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v3.7.0.1

Supplemental Guarantor Information (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Consolidating Statements of Income |  |  |  |  |
Revenues | [1] | $ 3,309 | $ 3,401 | $ 6,861 | $ 7,270
OPERATING EXPENSES: |  |  |  |  |
Fuel |  | 343 | 438 | 711 | 819
Purchased power |  | 735 | 889 | 1,598 | 2,013
Other operating expenses |  | 957 | 964 | 2,099 | 1,882
Provision for depreciation |  | 281 | 334 | 556 | 663
General taxes |  | 253 | 241 | 524 | 521
Impairment of assets |  | 131 | 1,447 | 131 | 1,447
Total operating expenses |  | 2,765 | 4,376 | 5,743 | 7,469
OPERATING INCOME (LOSS) |  | 544 | (975) | 1,118 | (199)
OTHER INCOME (EXPENSE): |  |  |  |  |
Investment income (loss), including net income (loss) from equity investees |  | 17 | 19 | 41 | 47
Interest expense |  | (290) | (289) | (577) | (577)
Capitalized interest |  | 20 | 26 | 40 | 51
Total other expense |  | (253) | (244) | (496) | (479)
INCOME (LOSS) BEFORE INCOME TAXES (BENEFITS) |  | 291 | (1,219) | 622 | (678)
INCOME TAXES (BENEFITS) |  | 117 | (130) | 243 | 83
NET INCOME (LOSS) |  | 174 | (1,089) | 379 | (761)
NET INCOME |  | 174 | (1,089) | 379 | (761)
OTHER COMPREHENSIVE INCOME (LOSS): |  |  |  |  |
Pension and OPEB prior service costs |  | (18) | (18) | (36) | (36)
Amortized gains on derivative hedges |  | 1 | 2 | 4 | 4
Change in unrealized gains on available-for-sale securities |  | (2) | 35 | 14 | 63
Other comprehensive income (loss) |  | (19) | 19 | (18) | 31
Income taxes (benefits) on other comprehensive income (loss) |  | (7) | 7 | (7) | 11
Other comprehensive income (loss), net of tax |  | (12) | 12 | (11) | 20
COMPREHENSIVE INCOME (LOSS) |  | $ 162 | (1,077) | $ 368 | (741)
Bruce Mansfield Unit 1 |  |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |  |
Percentage of undivided interest of non guarantor subsidiary |  | 93.83% |  | 93.83% |
Eliminations |  |  |  |  |
Consolidating Statements of Income |  |  |  |  |
Revenues |  | $ (810) | (832) | $ (1,348) | (1,734)
OPERATING EXPENSES: |  |  |  |  |
Fuel |  | 0 | 0 | 0 | 0
Other operating expenses |  | 12 | 14 | 24 | 26
Provision for depreciation |  | (1) | (1) | (1) | (2)
General taxes |  | 0 | 0 | 0 | 0
Impairment of assets |  |  | 0 |  | 0
Total operating expenses |  | (799) | (819) | (1,325) | (1,710)
OPERATING INCOME (LOSS) |  | (11) | (13) | (23) | (24)
OTHER INCOME (EXPENSE): |  |  |  |  |
Investment income (loss), including net income (loss) from equity investees |  | (263) | 153 | (262) | (106)
Miscellaneous income |  |  | 0 | 0 | 0
Capitalized interest |  | 0 | 0 | 0 | 0
Total other expense |  | (230) | 181 | (195) | (53)
INCOME (LOSS) BEFORE INCOME TAXES (BENEFITS) |  | (241) | 168 | (218) | (77)
INCOME TAXES (BENEFITS) |  | 1 | 1 | 2 | 2
NET INCOME (LOSS) |  | (242) | 167 | (220) | (79)
NET INCOME |  | (242) | 167 | (220) | (79)
