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Stockholders' Equity Reclassifications out of AOCI (Details) - USD ($) $ in Millions | 4 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Income Tax Expense (Benefit) |  |  | $ 524 | $ (81) | $ (46)
Income (loss) from continuing operations after income taxes |  |  | 1,822 | 756 | (270)
Derivative Instruments |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Income Tax Expense (Benefit) | [1] |  | 9 | (6) | (1)
Income (loss) from continuing operations after income taxes |  |  | (4) | 12 | 12
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax | [2] |  | (13) | 18 | 13
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax |  |  | (4) | 12 | 12
Gain (Loss) on Investments [Member] |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax | [3] | $ 0 | 7 | 0 |
Reclassification from AOCI, Current Period, Tax | [1] | $ 0 | 0 | 0 |
AOCI Attributable to Parent |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax |  |  | (602) | 18 | 16
Pension Plan |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax |  |  | 41 | 5 | 5
Pension Plan | Prior Service Benefit |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax | [3],[4] |  | (2) | (1) | (1)
Pension Plan | Actuarial Losses |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax | [3],[4],[5] |  | 55 | 4 | 2
Pension Plan | Accumulated Defined Benefit Plans Adjustment, Settlement Gain (Loss) [Member] |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax | [3],[4],[5] |  | 1 | 3 | 4
Pension Plan | Accumulated Defined Benefit Plans Adjustment Attributable to Parent |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax |  |  | 54 | 6 | 5
Reclassification from AOCI, Current Period, Tax | [1] |  | (13) | (1) | 0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax |  |  | 41 | 5 | 5
Other Benefit Plans |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax |  |  | (646) | 1 | (1)
Other Benefit Plans | Prior Service Benefit |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax | [3],[4] |  | (922) | 0 | 0
Other Benefit Plans | Actuarial Losses |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax | [3],[4] |  | 81 | 1 | (1)
Other Benefit Plans | Accumulated Defined Benefit Plans Adjustment Attributable to Parent |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax |  |  | (842) | 1 | (1)
Reclassification from AOCI, Current Period, Tax | [1] |  | 196 | 0 | 0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax |  |  | $ (646) | $ 1 | $ (1)
[1] | Reflected in provision for (benefit from) income taxes from continuing operations in the Consolidated Statements of Operations.
[2] | Reflected in cost of goods sold in the Consolidated Statements of Operations.
[3] | Reflected in other income - net in the Consolidated Statements of Operations.
[4] | These accumulated other comprehensive (loss) income components are included in the computation of net periodic benefit (credit) cost of the company's pension and other benefit plans. See Note 20 - Pension Plans and Other Post Employment Benefits, to the Consolidated Financial Statements, for additional information.
[5] | A portion reflected in (loss) income from discontinued operations after income taxes for the year ended December 31, 2019.

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