v3.22.0.1

Income Taxes​ - Change in Valuation Allowance (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Valuation Allowance, Deferred Tax Asset, Change [Roll Forward] |  |  |
Balance at beginning of year | $ 91 | $ 113 | $ 107
Establishment of new allowances | 0 | 22 | 0
Net change to existing allowances | (3) | (16) | 18
Release of allowances | 0 | 0 | (11)
Acquisitions and divestitures | 0 | (31) | 0
Foreign currency translation | (1) | 3 | (1)
Balance at end of year | 90 | 91 | 113
Valuation Allowance, Deferred Tax Asset, Establishment Of New Allowance | $ 3 | $ 0 | $ 0

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- Definition Valuation Allowance, Deferred Tax Asset, Change + References No definition available. + Details
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- Definition Valuation Allowance, Deferred Tax Asset, Decrease Due To Release Of Allowances + References No definition available. + Details
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- Definition Valuation Allowance, Deferred Tax Asset, Establishment Of New Allowance + References No definition available. + Details
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- Definition Valuation Allowance, Deferred Tax Asset, Increase (Decrease) For Acquisitions and Divestitures + References No definition available. + Details
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- Definition Valuation Allowance, Deferred Tax Asset, Increase (Decrease) Resulting From Foreign Currency Translation + References No definition available. + Details
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- Definition Valuation Allowance, Deferred Tax Asset, Increase Due To Separation Related Adjustments + References No definition available. + Details
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- Definition Valuation Allowance, Deferred Tax Asset, Net Change To Existing Allowances + References No definition available. + Details
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Namespace Prefix: | arnc_
Data Type: | xbrli:monetaryItemType
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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319 + Details
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