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Variable Interest Entities (Tables) | 6 Months Ended
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Jun. 30, 2017
Variable Interest Entities [Abstract] |
Net exposure to loss based upon the casualty value provisions | The following table discloses each company’s net exposure to loss based upon the casualty value provisions as of June 30, 2017:
| Maximum Exposure |  | Discounted Lease Payments, net |  | Net Exposure
| (In millions)
FirstEnergy and FES | $ | 1,081 |  |  | $ | 859 |  |  | $ | 222 |

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