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Leases (Tables) | 12 Months Ended
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Dec. 31, 2017
Leases [Abstract] |
Rentals for capital and operating leases | Operating lease expense for 2017, 2016 and 2015, is summarized as follows:
(In millions) |  | 2017 |  | 2016 |  | 2015
FirstEnergy |  | $ | 158 |  |  | $ | 168 |  |  | $ | 174 |
FES |  | $ | 93 |  |  | $ | 94 |  |  | $ | 94 |
Future minimum capital lease payments | The future minimum capital lease payments as of December 31, 2017 are as follows:
Capital Leases |  | FirstEnergy |  | FES
|  | (In millions)
2018 |  | $ | 28 |  |  | $ | 2 |
2019 |  | 23 |  |  | — |
2020 |  | 18 |  |  | — |
2021 |  | 15 |  |  | — |
2022 |  | 13 |  |  | — |
Years thereafter |  | 20 |  |  | — |
Total minimum lease payments |  | 117 |  |  | 2 |
Interest portion |  | (26 | ) |  | — |
Present value of net minimum lease payments |  | 91 |  |  | 2 |
Less current portion |  | 24 |  |  | 2 |
Noncurrent portion |  | $ | 67 |  |  | $ | — |
Future minimum operating lease payments | future minimum operating lease payments as of December 31, 2017, are as follows:
Operating Leases |  | FirstEnergy |  | FES |
|  | (In millions) |
2018 |  | $ | 146 |  |  | $ | 101 |  |
2019 |  | 128 |  |  | 97 |  |
2020 |  | 102 |  |  | 68 |  |
2021 |  | 124 |  |  | 93 |  |
2022 |  | 111 |  |  | 91 |  |
Years thereafter |  | 1,263 |  |  | 1,131 |  |
Total minimum lease payments |  | $ | 1,874 |  |  | $ | 1,581 |  |

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