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Variable Interest Entities (Tables) | 12 Months Ended
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Dec. 31, 2016
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 December 31, 2016:
| Maximum Exposure |  | Discounted Lease Payments, net |  | Net Exposure
| (In millions)
FirstEnergy | $ | 1,123 |  |  | $ | 879 |  |  | $ | 244 |
FES | $ | 1,098 |  |  | $ | 875 |  |  | $ | 223 |

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