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Segment Information (Tables) | 3 Months Ended
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Mar. 31, 2021
Segment Reporting [Abstract] |
Segment Financial Information | Financial information for each of FirstEnergy’s reportable segments is presented in the tables below: Segment Financial Information
For the Three Months Ended |  | Regulated Distribution |  | Regulated Transmission |  | Corporate/ Other |  | Reconciling Adjustments |  | FirstEnergy Consolidated
|  | (In millions)
March 31, 2021 |  |  |  |  |  |  |  |  |  |
External revenues |  | $ | 2,321 |  |  | $ | 401 |  |  | $ | 4 |  |  | $ | — |  |  | $ | 2,726 |
Internal revenues |  | 49 |  |  | 4 |  |  | — |  |  | (53) |  |  | — |
Total revenues |  | $ | 2,370 |  |  | $ | 405 |  |  | $ | 4 |  |  | $ | (53) |  |  | $ | 2,726 |
Depreciation |  | 226 |  |  | 81 |  |  | 1 |  |  | 15 |  |  | 323 |
Amortization of regulatory assets, net |  | 87 |  |  | 5 |  |  | — |  |  | — |  |  | 92 |
Miscellaneous income (expense), net |  | 107 |  |  | 11 |  |  | 22 |  |  | (5) |  |  | 135 |
Interest expense |  | 128 |  |  | 61 |  |  | 101 |  |  | (5) |  |  | 285 |
Income taxes (benefits) |  | 82 |  |  | 33 |  |  | (28) |  |  | — |  |  | 87 |
Income (loss) from continuing operations |  | 313 |  |  | 109 |  |  | (87) |  |  | — |  |  | 335 |
Property additions |  | $ | 321 |  |  | $ | 273 |  |  | $ | 10 |  |  | $ | — |  |  | $ | 604 |
March 31, 2020 |  |  |  |  |  |  |  |  |  |
External revenues |  | $ | 2,311 |  |  | $ | 397 |  |  | $ | 1 |  |  | $ | — |  |  | $ | 2,709 |
Internal revenues |  | 47 |  |  | 4 |  |  | — |  |  | (51) |  |  | — |
Total revenues |  | $ | 2,358 |  |  | $ | 401 |  |  | $ | 1 |  |  | $ | (51) |  |  | $ | 2,709 |
Depreciation |  | 223 |  |  | 76 |  |  | 2 |  |  | 16 |  |  | 317 |
Amortization of regulatory assets, net |  | 49 |  |  | 3 |  |  | — |  |  | — |  |  | 52 |
Miscellaneous income (expense), net |  | 75 |  |  | 6 |  |  | 25 |  |  | (6) |  |  | 100 |
Interest expense |  | 127 |  |  | 52 |  |  | 90 |  |  | (6) |  |  | 263 |
Income taxes (benefits) |  | (32) |  |  | 34 |  |  | (62) |  |  | — |  |  | (60) |
Income (loss) from continuing operations |  | 136 |  |  | 117 |  |  | (229) |  |  | — |  |  | 24 |
Property additions |  | $ | 338 |  |  | $ | 269 |  |  | $ | 9 |  |  | $ | — |  |  | $ | 616 |
As of March 31, 2021 |  |  |  |  |  |  |  |  |  |
Total assets |  | $ | 30,331 |  |  | $ | 12,753 |  |  | $ | 1,033 |  |  | $ | — |  |  | $ | 44,117 |
Total goodwill |  | $ | 5,004 |  |  | $ | 614 |  |  | $ | — |  |  | $ | — |  |  | $ | 5,618 |
As of December 31, 2020 |  |  |  |  |  |  |  |  |  |
Total assets |  | $ | 30,855 |  |  | $ | 12,592 |  |  | $ | 1,017 |  |  | $ | — |  |  | $ | 44,464 |
Total goodwill |  | $ | 5,004 |  |  | $ | 614 |  |  | $ | — |  |  | $ | — |  |  | $ | 5,618 |

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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8736-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8813-108599 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8906-108599 + Details
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