10-Q Filing

ALCOA CORP CIK: 1675149 Q3 2019

Filing Information

Form Type	10-Q
Accession Number	`0001564590-19-039149`
Period End Date	20190930
Filing Date	20191031
Fiscal Year	2019
Fiscal Period	Q3
XBRL Instance	aa-10q_20190930_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 84 Income Statement 64 Cash Flow Statement 75 Stockholders Equity 39 Comprehensive Income 72

Balance Sheet 84 line items

Line Item	Tag	Value	Unit	Period
Cash and cash equivalents (J)	`CashAndCashEquivalentsAtCarryingValue`	$841.00M	USD	Point-in-time
Cash and cash equivalents (J)	`CashAndCashEquivalentsAtCarryingValue`	$1.11B	USD	Point-in-time
Receivables from customers	`AccountsReceivableNetCurrent`	$830.00M	USD	Point-in-time
Receivables from customers	`AccountsReceivableNetCurrent`	$596.00M	USD	Point-in-time
Other receivables	`OtherReceivablesNetCurrent`	$228.00M	USD	Point-in-time
Other receivables	`OtherReceivablesNetCurrent`	$173.00M	USD	Point-in-time
Inventories (H)	`InventoryNet`	$1.65B	USD	Point-in-time
Inventories (H)	`InventoryNet`	$1.82B	USD	Point-in-time
Fair value of derivative instruments (J)	`DerivativeAssetsCurrent`	$73.00M	USD	Point-in-time
Fair value of derivative instruments (J)	`DerivativeAssetsCurrent`	$84.00M	USD	Point-in-time
Prepaid expenses and other current assets (H)	`PrepaidExpenseAndOtherAssetsCurrent`	$245.00M	USD	Point-in-time
Prepaid expenses and other current assets (H)	`PrepaidExpenseAndOtherAssetsCurrent`	$320.00M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$3.64B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$4.33B	USD	Point-in-time
Properties, plants, and equipment	`PropertyPlantAndEquipmentGross`	$21.46B	USD	Point-in-time
Properties, plants, and equipment	`PropertyPlantAndEquipmentGross`	$21.81B	USD	Point-in-time
Less: accumulated depreciation, depletion, and amortization	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$13.53B	USD	Point-in-time
Less: accumulated depreciation, depletion, and amortization	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$13.48B	USD	Point-in-time
Properties, plants, and equipment, net	`PropertyPlantAndEquipmentNet`	$7.93B	USD	Point-in-time
Properties, plants, and equipment, net	`PropertyPlantAndEquipmentNet`	$8.33B	USD	Point-in-time
Investments (G & M)	`InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures`	$1.36B	USD	Point-in-time
Investments (G & M)	`InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures`	$1.11B	USD	Point-in-time
Deferred income taxes	`DeferredTaxAssetsNetNoncurrent`	$560.00M	USD	Point-in-time
Deferred income taxes	`DeferredTaxAssetsNetNoncurrent`	$560.00M	USD	Point-in-time
Fair value of derivative instruments (J)	`DerivativeAssetsNoncurrent`	$47.00M	USD	Point-in-time
Fair value of derivative instruments (J)	`DerivativeAssetsNoncurrent`	$82.00M	USD	Point-in-time
Other noncurrent assets	`OtherAssetsNoncurrent`	$1.38B	USD	Point-in-time
Other noncurrent assets	`OtherAssetsNoncurrent`	$1.48B	USD	Point-in-time
Total assets	`Assets`	$16.13B	USD	Point-in-time
Total assets	`Assets`	$14.67B	USD	Point-in-time
Accounts payable, trade	`AccountsPayableCurrent`	$1.42B	USD	Point-in-time
Accounts payable, trade	`AccountsPayableCurrent`	$1.66B	USD	Point-in-time
Accrued compensation and retirement costs	`EmployeeRelatedLiabilitiesCurrent`	$400.00M	USD	Point-in-time
Accrued compensation and retirement costs	`EmployeeRelatedLiabilitiesCurrent`	$404.00M	USD	Point-in-time
Taxes, including income taxes	`TaxesPayableCurrent`	$426.00M	USD	Point-in-time
Taxes, including income taxes	`TaxesPayableCurrent`	$81.00M	USD	Point-in-time
Fair value of derivative instruments (J)	`DerivativeLiabilitiesCurrent`	$82.00M	USD	Point-in-time
Fair value of derivative instruments (J)	`DerivativeLiabilitiesCurrent`	$67.00M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$484.00M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$347.00M	USD	Point-in-time
Long-term debt due within one year (J)	`LongTermDebtAndCapitalLeaseObligationsCurrent`	$1.00M	USD	Point-in-time
Long-term debt due within one year (J)	`LongTermDebtAndCapitalLeaseObligationsCurrent`	$1.00M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$2.92B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$2.46B	USD	Point-in-time
