 16 |  |  | 1 |  |  | — |
Each subsidiary owning these interests provides its own funding for its share of the facility. Each receives a portion of the total output of the generating plants equal to its percentage ownership. The share of fuel and other operating costs associated with the plants is included in the corresponding operating expenses on the Statements of Income.
LG And E And KU Energy LLC [Member] |
Jointly Owned Facilities [Line Items] |
Jointly Owned Facilities | (PPL, LKE, LG&E and KU) At December 31, 2018 and 2017, the Balance Sheets reflect the owned interests in the facilities listed below.
|  | Ownership Interest |  | Electric Plant |  | Accumulated Depreciation |  | Construction Work in Progress
PPL and LKE |  |  |  |  |  |  |
| December 31, 2018 |  |  |  |  |  |  |
| Generating Plants |  |  |  |  |  |  |
| Trimble County Unit 1 | 75.00 | % |  | $ | 427 |  |  | $ | 77 |  |  | $ | — |
| Trimble County Unit 2 | 75.00 | % |  | 1,063 |  |  | 199 |  |  | 293 |
| December 31, 2017 |  |  |  |  |  |  |  |  |  |  |
| Generating Plants |  |  |  |  |  |  |  |  |  |  |
| Trimble County Unit 1 | 75.00 | % |  | $ | 427 |  |  | $ | 69 |  |  | $ | 1 |
| Trimble County Unit 2 | 75.00 | % |  | 1,032 |  |  | 176 |  |  | 198 |
LG&E |  |  |  |  |  |  |
| December 31, 2018 |  |  |  |  |  |  |
| Generating Plants |  |  |  |  |  |  |
| E.W. Brown Units 6-7 | 38.00 | % |  | $ | 41 |  |  | $ | 20 |  |  | $ | — |
| Paddy's Run Unit 13 & E.W. Brown Unit 5 | 53.00 | % |  | 51 |  |  | 17 |  |  | — |
| Trimble County Unit 1 | 75.00 | % |  | 427 |  |  | 77 |  |  | — |
| Trimble County Unit 2 | 14.25 | % |  | 226 |  |  | 39 |  |  | 152 |
| Trimble County Units 5-6 | 29.00 | % |  | 32 |  |  | 11 |  |  | — |
| Trimble County Units 7-10 | 37.00 | % |  | 77 |  |  | 24 |  |  | — |
| Cane Run Unit 7 | 22.00 | % |  | 119 |  |  | 9 |  |  | — |
| E.W. Brown Solar Unit | 39.00 | % |  | 10 |  |  | 1 |  |  | — |
| December 31, 2017 |  |  |  |  |  |  |  |  |  |  |
| Generating Plants |  |  |  |  |  |  |  |  |  |  |
| E.W. Brown Units 6-7 | 38.00 | % |  | $ | 41 |  |  | $ | 17 |  |  | $ | — |
| Paddy's Run Unit 13 & E.W. Brown Unit 5 | 53.00 | % |  | 52 |  |  | 15 |  |  | — |
| Trimble County Unit 1 | 75.00 | % |  | 427 |  |  | 69 |  |  | 1 |
| Trimble County Unit 2 | 14.25 | % |  | 215 |  |  | 36 |  |  | 102 |
| Trimble County Units 5-6 | 29.00 | % |  | 32 |  |  | 9 |  |  | — |
| Trimble County Units 7-10 | 37.00 | % |  | 73 |  |  | 21 |  |  | — |
| Cane Run Unit 7 | 22.00 | % |  | 120 |  |  | 8 |  |  | 1 |
| E.W. Brown Solar Unit | 39.00 | % |  | 10 |  |  | 1 |  |  | — |
KU |  |  |  |  |  |  |
| December 31, 2018 |  |  |  |  |  |  |
| Generating Plants |  |  |  |  |  |  |
| E.W. Brown Units 6-7 | 62.00 | % |  | $ | 66 |  |  | $ | 31 |  |  | $ | — |
| Paddy's Run Unit 13 & E.W. Brown Unit 5 | 47.00 | % |  | 46 |  |  | 15 |  |  | — |
| Trimble County Unit 2 | 60.75 | % |  | 837 |  |  | 160 |  |  | 141 |
| Trimble County Units 5-6 | 71.00 | % |  | 76 |  |  | 25 |  |  | — |
| Trimble County Units 7-10 | 63.00 | % |  | 129 |  |  | 41 |  |  | — |
| Cane Run Unit 7 | 78.00 | % |  | 428 |  |  | 36 |  |  | — |
| E.W. Brown Solar Unit | 61.00 | % |  | 16 |  |  | 2 |  |  | — |
|  | Ownership Interest |  | Electric Plant |  | Accumulated Depreciation |  | Construction Work in Progress
