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Supplemental Guarantor Information (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Consolidating Statements of Income |  |  |  |  |  |  |  |  |  |  |  |  |  |
REVENUES | $ 3,375 | $ 3,917 | $ 3,401 | $ 3,869 | $ 3,541 | $ 4,123 | $ 3,465 | $ 3,897 | $ 14,562 | [1] | $ 15,026 | [1] | $ 15,049 | [1]
OPERATING EXPENSES: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fuel |  |  |  |  |  |  |  |  | 1,666 |  | 1,855 |  | 2,280 |
Purchased power |  |  |  |  |  |  |  |  | 3,813 |  | 4,318 |  | 4,716 |
Other operating expenses | 1,023 | 953 | 964 | 918 | 950 | 842 | 900 | 1,057 | 3,858 |  | 3,749 |  | 3,962 |
Pension and OPEB mark-to-market adjustment | 147 | 0 | 0 | 0 | 242 | 0 | 0 | 0 | 147 |  | 242 |  | 835 |
Provision for depreciation | 339 | 311 | 334 | 329 | 313 | 328 | 322 | 319 | 1,313 |  | 1,282 |  | 1,220 |
General taxes |  |  |  |  |  |  |  |  | 1,042 |  | 978 |  | 962 |
Impairment of assets | 9,218 | 0 | 1,447 | 0 | 18 | 8 | 16 | 0 | 10,665 |  | 42 |  | 0 |
Total operating expenses |  |  |  |  |  |  |  |  | 22,824 |  | 12,734 |  | 13,987 |
OPERATING INCOME (LOSS) | (8,924) | 861 | (975) | 776 | 236 | 908 | 554 | 594 | (8,262) |  | 2,292 |  | 1,062 |
OTHER INCOME (EXPENSE): |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment income (loss), including net income from equity investees |  |  |  |  |  |  |  |  | 84 |  | (22) |  | 72 |
Interest expense |  |  |  |  |  |  |  |  | (1,157) |  | (1,132) |  | (1,081) |
Capitalized financing costs |  |  |  |  |  |  |  |  | 103 |  | 117 |  | 118 |
Total other expense |  |  |  |  |  |  |  |  | (970) |  | (1,399) |  | (891) |
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES (BENEFITS) |  |  |  |  |  |  |  |  | (9,232) |  | 893 |  | 171 |
INCOME TAXES (BENEFITS) | (3,389) | 251 | (130) | 213 | (170) | 226 | 115 | 144 | (3,055) |  | 315 |  | (42) |
INCOME (LOSS) FROM CONTINUING OPERATIONS |  |  |  |  |  |  |  |  | (6,177) |  | 578 |  | 213 |
Discontinued operations (net of income taxes of $69) (Note 20) |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 86 |
NET INCOME (LOSS) | (5,796) | 380 | (1,089) | 328 | (226) | 395 | 187 | 222 | (6,177) |  | 578 |  | 299 |
STATEMENTS OF COMPREHENSIVE INCOME (LOSS) |  |  |  |  |  |  |  |  |  |  |  |  |  |
NET INCOME (LOSS) | (5,796) | 380 | (1,089) | 328 | (226) | 395 | 187 | 222 | (6,177) |  | 578 |  | 299 |
Pension and OPEB prior service costs |  |  |  |  |  |  |  |  | (59) |  | (116) |  | (76) |
Amortized gain on derivative hedges |  |  |  |  |  |  |  |  | 8 |  | 5 |  | (2) |
Change in unrealized gain on available-for-sale securities |  |  |  |  |  |  |  |  | 55 |  | (11) |  | 26 |
Other comprehensive income (loss) |  |  |  |  |  |  |  |  | 4 |  | (122) |  | (52) |
Income taxes (benefits) on other comprehensive income (loss ) |  |  |  |  |  |  |  |  | 1 |  | (47) |  | (14) |
Other comprehensive income (loss), net of tax |  |  |  |  |  |  |  |  | 3 |  | (75) |  | (38) |
Tax effect of discontinued operations |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 69 |
Eliminations |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidating Statements of Income |  |  |  |  |  |  |  |  |  |  |  |  |  |
REVENUES |  |  |  |  |  |  |  |  | (3,587) |  | (3,758) |  | (3,920) |
