10-K Filing

CLEVELAND-CLIFFS INC. CIK: 764065 FY 2015

Filing Information

Form Type	10-K
Accession Number	`0000764065-16-000183`
Period End Date	20151231
Filing Date	20160224
Fiscal Year	2015
Fiscal Period	FY
XBRL Instance	clf-20151231.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 110 Income Statement 194 Cash Flow Statement 119 Stockholders Equity 56 Comprehensive Income 32

Balance Sheet 110 line items

Line Item	Tag	Value	Unit	Period
Preferred stock, par value	`PreferredStockParOrStatedValuePerShare`	-	USD	Point-in-time
Preferred stock, par value	`PreferredStockParOrStatedValuePerShare`	-	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$285.20M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$271.30M	USD	Point-in-time
Cumulative Mandatory Convertible	`CumulativeMandatoryConvertible`	0.07	pure	Point-in-time
Accounts receivable, net	`AccountsReceivableNetCurrent`	$40.20M	USD	Point-in-time
Accounts receivable, net	`AccountsReceivableNetCurrent`	$122.70M	USD	Point-in-time
Cumulative Mandatory Convertible	`CumulativeMandatoryConvertible`	0.07	pure	Point-in-time
Inventories	`InventoryNet`	$260.10M	USD	Point-in-time
Inventories	`InventoryNet`	$329.60M	USD	Point-in-time
Supplies and other inventories	`Supplies`	$110.40M	USD	Point-in-time
Supplies and other inventories	`Supplies`	$118.60M	USD	Point-in-time
Common shares, par value	`CommonStockParOrStatedValuePerShare`	$0.12	USD	Point-in-time
Common shares, par value	`CommonStockParOrStatedValuePerShare`	$0.12	USD	Point-in-time
Income tax receivable	`IncomeTaxesReceivable`	$217.60M	USD	Point-in-time
Income tax receivable	`IncomeTaxesReceivable`	$5.70M	USD	Point-in-time
Short-term assets of discontinued operations	`AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$14.90M	USD	Point-in-time
Common shares, authorized (in shares)	`CommonStockSharesAuthorized`	400.00M	shares	Point-in-time
Common shares, authorized (in shares)	`CommonStockSharesAuthorized`	400.00M	shares	Point-in-time
Short-term assets of discontinued operations	`AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$326.90M	USD	Point-in-time
Loans to and accounts receivables from the Canadian Entities	`LoanstoandaccountsreceivablesfromtheCanadianEntities`	$400.00K	USD	Point-in-time
Common shares, issued (in shares)	`CommonStockSharesIssued`	159.55M	shares	Point-in-time
Common shares, issued (in shares)	`CommonStockSharesIssued`	159.55M	shares	Point-in-time
Loans to and accounts receivables from the Canadian Entities	`LoanstoandaccountsreceivablesfromtheCanadianEntities`	$72.90M	USD	Point-in-time
Insurance coverage receivable	`InsuranceSettlementsReceivableCurrent`	$93.50M	USD	Point-in-time
Common shares, outstanding	`CommonStockSharesOutstanding`	153.59M	shares	Point-in-time
Common shares, outstanding	`CommonStockSharesOutstanding`	153.25M	shares	Point-in-time
Insurance coverage receivable	`InsuranceSettlementsReceivableCurrent`	-	USD	Point-in-time
Other current assets	`OtherAssetsCurrent`	$107.70M	USD	Point-in-time
Common shares in treasury	`TreasuryStockShares`	6.30M	shares	Point-in-time
Other current assets	`OtherAssetsCurrent`	$30.30M	USD	Point-in-time
Common shares in treasury	`TreasuryStockShares`	5.95M	shares	Point-in-time
TOTAL CURRENT ASSETS	`AssetsCurrent`	$982.70M	USD	Point-in-time
TOTAL CURRENT ASSETS	`AssetsCurrent`	$1.43B	USD	Point-in-time
PROPERTY, PLANT AND EQUIPMENT, NET	`PropertyPlantAndEquipmentNet`	$1.87B	USD	Point-in-time
PROPERTY, PLANT AND EQUIPMENT, NET	`PropertyPlantAndEquipmentNet`	$1.07B	USD	Point-in-time
PROPERTY, PLANT AND EQUIPMENT, NET	`PropertyPlantAndEquipmentNet`	$1.06B	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxesAndOtherAssetsNoncurrent`	-	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxesAndOtherAssetsNoncurrent`	$175.50M	USD	Point-in-time
Long-term assets of discontinued operations	`DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent`	-	USD	Point-in-time
Long-term assets of discontinued operations	`DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent`	$383.00M	USD	Point-in-time
Other non-current assets	`OtherAssetsNoncurrent`	$92.90M	USD	Point-in-time
