10-K Filing

CLEVELAND-CLIFFS INC. CIK: 764065 FY 2021

Filing Information

Form Type	10-K
Accession Number	`0000764065-22-000037`
Period End Date	20211231
Filing Date	20220211
Fiscal Year	2021
Fiscal Period	FY
XBRL Instance	clf-20211231_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 86 Income Statement 75 Cash Flow Statement 86 Stockholders Equity 28 Comprehensive Income 24

Balance Sheet 86 line items

Line Item	Tag	Value	Unit	Period
Redeemable preferred stock, par value (in dollars per share)	`TemporaryEquityParOrStatedValuePerShare`	-	USD	Point-in-time
Redeemable preferred stock, par value (in dollars per share)	`TemporaryEquityParOrStatedValuePerShare`	-	USD	Point-in-time
Redeemable preferred stock, authorized (in shares)	`TemporaryEquitySharesAuthorized`	0.00	shares	Point-in-time
Redeemable preferred stock, authorized (in shares)	`TemporaryEquitySharesAuthorized`	583,273.00	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$48.00M	USD	Point-in-time
Redeemable preferred stock, issued (in shares)	`TemporaryEquitySharesIssued`	583,273.00	shares	Point-in-time
Redeemable preferred stock, issued (in shares)	`TemporaryEquitySharesIssued`	0.00	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$112.00M	USD	Point-in-time
Accounts receivable, net	`AccountsReceivableNetCurrent`	$2.15B	USD	Point-in-time
Accounts receivable, net	`AccountsReceivableNetCurrent`	$1.17B	USD	Point-in-time
Redeemable preferred stock, outstanding (in shares)	`TemporaryEquitySharesOutstanding`	583,273.00	shares	Point-in-time
Redeemable preferred stock, outstanding (in shares)	`TemporaryEquitySharesOutstanding`	0.00	shares	Point-in-time
Common shares, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.12	USD	Point-in-time
Inventories	`InventoryNet`	$3.83B	USD	Point-in-time
Inventories	`InventoryNet`	$5.19B	USD	Point-in-time
Common shares, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.12	USD	Point-in-time
Other current assets	`OtherAssetsCurrent`	$263.00M	USD	Point-in-time
Other current assets	`OtherAssetsCurrent`	$189.00M	USD	Point-in-time
Common shares, authorized (in shares)	`CommonStockSharesAuthorized`	1.20B	shares	Point-in-time
Common shares, authorized (in shares)	`CommonStockSharesAuthorized`	600.00M	shares	Point-in-time
Common shares, authorized (in shares)	`CommonStockSharesAuthorized`	1.20B	shares	Point-in-time
Common shares, authorized (in shares)	`CommonStockSharesAuthorized`	600.00M	shares	Point-in-time
Total current assets	`AssetsCurrent`	$7.65B	USD	Point-in-time
Common shares, issued (in shares)	`CommonStockSharesIssued`	20.00M	shares	Point-in-time
Total current assets	`AssetsCurrent`	$5.30B	USD	Point-in-time
Common shares, issued (in shares)	`CommonStockSharesIssued`	506.83M	shares	Point-in-time
Common shares, issued (in shares)	`CommonStockSharesIssued`	506.83M	shares	Point-in-time
Common shares, outstanding (in shares)	`CommonStockSharesOutstanding`	477.52M	shares	Point-in-time
Common shares, outstanding (in shares)	`CommonStockSharesOutstanding`	500.16M	shares	Point-in-time
Common shares in treasury (in shares)	`TreasuryStockShares`	6.67M	shares	Point-in-time
Property, plant and equipment, net	`PropertyPlantAndEquipmentNet`	$8.74B	USD	Point-in-time
Property, plant and equipment, net	`PropertyPlantAndEquipmentNet`	$9.19B	USD	Point-in-time
Common shares in treasury (in shares)	`TreasuryStockShares`	29.32M	shares	Point-in-time
Property, plant and equipment, net	`PropertyPlantAndEquipmentNet`	$1.93B	USD	Point-in-time
Goodwill	`Goodwill`	$1.41B	USD	Point-in-time
Goodwill	`Goodwill`	$1.12B	USD	Point-in-time
Other non-current assets	`OtherAssetsNoncurrent`	$1.02B	USD	Point-in-time
Other non-current assets	`OtherAssetsNoncurrent`	$1.32B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$18.98B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$16.77B	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$2.07B	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$1.57B	USD	Point-in-time
Accrued employment costs	`EmployeeRelatedLiabilitiesCurrent`	$585.00M	USD	Point-in-time
Accrued employment costs	`EmployeeRelatedLiabilitiesCurrent`	$460.00M	USD	Point-in-time
State and local taxes	`TaxesPayableCurrent`	$138.00M	USD	Point-in-time