| December 31, 2017 |  |  |  |  |  |  |  |  |  |  |
| Generating Plants |  |  |  |  |  |  |  |  |  |  |
| E.W. Brown Units 6-7 | 62.00 | % |  | $ | 66 |  |  | $ | 27 |  |  | $ | — |
| Paddy's Run Unit 13 & E.W. Brown Unit 5 | 47.00 | % |  | 46 |  |  | 13 |  |  | — |
| Trimble County Unit 2 | 60.75 | % |  | 817 |  |  | 140 |  |  | 96 |
| Trimble County Units 5-6 | 71.00 | % |  | 76 |  |  | 20 |  |  | — |
| Trimble County Units 7-10 | 63.00 | % |  | 120 |  |  | 34 |  |  | — |
| Cane Run Unit 7 | 78.00 | % |  | 431 |  |  | 31 |  |  | 4 |
| E.W. Brown Solar Unit | 61.00 | % |  | 16 |  |  | 1 |  |  | — |
Each subsidiary owning these interests provides its own funding for its share of the facility. Each receives a portion of the total output of the generating plants equal to its percentage ownership. The share of fuel and other operating costs associated with the plants is included in the corresponding operating expenses on the Statements of Income.
Louisville Gas And Electric Co [Member] |
Jointly Owned Facilities [Line Items] |
Jointly Owned Facilities | (PPL, LKE, LG&E and KU) At December 31, 2018 and 2017, the Balance Sheets reflect the owned interests in the facilities listed below.
|  | Ownership Interest |  | Electric Plant |  | Accumulated Depreciation |  | Construction Work in Progress
PPL and LKE |  |  |  |  |  |  |
| December 31, 2018 |  |  |  |  |  |  |
| Generating Plants |  |  |  |  |  |  |
| Trimble County Unit 1 | 75.00 | % |  | $ | 427 |  |  | $ | 77 |  |  | $ | — |
| Trimble County Unit 2 | 75.00 | % |  | 1,063 |  |  | 199 |  |  | 293 |
| December 31, 2017 |  |  |  |  |  |  |  |  |  |  |
| Generating Plants |  |  |  |  |  |  |  |  |  |  |
| Trimble County Unit 1 | 75.00 | % |  | $ | 427 |  |  | $ | 69 |  |  | $ | 1 |
| Trimble County Unit 2 | 75.00 | % |  | 1,032 |  |  | 176 |  |  | 198 |
LG&E |  |  |  |  |  |  |
| December 31, 2018 |  |  |  |  |  |  |
| Generating Plants |  |  |  |  |  |  |
| E.W. Brown Units 6-7 | 38.00 | % |  | $ | 41 |  |  | $ | 20 |  |  | $ | — |
| Paddy's Run Unit 13 & E.W. Brown Unit 5 | 53.00 | % |  | 51 |  |  | 17 |  |  | — |
| Trimble County Unit 1 | 75.00 | % |  | 427 |  |  | 77 |  |  | — |
| Trimble County Unit 2 | 14.25 | % |  | 226 |  |  | 39 |  |  | 152 |
| Trimble County Units 5-6 | 29.00 | % |  | 32 |  |  | 11 |  |  | — |
| Trimble County Units 7-10 | 37.00 | % |  | 77 |  |  | 24 |  |  | — |
| Cane Run Unit 7 | 22.00 | % |  | 119 |  |  | 9 |  |  | — |
| E.W. Brown Solar Unit | 39.00 | % |  | 10 |  |  | 1 |  |  | — |
| December 31, 2017 |  |  |  |  |  |  |  |  |  |  |
| Generating Plants |  |  |  |  |  |  |  |  |  |  |
| E.W. Brown Units 6-7 | 38.00 | % |  | $ | 41 |  |  | $ | 17 |  |  | $ | — |
| Paddy's Run Unit 13 & E.W. Brown Unit 5 | 53.00 | % |  | 52 |  |  | 15 |  |  | — |
| Trimble County Unit 1 | 75.00 | % |  | 427 |  |  | 69 |  |  | 1 |
| Trimble County Unit 2 | 14.25 | % |  | 215 |  |  | 36 |  |  | 102 |
| Trimble County Units 5-6 | 29.00 | % |  | 32 |  |  | 9 |  |  | — |
| Trimble County Units 7-10 | 37.00 | % |  | 73 |  |  | 21 |  |  | — |
| Cane Run Unit 7 | 22.00 | % |  | 120 |  |  | 8 |  |  | 1 |
| E.W. Brown Solar Unit | 39.00 | % |  | 10 |  |  | 1 |  |  | — |
KU |  |  |  |  |  |  |
| December 31, 2018 |  |  |  |  |  |  |
| Generating Plants |  |  |  |  |  |  |