Long-term debt, less amount due within one year (J)	`LongTermDebtAndCapitalLeaseObligations`	$1.80B	USD	Point-in-time
Long-term debt, less amount due within one year (J)	`LongTermDebtAndCapitalLeaseObligations`	$1.80B	USD	Point-in-time
Accrued pension benefits (I)	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$1.39B	USD	Point-in-time
Accrued pension benefits (I)	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$1.41B	USD	Point-in-time
Accrued other postretirement benefits (I)	`OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent`	$820.00M	USD	Point-in-time
Accrued other postretirement benefits (I)	`OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent`	$868.00M	USD	Point-in-time
Asset retirement obligations	`AssetRetirementObligationsNoncurrent`	$529.00M	USD	Point-in-time
Asset retirement obligations	`AssetRetirementObligationsNoncurrent`	$491.00M	USD	Point-in-time
Environmental remediation (M)	`AccruedEnvironmentalLossContingenciesNoncurrent`	$238.00M	USD	Point-in-time
Environmental remediation (M)	`AccruedEnvironmentalLossContingenciesNoncurrent`	$236.00M	USD	Point-in-time
Fair value of derivative instruments (J)	`DerivativeLiabilitiesNoncurrent`	$261.00M	USD	Point-in-time
Fair value of derivative instruments (J)	`DerivativeLiabilitiesNoncurrent`	$425.00M	USD	Point-in-time
Noncurrent income taxes	`AccruedIncomeTaxesNoncurrent`	$301.00M	USD	Point-in-time
Noncurrent income taxes	`AccruedIncomeTaxesNoncurrent`	$299.00M	USD	Point-in-time
Other noncurrent liabilities and deferred credits	`DeferredCreditsAndOtherLiabilitiesNoncurrent`	$338.00M	USD	Point-in-time
Other noncurrent liabilities and deferred credits	`DeferredCreditsAndOtherLiabilitiesNoncurrent`	$222.00M	USD	Point-in-time
Total liabilities	`Liabilities`	$8.54B	USD	Point-in-time
Total liabilities	`Liabilities`	$8.26B	USD	Point-in-time
CONTINGENCIES AND COMMITMENTS (M)	`CommitmentsAndContingencies`	-	USD	Point-in-time
CONTINGENCIES AND COMMITMENTS (M)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Common stock	`CommonStockValue`	$2.00M	USD	Point-in-time
Common stock	`CommonStockValue`	$2.00M	USD	Point-in-time
Additional capital	`AdditionalPaidInCapitalCommonStock`	$9.64B	USD	Point-in-time
Additional capital	`AdditionalPaidInCapitalCommonStock`	$9.61B	USD	Point-in-time
Retained (deficit) earnings (H)	`RetainedEarningsAccumulatedDeficit`	$570.00M	USD	Point-in-time
Retained (deficit) earnings (H)	`RetainedEarningsAccumulatedDeficit`	$-252.00M	USD	Point-in-time
Accumulated other comprehensive loss (F)	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-4.85B	USD	Point-in-time
Accumulated other comprehensive loss (F)	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-4.57B	USD	Point-in-time
Total Alcoa Corporation shareholders equity	`StockholdersEquity`	$4.54B	USD	Point-in-time
Total Alcoa Corporation shareholders equity	`StockholdersEquity`	$5.62B	USD	Point-in-time
Noncontrolling interest (H)	`MinorityInterest`	$1.87B	USD	Point-in-time
Noncontrolling interest (H)	`MinorityInterest`	$1.97B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$7.59B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.41B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.86B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$7.25B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$7.46B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.97B	USD	Point-in-time
Total liabilities and equity	`LiabilitiesAndStockholdersEquity`	$16.13B	USD	Point-in-time
Total liabilities and equity	`LiabilitiesAndStockholdersEquity`	$14.67B	USD	Point-in-time

Income Statement 64 line items

Line Item	Tag	Value	Unit	Period
Sales (D)	`RevenueFromContractWithCustomerExcludingAssessedTax`	$2.57B	USD	1 Quarter
Sales (D)	`RevenueFromContractWithCustomerExcludingAssessedTax`	$8.00B	USD	3 Qtrs
Sales (D)	`RevenueFromContractWithCustomerExcludingAssessedTax`	$10.06B	USD	3 Qtrs
Sales (D)	`RevenueFromContractWithCustomerExcludingAssessedTax`	$3.39B	USD	1 Quarter
Cost of goods sold (exclusive of expenses below) (H)	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$2.48B	USD	1 Quarter
Cost of goods sold (exclusive of expenses below) (H)	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$7.54B	USD	3 Qtrs
