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Asset Impairments (Tables) | 12 Months Ended
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Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract] |
Impairment Assets | As a result, CES recorded a non-cash pre-tax impairment charge of $9,218 million ($8,082 million at FES) in the fourth quarter of 2016 to reduce the carrying value of certain assets to their estimated fair value, including long-lived assets, such as generating plants and nuclear fuel, as well as other assets, such as materials and supplies.
|  | FE Consolidated |  | FES Consolidated
Impaired Asset |  | Net Book Value | Fair Value | Impairment |  | Net Book Value | Fair Value | Impairment
|  | (In millions)
Coal generation assets |  | $ | 4,672 |  | $ | 614 |  | $ | 4,058 |  |  | $ | 3,699 |  | $ | 435 |  | $ | 3,264 |
Nuclear generation assets |  | 4,842 |  | 460 |  | 4,382 |  |  | 4,825 |  | 460 |  | 4,365 |
Gas/Hydro generation assets |  | 1,187 |  | 921 |  | 266 |  |  | — |  | — |  | — |
Nuclear Fuel |  | 703 |  | 460 |  | 243 |  |  | 703 |  | 460 |  | 243 |
Other assets (1) |  | 382 |  | 113 |  | 269 |  |  | 314 |  | 104 |  | 210 |
Totals |  | $ | 11,786 |  | $ | 2,568 |  | $ | 9,218 |  |  | $ | 9,541 |  | $ | 1,459 |  | $ | 8,082 |
(1) | Includes the impairment of materials and supplies ($142 million), AE Supply coal contracts ($55 million) and AE Supply's investment in OVEC ($37 million).

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- Definition Tabular disclosure for impairment of long-lived assets held and used by an entity which includes a description of the impaired long-lived asset and facts and circumstances leading to the impairment, aggregate amount of the impairment loss and where the loss is located in the income statement, method(s) for determining fair value, and the segment in which the impaired long-lived asset is reported. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64862545&loc=d3e2921-110230 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.CC) -URI http://asc.fasb.org/extlink&oid=27011434&loc=d3e125687-122742 + Details
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