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Arconic Inc. Separation Transaction and Discontinued Operations - Summary of Results of Discontinued Operations (Details) - Discontinued Operations, Disposed of by Means Other than Sale - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2020
Restructuring Cost and Reserve [Line Items] |  |
Sales | $ 0 | $ 1,575
Cost of goods sold | 0 | 1,293
Selling, general administrative, research and development and other expenses | 5 | 106
Provision for depreciation and amortization | 0 | 58
Restructuring and other charges | 0 | (18)
Operating (loss) income from discontinued operations | (5) | 136
Interest expense | 0 | 7
Other expense, net | 0 | 41
(Loss) income from discontinued operations | (5) | 88
Provision for income taxes | 7 | 38
(Loss) income from discontinued operations after income taxes | $ (12) | $ 50

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