OTHER COMPREHENSIVE INCOME (LOSS): |  |  |  |  |
Pension and OPEB prior service costs |  | 4 | 4 | 7 | 7
Amortized gains on derivative hedges |  |  | 0 |  | 0
Change in unrealized gains on available-for-sale securities |  | (6) | (32) | (22) | (55)
Other comprehensive income (loss) |  | (2) | (28) | (15) | (48)
Income taxes (benefits) on other comprehensive income (loss) |  | 0 | (11) | (5) | (18)
Other comprehensive income (loss), net of tax |  | (2) | (17) | (10) | (30)
COMPREHENSIVE INCOME (LOSS) |  | (244) | 150 | (230) | (109)
Eliminations | Affiliates |  |  |  |  |
OPERATING EXPENSES: |  |  |  |  |
Purchased power |  | (810) | (832) | (1,348) | (1,734)
OTHER INCOME (EXPENSE): |  |  |  |  |
Interest expense |  | 19 | 13 | 39 | 24
Eliminations | Non-Affiliates |  |  |  |  |
OPERATING EXPENSES: |  |  |  |  |
Purchased power |  | 0 | 0 | 0 | 0
OTHER INCOME (EXPENSE): |  |  |  |  |
Interest expense |  | 14 | 15 | 28 | 29
FES |  |  |  |  |
Consolidating Statements of Income |  |  |  |  |
Revenues |  | 717 | 1,061 | 1,597 | 2,216
OPERATING EXPENSES: |  |  |  |  |
Fuel |  | 0 | 0 | 0 | 0
Other operating expenses |  | 63 | 119 | 177 | 123
Provision for depreciation |  | 3 | 3 | 6 | 6
General taxes |  | 5 | 7 | 11 | 15
Impairment of assets |  |  | 23 |  | 23
Total operating expenses |  | 1,038 | 1,368 | 1,984 | 2,687
OPERATING INCOME (LOSS) |  | (321) | (307) | (387) | (471)
OTHER INCOME (EXPENSE): |  |  |  |  |
Investment income (loss), including net income (loss) from equity investees |  | 247 | (163) | 229 | 86
Miscellaneous income |  |  | 1 | 0 | 3
Capitalized interest |  | 0 | 0 | 0 | 0
Total other expense |  | 215 | (187) | 168 | 42
INCOME (LOSS) BEFORE INCOME TAXES (BENEFITS) |  | (106) | (494) | (219) | (429)
INCOME TAXES (BENEFITS) |  | (125) | (56) | (158) | (122)
NET INCOME (LOSS) |  | 19 | (438) | (61) | (307)
NET INCOME |  | 19 | (438) | (61) | (307)
OTHER COMPREHENSIVE INCOME (LOSS): |  |  |  |  |
Pension and OPEB prior service costs |  | (4) | (3) | (7) | (7)
Amortized gains on derivative hedges |  |  | (1) |  | (1)
Change in unrealized gains on available-for-sale securities |  | 6 | 33 | 22 | 56
Other comprehensive income (loss) |  | 2 | 29 | 15 | 48
Income taxes (benefits) on other comprehensive income (loss) |  | 0 | 12 | 5 | 19
Other comprehensive income (loss), net of tax |  | 2 | 17 | 10 | 29
COMPREHENSIVE INCOME (LOSS) |  | 21 | (421) | (51) | (278)
FES | Affiliates |  |  |  |  |
OPERATING EXPENSES: |  |  |  |  |
Purchased power |  | 811 | 950 | 1,474 | 1,877
OTHER INCOME (EXPENSE): |  |  |  |  |
Interest expense |  | (20) | (12) | (38) | (21)
FES | Non-Affiliates |  |  |  |  |
OPERATING EXPENSES: |  |  |  |  |
Purchased power |  | 156 | 266 | 316 | 643
OTHER INCOME (EXPENSE): |  |  |  |  |
Interest expense |  | (12) | (13) | (23) | (26)
FG |  |  |  |  |
Consolidating Statements of Income |  |  |  |  |