Cost of goods sold (exclusive of expenses below) (H)	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$6.49B	USD	3 Qtrs
Cost of goods sold (exclusive of expenses below) (H)	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$2.12B	USD	1 Quarter
Selling, general administrative, and other expenses	`SellingGeneralAndAdministrativeExpense`	$189.00M	USD	3 Qtrs
Selling, general administrative, and other expenses	`SellingGeneralAndAdministrativeExpense`	$66.00M	USD	1 Quarter
Selling, general administrative, and other expenses	`SellingGeneralAndAdministrativeExpense`	$58.00M	USD	1 Quarter
Selling, general administrative, and other expenses	`SellingGeneralAndAdministrativeExpense`	$218.00M	USD	3 Qtrs
Research and development expenses	`ResearchAndDevelopmentExpense`	$7.00M	USD	1 Quarter
Research and development expenses	`ResearchAndDevelopmentExpense`	$7.00M	USD	1 Quarter
Research and development expenses	`ResearchAndDevelopmentExpense`	$21.00M	USD	3 Qtrs
Research and development expenses	`ResearchAndDevelopmentExpense`	$24.00M	USD	3 Qtrs
Provision for depreciation, depletion, and amortization	`DepreciationDepletionAndAmortization`	$559.00M	USD	3 Qtrs
Provision for depreciation, depletion, and amortization	`DepreciationDepletionAndAmortization`	$184.00M	USD	1 Quarter
Provision for depreciation, depletion, and amortization	`DepreciationDepletionAndAmortization`	$530.00M	USD	3 Qtrs
Provision for depreciation, depletion, and amortization	`DepreciationDepletionAndAmortization`	$173.00M	USD	1 Quarter
Restructuring and other charges, net (C)	`RestructuringAndOtherCharges`	$389.00M	USD	3 Qtrs
Restructuring and other charges, net (C)	`RestructuringAndOtherCharges`	$185.00M	USD	1 Quarter
Restructuring and other charges, net (C)	`RestructuringAndOtherCharges`	$668.00M	USD	3 Qtrs
Restructuring and other charges, net (C)	`RestructuringAndOtherCharges`	$177.00M	USD	1 Quarter
Interest expense	`InterestExpense`	$33.00M	USD	1 Quarter
Interest expense	`InterestExpense`	$91.00M	USD	3 Qtrs
Interest expense	`InterestExpense`	$30.00M	USD	1 Quarter
Interest expense	`InterestExpense`	$90.00M	USD	3 Qtrs
Other expenses, net (N)	`NonoperatingIncomeExpense`	$-27.00M	USD	1 Quarter
Other expenses, net (N)	`NonoperatingIncomeExpense`	$-2.00M	USD	1 Quarter
Other expenses, net (N)	`NonoperatingIncomeExpense`	$-32.00M	USD	3 Qtrs
Other expenses, net (N)	`NonoperatingIncomeExpense`	$-118.00M	USD	3 Qtrs
Total costs and expenses	`CostsAndOperatingExpensesAndNonoperatingIncomeExpenses`	$2.94B	USD	1 Quarter
Total costs and expenses	`CostsAndOperatingExpensesAndNonoperatingIncomeExpenses`	$8.13B	USD	3 Qtrs
Total costs and expenses	`CostsAndOperatingExpensesAndNonoperatingIncomeExpenses`	$2.62B	USD	1 Quarter
Total costs and expenses	`CostsAndOperatingExpensesAndNonoperatingIncomeExpenses`	$8.82B	USD	3 Qtrs
(Loss) income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$1.24B	USD	3 Qtrs
(Loss) income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$455.00M	USD	1 Quarter
(Loss) income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$-137.00M	USD	3 Qtrs
(Loss) income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$-52.00M	USD	1 Quarter
Provision for income taxes	`IncomeTaxExpenseBenefit`	$260.00M	USD	1 Quarter
Provision for income taxes	`IncomeTaxExpenseBenefit`	$95.00M	USD	1 Quarter
Provision for income taxes	`IncomeTaxExpenseBenefit`	$361.00M	USD	3 Qtrs
Provision for income taxes	`IncomeTaxExpenseBenefit`	$569.00M	USD	3 Qtrs
Net (loss) income	`ProfitLoss`	$195.00M	USD	1 Quarter
Net (loss) income	`ProfitLoss`	$-498.00M	USD	3 Qtrs
Net (loss) income	`ProfitLoss`	$-147.00M	USD	1 Quarter
Net (loss) income	`ProfitLoss`	$666.00M	USD	3 Qtrs
Less: Net income attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$201.00M	USD	1 Quarter
Less: Net income attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$467.00M	USD	3 Qtrs
Less: Net income attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$324.00M	USD	3 Qtrs
Less: Net income attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$74.00M	USD	1 Quarter
NET (LOSS) INCOME ATTRIBUTABLE TO ALCOA CORPORATION	`NetIncomeLoss`	$-221.00M	USD	1 Quarter
NET (LOSS) INCOME ATTRIBUTABLE TO ALCOA CORPORATION	`NetIncomeLoss`	$-822.00M	USD	3 Qtrs
