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Arconic Inc Separation Transaction and Discontinued Operations - Summary of Results of Discontinued Operations (Details) - Arconic Corportion - Discontinued Operations, Disposed of by Means Other than Sale $ in Millions | 12 Months Ended
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Dec. 31, 2020 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |
Sales | $ 1,575
Cost of goods sold | 1,293
Selling, general administrative, research and development and other expenses | 106
Provision for depreciation and amortization | 58
Restructuring and other credits | (18)
Operating income from discontinued operations | 136
Interest expense, net | 7
Other expense, net | 41
Income from discontinued operations | 88
Provision for income taxes | 38
Income from discontinued operations after income taxes | $ 50

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