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Discontinued Operations and Disposal Groups Narrative (Details) $ in Millions, € in Billions |  | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | ---
Aug. 31, 2021 USD ($) | Aug. 31, 2021 EUR (€) | Sep. 30, 2021 USD ($) | Sep. 30, 2020 USD ($) | Sep. 30, 2021 USD ($) | Sep. 30, 2020 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |
Proceeds from sale of discontinued operations, net of cash disposed |  |  |  |  | $ 2,255 | $ 0 |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax |  |  | $ (2,592) | $ (3,329) | (2,592) | (3,329) | $ (3,193) | $ (3,131)
Income from continuing operations before taxes |  |  | 285 | 248 | 867 | 502 |  |
European Tinplate |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |
Income from continuing operations before taxes |  |  | 3 |  | 3 |  |  |
Accumulated Foreign Currency Adjustment Attributable to Parent |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax |  |  | $ (1,231) | $ (1,961) | $ (1,231) | $ (1,961) | $ (1,759) | $ (1,668)
European Tinplate |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |
Disposal Group Including Discontinued Operations Impairment Charge On Assets Held For Sale | $ 89 |  |  |  |  |  |  |
Income Tax Expense (Benefit) Related To Sale Of Business | 84 |  |  |  |  |  |  |
European Tinplate | Accumulated Foreign Currency Adjustment Attributable to Parent |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax | 553 |  |  |  |  |  |  |
European Tinplate | Discontinued Operations, Disposed of by Sale |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |
Proceeds from sale of discontinued operations, net of cash disposed | $ 2,300 | € 1.9 |  |  |  |  |  |
Equity method investment retained after disposal, percent | 20.00% | 20.00% |  |  |  |  |  |

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