NET (LOSS) INCOME ATTRIBUTABLE TO ALCOA CORPORATION	`NetIncomeLoss`	$199.00M	USD	3 Qtrs
NET (LOSS) INCOME ATTRIBUTABLE TO ALCOA CORPORATION	`NetIncomeLoss`	$-6.00M	USD	1 Quarter
Basic	`EarningsPerShareBasic`	$-4.43	USD	3 Qtrs
Basic	`EarningsPerShareBasic`	$1.07	USD	3 Qtrs
Basic	`EarningsPerShareBasic`	$-0.03	USD	1 Quarter
Basic	`EarningsPerShareBasic`	$-1.19	USD	1 Quarter
Diluted	`EarningsPerShareDiluted`	$1.06	USD	3 Qtrs
Diluted	`EarningsPerShareDiluted`	$-1.19	USD	1 Quarter
Diluted	`EarningsPerShareDiluted`	$-4.43	USD	3 Qtrs
Diluted	`EarningsPerShareDiluted`	$-0.03	USD	1 Quarter

Cash Flow Statement 75 line items

Line Item	Tag	Value	Unit	Period
Net (loss) income (H)	`ProfitLoss`	$195.00M	USD	1 Quarter
Net (loss) income (H)	`ProfitLoss`	$-498.00M	USD	3 Qtrs
Net (loss) income (H)	`ProfitLoss`	$-147.00M	USD	1 Quarter
Net (loss) income (H)	`ProfitLoss`	$666.00M	USD	3 Qtrs
Depreciation, depletion, and amortization	`OtherDepreciationAndAmortization`	$530.00M	USD	3 Qtrs
Depreciation, depletion, and amortization	`OtherDepreciationAndAmortization`	$559.00M	USD	3 Qtrs
Deferred income taxes (H)	`DeferredIncomeTaxExpenseBenefit`	$-16.00M	USD	3 Qtrs
Deferred income taxes (H)	`DeferredIncomeTaxExpenseBenefit`	$59.00M	USD	3 Qtrs
Equity earnings, net of dividends	`IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions`	$11.00M	USD	3 Qtrs
Equity earnings, net of dividends	`IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions`	$-12.00M	USD	3 Qtrs
Restructuring and other charges, net (C)	`RestructuringAndOtherCharges`	$389.00M	USD	3 Qtrs
Restructuring and other charges, net (C)	`RestructuringAndOtherCharges`	$185.00M	USD	1 Quarter
Restructuring and other charges, net (C)	`RestructuringAndOtherCharges`	$668.00M	USD	3 Qtrs
Restructuring and other charges, net (C)	`RestructuringAndOtherCharges`	$177.00M	USD	1 Quarter
Net gain from investing activities asset sales (N)	`GainLossOnDispositionOfAssets1`	$6.00M	USD	3 Qtrs
Net gain from investing activities asset sales (N)	`GainLossOnDispositionOfAssets1`	$5.00M	USD	1 Quarter
Net gain from investing activities asset sales (N)	`GainLossOnDispositionOfAssets1`	$-3.00M	USD	1 Quarter
Net periodic pension benefit cost (I)	`DefinedBenefitPensionPlansNetPeriodicBenefitCost`	$115.00M	USD	3 Qtrs
Net periodic pension benefit cost (I)	`DefinedBenefitPensionPlansNetPeriodicBenefitCost`	$90.00M	USD	3 Qtrs
Stock-based compensation	`ShareBasedCompensation`	$29.00M	USD	3 Qtrs
Stock-based compensation	`ShareBasedCompensation`	$29.00M	USD	3 Qtrs
Provision for bad debt expense	`ProvisionForDoubtfulAccounts`	$21.00M	USD	3 Qtrs
Other	`OtherNoncashIncomeExpense`	$-19.00M	USD	3 Qtrs
Other	`OtherNoncashIncomeExpense`	$64.00M	USD	3 Qtrs
Decrease (Increase) in receivables	`IncreaseDecreaseInReceivables`	$-127.00M	USD	3 Qtrs
Decrease (Increase) in receivables	`IncreaseDecreaseInReceivables`	$209.00M	USD	3 Qtrs
Decrease (Increase) in inventories (H)	`IncreaseDecreaseInInventories`	$-111.00M	USD	3 Qtrs
Decrease (Increase) in inventories (H)	`IncreaseDecreaseInInventories`	$286.00M	USD	3 Qtrs
Decrease in prepaid expenses and other current assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$-70.00M	USD	3 Qtrs
Decrease in prepaid expenses and other current assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$-3.00M	USD	3 Qtrs
(Decrease) in accounts payable, trade	`IncreaseDecreaseInAccountsPayableTrade`	$-135.00M	USD	3 Qtrs
(Decrease) in accounts payable, trade	`IncreaseDecreaseInAccountsPayableTrade`	$-199.00M	USD	3 Qtrs
(Decrease) in accrued expenses	`IncreaseDecreaseInAccruedLiabilities`	$-288.00M	USD	3 Qtrs
(Decrease) in accrued expenses	`IncreaseDecreaseInAccruedLiabilities`	$-147.00M	USD	3 Qtrs
(Decrease) Increase in taxes, including income taxes	`IncreaseDecreaseInAccruedTaxesPayable`	$-344.00M	USD	3 Qtrs
(Decrease) Increase in taxes, including income taxes	`IncreaseDecreaseInAccruedTaxesPayable`	$248.00M	USD	3 Qtrs
Pension contributions (I)	`PensionContributions`	$67.00M	USD	3 Qtrs
Pension contributions (I)	`PensionContributions`	$940.00M	USD	3 Qtrs
(Increase) in noncurrent assets	`IncreaseDecreaseInOtherNoncurrentAssets`	$89.00M	USD	3 Qtrs