OPERATING EXPENSES: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fuel |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |
Other operating expenses |  |  |  |  |  |  |  |  | 49 |  | 49 |  | 49 |
Pension and OPEB mark-to-market adjustment |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |
Provision for depreciation |  |  |  |  |  |  |  |  | (3) |  | (3) |  | (3) |
General taxes |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |
Impairment of assets |  |  |  |  |  |  |  |  | (83) |  | 0 |  |  |
Total operating expenses |  |  |  |  |  |  |  |  | (3,624) |  | (3,712) |  | (3,874) |
OPERATING INCOME (LOSS) |  |  |  |  |  |  |  |  | 37 |  | (46) |  | (46) |
OTHER INCOME (EXPENSE): |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment income (loss), including net income from equity investees |  |  |  |  |  |  |  |  | 4,538 |  | (870) |  | (799) |
Miscellaneous income |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |
Capitalized financing costs |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |
Total other expense |  |  |  |  |  |  |  |  | 4,652 |  | (778) |  | (724) |
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES (BENEFITS) |  |  |  |  |  |  |  |  | 4,689 |  | (824) |  | (770) |
INCOME TAXES (BENEFITS) |  |  |  |  |  |  |  |  | 35 |  | 15 |  | 6 |
INCOME (LOSS) FROM CONTINUING OPERATIONS |  |  |  |  |  |  |  |  |  |  |  |  | (776) |
Discontinued operations (net of income taxes of $69) (Note 20) |  |  |  |  |  |  |  |  |  |  |  |  | 0 |
NET INCOME (LOSS) |  |  |  |  |  |  |  |  | 4,654 |  | (839) |  | (776) |
STATEMENTS OF COMPREHENSIVE INCOME (LOSS) |  |  |  |  |  |  |  |  |  |  |  |  |  |
NET INCOME (LOSS) |  |  |  |  |  |  |  |  | 4,654 |  | (839) |  | (776) |
Pension and OPEB prior service costs |  |  |  |  |  |  |  |  | 14 |  | 5 |  | 5 |
Amortized gain on derivative hedges |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |
Change in unrealized gain on available-for-sale securities |  |  |  |  |  |  |  |  | (52) |  | 8 |  | (21) |
Other comprehensive income (loss) |  |  |  |  |  |  |  |  | (38) |  | 13 |  | (16) |
Income taxes (benefits) on other comprehensive income (loss ) |  |  |  |  |  |  |  |  | (15) |  | 5 |  | (6) |
Other comprehensive income (loss), net of tax |  |  |  |  |  |  |  |  | (23) |  | 8 |  | (10) |
COMPREHENSIVE INCOME (LOSS) |  |  |  |  |  |  |  |  | 4,631 |  | (831) |  | (786) |
Eliminations | Affiliates |  |  |  |  |  |  |  |  |  |  |  |  |  |
OPERATING EXPENSES: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchased power |  |  |  |  |  |  |  |  | (3,587) |  | (3,758) |  | (3,920) |
OTHER INCOME (EXPENSE): |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  |  |  |  |  | 57 |  | 34 |  | 15 |
Eliminations | Non-Affiliates |  |  |  |  |  |  |  |  |  |  |  |  |  |
OPERATING EXPENSES: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchased power |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |
OTHER INCOME (EXPENSE): |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  |  |  |  |  | 57 |  | 58 |  | 60 |
FES |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidating Statements of Income |  |  |  |  |  |  |  |  |  |  |  |  |  |
REVENUES |  |  |  |  |  |  |  |  | 4,242 |  | 4,824 |  | 5,990 |
