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Accumulated Other Comprehensive Income - Amounts Reclassified (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Reclassification Out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |
Other operating expenses |  | $ (758) |  |  | $ (739) |  |  | $ (2,143) | $ (2,363)
Interest expense |  | (261) |  |  | (255) |  |  | (773) | (858)
Income taxes |  | (107) |  |  | (121) |  |  | (281) | (455)
Discontinued operations, net of tax | [1] | 2 |  |  | (857) |  |  | (62) | 322
NET INCOME (LOSS) |  | 391 | $ 312 | $ 320 | (458) | $ 299 | $ 1,369 | 1,023 | 1,210
Reclassifications from AOCI | Gains & losses on cash flow hedges |  |  |  |  |  |  |  |  |
Reclassification Out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |
Income taxes |  | 0 |  |  | 0 |  |  | 0 | (1)
NET INCOME (LOSS) |  | 0 |  |  | 2 |  |  | 1 | 5
Reclassifications from AOCI | Gains & losses on cash flow hedges | Commodity Contracts |  |  |  |  |  |  |  |  |
Reclassification Out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |
Other operating expenses |  | 0 |  |  | 0 |  |  | 0 | 1
Reclassifications from AOCI | Gains & losses on cash flow hedges | Long-term debt |  |  |  |  |  |  |  |  |
Reclassification Out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |
Interest expense |  | 0 |  |  | 2 |  |  | 1 | 5
Reclassifications from AOCI | Unrealized gains on AFS securities |  |  |  |  |  |  |  |  |
Reclassification Out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |
Discontinued operations, net of tax |  | 0 |  |  | 0 |  |  | 0 | (1)
Reclassifications from AOCI | Net prior service costs |  |  |  |  |  |  |  |  |
Reclassification Out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |  |  |
Other operating expenses |  | (7) |  |  | (15) |  |  | (21) | (55)
Income taxes |  | 3 |  |  | 5 |  |  | 6 | 14
NET INCOME (LOSS) |  | $ (4) |  |  | $ (10) |  |  | $ (15) | $ (41)
[1] | Net of income tax expense (benefits) of $2 million and $(342) million for the three months ended September 30, 2019 and 2018, respectively, and $46 million and $(1.2) billion for the nine months ended September 30, 2019 and 2018, respectively.

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