| E.W. Brown Units 6-7 | 62.00 | % |  | $ | 66 |  |  | $ | 31 |  |  | $ | — |
| Paddy's Run Unit 13 & E.W. Brown Unit 5 | 47.00 | % |  | 46 |  |  | 15 |  |  | — |
| Trimble County Unit 2 | 60.75 | % |  | 837 |  |  | 160 |  |  | 141 |
| Trimble County Units 5-6 | 71.00 | % |  | 76 |  |  | 25 |  |  | — |
| Trimble County Units 7-10 | 63.00 | % |  | 129 |  |  | 41 |  |  | — |
| Cane Run Unit 7 | 78.00 | % |  | 428 |  |  | 36 |  |  | — |
| E.W. Brown Solar Unit | 61.00 | % |  | 16 |  |  | 2 |  |  | — |
|  | Ownership Interest |  | Electric Plant |  | Accumulated Depreciation |  | Construction Work in Progress
| December 31, 2017 |  |  |  |  |  |  |  |  |  |  |
| Generating Plants |  |  |  |  |  |  |  |  |  |  |
| E.W. Brown Units 6-7 | 62.00 | % |  | $ | 66 |  |  | $ | 27 |  |  | $ | — |
| Paddy's Run Unit 13 & E.W. Brown Unit 5 | 47.00 | % |  | 46 |  |  | 13 |  |  | — |
| Trimble County Unit 2 | 60.75 | % |  | 817 |  |  | 140 |  |  | 96 |
| Trimble County Units 5-6 | 71.00 | % |  | 76 |  |  | 20 |  |  | — |
| Trimble County Units 7-10 | 63.00 | % |  | 120 |  |  | 34 |  |  | — |
| Cane Run Unit 7 | 78.00 | % |  | 431 |  |  | 31 |  |  | 4 |
| E.W. Brown Solar Unit | 61.00 | % |  | 16 |  |  | 1 |  |  | — |
Each subsidiary owning these interests provides its own funding for its share of the facility. Each receives a portion of the total output of the generating plants equal to its percentage ownership. The share of fuel and other operating costs associated with the plants is included in the corresponding operating expenses on the Statements of Income.
Kentucky Utilities Co [Member] |
Jointly Owned Facilities [Line Items] |
Jointly Owned Facilities | (PPL, LKE, LG&E and KU) At December 31, 2018 and 2017, the Balance Sheets reflect the owned interests in the facilities listed below.
|  | Ownership Interest |  | Electric Plant |  | Accumulated Depreciation |  | Construction Work in Progress
PPL and LKE |  |  |  |  |  |  |
| December 31, 2018 |  |  |  |  |  |  |
| Generating Plants |  |  |  |  |  |  |
| Trimble County Unit 1 | 75.00 | % |  | $ | 427 |  |  | $ | 77 |  |  | $ | — |
| Trimble County Unit 2 | 75.00 | % |  | 1,063 |  |  | 199 |  |  | 293 |
| December 31, 2017 |  |  |  |  |  |  |  |  |  |  |
| Generating Plants |  |  |  |  |  |  |  |  |  |  |
| Trimble County Unit 1 | 75.00 | % |  | $ | 427 |  |  | $ | 69 |  |  | $ | 1 |
| Trimble County Unit 2 | 75.00 | % |  | 1,032 |  |  | 176 |  |  | 198 |
LG&E |  |  |  |  |  |  |
| December 31, 2018 |  |  |  |  |  |  |
| Generating Plants |  |  |  |  |  |  |
| E.W. Brown Units 6-7 | 38.00 | % |  | $ | 41 |  |  | $ | 20 |  |  | $ | — |
| Paddy's Run Unit 13 & E.W. Brown Unit 5 | 53.00 | % |  | 51 |  |  | 17 |  |  | — |
| Trimble County Unit 1 | 75.00 | % |  | 427 |  |  | 77 |  |  | — |
| Trimble County Unit 2 | 14.25 | % |  | 226 |  |  | 39 |  |  | 152 |
| Trimble County Units 5-6 | 29.00 | % |  | 32 |  |  | 11 |  |  | — |
| Trimble County Units 7-10 | 37.00 | % |  | 77 |  |  | 24 |  |  | — |
| Cane Run Unit 7 | 22.00 | % |  | 119 |  |  | 9 |  |  | — |
| E.W. Brown Solar Unit | 39.00 | % |  | 10 |  |  | 1 |  |  | — |
| December 31, 2017 |  |  |  |  |  |  |  |  |  |  |
| Generating Plants |  |  |  |  |  |  |  |  |  |  |
| E.W. Brown Units 6-7 | 38.00 | % |  | $ | 41 |  |  | $ | 17 |  |  | $ | — |