State and local taxes	`TaxesPayableCurrent`	$147.00M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$765.00M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$747.00M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$2.93B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$3.56B	USD	Point-in-time
Long-term debt	`LongTermDebtNoncurrent`	$5.39B	USD	Point-in-time
Long-term debt	`LongTermDebtNoncurrent`	$5.24B	USD	Point-in-time
Pension liability, non-current	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$1.22B	USD	Point-in-time
Pension liability, non-current	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$578.00M	USD	Point-in-time
OPEB liability, non-current	`OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent`	$2.89B	USD	Point-in-time
OPEB liability, non-current	`OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent`	$2.38B	USD	Point-in-time
Other non-current liabilities	`OtherLiabilitiesNoncurrent`	$1.44B	USD	Point-in-time
Other non-current liabilities	`OtherLiabilitiesNoncurrent`	$1.26B	USD	Point-in-time
TOTAL LIABILITIES	`Liabilities`	$13.20B	USD	Point-in-time
TOTAL LIABILITIES	`Liabilities`	$13.69B	USD	Point-in-time
Commitments and contingencies (See Note 20)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and contingencies (See Note 20)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Series B Participating Redeemable Preferred Stock - no par value. Authorized, Issued and Outstanding - no shares (2020 - 583,273 shares)	`TemporaryEquityCarryingAmountAttributableToParent`	-	USD	Point-in-time
Series B Participating Redeemable Preferred Stock - no par value. Authorized, Issued and Outstanding - no shares (2020 - 583,273 shares)	`TemporaryEquityCarryingAmountAttributableToParent`	$738.00M	USD	Point-in-time
Common Shares - par value $0.125 per share, Authorized - 1,200,000,000 shares (2020 - 600,000,000 shares); Issued - 506,832,537 shares (2020 - 506,832,537) shares); Outstanding - 500,158,955 shares (2020 - 477,517,372) shares)	`CommonStockValueOutstanding`	$63.00M	USD	Point-in-time
Common Shares - par value $0.125 per share, Authorized - 1,200,000,000 shares (2020 - 600,000,000 shares); Issued - 506,832,537 shares (2020 - 506,832,537) shares); Outstanding - 500,158,955 shares (2020 - 477,517,372) shares)	`CommonStockValueOutstanding`	$63.00M	USD	Point-in-time
Capital in excess of par value of shares	`AdditionalPaidInCapital`	$5.43B	USD	Point-in-time
Capital in excess of par value of shares	`AdditionalPaidInCapital`	$4.89B	USD	Point-in-time
Retained deficit	`RetainedEarningsAccumulatedDeficit`	$-1.00M	USD	Point-in-time
Retained deficit	`RetainedEarningsAccumulatedDeficit`	$-2.99B	USD	Point-in-time
Cost of 6,673,582 common shares in treasury (2020 - 29,315,165 shares)	`TreasuryStockValue`	$82.00M	USD	Point-in-time
Cost of 6,673,582 common shares in treasury (2020 - 29,315,165 shares)	`TreasuryStockValue`	$354.00M	USD	Point-in-time
Accumulated other comprehensive income (loss)	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-319.00M	USD	Point-in-time
Accumulated other comprehensive income (loss)	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-284.00M	USD	Point-in-time
Accumulated other comprehensive income (loss)	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$618.00M	USD	Point-in-time
Accumulated other comprehensive income (loss)	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-133.00M	USD	Point-in-time
Total Cliffs shareholders' equity	`StockholdersEquity`	$5.49B	USD	Point-in-time
Total Cliffs shareholders' equity	`StockholdersEquity`	$2.02B	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	$284.00M	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	$323.00M	USD	Point-in-time
TOTAL EQUITY	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.77B	USD	Point-in-time
TOTAL EQUITY	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.34B	USD	Point-in-time
TOTAL EQUITY	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$424.00M	USD	Point-in-time
TOTAL EQUITY	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$358.00M	USD	Point-in-time
TOTAL LIABILITIES, REDEEMABLE PREFERRED STOCK AND EQUITY	`LiabilitiesAndStockholdersEquity`	$16.77B	USD	Point-in-time
TOTAL LIABILITIES, REDEEMABLE PREFERRED STOCK AND EQUITY	`LiabilitiesAndStockholdersEquity`	$18.98B	USD	Point-in-time

Income Statement 75 line items

Line Item	Tag	Value	Unit	Period
Revenues	`Revenues`	$1.99B	USD	Annual
Revenues	`Revenues`	$20.44B	USD	Annual
Revenues	`Revenues`	$5.35B	USD	Annual
Cost of goods sold	`CostOfGoodsAndServicesSold`	$1.41B	USD	Annual
Cost of goods sold	`CostOfGoodsAndServicesSold`	$5.10B	USD	Annual
Cost of goods sold	`CostOfGoodsAndServicesSold`	$15.91B	USD	Annual
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$113.00M	USD	Annual
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$244.00M	USD	Annual
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$422.00M	USD	Annual
Acquisition-related costs	`BusinessCombinationAcquisitionRelatedCosts`	$7.00M	USD	Annual
Acquisition-related costs	`BusinessCombinationAcquisitionRelatedCosts`	$90.00M	USD	Annual
Acquisition-related costs	`BusinessCombinationAcquisitionRelatedCosts`	$20.00M	USD	Annual
Miscellaneous net	`OtherOperatingIncomeExpenseNet`	$-27.00M	USD	Annual
Miscellaneous net	`OtherOperatingIncomeExpenseNet`	$-80.00M	USD	Annual
Miscellaneous net	`OtherOperatingIncomeExpenseNet`	$-60.00M	USD	Annual
Total operating costs	`CostsAndExpenses`	$1.56B	USD	Annual
Total operating costs	`CostsAndExpenses`	$16.43B	USD	Annual
Total operating costs	`CostsAndExpenses`	$5.50B	USD	Annual
Operating income (loss)	`OperatingIncomeLoss`	$-142.00M	USD	Annual
Operating income (loss)	`OperatingIncomeLoss`	$429.00M	USD	Annual
Operating income (loss)	`OperatingIncomeLoss`	$4.01B	USD	Annual
Interest expense, net	`InterestIncomeExpenseNonoperatingNet`	$-101.00M	USD	Annual
Interest expense, net	`InterestIncomeExpenseNonoperatingNet`	$-238.00M	USD	Annual
Interest expense, net	`InterestIncomeExpenseNonoperatingNet`	$-337.00M	USD	Annual
Gain (loss) on extinguishment of debt	`GainsLossesOnExtinguishmentOfDebt`	$-18.00M	USD	Annual
Gain (loss) on extinguishment of debt	`GainsLossesOnExtinguishmentOfDebt`	$-88.00M	USD	Annual
Gain (loss) on extinguishment of debt	`GainsLossesOnExtinguishmentOfDebt`	$130.00M	USD	Annual
Net periodic benefit credits (costs) other than service cost component	`DefinedBenefitPlanNetPeriodicBenefitCost`	$-210.00M	USD	Annual
Net periodic benefit credits (costs) other than service cost component	`DefinedBenefitPlanNetPeriodicBenefitCost`	$-54.00M	USD	Annual
Net periodic benefit credits (costs) other than service cost component	`DefinedBenefitPlanNetPeriodicBenefitCost`	$1.00M	USD	Annual
Other non-operating income	`OtherNonoperatingIncomeExpense`	$4.00M	USD	Annual
Other non-operating income	`OtherNonoperatingIncomeExpense`	$3.00M	USD	Annual
Other non-operating income	`OtherNonoperatingIncomeExpense`	$6.00M	USD	Annual
Total other expense	`NonoperatingIncomeExpense`	$-51.00M	USD	Annual
Total other expense	`NonoperatingIncomeExpense`	$-209.00M	USD	Annual
Total other expense	`NonoperatingIncomeExpense`	$-116.00M	USD	Annual
Income (loss) from continuing operations before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$3.80B	USD	Annual
Income (loss) from continuing operations before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$-193.00M	USD	Annual
Income (loss) from continuing operations before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$313.00M	USD	Annual
Income tax benefit (expense)	`IncomeTaxExpenseBenefit`	$773.00M	USD	Annual
Income tax benefit (expense)	`IncomeTaxExpenseBenefit`	$18.00M	USD	Annual
Income tax benefit (expense)	`IncomeTaxExpenseBenefit`	$-111.00M	USD	Annual
Income (loss) from continuing operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$3.03B	USD	Annual
Income (loss) from continuing operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$-82.00M	USD	Annual
Income (loss) from continuing operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$295.00M	USD	Annual
Income (loss) from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	$-2.00M	USD	Annual
Income (loss) from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	$1.00M	USD	Annual
Income (loss) from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	$3.00M	USD	Annual
Net income (loss)	`ProfitLoss`	$293.00M	USD	Annual
Net income (loss)	`ProfitLoss`	$3.03B	USD	Annual
Net income (loss)	`ProfitLoss`	$-81.00M	USD	Annual
Income attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$45.00M	USD	Annual
Income attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$41.00M	USD	Annual
Income attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	Annual
Net income (loss) attributable to Cliffs shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$293.00M	USD	Annual
Net income (loss) attributable to Cliffs shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$-122.00M	USD	Annual
Net income (loss) attributable to Cliffs shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$2.99B	USD	Annual
Continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$1.07	USD	Annual
Continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$-0.32	USD	Annual
Continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$5.62	USD	Annual
Discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$0.01	USD	Annual
Discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$-0.01	USD	Annual
Discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	-	USD	Annual
Earnings (loss) per common share attributable to Cliffs common shareholders - basic (in dollars per share)	`EarningsPerShareBasic`	$-0.32	USD	Annual
Earnings (loss) per common share attributable to Cliffs common shareholders - basic (in dollars per share)	`EarningsPerShareBasic`	$5.63	USD	Annual
Earnings (loss) per common share attributable to Cliffs common shareholders - basic (in dollars per share)	`EarningsPerShareBasic`	$1.06	USD	Annual
Continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$5.35	USD	Annual
Continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$1.04	USD	Annual
Continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-0.32	USD	Annual
Discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$0.01	USD	Annual
Discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	-	USD	Annual
Discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$-0.01	USD	Annual
Earnings (loss) per common share attributable to Cliffs common shareholders - diluted (in dollars per share)	`EarningsPerShareDiluted`	$1.03	USD	Annual
Earnings (loss) per common share attributable to Cliffs common shareholders - diluted (in dollars per share)	`EarningsPerShareDiluted`	$-0.32	USD	Annual
Earnings (loss) per common share attributable to Cliffs common shareholders - diluted (in dollars per share)	`EarningsPerShareDiluted`	$5.36	USD	Annual

Cash Flow Statement 86 line items

Line Item	Tag	Value	Unit	Period
Net income (loss)	`ProfitLoss`	$293.00M	USD	Annual
Net income (loss)	`ProfitLoss`	$3.03B	USD	Annual
Net income (loss)	`ProfitLoss`	$-81.00M	USD	Annual
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$897.00M	USD	Annual
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$308.00M	USD	Annual
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$85.00M	USD	Annual
Amortization of inventory step-up	`AmortizationofInventoryStepup`	$161.00M	USD	Annual
Amortization of inventory step-up	`AmortizationofInventoryStepup`	$96.00M	USD	Annual
Amortization of inventory step-up	`AmortizationofInventoryStepup`	-	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$17.00M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-101.00M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$767.00M	USD	Annual
Pension and OPEB costs (credits)	`PensionAndOtherPostretirementBenefitsExpenseReversalOfExpenseNoncash`	$20.00M	USD	Annual
Pension and OPEB costs (credits)	`PensionAndOtherPostretirementBenefitsExpenseReversalOfExpenseNoncash`	$-23.00M	USD	Annual
Pension and OPEB costs (credits)	`PensionAndOtherPostretirementBenefitsExpenseReversalOfExpenseNoncash`	$-103.00M	USD	Annual
Loss (gain) on extinguishment of debt	`GainsLossesOnExtinguishmentOfDebt`	$-18.00M	USD	Annual
Loss (gain) on extinguishment of debt	`GainsLossesOnExtinguishmentOfDebt`	$-88.00M	USD	Annual
Loss (gain) on extinguishment of debt	`GainsLossesOnExtinguishmentOfDebt`	$130.00M	USD	Annual
Other	`OtherNoncashIncomeExpense`	$70.00M	USD	Annual
Other	`OtherNoncashIncomeExpense`	$-93.00M	USD	Annual
Other	`OtherNoncashIncomeExpense`	$-139.00M	USD	Annual
Receivables and other assets	`IncreaseDecreaseInAccountsReceivableAndOtherOperatingAssets`	$-255.00M	USD	Annual
Receivables and other assets	`IncreaseDecreaseInAccountsReceivableAndOtherOperatingAssets`	$42.00M	USD	Annual
Receivables and other assets	`IncreaseDecreaseInAccountsReceivableAndOtherOperatingAssets`	$858.00M	USD	Annual
Inventories	`IncreaseDecreaseInInventories`	$146.00M	USD	Annual
Inventories	`IncreaseDecreaseInInventories`	$136.00M	USD	Annual
Inventories	`IncreaseDecreaseInInventories`	$1.37B	USD	Annual
Pension and OPEB payments and contributions	`PensionAndOtherPostretirementBenefitContributions`	$343.00M	USD	Annual
Pension and OPEB payments and contributions	`PensionAndOtherPostretirementBenefitContributions`	$75.00M	USD	Annual
Pension and OPEB payments and contributions	`PensionAndOtherPostretirementBenefitContributions`	$20.00M	USD	Annual
Payables, accrued expenses and other liabilities	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$6.00M	USD	Annual
Payables, accrued expenses and other liabilities	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$374.00M	USD	Annual
Payables, accrued expenses and other liabilities	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$-57.00M	USD	Annual
Net cash provided (used) by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$2.79B	USD	Annual
Net cash provided (used) by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$-258.00M	USD	Annual
Net cash provided (used) by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$568.00M	USD	Annual
Purchase of property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$656.00M	USD	Annual
Purchase of property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$705.00M	USD	Annual
Purchase of property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$525.00M	USD	Annual
Other investing activities	`PaymentsForProceedsFromOtherInvestingActivities`	$-33.00M	USD	Annual
Other investing activities	`PaymentsForProceedsFromOtherInvestingActivities`	$-10.00M	USD	Annual
Other investing activities	`PaymentsForProceedsFromOtherInvestingActivities`	$-12.00M	USD	Annual
Net cash used by investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-2.04B	USD	Annual
Net cash used by investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-1.38B	USD	Annual
Net cash used by investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-644.00M	USD	Annual
Series B Redeemable Preferred Stock redemption	`PaymentsForRepurchaseOfRedeemablePreferredStock`	-	USD	Annual
Series B Redeemable Preferred Stock redemption	`PaymentsForRepurchaseOfRedeemablePreferredStock`	-	USD	Annual
Series B Redeemable Preferred Stock redemption	`PaymentsForRepurchaseOfRedeemablePreferredStock`	$1.34B	USD	Annual
Proceeds from issuance of common shares	`ProceedsFromIssuanceOfCommonStock`	$322.00M	USD	Annual
Proceeds from issuance of common shares	`ProceedsFromIssuanceOfCommonStock`	-	USD	Annual
Proceeds from issuance of common shares	`ProceedsFromIssuanceOfCommonStock`	-	USD	Annual
Repurchase of common shares	`PaymentsForRepurchaseOfCommonStock`	-	USD	Annual
Repurchase of common shares	`PaymentsForRepurchaseOfCommonStock`	$253.00M	USD	Annual
Repurchase of common shares	`PaymentsForRepurchaseOfCommonStock`	-	USD	Annual
Proceeds from issuance of debt	`ProceedsFromIssuanceOfSeniorLongTermDebt`	$1.00B	USD	Annual
Proceeds from issuance of debt	`ProceedsFromIssuanceOfSeniorLongTermDebt`	$721.00M	USD	Annual
Proceeds from issuance of debt	`ProceedsFromIssuanceOfSeniorLongTermDebt`	$1.76B	USD	Annual
Debt issuance costs	`PaymentsOfDebtIssuanceCosts`	$76.00M	USD	Annual
Debt issuance costs	`PaymentsOfDebtIssuanceCosts`	$20.00M	USD	Annual
Debt issuance costs	`PaymentsOfDebtIssuanceCosts`	$7.00M	USD	Annual
Repayments of debt	`RepaymentsOfLongTermDebt`	$1.02B	USD	Annual
Repayments of debt	`RepaymentsOfLongTermDebt`	$729.00M	USD	Annual
Repayments of debt	`RepaymentsOfLongTermDebt`	$1.37B	USD	Annual
Borrowings under credit facilities	`ProceedsFromLinesOfCredit`	-	USD	Annual
Borrowings under credit facilities	`ProceedsFromLinesOfCredit`	$5.96B	USD	Annual
Borrowings under credit facilities	`ProceedsFromLinesOfCredit`	$2.06B	USD	Annual
Repayments under credit facilities	`RepaymentsOfLinesOfCredit`	-	USD	Annual
Repayments under credit facilities	`RepaymentsOfLinesOfCredit`	$5.89B	USD	Annual
Repayments under credit facilities	`RepaymentsOfLinesOfCredit`	$550.00M	USD	Annual
Other financing activities	`ProceedsFromPaymentsForOtherFinancingActivities`	$-126.00M	USD	Annual
Other financing activities	`ProceedsFromPaymentsForOtherFinancingActivities`	$-130.00M	USD	Annual
Other financing activities	`ProceedsFromPaymentsForOtherFinancingActivities`	$-115.00M	USD	Annual
Net cash provided (used) by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$2.06B	USD	Annual
Net cash provided (used) by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-1.47B	USD	Annual
Net cash provided (used) by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-394.00M	USD	Annual
Net decrease in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-64.00M	USD	Annual
Net decrease in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-241.00M	USD	Annual
Net decrease in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-470.00M	USD	Annual
Cash and cash equivalents at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$353.00M	USD	Point-in-time
Cash and cash equivalents at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$823.00M	USD	Point-in-time
Cash and cash equivalents at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$112.00M	USD	Point-in-time
Cash and cash equivalents at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$48.00M	USD	Point-in-time
Cash and cash equivalents at end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$353.00M	USD	Point-in-time
Cash and cash equivalents at end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$823.00M	USD	Point-in-time
Cash and cash equivalents at end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$112.00M	USD	Point-in-time
Cash and cash equivalents at end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$48.00M	USD	Point-in-time

Stockholders Equity 28 line items

Line Item	Tag	Value	Unit	Period
Balance, beginning of period (in shares)	`CommonStockSharesOutstanding`	477.52M	shares	Point-in-time
Balance, beginning of period (in shares)	`CommonStockSharesOutstanding`	500.16M	shares	Point-in-time
Balance, beginning of period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.77B	USD	Point-in-time
Balance, beginning of period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.34B	USD	Point-in-time
Balance, beginning of period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$424.00M	USD	Point-in-time
Balance, beginning of period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$358.00M	USD	Point-in-time
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$105.00M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$3.78B	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$258.00M	USD	Annual
Stock and other incentive plans	`StockIssuedDuringPeriodValueShareBasedCompensation`	$20.00M	USD	Annual
Stock and other incentive plans	`StockIssuedDuringPeriodValueShareBasedCompensation`	$13.00M	USD	Annual
Stock and other incentive plans	`StockIssuedDuringPeriodValueShareBasedCompensation`	$4.00M	USD	Annual
Common stock repurchased (value)	`StockRepurchasedDuringPeriodValue`	$253.00M	USD	Annual
Common share dividends	`DividendsCommonStock`	$25.00M	USD	Annual
Common share dividends	`DividendsCommonStock`	$75.00M	USD	Annual
Issuance of common shares	`StockIssuedDuringPeriodValueNewIssues`	$322.00M	USD	Annual
Series B Redeemable Preferred Stock redemption	`PreferredStockRedemptionPremium`	$604.00M	USD	Annual
1.500% 2025 Convertible Senior Notes redemption	`StockIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNetOfAdjustments`	$-5.00M	USD	Annual
Net distributions to noncontrolling interests	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$62.00M	USD	Annual
Net distributions to noncontrolling interests	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$61.00M	USD	Annual
Balance, end of period (in shares)	`CommonStockSharesOutstanding`	477.52M	shares	Point-in-time
Balance, end of period (in shares)	`CommonStockSharesOutstanding`	500.16M	shares	Point-in-time
Balance, end of period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.77B	USD	Point-in-time
Balance, end of period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.34B	USD	Point-in-time
Balance, end of period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$424.00M	USD	Point-in-time
Balance, end of period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$358.00M	USD	Point-in-time
Common share dividends (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.27	USD	Annual
Common share dividends (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.06	USD	Annual

Comprehensive Income 24 line items

Line Item	Tag	Value	Unit	Period
Net income (loss)	`ProfitLoss`	$293.00M	USD	Annual
Net income (loss)	`ProfitLoss`	$3.03B	USD	Annual
Net income (loss)	`ProfitLoss`	$-81.00M	USD	Annual
Changes in pension and OPEB, net of tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-684.00M	USD	Annual
Changes in pension and OPEB, net of tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$35.00M	USD	Annual
Changes in pension and OPEB, net of tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-181.00M	USD	Annual
Changes in foreign currency translation	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	-	USD	Annual
Changes in foreign currency translation	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-2.00M	USD	Annual
Changes in foreign currency translation	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$3.00M	USD	Annual
Changes in derivative financial instruments, net of tax	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax`	$69.00M	USD	Annual
Changes in derivative financial instruments, net of tax	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax`	-	USD	Annual
Changes in derivative financial instruments, net of tax	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax`	$2.00M	USD	Annual
Total other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$186.00M	USD	Annual
Total other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$751.00M	USD	Annual
Total other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-35.00M	USD	Annual
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$105.00M	USD	Annual
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$3.78B	USD	Annual
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$258.00M	USD	Annual
Comprehensive income attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$41.00M	USD	Annual
Comprehensive income attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	-	USD	Annual
Comprehensive income attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$45.00M	USD	Annual
Comprehensive income attributable to Cliffs shareholders	`ComprehensiveIncomeNetOfTax`	$64.00M	USD	Annual
Comprehensive income attributable to Cliffs shareholders	`ComprehensiveIncomeNetOfTax`	$258.00M	USD	Annual
Comprehensive income attributable to Cliffs shareholders	`ComprehensiveIncomeNetOfTax`	$3.74B	USD	Annual

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