OPERATING EXPENSES: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fuel |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |
Other operating expenses |  |  |  |  |  |  |  |  | 310 |  | 378 |  | 790 |
Pension and OPEB mark-to-market adjustment |  |  |  |  |  |  |  |  | (1) |  | (8) |  | 19 |
Provision for depreciation |  |  |  |  |  |  |  |  | 13 |  | 12 |  | 10 |
General taxes |  |  |  |  |  |  |  |  | 31 |  | 45 |  | 72 |
Impairment of assets |  |  |  |  |  |  |  |  | 39 |  | 21 |  |  |
Total operating expenses |  |  |  |  |  |  |  |  | 5,436 |  | 5,958 |  | 7,578 |
OPERATING INCOME (LOSS) |  |  |  |  |  |  |  |  | (1,194) |  | (1,134) |  | (1,588) |
OTHER INCOME (EXPENSE): |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment income (loss), including net income from equity investees |  |  |  |  |  |  |  |  | (4,585) |  | 844 |  | 791 |
Miscellaneous income |  |  |  |  |  |  |  |  | 4 |  | 1 |  | 2 |
Capitalized financing costs |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |
Total other expense |  |  |  |  |  |  |  |  | (4,686) |  | 764 |  | 725 |
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES (BENEFITS) |  |  |  |  |  |  |  |  | (5,880) |  | (370) |  | (863) |
INCOME TAXES (BENEFITS) |  |  |  |  |  |  |  |  | (425) |  | (452) |  | (619) |
INCOME (LOSS) FROM CONTINUING OPERATIONS |  |  |  |  |  |  |  |  |  |  |  |  | (244) |
Discontinued operations (net of income taxes of $69) (Note 20) |  |  |  |  |  |  |  |  |  |  |  |  | 0 |
NET INCOME (LOSS) |  |  |  |  |  |  |  |  | (5,455) |  | 82 |  | (244) |
STATEMENTS OF COMPREHENSIVE INCOME (LOSS) |  |  |  |  |  |  |  |  |  |  |  |  |  |
NET INCOME (LOSS) |  |  |  |  |  |  |  |  | (5,455) |  | 82 |  | (244) |
Pension and OPEB prior service costs |  |  |  |  |  |  |  |  | (14) |  | (6) |  | (6) |
Amortized gain on derivative hedges |  |  |  |  |  |  |  |  | 0 |  | (3) |  | (10) |
Change in unrealized gain on available-for-sale securities |  |  |  |  |  |  |  |  | 52 |  | (9) |  | 21 |
Other comprehensive income (loss) |  |  |  |  |  |  |  |  | 38 |  | (18) |  | 5 |
Income taxes (benefits) on other comprehensive income (loss ) |  |  |  |  |  |  |  |  | 15 |  | (7) |  | 2 |
Other comprehensive income (loss), net of tax |  |  |  |  |  |  |  |  | 23 |  | (11) |  | 3 |
COMPREHENSIVE INCOME (LOSS) |  |  |  |  |  |  |  |  | (5,432) |  | 71 |  | (241) |
FES | Affiliates |  |  |  |  |  |  |  |  |  |  |  |  |  |
OPERATING EXPENSES: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchased power |  |  |  |  |  |  |  |  | 4,024 |  | 3,826 |  | 3,920 |
OTHER INCOME (EXPENSE): |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  |  |  |  |  | (50) |  | (29) |  | (12) |
FES | Non-Affiliates |  |  |  |  |  |  |  |  |  |  |  |  |  |
OPERATING EXPENSES: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchased power |  |  |  |  |  |  |  |  | 1,020 |  | 1,684 |  | 2,767 |
OTHER INCOME (EXPENSE): |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  |  |  |  |  | (55) |  | (52) |  | (56) |
FG |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidating Statements of Income |  |  |  |  |  |  |  |  |  |  |  |  |  |
REVENUES |  |  |  |  |  |  |  |  | 1,739 |  | 1,801 |  | 1,902 |
OPERATING EXPENSES: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fuel |  |  |  |  |  |  |  |  | 582 |  | 679 |  | 1,055 |
