XML 81 R50.htm IDEA: XBRL DOCUMENT
v3.19.3

Restructuring and Other Charges - Narrative (Details) $ in Millions |  | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Oct. 18, 2019 USD ($) | Sep. 30, 2019 USD ($) position | Sep. 30, 2018 USD ($) position | Sep. 30, 2019 USD ($) position | Sep. 30, 2018 USD ($) position | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring and other charges (benefits) |  | $ 119 | $ (2) | $ 630 | $ 20 |  |  |
Restructuring and other charges (benefits) after tax |  | 114 | (3) | 521 | 14 |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax |  | 3,557 | 3,522 | 10,787 | 10,551 |  |  |
Cash payments for restructuring |  |  |  | 65 |  |  |  | $ 49
Asset Impairment associated with the sale of business |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring and other charges (benefits) |  | 102 |  |  |  |  |  |
Restructuring and other charges (benefits) after tax |  | 102 |  |  |  |  |  |
Sale Of Company's Brazilian Rolling Mill Operations |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring and other charges (benefits) |  | 59 |  |  |  |  |  |
UK Forgings |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring and other charges (benefits) |  | 43 |  |  |  |  |  |
Impairment Of Property, Plant, And Equipment |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring and other charges (benefits) |  | 8 |  |  |  |  |  |
Restructuring and other charges (benefits) after tax |  | 6 |  |  |  |  |  |
Pension Settlement Cost |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring and other charges (benefits) |  | 4 | 4 | 8 | 4 |  |  |
Restructuring and other charges (benefits) after tax |  | 3 | 3 | 6 | 3 |  |  |
Restructuring, Accelerated Depreciation |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring and other charges (benefits) |  | 4 |  | 6 |  |  |  |
Restructuring and other charges (benefits) after tax |  | 3 |  | 5 |  |  |  |
Restructuring Programs Layoffs |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring and other charges (benefits) |  | 2 | 8 | 97 | 16 |  |  |
Restructuring and other charges (benefits) after tax |  | $ 1 | $ 6 | $ 74 | $ 12 |  |  |
Number of employees associated with layoff costs | position |  | 56 | 85 | 1,183 | 125 |  |  |
Layoff costs |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring and other charges (benefits) |  | $ (1) | $ (1) | $ (4) |  |  |  |
Restructuring and other charges (benefits) after tax |  | $ (1) | (1) | (4) |  |  |  |
Cash payments for restructuring |  |  |  | 61 |  |  |  | 47
Impairment Of Disks |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring and other charges (benefits) |  |  |  | 428 |  |  |  |
Restructuring and other charges (benefits) after tax |  |  |  | 345 |  |  |  |
Impairment for a trade name intangible asset and fixed assets |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring and other charges (benefits) |  |  |  | 24 |  |  |  |
Restructuring and other charges (benefits) after tax |  |  |  | 18 |  |  |  |
Other exit costs |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring and other charges (benefits) |  |  |  | 12 |  |  |  |
Restructuring and other charges (benefits) after tax |  |  |  | 9 |  |  |  |
Cash payments for restructuring |  |  |  | 4 |  |  |  | $ 2
Loss On Sale Related To Small Additive Business |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring and other charges (benefits) |  |  |  | 12 |  |  |  |
Restructuring and other charges (benefits) after tax |  |  |  | 9 |  |  |  |
Executive Severance Net Of The Benefit Of Forfeited Executive Stock Compensation |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring and other charges (benefits) |  |  |  | 2 |  |  |  |
Restructuring and other charges (benefits) after tax |  |  |  | 1 |  |  |  |
Other Miscellaneous Charges |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring and other charges (benefits) |  |  | 3 | 1 | $ 7 |  |  |
Restructuring and other charges (benefits) after tax |  |  | 2 |  | 5 |  |  |
Elimination Of Life Insurance Benefits |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring and other charges (benefits) |  |  |  | (58) |  |  |  |
Restructuring and other charges (benefits) after tax |  |  |  | $ (45) |  |  |  |
Postretirement Curtailment Benefit |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring and other charges (benefits) |  |  | 28 |  | 28 |  |  |
Restructuring and other charges (benefits) after tax |  |  | $ (22) |  | 22 |  |  |
Contract Termination Cost and Asset Impairments |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring and other charges (benefits) |  |  |  |  | 12 |  |  |
Restructuring and other charges (benefits) after tax |  |  |  |  | 9 |  |  |
Pension Curtailment Charge |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring and other charges (benefits) |  |  |  |  | 14 |  |  |
Restructuring and other charges (benefits) after tax |  |  |  |  | 11 |  |  |
New York |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring and other charges (benefits) |  |  |  |  | 5 |  |  |
Restructuring and other charges (benefits) after tax |  |  |  |  | 4 |  |  |
Other Adjustments |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring and other charges (benefits) |  |  |  |  | 10 |  |  |
Restructuring and other charges (benefits) after tax |  |  |  |  | $ 8 |  |  |