(Increase) in noncurrent assets	`IncreaseDecreaseInOtherNoncurrentAssets`	$24.00M	USD	3 Qtrs
(Decrease) in noncurrent liabilities	`IncreaseDecreaseInOtherNoncurrentLiabilities`	$-27.00M	USD	3 Qtrs
(Decrease) in noncurrent liabilities	`IncreaseDecreaseInOtherNoncurrentLiabilities`	$-58.00M	USD	3 Qtrs
CASH PROVIDED FROM (USED FOR) OPERATIONS	`NetCashProvidedByUsedInOperatingActivities`	$424.00M	USD	3 Qtrs
CASH PROVIDED FROM (USED FOR) OPERATIONS	`NetCashProvidedByUsedInOperatingActivities`	$-87.00M	USD	3 Qtrs
Additions to debt (original maturities greater than three months)	`ProceedsFromIssuanceOfLongTermDebt`	$553.00M	USD	3 Qtrs
Payments on debt (original maturities greater than three months)	`RepaymentsOfLongTermDebt`	$105.00M	USD	3 Qtrs
Proceeds from the exercise of employee stock options	`ProceedsFromStockOptionsExercised`	$2.00M	USD	3 Qtrs
Proceeds from the exercise of employee stock options	`ProceedsFromStockOptionsExercised`	$23.00M	USD	3 Qtrs
Contributions from noncontrolling interest	`ProceedsFromMinorityShareholders`	$41.00M	USD	3 Qtrs
Contributions from noncontrolling interest	`ProceedsFromMinorityShareholders`	$109.00M	USD	3 Qtrs
Distributions to noncontrolling interest	`PaymentsOfDividendsMinorityInterest`	$566.00M	USD	3 Qtrs
Distributions to noncontrolling interest	`PaymentsOfDividendsMinorityInterest`	$388.00M	USD	3 Qtrs
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-8.00M	USD	3 Qtrs
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-6.00M	USD	3 Qtrs
CASH (USED FOR) PROVIDED FROM FINANCING ACTIVITIES	`NetCashProvidedByUsedInFinancingActivities`	$6.00M	USD	3 Qtrs
CASH (USED FOR) PROVIDED FROM FINANCING ACTIVITIES	`NetCashProvidedByUsedInFinancingActivities`	$-351.00M	USD	3 Qtrs
Capital expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$251.00M	USD	3 Qtrs
Capital expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$245.00M	USD	3 Qtrs
Proceeds from the sale of assets	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$23.00M	USD	3 Qtrs
Additions to investments	`PaymentsToAcquireInvestments`	$112.00M	USD	3 Qtrs
Additions to investments	`PaymentsToAcquireInvestments`	$6.00M	USD	3 Qtrs
CASH USED FOR INVESTING ACTIVITIES	`NetCashProvidedByUsedInInvestingActivities`	$-257.00M	USD	3 Qtrs
CASH USED FOR INVESTING ACTIVITIES	`NetCashProvidedByUsedInInvestingActivities`	$-334.00M	USD	3 Qtrs
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS AND RESTRICTED CASH	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-11.00M	USD	3 Qtrs
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS AND RESTRICTED CASH	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-1.00M	USD	3 Qtrs
Net change in cash and cash equivalents and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-339.00M	USD	3 Qtrs
Net change in cash and cash equivalents and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-272.00M	USD	3 Qtrs
Cash and cash equivalents and restricted cash at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$1.03B	USD	Point-in-time
Cash and cash equivalents and restricted cash at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$844.00M	USD	Point-in-time
Cash and cash equivalents and restricted cash at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$1.12B	USD	Point-in-time
Cash and cash equivalents and restricted cash at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$1.36B	USD	Point-in-time
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$1.03B	USD	Point-in-time
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$844.00M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$1.12B	USD	Point-in-time
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$1.36B	USD	Point-in-time

Stockholders Equity 39 line items

Line Item	Tag	Value	Unit	Period
Beginning Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$7.59B	USD	Point-in-time
Beginning Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.41B	USD	Point-in-time
Beginning Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.86B	USD	Point-in-time
Beginning Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$7.25B	USD	Point-in-time
Beginning Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$7.46B	USD	Point-in-time
Beginning Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.97B	USD	Point-in-time
Net (loss) income	`ProfitLoss`	$195.00M	USD	1 Quarter
Net (loss) income	`ProfitLoss`	$-498.00M	USD	3 Qtrs
Net (loss) income	`ProfitLoss`	$-147.00M	USD	1 Quarter
Net (loss) income	`ProfitLoss`	$666.00M	USD	3 Qtrs
Other comprehensive income (loss) (F)	`OtherComprehensiveIncomeLossNetOfTax`	$182.00M	USD	1 Quarter
Other comprehensive income (loss) (F)	`OtherComprehensiveIncomeLossNetOfTax`	$-358.00M	USD	3 Qtrs
Other comprehensive income (loss) (F)	`OtherComprehensiveIncomeLossNetOfTax`	$205.00M	USD	3 Qtrs
Other comprehensive income (loss) (F)	`OtherComprehensiveIncomeLossNetOfTax`	$-228.00M	USD	1 Quarter
Stock-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$9.00M	USD	1 Quarter
Stock-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$29.00M	USD	3 Qtrs
Stock-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$29.00M	USD	3 Qtrs
Stock-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$8.00M	USD	1 Quarter
Common stock issued: compensation plans	`StockIssuedDuringPeriodValueShareBasedCompensation`	$23.00M	USD	3 Qtrs
Common stock issued: compensation plans	`StockIssuedDuringPeriodValueShareBasedCompensation`	$1.00M	USD	1 Quarter
Common stock issued: compensation plans	`StockIssuedDuringPeriodValueShareBasedCompensation`	$2.00M	USD	3 Qtrs
Common stock issued: compensation plans	`StockIssuedDuringPeriodValueShareBasedCompensation`	$1.00M	USD	1 Quarter
Contributions	`MinorityInterestIncreaseDecreaseFromCapitalContributionFromNoncontrollingInterestHolders`	$109.00M	USD	3 Qtrs
Contributions	`MinorityInterestIncreaseDecreaseFromCapitalContributionFromNoncontrollingInterestHolders`	$20.00M	USD	1 Quarter
Contributions	`MinorityInterestIncreaseDecreaseFromCapitalContributionFromNoncontrollingInterestHolders`	$41.00M	USD	3 Qtrs
Distributions	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$388.00M	USD	3 Qtrs
Distributions	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$566.00M	USD	3 Qtrs
Distributions	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$102.00M	USD	1 Quarter
Distributions	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$181.00M	USD	1 Quarter
Other	`StockholdersEquityOther`	$1.00M	USD	1 Quarter
Other	`StockholdersEquityOther`	$-28.00M	USD	3 Qtrs
Other	`StockholdersEquityOther`	$6.00M	USD	3 Qtrs
Other	`StockholdersEquityOther`	$-11.00M	USD	1 Quarter
Ending Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$7.59B	USD	Point-in-time
Ending Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.41B	USD	Point-in-time
Ending Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.86B	USD	Point-in-time
Ending Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$7.25B	USD	Point-in-time
Ending Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$7.46B	USD	Point-in-time
Ending Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.97B	USD	Point-in-time

Comprehensive Income 72 line items

Line Item	Tag	Value	Unit	Period
Net (loss) income (H), Alcoa Corporation	`NetIncomeLoss`	$-221.00M	USD	1 Quarter
Net (loss) income (H), Alcoa Corporation	`NetIncomeLoss`	$-822.00M	USD	3 Qtrs
Net (loss) income (H), Alcoa Corporation	`NetIncomeLoss`	$199.00M	USD	3 Qtrs
Net (loss) income (H), Alcoa Corporation	`NetIncomeLoss`	$-6.00M	USD	1 Quarter
Net (loss) income (H), Noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$201.00M	USD	1 Quarter
Net (loss) income (H), Noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$467.00M	USD	3 Qtrs
Net (loss) income (H), Noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$324.00M	USD	3 Qtrs
Net (loss) income (H), Noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$74.00M	USD	1 Quarter
Net (loss) income (H)	`ProfitLoss`	$195.00M	USD	1 Quarter
Net (loss) income (H)	`ProfitLoss`	$-498.00M	USD	3 Qtrs
Net (loss) income (H)	`ProfitLoss`	$-147.00M	USD	1 Quarter
Net (loss) income (H)	`ProfitLoss`	$666.00M	USD	3 Qtrs
Change in unrecognized net actuarial loss and prior service cost/benefit related to pension and other postretirement benefits, Alcoa Corporation	`OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent`	$70.00M	USD	3 Qtrs
Change in unrecognized net actuarial loss and prior service cost/benefit related to pension and other postretirement benefits, Alcoa Corporation	`OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent`	$398.00M	USD	1 Quarter
Change in unrecognized net actuarial loss and prior service cost/benefit related to pension and other postretirement benefits, Alcoa Corporation	`OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent`	$19.00M	USD	1 Quarter
Change in unrecognized net actuarial loss and prior service cost/benefit related to pension and other postretirement benefits, Alcoa Corporation	`OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent`	$682.00M	USD	3 Qtrs
Change in unrecognized net actuarial loss and prior service cost/benefit related to pension and other postretirement benefits, Noncontrolling interest	`OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest`	$7.00M	USD	3 Qtrs
Change in unrecognized net actuarial loss and prior service cost/benefit related to pension and other postretirement benefits, Noncontrolling interest	`OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest`	$-7.00M	USD	3 Qtrs
Change in unrecognized net actuarial loss and prior service cost/benefit related to pension and other postretirement benefits, Noncontrolling interest	`OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest`	$4.00M	USD	1 Quarter
Change in unrecognized net actuarial loss and prior service cost/benefit related to pension and other postretirement benefits, Noncontrolling interest	`OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest`	$-6.00M	USD	1 Quarter
Change in unrecognized net actuarial loss and prior service cost/benefit related to pension and other postretirement benefits	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$13.00M	USD	1 Quarter
Change in unrecognized net actuarial loss and prior service cost/benefit related to pension and other postretirement benefits	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$402.00M	USD	1 Quarter
Change in unrecognized net actuarial loss and prior service cost/benefit related to pension and other postretirement benefits	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$689.00M	USD	3 Qtrs
Change in unrecognized net actuarial loss and prior service cost/benefit related to pension and other postretirement benefits	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$63.00M	USD	3 Qtrs
Foreign currency translation adjustments, Alcoa Corporation	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent`	$-206.00M	USD	3 Qtrs
Foreign currency translation adjustments, Alcoa Corporation	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent`	$-142.00M	USD	1 Quarter
Foreign currency translation adjustments, Alcoa Corporation	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent`	$-224.00M	USD	1 Quarter
Foreign currency translation adjustments, Alcoa Corporation	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent`	$-586.00M	USD	3 Qtrs
Foreign currency translation adjustments, Noncontrolling interest	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest`	$-69.00M	USD	3 Qtrs
Foreign currency translation adjustments, Noncontrolling interest	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest`	$-75.00M	USD	1 Quarter
Foreign currency translation adjustments, Noncontrolling interest	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest`	$-54.00M	USD	1 Quarter
Foreign currency translation adjustments, Noncontrolling interest	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest`	$-219.00M	USD	3 Qtrs
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-196.00M	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-275.00M	USD	3 Qtrs
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-299.00M	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-805.00M	USD	3 Qtrs
Net change in unrecognized gains/losses on cash flow hedges, Alcoa Corporation	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent`	$346.00M	USD	3 Qtrs
Net change in unrecognized gains/losses on cash flow hedges, Alcoa Corporation	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent`	$-29.00M	USD	1 Quarter
Net change in unrecognized gains/losses on cash flow hedges, Alcoa Corporation	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent`	$-148.00M	USD	3 Qtrs
Net change in unrecognized gains/losses on cash flow hedges, Alcoa Corporation	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent`	$61.00M	USD	1 Quarter
Net change in unrecognized gains/losses on cash flow hedges, Noncontrolling interest	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxNoncontrollingInterest`	$5.00M	USD	1 Quarter
Net change in unrecognized gains/losses on cash flow hedges, Noncontrolling interest	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxNoncontrollingInterest`	$-3.00M	USD	1 Quarter
Net change in unrecognized gains/losses on cash flow hedges, Noncontrolling interest	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxNoncontrollingInterest`	$-25.00M	USD	3 Qtrs
Net change in unrecognized gains/losses on cash flow hedges, Noncontrolling interest	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxNoncontrollingInterest`	$2.00M	USD	3 Qtrs
Net change in unrecognized gains/losses on cash flow hedges	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax`	$-146.00M	USD	3 Qtrs
Net change in unrecognized gains/losses on cash flow hedges	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax`	$-24.00M	USD	1 Quarter
Net change in unrecognized gains/losses on cash flow hedges	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax`	$58.00M	USD	1 Quarter
Net change in unrecognized gains/losses on cash flow hedges	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax`	$321.00M	USD	3 Qtrs
Total Other comprehensive income (loss), net of tax, Alcoa Corporation	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$227.00M	USD	1 Quarter
Total Other comprehensive income (loss), net of tax, Alcoa Corporation	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-284.00M	USD	3 Qtrs
Total Other comprehensive income (loss), net of tax, Alcoa Corporation	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-144.00M	USD	1 Quarter
Total Other comprehensive income (loss), net of tax, Alcoa Corporation	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$442.00M	USD	3 Qtrs
Total Other comprehensive income (loss), net of tax, Noncontrolling interest	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest`	$-74.00M	USD	3 Qtrs
Total Other comprehensive income (loss), net of tax, Noncontrolling interest	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest`	$-45.00M	USD	1 Quarter
Total Other comprehensive income (loss), net of tax, Noncontrolling interest	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest`	$-237.00M	USD	3 Qtrs
Total Other comprehensive income (loss), net of tax, Noncontrolling interest	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest`	$-84.00M	USD	1 Quarter
Total Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$182.00M	USD	1 Quarter
Total Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-358.00M	USD	3 Qtrs
Total Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$205.00M	USD	3 Qtrs
Total Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-228.00M	USD	1 Quarter
Comprehensive (loss) income, Alcoa Corporation	`ComprehensiveIncomeNetOfTax`	$641.00M	USD	3 Qtrs
Comprehensive (loss) income, Alcoa Corporation	`ComprehensiveIncomeNetOfTax`	$221.00M	USD	1 Quarter
Comprehensive (loss) income, Alcoa Corporation	`ComprehensiveIncomeNetOfTax`	$-365.00M	USD	1 Quarter
Comprehensive (loss) income, Alcoa Corporation	`ComprehensiveIncomeNetOfTax`	$-1.11B	USD	3 Qtrs
Comprehensive (loss) income, Noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$156.00M	USD	1 Quarter
Comprehensive (loss) income, Noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$250.00M	USD	3 Qtrs
Comprehensive (loss) income, Noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-10.00M	USD	1 Quarter
Comprehensive (loss) income, Noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$230.00M	USD	3 Qtrs
Comprehensive (loss) income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$871.00M	USD	3 Qtrs
Comprehensive (loss) income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-375.00M	USD	1 Quarter
Comprehensive (loss) income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$377.00M	USD	1 Quarter
Comprehensive (loss) income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-856.00M	USD	3 Qtrs

Data is extracted from SEC EDGAR XBRL filings. Values shown are as reported in the filing.