Other operating expenses |  |  |  |  |  |  |  |  | 286 |  | 273 |  | 269 |
Pension and OPEB mark-to-market adjustment |  |  |  |  |  |  |  |  | (4) |  | 10 |  | 90 |
Provision for depreciation |  |  |  |  |  |  |  |  | 120 |  | 124 |  | 119 |
General taxes |  |  |  |  |  |  |  |  | 30 |  | 26 |  | 31 |
Impairment of assets |  |  |  |  |  |  |  |  | 3,937 |  | 2 |  |  |
Total operating expenses |  |  |  |  |  |  |  |  | 4,951 |  | 1,114 |  | 1,568 |
OPERATING INCOME (LOSS) |  |  |  |  |  |  |  |  | (3,212) |  | 687 |  | 334 |
OTHER INCOME (EXPENSE): |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment income (loss), including net income from equity investees |  |  |  |  |  |  |  |  | 30 |  | 17 |  | 8 |
Miscellaneous income |  |  |  |  |  |  |  |  | 3 |  | 2 |  | 4 |
Capitalized financing costs |  |  |  |  |  |  |  |  | 8 |  | 6 |  | 4 |
Total other expense |  |  |  |  |  |  |  |  | (74) |  | (87) |  | (92) |
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES (BENEFITS) |  |  |  |  |  |  |  |  | (3,286) |  | 600 |  | 242 |
INCOME TAXES (BENEFITS) |  |  |  |  |  |  |  |  | (1,169) |  | 224 |  | 87 |
INCOME (LOSS) FROM CONTINUING OPERATIONS |  |  |  |  |  |  |  |  |  |  |  |  | 155 |
Discontinued operations (net of income taxes of $69) (Note 20) |  |  |  |  |  |  |  |  |  |  |  |  | 116 |
NET INCOME (LOSS) |  |  |  |  |  |  |  |  | (2,117) |  | 376 |  | 271 |
STATEMENTS OF COMPREHENSIVE INCOME (LOSS) |  |  |  |  |  |  |  |  |  |  |  |  |  |
NET INCOME (LOSS) |  |  |  |  |  |  |  |  | (2,117) |  | 376 |  | 271 |
Pension and OPEB prior service costs |  |  |  |  |  |  |  |  | (14) |  | (5) |  | (5) |
Amortized gain on derivative hedges |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |
Change in unrealized gain on available-for-sale securities |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |
Other comprehensive income (loss) |  |  |  |  |  |  |  |  | (14) |  | (5) |  | (5) |
Income taxes (benefits) on other comprehensive income (loss ) |  |  |  |  |  |  |  |  | (5) |  | (2) |  | (2) |
Other comprehensive income (loss), net of tax |  |  |  |  |  |  |  |  | (9) |  | (3) |  | (3) |
COMPREHENSIVE INCOME (LOSS) |  |  |  |  |  |  |  |  | (2,126) |  | 373 |  | 268 |
FG | Affiliates |  |  |  |  |  |  |  |  |  |  |  |  |  |
OPERATING EXPENSES: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchased power |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |
OTHER INCOME (EXPENSE): |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  |  |  |  |  | (10) |  | (8) |  | (6) |
FG | Non-Affiliates |  |  |  |  |  |  |  |  |  |  |  |  |  |
OPERATING EXPENSES: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchased power |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 4 |
OTHER INCOME (EXPENSE): |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  |  |  |  |  | (105) |  | (104) |  | (102) |
NG |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidating Statements of Income |  |  |  |  |  |  |  |  |  |  |  |  |  |
REVENUES |  |  |  |  |  |  |  |  | 2,004 |  | 2,138 |  | 2,172 |
OPERATING EXPENSES: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fuel |  |  |  |  |  |  |  |  | 198 |  | 192 |  | 198 |
Other operating expenses |  |  |  |  |  |  |  |  | 632 |  | 608 |  | 527 |
Pension and OPEB mark-to-market adjustment |  |  |  |  |  |  |  |  | 53 |  | 55 |  | 188 |