Revenues |  | 474 | 400 | 710 | 815
OPERATING EXPENSES: |  |  |  |  |
Fuel |  | 106 | 181 | 204 | 300
Other operating expenses |  | 58 | 88 | 283 | 159
Provision for depreciation |  | 9 | 32 | 16 | 63
General taxes |  | 5 | 6 | 13 | 16
Impairment of assets |  |  | 517 |  | 517
Total operating expenses |  | 178 | 824 | 516 | 1,055
OPERATING INCOME (LOSS) |  | 296 | (424) | 194 | (240)
OTHER INCOME (EXPENSE): |  |  |  |  |
Investment income (loss), including net income (loss) from equity investees |  | 10 | 7 | 20 | 13
Miscellaneous income |  |  | 0 | 0 | 0
Capitalized interest |  | 0 | 2 | 1 | 4
Total other expense |  | (19) | (19) | (38) | (39)
INCOME (LOSS) BEFORE INCOME TAXES (BENEFITS) |  | 277 | (443) | 156 | (279)
INCOME TAXES (BENEFITS) |  | 102 | (149) | 60 | (88)
NET INCOME (LOSS) |  | 175 | (294) | 96 | (191)
NET INCOME |  | 175 | (294) | 96 | (191)
OTHER COMPREHENSIVE INCOME (LOSS): |  |  |  |  |
Pension and OPEB prior service costs |  | (4) | (4) | (7) | (7)
Amortized gains on derivative hedges |  |  | 0 |  | 0
Change in unrealized gains on available-for-sale securities |  | 0 | 0 | 0 | 0
Other comprehensive income (loss) |  | (4) | (4) | (7) | (7)
Income taxes (benefits) on other comprehensive income (loss) |  | (2) | (2) | (3) | (3)
Other comprehensive income (loss), net of tax |  | (2) | (2) | (4) | (4)
COMPREHENSIVE INCOME (LOSS) |  | 173 | (296) | 92 | (195)
FG | Affiliates |  |  |  |  |
OPERATING EXPENSES: |  |  |  |  |
Purchased power |  | 0 | 0 | 0 | 0
OTHER INCOME (EXPENSE): |  |  |  |  |
Interest expense |  | (3) | (2) | (6) | (4)
FG | Non-Affiliates |  |  |  |  |
OPERATING EXPENSES: |  |  |  |  |
Purchased power |  | 0 | 0 | 0 | 0
OTHER INCOME (EXPENSE): |  |  |  |  |
Interest expense |  | (26) | (26) | (53) | (52)
NG |  |  |  |  |
Consolidating Statements of Income |  |  |  |  |
Revenues |  | 360 | 473 | 696 | 1,004
OPERATING EXPENSES: |  |  |  |  |
Fuel |  | 48 | 47 | 94 | 93
Other operating expenses |  | 153 | 148 | 320 | 301
Provision for depreciation |  | 16 | 50 | 31 | 100
General taxes |  | 8 | 6 | 15 | 14
Impairment of assets |  |  | 0 |  | 0
Total operating expenses |  | 263 | 300 | 536 | 614
OPERATING INCOME (LOSS) |  | 97 | 173 | 160 | 390
OTHER INCOME (EXPENSE): |  |  |  |  |
Investment income (loss), including net income (loss) from equity investees |  | 21 | 22 | 48 | 39
Miscellaneous income |  |  | 0 | 5 | 0
Capitalized interest |  | 6 | 6 | 13 | 14
Total other expense |  | 15 | 15 | 42 | 27
INCOME (LOSS) BEFORE INCOME TAXES (BENEFITS) |  | 112 | 188 | 202 | 417
INCOME TAXES (BENEFITS) |  | 45 | 61 | 78 | 147
NET INCOME (LOSS) |  | 67 | 127 | 124 | 270
NET INCOME |  | 67 | 127 | 124 | 270
OTHER COMPREHENSIVE INCOME (LOSS): |  |  |  |  |
Pension and OPEB prior service costs |  | 0 | 0 | 0 | 0
Amortized gains on derivative hedges |  |  | 0 |  | 0
