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Separation Transaction and Discontinued Operations - Summary of Discontinued Operations in Statement of Consolidated Operations (Detail) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2016 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |
Loss from discontinued operations after income taxes | $ (99)
Less: Net loss from discontinued operations attributable to noncontrolling interests | (5)
Net loss from discontinued operations | (94)
Alcoa Corporation [Member] |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |
Sales | 1,892
Cost of goods sold (exclusive of expenses below) | 1,641
Selling, general administrative, and other expenses | 55
Research and development expenses | 11
Provision for depreciation, depletion and amortization | 175
Restructuring and other charges | 77
Interest expense | 6
Other expenses, net | 47
Loss from discontinued operations before income taxes | (120)
Benefit for income taxes | (21)
Loss from discontinued operations after income taxes | (99)
Less: Net loss from discontinued operations attributable to noncontrolling interests | (5)
Net loss from discontinued operations | $ (94)

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