Provision for depreciation |  |  |  |  |  |  |  |  | 206 |  | 191 |  | 193 |
General taxes |  |  |  |  |  |  |  |  | 27 |  | 27 |  | 25 |
Impairment of assets |  |  |  |  |  |  |  |  | 4,729 |  | 10 |  |  |
Total operating expenses |  |  |  |  |  |  |  |  | 6,032 |  | 1,368 |  | 1,402 |
OPERATING INCOME (LOSS) |  |  |  |  |  |  |  |  | (4,028) |  | 770 |  | 770 |
OTHER INCOME (EXPENSE): |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment income (loss), including net income from equity investees |  |  |  |  |  |  |  |  | 84 |  | (5) |  | 61 |
Miscellaneous income |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |
Capitalized financing costs |  |  |  |  |  |  |  |  | 26 |  | 29 |  | 30 |
Total other expense |  |  |  |  |  |  |  |  | 62 |  | (29) |  | 33 |
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES (BENEFITS) |  |  |  |  |  |  |  |  | (3,966) |  | 741 |  | 803 |
INCOME TAXES (BENEFITS) |  |  |  |  |  |  |  |  | (1,429) |  | 278 |  | 298 |
INCOME (LOSS) FROM CONTINUING OPERATIONS |  |  |  |  |  |  |  |  |  |  |  |  | 505 |
Discontinued operations (net of income taxes of $69) (Note 20) |  |  |  |  |  |  |  |  |  |  |  |  | 0 |
NET INCOME (LOSS) |  |  |  |  |  |  |  |  | (2,537) |  | 463 |  | 505 |
STATEMENTS OF COMPREHENSIVE INCOME (LOSS) |  |  |  |  |  |  |  |  |  |  |  |  |  |
NET INCOME (LOSS) |  |  |  |  |  |  |  |  | (2,537) |  | 463 |  | 505 |
Pension and OPEB prior service costs |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |
Amortized gain on derivative hedges |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |
Change in unrealized gain on available-for-sale securities |  |  |  |  |  |  |  |  | 52 |  | (8) |  | 21 |
Other comprehensive income (loss) |  |  |  |  |  |  |  |  | 52 |  | (8) |  | 21 |
Income taxes (benefits) on other comprehensive income (loss ) |  |  |  |  |  |  |  |  | 20 |  | (3) |  | 8 |
Other comprehensive income (loss), net of tax |  |  |  |  |  |  |  |  | 32 |  | (5) |  | 13 |
COMPREHENSIVE INCOME (LOSS) |  |  |  |  |  |  |  |  | (2,505) |  | 458 |  | 518 |
NG | Affiliates |  |  |  |  |  |  |  |  |  |  |  |  |  |
OPERATING EXPENSES: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchased power |  |  |  |  |  |  |  |  | 187 |  | 285 |  | 271 |
OTHER INCOME (EXPENSE): |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  |  |  |  |  | (4) |  | (4) |  | (4) |
NG | Non-Affiliates |  |  |  |  |  |  |  |  |  |  |  |  |  |
OPERATING EXPENSES: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchased power |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 |
OTHER INCOME (EXPENSE): |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  |  |  |  |  | (44) |  | (49) |  | (54) |
FES |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidating Statements of Income |  |  |  |  |  |  |  |  |  |  |  |  |  |
REVENUES | 997 | 1,100 | 1,102 | 1,199 | 1,171 | 1,338 | 1,119 | 1,377 | 4,398 | [2] | 5,005 | [2] | 6,144 | [2]
OPERATING EXPENSES: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fuel |  |  |  |  |  |  |  |  | 780 |  | 871 |  | 1,253 |
Other operating expenses | 352 | 316 | 369 | 240 | 312 | 246 | 337 | 413 | 1,277 |  | 1,308 |  | 1,635 |
Pension and OPEB mark-to-market adjustment | 48 | 0 | 0 | 0 | 57 | 0 | 0 | 0 | 48 |  | 57 |  | 297 |