Change in unrealized gains on available-for-sale securities |  | 6 | 32 | 22 | 55
Other comprehensive income (loss) |  | 6 | 32 | 22 | 55
Income taxes (benefits) on other comprehensive income (loss) |  | 2 | 13 | 8 | 21
Other comprehensive income (loss), net of tax |  | 4 | 19 | 14 | 34
COMPREHENSIVE INCOME (LOSS) |  | 71 | 146 | 138 | 304
NG | Affiliates |  |  |  |  |
OPERATING EXPENSES: |  |  |  |  |
Purchased power |  | 38 | 49 | 76 | 106
OTHER INCOME (EXPENSE): |  |  |  |  |
Interest expense |  | (1) | 0 | (2) | (2)
NG | Non-Affiliates |  |  |  |  |
OPERATING EXPENSES: |  |  |  |  |
Purchased power |  | 0 | 0 | 0 | 0
OTHER INCOME (EXPENSE): |  |  |  |  |
Interest expense |  | (11) | (13) | (22) | (24)
Consolidated |  |  |  |  |
Consolidating Statements of Income |  |  |  |  |
Revenues |  | 741 | 1,102 | 1,655 | 2,301
OPERATING EXPENSES: |  |  |  |  |
Fuel |  | 154 | 228 | 298 | 393
Other operating expenses |  | 286 | 369 | 804 | 609
Provision for depreciation |  | 27 | 84 | 52 | 167
General taxes |  | 18 | 19 | 39 | 45
Impairment of assets |  | 0 | 540 | 0 | 540
Total operating expenses |  | 680 | 1,673 | 1,711 | 2,646
OPERATING INCOME (LOSS) |  | 61 | (571) | (56) | (345)
OTHER INCOME (EXPENSE): |  |  |  |  |
Investment income (loss), including net income (loss) from equity investees |  | 15 | 19 | 35 | 32
Miscellaneous income |  | 0 | 1 | 5 | 3
Capitalized interest |  | 6 | 8 | 14 | 18
Total other expense |  | (19) | (10) | (23) | (23)
INCOME (LOSS) BEFORE INCOME TAXES (BENEFITS) |  | 42 | (581) | (79) | (368)
INCOME TAXES (BENEFITS) |  | 23 | (143) | (18) | (61)
NET INCOME (LOSS) |  | 19 | (438) | (61) | (307)
NET INCOME |  | 19 | (438) | (61) | (307)
OTHER COMPREHENSIVE INCOME (LOSS): |  |  |  |  |
Pension and OPEB prior service costs |  | (4) | (3) | (7) | (7)
Amortized gains on derivative hedges |  | 0 | (1) | 0 | (1)
Change in unrealized gains on available-for-sale securities |  | 6 | 33 | 22 | 56
Other comprehensive income (loss) |  | 2 | 29 | 15 | 48
Income taxes (benefits) on other comprehensive income (loss) |  | 0 | 12 | 5 | 19
Other comprehensive income (loss), net of tax |  | 2 | 17 | 10 | 29
COMPREHENSIVE INCOME (LOSS) |  | 21 | (421) | (51) | (278)
Consolidated | Affiliates |  |  |  |  |
OPERATING EXPENSES: |  |  |  |  |
Purchased power |  | 39 | 167 | 202 | 249
OTHER INCOME (EXPENSE): |  |  |  |  |
Interest expense |  | (5) | (1) | (7) | (3)
Consolidated | Non-Affiliates |  |  |  |  |
OPERATING EXPENSES: |  |  |  |  |
Purchased power |  | 156 | 266 | 316 | 643
OTHER INCOME (EXPENSE): |  |  |  |  |
Interest expense |  | $ (35) | $ (37) | $ (70) | $ (73)
[1] | Includes excise tax collections of $91 million and $92 million in the three months ended June 30, 2017 and 2016, respectively, and $191 million and $199 million in the six months ended June 30, 2017 and 2016, respectively.

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