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Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
AOCI Beginning Balance | $ 73 | $ 163 | $ 142 | $ 174
Other comprehensive income before reclassifications |  | 27 | (97) | 63
Amounts reclassified from AOCI | (16) | (48) | (50) | (102)
Deconsolidation of FES and FENOC |  |  | 5 |
Other comprehensive loss | (16) | (21) | (142) | (39)
Income taxes (benefits) on other comprehensive income (loss) | (4) | (9) | (61) | (16)
Other comprehensive loss, net of tax | (12) | (12) | (81) | (23)
AOCI Ending Balance | 61 | 151 | 61 | 151
Gains & Losses on Cash Flow Hedges |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
AOCI Beginning Balance | (14) | (26) | (22) | (28)
Other comprehensive income before reclassifications |  | 0 | 0 | 0
Amounts reclassified from AOCI | 2 | 4 | 6 | 8
Deconsolidation of FES and FENOC |  |  | 13 |
Other comprehensive loss | 2 | 4 | 19 | 8
Income taxes (benefits) on other comprehensive income (loss) | 0 | 1 | 9 | 3
Other comprehensive loss, net of tax | 2 | 3 | 10 | 5
AOCI Ending Balance | (12) | (23) | (12) | (23)
Unrealized Gains on AFS Securities |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
AOCI Beginning Balance | 0 | 61 | 67 | 52
Other comprehensive income before reclassifications |  | 27 | (97) | 63
Amounts reclassified from AOCI | 0 | (33) | (1) | (55)
Deconsolidation of FES and FENOC |  |  | (8) |
Other comprehensive loss | 0 | (6) | (106) | 8
Income taxes (benefits) on other comprehensive income (loss) | 0 | (3) | (39) | 2
Other comprehensive loss, net of tax | 0 | (3) | (67) | 6
AOCI Ending Balance | 0 | 58 | 0 | 58
Defined Benefit Pension & OPEB Plans |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
AOCI Beginning Balance | 87 | 128 | 97 | 150
Other comprehensive income before reclassifications |  | 0 | 0 | 0
Amounts reclassified from AOCI | (18) | (19) | (55) | (55)
Deconsolidation of FES and FENOC |  |  | 0 |
Other comprehensive loss | (18) | (19) | (55) | (55)
Income taxes (benefits) on other comprehensive income (loss) | (4) | (7) | (31) | (21)
Other comprehensive loss, net of tax | (14) | (12) | (24) | (34)
AOCI Ending Balance | $ 73 | $ 116 | $ 73 | $ 116

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- Definition The amount of the reduction or elimination during the period of a noncontrolling interest resulting from the parent's loss of control and deconsolidation of the entity in which one or more outside parties had a noncontrolling interest. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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