Provision for depreciation | 86 | 83 | 84 | 83 | 84 | 79 | 81 | 80 | 336 |  | 324 |  | 319 |
General taxes |  |  |  |  |  |  |  |  | 88 |  | 98 |  | 128 |
Impairment of assets | 8,082 | 0 | 540 | 0 | 17 | 0 | 16 | 0 | 8,622 |  | 33 |  | 0 |
Total operating expenses |  |  |  |  |  |  |  |  | 12,795 |  | 4,728 |  | 6,674 |
OPERATING INCOME (LOSS) | (8,153) | 101 | (571) | 226 | 25 | 240 | 0 | 12 | (8,397) |  | 277 |  | (530) |
OTHER INCOME (EXPENSE): |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment income (loss), including net income from equity investees |  |  |  |  |  |  |  |  | 67 |  | (14) |  | 61 |
Miscellaneous income |  |  |  |  |  |  |  |  | 7 |  | 3 |  | 6 |
Capitalized financing costs |  |  |  |  |  |  |  |  | 34 |  | 35 |  | 34 |
Total other expense |  |  |  |  |  |  |  |  | (46) |  | (130) |  | (58) |
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES (BENEFITS) |  |  |  |  |  |  |  |  | (8,443) |  | 147 |  | (588) |
INCOME TAXES (BENEFITS) | (2,983) | 56 | (143) | 82 | 1 | 70 | (4) | (2) | (2,988) |  | 65 |  | (228) |
INCOME (LOSS) FROM CONTINUING OPERATIONS |  |  |  |  |  |  |  |  | (5,455) |  | 82 |  | (360) |
Discontinued operations (net of income taxes of $69) (Note 20) |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 116 |
NET INCOME (LOSS) | (5,188) | 40 | (438) | 131 | (14) | 120 | (21) | (3) | (5,455) |  | 82 |  | (244) |
STATEMENTS OF COMPREHENSIVE INCOME (LOSS) |  |  |  |  |  |  |  |  |  |  |  |  |  |
NET INCOME (LOSS) | $ (5,188) | $ 40 | $ (438) | $ 131 | $ (14) | $ 120 | $ (21) | $ (3) | (5,455) |  | 82 |  | (244) |
Pension and OPEB prior service costs |  |  |  |  |  |  |  |  | (14) |  | (6) |  | (6) |
Amortized gain on derivative hedges |  |  |  |  |  |  |  |  | 0 |  | (3) |  | (10) |
Change in unrealized gain on available-for-sale securities |  |  |  |  |  |  |  |  | 52 |  | (9) |  | 21 |
Other comprehensive income (loss) |  |  |  |  |  |  |  |  | 38 |  | (18) |  | 5 |
Income taxes (benefits) on other comprehensive income (loss ) |  |  |  |  |  |  |  |  | 15 |  | (7) |  | 2 |
Other comprehensive income (loss), net of tax |  |  |  |  |  |  |  |  | 23 |  | (11) |  | 3 |
COMPREHENSIVE INCOME (LOSS) |  |  |  |  |  |  |  |  | (5,432) |  | 71 |  | (241) |
Tax effect of discontinued operations |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 70 |
FES | Affiliates |  |  |  |  |  |  |  |  |  |  |  |  |  |
OPERATING EXPENSES: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchased power |  |  |  |  |  |  |  |  | 624 |  | 353 |  | 271 |
OTHER INCOME (EXPENSE): |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  |  |  |  |  | (7) |  | (7) |  | (7) |
FES | Non-Affiliates |  |  |  |  |  |  |  |  |  |  |  |  |  |
OPERATING EXPENSES: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchased power |  |  |  |  |  |  |  |  | 1,020 |  | 1,684 |  | 2,771 |
OTHER INCOME (EXPENSE): |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  |  |  |  |  | $ (147) |  | $ (147) |  | $ (152) |
[1] | Includes excise tax collections of $406 million, $416 million and $420 million in 2016, 2015 and 2014, respectively.
[2] | Includes excise tax collections of $28 million, $44 million and $69 million in 2016, 2015 and 2014, respectively.

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