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SEGMENT INFORMATION - Segment Financial Information (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2023 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Segment Financial Information |  |  |  |  |
Total revenues | [1] |  | $ 12,870 | $ 12,459 | $ 11,132
Total depreciation |  |  | 1,461 | 1,375 | 1,302
Total amortization (deferral) of regulatory assets, net |  |  | (261) | (365) | 269
Total DPA penalty |  |  | 0 | 0 | 230
Total equity method investment earnings |  |  | 175 | 168 | 31
Total interest expense |  |  | 1,124 | 1,039 | 1,139
Income taxes (benefits) |  | $ 65 | 267 | 1,000 | 320
Total earnings attributable to FE from continuing operations |  |  | 1,123 | 406 | 1,239
Total capital investments |  |  | 3,356 | 2,848 | 2,487
Assets |  |  | 48,767 | 46,108 |
Goodwill |  |  | 5,618 | 5,618 |
External revenues |  |  |  |  |
Segment Financial Information |  |  |  |  |
Total revenues |  |  | 12,870 | 12,459 | 11,132
Internal revenues |  |  |  |  |
Segment Financial Information |  |  |  |  |
Total revenues |  |  | 0 | 0 | 0
Regulated Distribution |  |  |  |  |
Segment Financial Information |  |  |  |  |
Goodwill |  |  | 5,004 | 5,004 |
Operating Segments | Regulated Distribution |  |  |  |  |
Segment Financial Information |  |  |  |  |
Total revenues |  |  | 11,038 | 10,801 | 9,711
Total depreciation |  |  | 1,021 | 967 | 911
Total amortization (deferral) of regulatory assets, net |  |  | (256) | (362) | 260
Total equity method investment earnings |  |  | 0 | 0 | 0
Total interest expense |  |  | 618 | 526 | 522
Income taxes (benefits) |  |  | 167 | 251 | 364
Total earnings attributable to FE from continuing operations |  |  | 740 | 957 | 1,288
Total capital investments |  |  | 1,631 | 1,605 | 1,437
Assets |  |  | 32,929 | 31,749 |
Goodwill |  |  | 5,004 | 5,004 |
Operating Segments | Regulated Distribution | External revenues |  |  |  |  |
Segment Financial Information |  |  |  |  |
Total revenues |  |  | 10,810 | 10,569 | 9,510
Operating Segments | Regulated Distribution | Internal revenues |  |  |  |  |
Segment Financial Information |  |  |  |  |
Total revenues |  |  | 228 | 232 | 201
Operating Segments | Regulated Transmission |  |  |  |  |
Segment Financial Information |  |  |  |  |
Total revenues |  |  | 2,054 | 1,868 | 1,618
Total depreciation |  |  | 367 | 335 | 325
Total amortization (deferral) of regulatory assets, net |  |  | (5) | (3) | 9
Total equity method investment earnings |  |  | 0 | 0 | 0
Total interest expense |  |  | 256 | 230 | 247
Income taxes (benefits) |  |  | 179 | 110 | 127
Total earnings attributable to FE from continuing operations |  |  | 514 | 361 | 408
Total capital investments |  |  | 1,610 | 1,192 | 958
Assets |  |  | 15,155 | 13,835 |
Goodwill |  |  | 614 | 614 |
Operating Segments | Regulated Transmission | External revenues |  |  |  |  |
Segment Financial Information |  |  |  |  |
Total revenues |  |  | 2,049 | 1,863 | 1,608
Operating Segments | Regulated Transmission | Internal revenues |  |  |  |  |
Segment Financial Information |  |  |  |  |
Total revenues |  |  | 5 | 5 | 10
Corporate/Other |  |  |  |  |
Segment Financial Information |  |  |  |  |
Total revenues |  |  | (222) | (210) | (197)
Total depreciation |  |  | 4 | 7 | 3
Total amortization (deferral) of regulatory assets, net |  |  | 0 | 0 | 0
Total DPA penalty |  |  | 0 | 0 | 230
Total equity method investment earnings |  |  | 175 | 168 | 31
Total interest expense |  |  | 334 | 350 | 382
Income taxes (benefits) |  |  | (79) | 639 | (171)
Total earnings attributable to FE from continuing operations |  |  | (131) | (912) | (457)
Total capital investments |  |  | 115 | 51 | 92
Assets |  |  | 683 | 524 |
Goodwill |  |  | 0 | 0 |
Corporate/Other | External revenues |  |  |  |  |
Segment Financial Information |  |  |  |  |
Total revenues |  |  | 11 | 27 | 14
Corporate/Other | Internal revenues |  |  |  |  |
Segment Financial Information |  |  |  |  |
Total revenues |  |  | 0 | 0 | 0
Reconciling Adjustments |  |  |  |  |
Segment Financial Information |  |  |  |  |
Total depreciation |  |  | 69 | 66 | 63
Total amortization (deferral) of regulatory assets, net |  |  | 0 | 0 | 0
Total equity method investment earnings |  |  | 0 | 0 | 0
Total interest expense |  |  | (84) | (67) | (12)
Income taxes (benefits) |  |  | 0 | 0 | 0
Total earnings attributable to FE from continuing operations |  |  | 0 | 0 | 0
Total capital investments |  |  | 0 | 0 | 0
Assets |  |  | 0 | 0 |
Goodwill |  |  | 0 | 0 |
Reconciling Adjustments | External revenues |  |  |  |  |
Segment Financial Information |  |  |  |  |
Total revenues |  |  | 0 | 0 | 0
Reconciling Adjustments | Internal revenues |  |  |  |  |
Segment Financial Information |  |  |  |  |
Total revenues |  |  | $ (233) | $ (237) | $ (211)
[1] | Includes excise and gross receipts tax collections of $420 million, $406 million and $374 million in 2023, 2022 and 2021, respectively.

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