Restructuring Programs Layoffs 2019 |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Number of employees associated with layoff costs | position |  |  |  | 1,183 |  |  |  |
Approximate number of employees already laid off | position |  | 745 |  | 745 |  |  |  |
Cash payments for restructuring |  | $ 21 |  | $ 61 |  |  |  |
Corporate Segment | Restructuring Programs Layoffs |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Number of employees associated with layoff costs | position |  |  | 20 | 463 | 36 |  |  |
Engineered Products and Forgings |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax |  | 1,794 | $ 1,683 | $ 5,372 | $ 5,083 |  |  |
Engineered Products and Forgings | Restructuring Programs Layoffs |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Number of employees associated with layoff costs | position |  |  | 65 | 350 | 89 |  |  |
Global Rolled Products |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax |  | $ 1,763 | $ 1,839 | $ 5,415 | $ 5,468 |  |  |
Global Rolled Products | Restructuring Programs Layoffs |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Number of employees associated with layoff costs | position |  |  |  | 370 |  |  |  |
Subsequent Event | GRP Operations Curtailment Benefit |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Restructuring and other charges (benefits) | $ 4 |  |  |  |  |  |  |
Scenario, Forecast | Layoff costs |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Cash payments for restructuring |  |  |  |  |  | $ 15 |  |
Scenario, Forecast | GRP Operations Curtailment Benefit |  |  |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |
Revenue from Contract with Customer, Excluding Assessed Tax |  |  |  |  |  |  | $ 50 |

X
- Definition Restructuring and other charges after tax. + References No definition available. + Details
Name: | arnc_RestructuringAndOtherChargesAfterTax
Namespace Prefix: | arnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 17 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3367-108585 + Details
Name: | us-gaap_PaymentsForRestructuring
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The number of positions eliminated during the period as a result of restructuring activities. + References No definition available. + Details
Name: | us-gaap_RestructuringAndRelatedCostNumberOfPositionsEliminated
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of positions eliminated as of the balance sheet date since inception of the restructuring plan(s). + References No definition available. + Details
Name: | us-gaap_RestructuringAndRelatedCostNumberOfPositionsEliminatedInceptionToDate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.P.3) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140864-122747 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 + Details
Name: | us-gaap_RestructuringCharges
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_RestructuringCostAndReserveLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
Name: | us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=arnc_AssetImpairmentAssociatedWithTheSaleOfBusinessMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=arnc_SaleOfCompanysBrazilianRollingMillOperationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=arnc_UKForgingsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=arnc_ImpairmentOfPropertyPlantAndEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=arnc_PensionSettlementCostMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=arnc_RestructuringAcceleratedDepreciationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=arnc_RestructuringProgramsLayoffsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=us-gaap_EmployeeSeveranceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=arnc_ImpairmentOfDisksMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=arnc_ImpairmentForTradeNameIntangibleAssetAndFixedAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=arnc_OtherExitCostsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=arnc_OtherExitCostsOtherLossOnSaleRelatedToSmallAdditiveBusinessMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=arnc_ExecutiveSeveranceNetOfTheBenefitOfForfeitedExecutiveStockCompensationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=arnc_OtherMiscellaneousChargesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=arnc_EliminationOfLifeInsuranceBenefitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=arnc_PostretirementCurtailmentBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=arnc_ContractTerminationCostandAssetImpairmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=arnc_PensionCurtailmentChargeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=arnc_RestructuringRelatedToNewYorkOfficeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=arnc_OtherAdjustmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=arnc_RestructuringProgramsLayoffsTwoThousandNineteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=us-gaap_CorporateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=arnc_EngineeredProductsAndSolutionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=arnc_GlobalRolledProductsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=arnc_GRPOperationsCurtailmentBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |