10-K Filing

ALCOA CORP CIK: 1675149 FY 2021

Filing Information

Form Type	10-K
Accession Number	`0001564590-22-006763`
Period End Date	20211231
Filing Date	20220224
Fiscal Year	2021
Fiscal Period	FY
XBRL Instance	aa-10k_20211231_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 79 Income Statement 48 Cash Flow Statement 112 Stockholders Equity 33 Comprehensive Income 53

Balance Sheet 79 line items

Line Item	Tag	Value	Unit	Period
Cash and cash equivalents (P)	`CashAndCashEquivalentsAtCarryingValue`	$1.61B	USD	Point-in-time
Cash and cash equivalents (P)	`CashAndCashEquivalentsAtCarryingValue`	$1.81B	USD	Point-in-time
Receivables from customers	`AccountsReceivableNetCurrent`	$757.00M	USD	Point-in-time
Receivables from customers	`AccountsReceivableNetCurrent`	$471.00M	USD	Point-in-time
Other receivables	`OtherReceivablesNetCurrent`	$85.00M	USD	Point-in-time
Other receivables	`OtherReceivablesNetCurrent`	$127.00M	USD	Point-in-time
Inventories (J)	`InventoryNet`	$1.40B	USD	Point-in-time
Inventories (J)	`InventoryNet`	$1.96B	USD	Point-in-time
Fair value of derivative instruments (P)	`DerivativeAssetsCurrent`	$21.00M	USD	Point-in-time
Fair value of derivative instruments (P)	`DerivativeAssetsCurrent`	$14.00M	USD	Point-in-time
Assets held for sale (C)	`AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$648.00M	USD	Point-in-time
Prepaid expenses and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$358.00M	USD	Point-in-time
Prepaid expenses and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$290.00M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$5.03B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$4.52B	USD	Point-in-time
Properties, plants, and equipment, net (K)	`PropertyPlantAndEquipmentNet`	$7.19B	USD	Point-in-time
Properties, plants, and equipment, net (K)	`PropertyPlantAndEquipmentNet`	$6.62B	USD	Point-in-time
Investments (H)	`InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures`	$1.20B	USD	Point-in-time
Investments (H)	`InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures`	$1.05B	USD	Point-in-time
Deferred income taxes (Q)	`DeferredIncomeTaxAssetsNet`	$655.00M	USD	Point-in-time
Deferred income taxes (Q)	`DeferredIncomeTaxAssetsNet`	$506.00M	USD	Point-in-time
Fair value of derivative instruments (P)	`DerivativeAssetsNoncurrent`	$7.00M	USD	Point-in-time
Other noncurrent assets (U)	`OtherAssetsNoncurrent`	$1.44B	USD	Point-in-time
Other noncurrent assets (U)	`OtherAssetsNoncurrent`	$1.66B	USD	Point-in-time
Total Assets	`Assets`	$15.03B	USD	Point-in-time
Total Assets	`Assets`	$14.86B	USD	Point-in-time
Accounts payable, trade	`AccountsPayableCurrent`	$1.67B	USD	Point-in-time
Accounts payable, trade	`AccountsPayableCurrent`	$1.40B	USD	Point-in-time
Accrued compensation and retirement costs	`EmployeeRelatedLiabilitiesCurrent`	$395.00M	USD	Point-in-time
Accrued compensation and retirement costs	`EmployeeRelatedLiabilitiesCurrent`	$383.00M	USD	Point-in-time
Taxes, including income taxes	`TaxesPayableCurrent`	$374.00M	USD	Point-in-time
Taxes, including income taxes	`TaxesPayableCurrent`	$91.00M	USD	Point-in-time
Fair value of derivative instruments (P)	`DerivativeLiabilitiesCurrent`	$274.00M	USD	Point-in-time
Fair value of derivative instruments (P)	`DerivativeLiabilitiesCurrent`	$103.00M	USD	Point-in-time
Liabilities held for sale (C)	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$242.00M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$525.00M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$517.00M	USD	Point-in-time
Long-term debt due within one year (M & P)	`LongTermDebtAndCapitalLeaseObligationsCurrent`	$2.00M	USD	Point-in-time
Long-term debt due within one year (M & P)	`LongTermDebtAndCapitalLeaseObligationsCurrent`	$1.00M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$2.76B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$3.22B	USD	Point-in-time
Long-term debt, less amount due within one year (M & P)	`LongTermDebtAndCapitalLeaseObligations`	$1.73B	USD	Point-in-time
Long-term debt, less amount due within one year (M & P)	`LongTermDebtAndCapitalLeaseObligations`	$2.46B	USD	Point-in-time
Accrued pension benefits (O)	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$417.00M	USD	Point-in-time
Accrued pension benefits (O)	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$1.49B	USD	Point-in-time
Accrued other postretirement benefits (O)	`OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent`	$744.00M	USD	Point-in-time
Accrued other postretirement benefits (O)	`OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent`	$650.00M	USD	Point-in-time
Asset retirement obligations (R)	`AssetRetirementObligationsNoncurrent`	$625.00M	USD	Point-in-time
Asset retirement obligations (R)	`AssetRetirementObligationsNoncurrent`	$622.00M	USD	Point-in-time
Environmental remediation (S)	`AccruedEnvironmentalLossContingenciesNoncurrent`	$293.00M	USD	Point-in-time
Environmental remediation (S)	`AccruedEnvironmentalLossContingenciesNoncurrent`	$265.00M	USD	Point-in-time
Fair value of derivative instruments (P)	`DerivativeLiabilitiesNoncurrent`	$742.00M	USD	Point-in-time
Fair value of derivative instruments (P)	`DerivativeLiabilitiesNoncurrent`	$1.05B	USD	Point-in-time
Noncurrent income taxes (Q)	`AccruedIncomeTaxesNoncurrent`	$209.00M	USD	Point-in-time
Noncurrent income taxes (Q)	`AccruedIncomeTaxesNoncurrent`	$191.00M	USD	Point-in-time
Other noncurrent liabilities and deferred credits (U)	`DeferredCreditsAndOtherLiabilitiesNoncurrent`	$515.00M	USD	Point-in-time
Other noncurrent liabilities and deferred credits (U)	`DeferredCreditsAndOtherLiabilitiesNoncurrent`	$599.00M	USD	Point-in-time
Total liabilities	`Liabilities`	$9.84B	USD	Point-in-time
Total liabilities	`Liabilities`	$8.74B	USD	Point-in-time
Contingencies and commitments (S)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Contingencies and commitments (S)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Common stock (N)	`CommonStockValue`	$2.00M	USD	Point-in-time
Common stock (N)	`CommonStockValue`	$2.00M	USD	Point-in-time
Additional capital	`AdditionalPaidInCapitalCommonStock`	$9.66B	USD	Point-in-time
Additional capital	`AdditionalPaidInCapitalCommonStock`	$9.58B	USD	Point-in-time
Accumulated deficit	`RetainedEarningsAccumulatedDeficit`	$-725.00M	USD	Point-in-time
Accumulated deficit	`RetainedEarningsAccumulatedDeficit`	$-315.00M	USD	Point-in-time
Accumulated other comprehensive loss (G)	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-4.59B	USD	Point-in-time
Accumulated other comprehensive loss (G)	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-5.63B	USD	Point-in-time
Total Alcoa Corporation shareholders equity	`StockholdersEquity`	$3.31B	USD	Point-in-time
Total Alcoa Corporation shareholders equity	`StockholdersEquity`	$4.67B	USD	Point-in-time
Noncontrolling interest (A)	`MinorityInterest`	$1.61B	USD	Point-in-time
Noncontrolling interest (A)	`MinorityInterest`	$1.71B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$7.59B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.28B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.89B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.02B	USD	Point-in-time
Total Liabilities and Equity	`LiabilitiesAndStockholdersEquity`	$14.86B	USD	Point-in-time
Total Liabilities and Equity	`LiabilitiesAndStockholdersEquity`	$15.03B	USD	Point-in-time

Income Statement 48 line items

Line Item	Tag	Value	Unit	Period
Sales (E)	`RevenueFromContractWithCustomerExcludingAssessedTax`	$9.29B	USD	Annual
Sales (E)	`RevenueFromContractWithCustomerExcludingAssessedTax`	$12.15B	USD	Annual
Sales (E)	`RevenueFromContractWithCustomerExcludingAssessedTax`	$10.43B	USD	Annual
Cost of goods sold (exclusive of expenses below)	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$7.97B	USD	Annual
Cost of goods sold (exclusive of expenses below)	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$8.54B	USD	Annual
Cost of goods sold (exclusive of expenses below)	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$9.15B	USD	Annual
Selling, general administrative, and other expenses	`SellingGeneralAndAdministrativeExpense`	$280.00M	USD	Annual
Selling, general administrative, and other expenses	`SellingGeneralAndAdministrativeExpense`	$206.00M	USD	Annual
Selling, general administrative, and other expenses	`SellingGeneralAndAdministrativeExpense`	$227.00M	USD	Annual
Research and development expenses	`ResearchAndDevelopmentExpense`	$31.00M	USD	Annual
Research and development expenses	`ResearchAndDevelopmentExpense`	$27.00M	USD	Annual
Research and development expenses	`ResearchAndDevelopmentExpense`	$27.00M	USD	Annual
Provision for depreciation, depletion, and amortization	`DepreciationDepletionAndAmortization`	$713.00M	USD	Annual
Provision for depreciation, depletion, and amortization	`DepreciationDepletionAndAmortization`	$653.00M	USD	Annual
Provision for depreciation, depletion, and amortization	`DepreciationDepletionAndAmortization`	$664.00M	USD	Annual
Restructuring and other charges, net (D)	`RestructuringAndOtherCharges`	$1.03B	USD	Annual
Restructuring and other charges, net (D)	`RestructuringAndOtherCharges`	$1.13B	USD	Annual
Restructuring and other charges, net (D)	`RestructuringAndOtherCharges`	$104.00M	USD	Annual
Interest expense (U)	`InterestExpense`	$195.00M	USD	Annual
Interest expense (U)	`InterestExpense`	$121.00M	USD	Annual
Interest expense (U)	`InterestExpense`	$146.00M	USD	Annual
Other (income) expenses, net (U)	`NonoperatingIncomeExpense`	$-8.00M	USD	Annual
Other (income) expenses, net (U)	`NonoperatingIncomeExpense`	$-162.00M	USD	Annual
Other (income) expenses, net (U)	`NonoperatingIncomeExpense`	$445.00M	USD	Annual
Total costs and expenses	`CostsAndOperatingExpensesAndNonoperatingIncomeExpenses`	$9.11B	USD	Annual
Total costs and expenses	`CostsAndOperatingExpensesAndNonoperatingIncomeExpenses`	$10.87B	USD	Annual
Total costs and expenses	`CostsAndOperatingExpensesAndNonoperatingIncomeExpenses`	$10.95B	USD	Annual
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$-438.00M	USD	Annual
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$173.00M	USD	Annual
Income (loss) before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$1.20B	USD	Annual
Provision for income taxes (Q)	`IncomeTaxExpenseBenefit`	$415.00M	USD	Annual
Provision for income taxes (Q)	`IncomeTaxExpenseBenefit`	$629.00M	USD	Annual
Provision for income taxes (Q)	`IncomeTaxExpenseBenefit`	$187.00M	USD	Annual
Net income (loss)	`ProfitLoss`	$570.00M	USD	Annual
Net income (loss)	`ProfitLoss`	$-14.00M	USD	Annual
Net income (loss)	`ProfitLoss`	$-853.00M	USD	Annual
Less: Net income attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$141.00M	USD	Annual
Less: Net income attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$156.00M	USD	Annual
Less: Net income attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$272.00M	USD	Annual
Net income (loss) attributable to Alcoa Corporation	`NetIncomeLoss`	$-1.12B	USD	Annual
Net income (loss) attributable to Alcoa Corporation	`NetIncomeLoss`	$-170.00M	USD	Annual
Net income (loss) attributable to Alcoa Corporation	`NetIncomeLoss`	$429.00M	USD	Annual
Basic	`EarningsPerShareBasic`	$-0.91	USD	Annual
Basic	`EarningsPerShareBasic`	$-6.07	USD	Annual
Basic	`EarningsPerShareBasic`	$2.30	USD	Annual
Diluted	`EarningsPerShareDiluted`	$-6.07	USD	Annual
Diluted	`EarningsPerShareDiluted`	$-0.91	USD	Annual
Diluted	`EarningsPerShareDiluted`	$2.26	USD	Annual

Cash Flow Statement 112 line items

Line Item	Tag	Value	Unit	Period
Net income (loss)	`ProfitLoss`	$570.00M	USD	Annual
Net income (loss)	`ProfitLoss`	$-14.00M	USD	Annual
Net income (loss)	`ProfitLoss`	$-853.00M	USD	Annual
Depreciation, depletion, and amortization	`DepreciationDepletionAndAmortization`	$713.00M	USD	Annual
Depreciation, depletion, and amortization	`DepreciationDepletionAndAmortization`	$653.00M	USD	Annual
Depreciation, depletion, and amortization	`DepreciationDepletionAndAmortization`	$664.00M	USD	Annual
Deferred income taxes (Q)	`DeferredIncomeTaxExpenseBenefit`	$-26.00M	USD	Annual
Deferred income taxes (Q)	`DeferredIncomeTaxExpenseBenefit`	$147.00M	USD	Annual
Deferred income taxes (Q)	`DeferredIncomeTaxExpenseBenefit`	$15.00M	USD	Annual
Equity earnings, net of dividends (H)	`IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions`	$-21.00M	USD	Annual
Equity earnings, net of dividends (H)	`IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions`	$138.00M	USD	Annual
Equity earnings, net of dividends (H)	`IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions`	$-20.00M	USD	Annual
Restructuring and other charges, net (D)	`RestructuringAndOtherCharges`	$1.03B	USD	Annual
Restructuring and other charges, net (D)	`RestructuringAndOtherCharges`	$1.13B	USD	Annual
Restructuring and other charges, net (D)	`RestructuringAndOtherCharges`	$104.00M	USD	Annual
Net gain from investing activitiesasset sales (U)	`GainLossOnDispositionOfAssets1`	$354.00M	USD	Annual
Net gain from investing activitiesasset sales (U)	`GainLossOnDispositionOfAssets1`	$173.00M	USD	Annual
Net gain from investing activitiesasset sales (U)	`GainLossOnDispositionOfAssets1`	$3.00M	USD	Annual
Net periodic pension benefit cost (O)	`DefinedBenefitPensionPlansNetPeriodicBenefitCost`	$138.00M	USD	Annual
Net periodic pension benefit cost (O)	`DefinedBenefitPensionPlansNetPeriodicBenefitCost`	$119.00M	USD	Annual
Net periodic pension benefit cost (O)	`DefinedBenefitPensionPlansNetPeriodicBenefitCost`	$47.00M	USD	Annual
Stock-based compensation (N)	`ShareBasedCompensation`	$30.00M	USD	Annual
Stock-based compensation (N)	`ShareBasedCompensation`	$25.00M	USD	Annual
Stock-based compensation (N)	`ShareBasedCompensation`	$39.00M	USD	Annual
Provision for bad debt expense	`ProvisionForDoubtfulAccounts`	$1.00M	USD	Annual
Provision for bad debt expense	`ProvisionForDoubtfulAccounts`	$2.00M	USD	Annual
Provision for bad debt expense	`ProvisionForDoubtfulAccounts`	$21.00M	USD	Annual
Premium paid on early redemption of debt	`GainsLossesOnExtinguishmentOfDebt`	$-43.00M	USD	Annual
Other	`OtherNoncashIncomeExpense`	$-30.00M	USD	Annual
Other	`OtherNoncashIncomeExpense`	$-24.00M	USD	Annual
Other	`OtherNoncashIncomeExpense`	$-32.00M	USD	Annual
(Increase) decrease in receivables	`IncreaseDecreaseInReceivables`	$414.00M	USD	Annual
(Increase) decrease in receivables	`IncreaseDecreaseInReceivables`	$-283.00M	USD	Annual
(Increase) decrease in receivables	`IncreaseDecreaseInReceivables`	$-16.00M	USD	Annual
(Increase) decrease in inventories (J)	`IncreaseDecreaseInInventories`	$-137.00M	USD	Annual
(Increase) decrease in inventories (J)	`IncreaseDecreaseInInventories`	$639.00M	USD	Annual
(Increase) decrease in inventories (J)	`IncreaseDecreaseInInventories`	$-122.00M	USD	Annual
(Increase) decrease in prepaid expenses and other current assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$41.00M	USD	Annual
(Increase) decrease in prepaid expenses and other current assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$-27.00M	USD	Annual
(Increase) decrease in prepaid expenses and other current assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$-17.00M	USD	Annual
Increase (decrease) in accounts payable, trade	`IncreaseDecreaseInAccountsPayableTrade`	$-153.00M	USD	Annual
Increase (decrease) in accounts payable, trade	`IncreaseDecreaseInAccountsPayableTrade`	$25.00M	USD	Annual
Increase (decrease) in accounts payable, trade	`IncreaseDecreaseInAccountsPayableTrade`	$354.00M	USD	Annual
(Decrease) in accrued expenses	`IncreaseDecreaseInAccruedLiabilities`	$-38.00M	USD	Annual
(Decrease) in accrued expenses	`IncreaseDecreaseInAccruedLiabilities`	$-153.00M	USD	Annual
(Decrease) in accrued expenses	`IncreaseDecreaseInAccruedLiabilities`	$-175.00M	USD	Annual
Increase (decrease) in taxes, including income taxes	`IncreaseDecreaseInAccruedTaxesPayable`	$-330.00M	USD	Annual
Increase (decrease) in taxes, including income taxes	`IncreaseDecreaseInAccruedTaxesPayable`	$119.00M	USD	Annual
Increase (decrease) in taxes, including income taxes	`IncreaseDecreaseInAccruedTaxesPayable`	$301.00M	USD	Annual
Pension contributions (O)	`PensionContributions`	$343.00M	USD	Annual
Pension contributions (O)	`PensionContributions`	$579.00M	USD	Annual
Pension contributions (O)	`PensionContributions`	$173.00M	USD	Annual
(Increase) in noncurrent assets	`IncreaseDecreaseInOtherNoncurrentAssets`	$24.00M	USD	Annual
(Increase) in noncurrent assets	`IncreaseDecreaseInOtherNoncurrentAssets`	$82.00M	USD	Annual
(Increase) in noncurrent assets	`IncreaseDecreaseInOtherNoncurrentAssets`	$160.00M	USD	Annual
(Decrease) in noncurrent liabilities	`IncreaseDecreaseInOtherNoncurrentLiabilities`	$-35.00M	USD	Annual
(Decrease) in noncurrent liabilities	`IncreaseDecreaseInOtherNoncurrentLiabilities`	$-88.00M	USD	Annual
(Decrease) in noncurrent liabilities	`IncreaseDecreaseInOtherNoncurrentLiabilities`	$-30.00M	USD	Annual
Cash provided from operations	`NetCashProvidedByUsedInOperatingActivities`	$394.00M	USD	Annual
Cash provided from operations	`NetCashProvidedByUsedInOperatingActivities`	$686.00M	USD	Annual
Cash provided from operations	`NetCashProvidedByUsedInOperatingActivities`	$920.00M	USD	Annual
Additions to debt (original maturities greater than three months) (M)	`AdditionsToLongTermDebtIssuedLessIssuanceDiscount`	$739.00M	USD	Annual
Additions to debt (original maturities greater than three months) (M)	`AdditionsToLongTermDebtIssuedLessIssuanceDiscount`	$495.00M	USD	Annual
Payments on debt (original maturities greater than three months) (M)	`RepaymentsOfLongTermDebt`	$1.29B	USD	Annual
Payments on debt (original maturities greater than three months) (M)	`RepaymentsOfLongTermDebt`	$1.00M	USD	Annual
Payments on debt (original maturities greater than three months) (M)	`RepaymentsOfLongTermDebt`	$7.00M	USD	Annual
Proceeds from the exercise of employee stock options (N)	`ProceedsFromStockOptionsExercised`	$25.00M	USD	Annual
Proceeds from the exercise of employee stock options (N)	`ProceedsFromStockOptionsExercised`	$2.00M	USD	Annual
Proceeds from the exercise of employee stock options (N)	`ProceedsFromStockOptionsExercised`	$1.00M	USD	Annual
Repurchase of common stock (N)	`PaymentsForRepurchaseOfCommonStock`	$150.00M	USD	Annual
Dividends paid on Alcoa common stock (N)	`PaymentsOfDividendsCommonStock`	$19.00M	USD	Annual
Financial contributions for the divestiture of businesses (C)	`PaymentsForFinancialContributionsForTheDivestitureOfBusinesses`	$38.00M	USD	Annual
Financial contributions for the divestiture of businesses (C)	`PaymentsForFinancialContributionsForTheDivestitureOfBusinesses`	$12.00M	USD	Annual
Financial contributions for the divestiture of businesses (C)	`PaymentsForFinancialContributionsForTheDivestitureOfBusinesses`	$17.00M	USD	Annual
Contributions from noncontrolling interest (A)	`ProceedsFromMinorityShareholders`	$21.00M	USD	Annual
Contributions from noncontrolling interest (A)	`ProceedsFromMinorityShareholders`	$51.00M	USD	Annual
Contributions from noncontrolling interest (A)	`ProceedsFromMinorityShareholders`	$24.00M	USD	Annual
Distributions to noncontrolling interest	`PaymentsOfDividendsMinorityInterest`	$215.00M	USD	Annual
Distributions to noncontrolling interest	`PaymentsOfDividendsMinorityInterest`	$472.00M	USD	Annual
Distributions to noncontrolling interest	`PaymentsOfDividendsMinorityInterest`	$207.00M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-6.00M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-4.00M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-4.00M	USD	Annual
Cash (used for) provided from financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-1.16B	USD	Annual
Cash (used for) provided from financing activities	`NetCashProvidedByUsedInFinancingActivities`	$514.00M	USD	Annual
Cash (used for) provided from financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-444.00M	USD	Annual
Capital expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$379.00M	USD	Annual
Capital expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$353.00M	USD	Annual
Capital expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$390.00M	USD	Annual
Proceeds from the sale of assets and businesses (C)	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$23.00M	USD	Annual
Proceeds from the sale of assets and businesses (C)	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$966.00M	USD	Annual
Proceeds from the sale of assets and businesses (C)	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$198.00M	USD	Annual
Additions to investments (H)	`PaymentsToAcquireInvestments`	$11.00M	USD	Annual
Additions to investments (H)	`PaymentsToAcquireInvestments`	$12.00M	USD	Annual
Additions to investments (H)	`PaymentsToAcquireInvestments`	$112.00M	USD	Annual
Cash provided from (used for) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-468.00M	USD	Annual
Cash provided from (used for) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-167.00M	USD	Annual
Cash provided from (used for) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$565.00M	USD	Annual
Effect of exchange rate changes on cash and cash equivalents and restricted cash	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-13.00M	USD	Annual
Effect of exchange rate changes on cash and cash equivalents and restricted cash	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-7.00M	USD	Annual
Effect of exchange rate changes on cash and cash equivalents and restricted cash	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-14.00M	USD	Annual
Net change in cash and cash equivalents and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-233.00M	USD	Annual
Net change in cash and cash equivalents and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$727.00M	USD	Annual
Net change in cash and cash equivalents and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$314.00M	USD	Annual
Cash and cash equivalents and restricted cash at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$883.00M	USD	Point-in-time
Cash and cash equivalents and restricted cash at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$1.61B	USD	Point-in-time
Cash and cash equivalents and restricted cash at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$1.92B	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 end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$883.00M	USD	Point-in-time
Cash and cash equivalents and restricted cash at end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$1.61B	USD	Point-in-time
Cash and cash equivalents and restricted cash at end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$1.92B	USD	Point-in-time
Cash and cash equivalents and restricted cash at end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$1.12B	USD	Point-in-time

Stockholders Equity 33 line items

Line Item	Tag	Value	Unit	Period
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$7.59B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.28B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.89B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.02B	USD	Point-in-time
Net (loss) income	`ProfitLoss`	$570.00M	USD	Annual
Net (loss) income	`ProfitLoss`	$-14.00M	USD	Annual
Net (loss) income	`ProfitLoss`	$-853.00M	USD	Annual
Other comprehensive loss (G)	`OtherComprehensiveIncomeLossNetOfTax`	$998.00M	USD	Annual
Other comprehensive loss (G)	`OtherComprehensiveIncomeLossNetOfTax`	$-454.00M	USD	Annual
Other comprehensive loss (G)	`OtherComprehensiveIncomeLossNetOfTax`	$-697.00M	USD	Annual
Stock-based compensation (N)	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$30.00M	USD	Annual
Stock-based compensation (N)	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$39.00M	USD	Annual
Stock-based compensation (N)	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$25.00M	USD	Annual
Common stock issued: Compensation plans (N)	`StockIssuedDuringPeriodValueShareBasedCompensation`	$2.00M	USD	Annual
Common stock issued: Compensation plans (N)	`StockIssuedDuringPeriodValueShareBasedCompensation`	$1.00M	USD	Annual
Common stock issued: Compensation plans (N)	`StockIssuedDuringPeriodValueShareBasedCompensation`	$25.00M	USD	Annual
Repurchase of common stock (N)	`StockRepurchasedDuringPeriodValue`	$150.00M	USD	Annual
Dividends paid on Alcoa common stock (N)	`DividendsCommonStock`	-	USD	Annual
Dividends paid on Alcoa common stock (N)	`DividendsCommonStock`	-	USD	Annual
Dividends paid on Alcoa common stock (N)	`DividendsCommonStock`	$19.00M	USD	Annual
Contributions	`MinorityInterestIncreaseDecreaseFromCapitalContributionFromNoncontrollingInterestHolders`	$24.00M	USD	Annual
Contributions	`MinorityInterestIncreaseDecreaseFromCapitalContributionFromNoncontrollingInterestHolders`	$51.00M	USD	Annual
Contributions	`MinorityInterestIncreaseDecreaseFromCapitalContributionFromNoncontrollingInterestHolders`	$21.00M	USD	Annual
Distributions	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$207.00M	USD	Annual
Distributions	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$215.00M	USD	Annual
Distributions	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$472.00M	USD	Annual
Other	`StockholdersEquityOther`	$2.00M	USD	Annual
Other	`StockholdersEquityOther`	$6.00M	USD	Annual
Other	`StockholdersEquityOther`	$1.00M	USD	Annual
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$7.59B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.28B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.89B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.02B	USD	Point-in-time

Comprehensive Income 53 line items

Line Item	Tag	Value	Unit	Period
Net income (loss) attributable to Alcoa Corporation	`NetIncomeLoss`	$-1.12B	USD	Annual
Net income (loss) attributable to Alcoa Corporation	`NetIncomeLoss`	$-170.00M	USD	Annual
Net income (loss) attributable to Alcoa Corporation	`NetIncomeLoss`	$429.00M	USD	Annual
Net income (loss), Noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$141.00M	USD	Annual
Net income (loss), Noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$156.00M	USD	Annual
Net income (loss), Noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$272.00M	USD	Annual
Net income (loss)	`ProfitLoss`	$570.00M	USD	Annual
Net income (loss)	`ProfitLoss`	$-14.00M	USD	Annual
Net income (loss)	`ProfitLoss`	$-853.00M	USD	Annual
Change in unrecognized net actuarial loss and prior service cost/benefit related to pension and other postretirement benefits, Alcoa Corporation	`OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent`	$1.00M	USD	Annual
Change in unrecognized net actuarial loss and prior service cost/benefit related to pension and other postretirement benefits, Alcoa Corporation	`OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent`	$-254.00M	USD	Annual
Change in unrecognized net actuarial loss and prior service cost/benefit related to pension and other postretirement benefits, Alcoa Corporation	`OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent`	$1.65B	USD	Annual
Change in unrecognized net actuarial loss and prior service cost/benefit related to pension and other postretirement benefits, Noncontrolling interest	`OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest`	$54.00M	USD	Annual
Change in unrecognized net actuarial loss and prior service cost/benefit related to pension and other postretirement benefits, Noncontrolling interest	`OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest`	$-11.00M	USD	Annual
Change in unrecognized net actuarial loss and prior service cost/benefit related to pension and other postretirement benefits, Noncontrolling interest	`OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest`	$-10.00M	USD	Annual
Change in unrecognized net actuarial loss and prior service cost/benefit related to pension and other postretirement benefits	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$1.71B	USD	Annual
Change in unrecognized net actuarial loss and prior service cost/benefit related to pension and other postretirement benefits	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-265.00M	USD	Annual
Change in unrecognized net actuarial loss and prior service cost/benefit related to pension and other postretirement benefits	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-9.00M	USD	Annual
Foreign currency translation adjustments, Alcoa Corporation	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent`	$-225.00M	USD	Annual
Foreign currency translation adjustments, Alcoa Corporation	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent`	$-89.00M	USD	Annual
Foreign currency translation adjustments, Alcoa Corporation	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent`	$-229.00M	USD	Annual
Foreign currency translation adjustments, Noncontrolling interest	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest`	$-10.00M	USD	Annual
Foreign currency translation adjustments, Noncontrolling interest	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest`	$-93.00M	USD	Annual
Foreign currency translation adjustments, Noncontrolling interest	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToNoncontrollingInterest`	$-24.00M	USD	Annual
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-113.00M	USD	Annual
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-322.00M	USD	Annual
Foreign currency translation adjustments	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-235.00M	USD	Annual
Net change in unrecognized gains/losses on cash flow hedges, Alcoa Corporation	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent`	$-388.00M	USD	Annual
Net change in unrecognized gains/losses on cash flow hedges, Alcoa Corporation	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent`	$-176.00M	USD	Annual
Net change in unrecognized gains/losses on cash flow hedges, Alcoa Corporation	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxParent`	$-321.00M	USD	Annual
Net change in unrecognized gains/losses on cash flow hedges, Noncontrolling interest	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxNoncontrollingInterest`	$-21.00M	USD	Annual
Net change in unrecognized gains/losses on cash flow hedges, Noncontrolling interest	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTaxNoncontrollingInterest`	$-11.00M	USD	Annual
Net change in unrecognized gains/losses on cash flow hedges	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax`	$-197.00M	USD	Annual
Net change in unrecognized gains/losses on cash flow hedges	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax`	$-332.00M	USD	Annual
Net change in unrecognized gains/losses on cash flow hedges	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax`	$-388.00M	USD	Annual
Total Other comprehensive income (loss), net of tax, Alcoa Corporation	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-655.00M	USD	Annual
Total Other comprehensive income (loss), net of tax, Alcoa Corporation	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-409.00M	USD	Annual
Total Other comprehensive income (loss), net of tax, Alcoa Corporation	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$1.04B	USD	Annual
Total Other comprehensive income (loss), net of tax, Noncontrolling interest	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest`	$-39.00M	USD	Annual
Total Other comprehensive income (loss), net of tax, Noncontrolling interest	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest`	$-45.00M	USD	Annual
Total Other comprehensive income (loss), net of tax, Noncontrolling interest	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest`	$-42.00M	USD	Annual
Total Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$998.00M	USD	Annual
Total Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-454.00M	USD	Annual
Total Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-697.00M	USD	Annual
Comprehensive income (loss), Alcoa Corporation	`ComprehensiveIncomeNetOfTax`	$1.47B	USD	Annual
Comprehensive income (loss), Alcoa Corporation	`ComprehensiveIncomeNetOfTax`	$-825.00M	USD	Annual
Comprehensive income (loss), Alcoa Corporation	`ComprehensiveIncomeNetOfTax`	$-1.53B	USD	Annual
Comprehensive income (loss), Noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$114.00M	USD	Annual
Comprehensive income (loss), Noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$102.00M	USD	Annual
Comprehensive income (loss), Noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$227.00M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-1.31B	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$1.57B	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-711.00M	USD	Annual

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