| Paddy's Run Unit 13 & E.W. Brown Unit 5 | 53.00 | % |  | 52 |  |  | 15 |  |  | — |
| Trimble County Unit 1 | 75.00 | % |  | 427 |  |  | 69 |  |  | 1 |
| Trimble County Unit 2 | 14.25 | % |  | 215 |  |  | 36 |  |  | 102 |
| Trimble County Units 5-6 | 29.00 | % |  | 32 |  |  | 9 |  |  | — |
| Trimble County Units 7-10 | 37.00 | % |  | 73 |  |  | 21 |  |  | — |
| Cane Run Unit 7 | 22.00 | % |  | 120 |  |  | 8 |  |  | 1 |
| E.W. Brown Solar Unit | 39.00 | % |  | 10 |  |  | 1 |  |  | — |
KU |  |  |  |  |  |  |
| December 31, 2018 |  |  |  |  |  |  |
| Generating Plants |  |  |  |  |  |  |
| E.W. Brown Units 6-7 | 62.00 | % |  | $ | 66 |  |  | $ | 31 |  |  | $ | — |
| Paddy's Run Unit 13 & E.W. Brown Unit 5 | 47.00 | % |  | 46 |  |  | 15 |  |  | — |
| Trimble County Unit 2 | 60.75 | % |  | 837 |  |  | 160 |  |  | 141 |
| Trimble County Units 5-6 | 71.00 | % |  | 76 |  |  | 25 |  |  | — |
| Trimble County Units 7-10 | 63.00 | % |  | 129 |  |  | 41 |  |  | — |
| Cane Run Unit 7 | 78.00 | % |  | 428 |  |  | 36 |  |  | — |
| E.W. Brown Solar Unit | 61.00 | % |  | 16 |  |  | 2 |  |  | — |
|  | Ownership Interest |  | Electric Plant |  | Accumulated Depreciation |  | Construction Work in Progress
| December 31, 2017 |  |  |  |  |  |  |  |  |  |  |
| Generating Plants |  |  |  |  |  |  |  |  |  |  |
| E.W. Brown Units 6-7 | 62.00 | % |  | $ | 66 |  |  | $ | 27 |  |  | $ | — |
| Paddy's Run Unit 13 & E.W. Brown Unit 5 | 47.00 | % |  | 46 |  |  | 13 |  |  | — |
| Trimble County Unit 2 | 60.75 | % |  | 817 |  |  | 140 |  |  | 96 |
| Trimble County Units 5-6 | 71.00 | % |  | 76 |  |  | 20 |  |  | — |
| Trimble County Units 7-10 | 63.00 | % |  | 120 |  |  | 34 |  |  | — |
| Cane Run Unit 7 | 78.00 | % |  | 431 |  |  | 31 |  |  | 4 |
| E.W. Brown Solar Unit | 61.00 | % |  | 16 |  |  | 1 |  |  | — |
Each subsidiary owning these interests provides its own funding for its share of the facility. Each receives a portion of the total output of the generating plants equal to its percentage ownership. The share of fuel and other operating costs associated with the plants is included in the corresponding operating expenses on the Statements of Income.

X
- Definition Disclosure of proportionate interests in jointly owned utility plants. Includes the amount of plants in service, the accumulated provision for depreciation (if available), the amount of plants under construction, and the proportionate share. The amounts presented may be further subdivided to show amounts applicable to plant subcategories (for example, production, transmission, distribution). Includes statements that the amounts represent the utility's share in each joint plant and that it must provide its own financing. Information concerning two or more generating plants on the same site may be combined. States that the utility's share of direct expenses of the joint plants is included in the corresponding operating expenses on its income statement (for example, fuel, maintenance of plant, other operating expense). If the share of direct expenses is charged to purchased power, then disclose the amount so charged and the proportionate amounts charged to specific operating expenses on the records maintained for the joint plants. + References No definition available. + Details
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