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Leases (Tables) | 12 Months Ended
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Dec. 31, 2017
Leases [Line Items] |
Rent Expense for Operating Leases | Rent expense for the years ended December 31 for operating leases was as follows:
| 2017 |  | 2016 |  | 2015
PPL | $ | 45 |  |  | $ | 50 |  |  | $ | 49 |
LKE | 26 |  |  | 26 |  |  | 24 |
LG&E | 15 |  |  | 15 |  |  | 12 |
KU | 11 |  |  | 11 |  |  | 11 |
Future Minimum Rental Payments for All Operating Leases | Total future minimum rental payments for all operating leases are estimated to be:
| PPL |  | LKE |  | LG&E |  | KU
2018 | $ | 32 |  |  | $ | 26 |  |  | $ | 15 |  |  | $ | 10 |
2019 | 19 |  |  | 16 |  |  | 8 |  |  | 8 |
2020 | 13 |  |  | 11 |  |  | 5 |  |  | 6 |
2021 | 10 |  |  | 8 |  |  | 3 |  |  | 5 |
2022 | 8 |  |  | 6 |  |  | 2 |  |  | 4 |
Thereafter | 22 |  |  | 15 |  |  | 6 |  |  | 8 |
Total | $ | 104 |  |  | $ | 82 |  |  | $ | 39 |  |  | $ | 41 |
LG And E And KU Energy LLC [Member] |
Leases [Line Items] |
Rent Expense for Operating Leases | Rent expense for the years ended December 31 for operating leases was as follows:
| 2017 |  | 2016 |  | 2015
PPL | $ | 45 |  |  | $ | 50 |  |  | $ | 49 |
LKE | 26 |  |  | 26 |  |  | 24 |
LG&E | 15 |  |  | 15 |  |  | 12 |
KU | 11 |  |  | 11 |  |  | 11 |
Future Minimum Rental Payments for All Operating Leases | Total future minimum rental payments for all operating leases are estimated to be:
| PPL |  | LKE |  | LG&E |  | KU
2018 | $ | 32 |  |  | $ | 26 |  |  | $ | 15 |  |  | $ | 10 |
2019 | 19 |  |  | 16 |  |  | 8 |  |  | 8 |
2020 | 13 |  |  | 11 |  |  | 5 |  |  | 6 |
2021 | 10 |  |  | 8 |  |  | 3 |  |  | 5 |
2022 | 8 |  |  | 6 |  |  | 2 |  |  | 4 |
Thereafter | 22 |  |  | 15 |  |  | 6 |  |  | 8 |
Total | $ | 104 |  |  | $ | 82 |  |  | $ | 39 |  |  | $ | 41 |
Louisville Gas And Electric Co [Member] |
Leases [Line Items] |
Rent Expense for Operating Leases | Rent expense for the years ended December 31 for operating leases was as follows:
| 2017 |  | 2016 |  | 2015
PPL | $ | 45 |  |  | $ | 50 |  |  | $ | 49 |
LKE | 26 |  |  | 26 |  |  | 24 |
LG&E | 15 |  |  | 15 |  |  | 12 |
KU | 11 |  |  | 11 |  |  | 11 |
Future Minimum Rental Payments for All Operating Leases | Total future minimum rental payments for all operating leases are estimated to be:
| PPL |  | LKE |  | LG&E |  | KU
2018 | $ | 32 |  |  | $ | 26 |  |  | $ | 15 |  |  | $ | 10 |
2019 | 19 |  |  | 16 |  |  | 8 |  |  | 8 |
2020 | 13 |  |  | 11 |  |  | 5 |  |  | 6 |
2021 | 10 |  |  | 8 |  |  | 3 |  |  | 5 |
2022 | 8 |  |  | 6 |  |  | 2 |  |  | 4 |
Thereafter | 22 |  |  | 15 |  |  | 6 |  |  | 8 |
Total | $ | 104 |  |  | $ | 82 |  |  | $ | 39 |  |  | $ | 41 |
Kentucky Utilities Co [Member] |
Leases [Line Items] |
Rent Expense for Operating Leases | Rent expense for the years ended December 31 for operating leases was as follows:
| 2017 |  | 2016 |  | 2015
PPL | $ | 45 |  |  | $ | 50 |  |  | $ | 49 |
LKE | 26 |  |  | 26 |  |  | 24 |
LG&E | 15 |  |  | 15 |  |  | 12 |
KU | 11 |  |  | 11 |  |  | 11 |
Future Minimum Rental Payments for All Operating Leases | Total future minimum rental payments for all operating leases are estimated to be:
| PPL |  | LKE |  | LG&E |  | KU
2018 | $ | 32 |  |  | $ | 26 |  |  | $ | 15 |  |  | $ | 10 |
2019 | 19 |  |  | 16 |  |  | 8 |  |  | 8 |
2020 | 13 |  |  | 11 |  |  | 5 |  |  | 6 |
2021 | 10 |  |  | 8 |  |  | 3 |  |  | 5 |
2022 | 8 |  |  | 6 |  |  | 2 |  |  | 4 |
Thereafter | 22 |  |  | 15 |  |  | 6 |  |  | 8 |
Total | $ | 104 |  |  | $ | 82 |  |  | $ | 39 |  |  | $ | 41 |

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- Definition Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41502-112717 + Details
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- Definition Tabular disclosure of rental expense from operating leases for each period for which an income statement is presented with separate amounts for minimum rentals, contingent rentals, and sublease rentals. Rental payments under leases with terms of a month or less that were not renewed need not be included. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41499-112717 + Details
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