Other non-current assets	`OtherAssetsNoncurrent`	$93.80M	USD	Point-in-time
TOTAL OTHER ASSETS	`TotalOtherAssets`	$651.40M	USD	Point-in-time
TOTAL OTHER ASSETS	`TotalOtherAssets`	$93.80M	USD	Point-in-time
TOTAL ASSETS	`Assets`	$13.10B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$2.14B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$3.15B	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$166.10M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$106.30M	USD	Point-in-time
Accrued employment costs	`EmployeeRelatedLiabilitiesCurrent`	$53.00M	USD	Point-in-time
Accrued employment costs	`EmployeeRelatedLiabilitiesCurrent`	$73.80M	USD	Point-in-time
State and local taxes payable	`TaxesPayableCurrent`	$35.20M	USD	Point-in-time
State and local taxes payable	`TaxesPayableCurrent`	$40.70M	USD	Point-in-time
Accrued expenses	`AccruedLiabilitiesCurrent`	$85.70M	USD	Point-in-time
Accrued expenses	`AccruedLiabilitiesCurrent`	$99.40M	USD	Point-in-time
Accrued royalties	`AccruedRoyaltiesCurrent`	$17.30M	USD	Point-in-time
Accrued royalties	`AccruedRoyaltiesCurrent`	$28.50M	USD	Point-in-time
Short-term liabilities of discontinued operations	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$6.90M	USD	Point-in-time
Short-term liabilities of discontinued operations	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$399.40M	USD	Point-in-time
Guarantees	`GuaranteesFairValueDisclosure`	-	USD	Point-in-time
Guarantees	`GuaranteesFairValueDisclosure`	$96.50M	USD	Point-in-time
Insured loss	`LossContingencyAccrualCarryingValueNoncurrent`	-	USD	Point-in-time
Insured loss	`LossContingencyAccrualCarryingValueNoncurrent`	$93.50M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$87.30M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$146.60M	USD	Point-in-time
TOTAL CURRENT LIABILITIES	`LiabilitiesCurrent`	$581.70M	USD	Point-in-time
TOTAL CURRENT LIABILITIES	`LiabilitiesCurrent`	$954.50M	USD	Point-in-time
Pensions	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$246.00M	USD	Point-in-time
Pensions	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$209.70M	USD	Point-in-time
Other postretirement benefits	`OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent`	$22.30M	USD	Point-in-time
Other postretirement benefits	`OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent`	$11.30M	USD	Point-in-time
TOTAL POSTEMPLOYMENT BENEFIT LIABILITIES	`PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent`	$268.30M	USD	Point-in-time
TOTAL POSTEMPLOYMENT BENEFIT LIABILITIES	`PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent`	$221.00M	USD	Point-in-time
ENVIRONMENTAL AND MINE CLOSURE OBLIGATIONS	`MineReclamationAndClosingLiabilityNoncurrent`	$165.60M	USD	Point-in-time
ENVIRONMENTAL AND MINE CLOSURE OBLIGATIONS	`MineReclamationAndClosingLiabilityNoncurrent`	$231.20M	USD	Point-in-time
LONG-TERM DEBT	`LongTermDebtNoncurrent`	$2.70B	USD	Point-in-time
LONG-TERM DEBT	`LongTermDebtNoncurrent`	$2.83B	USD	Point-in-time
LONG-TERM LIABILITIES OF DISCONTINUED OPERATIONS	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent`	$427.50M	USD	Point-in-time
LONG-TERM LIABILITIES OF DISCONTINUED OPERATIONS	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent`	-	USD	Point-in-time
OTHER LIABILITIES	`OtherLiabilitiesNoncurrent`	$239.10M	USD	Point-in-time
OTHER LIABILITIES	`OtherLiabilitiesNoncurrent`	$213.80M	USD	Point-in-time
TOTAL LIABILITIES	`Liabilities`	$3.95B	USD	Point-in-time
TOTAL LIABILITIES	`Liabilities`	$4.88B	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
Preferred Stock - no par value, Class A - 3,000,000 shares authorized, 7 % Series A Mandatory Convertible, Class A, no par value and $1,000 per share liquidation preference (See Note 15), Issued and Outstanding - 731,223 shares (2014 - 731,223)	`PreferredSharesIssuedAndOutstandingValue`	$731.30M	USD	Point-in-time
Preferred Stock - no par value, Class A - 3,000,000 shares authorized, 7 % Series A Mandatory Convertible, Class A, no par value and $1,000 per share liquidation preference (See Note 15), Issued and Outstanding - 731,223 shares (2014 - 731,223)	`PreferredSharesIssuedAndOutstandingValue`	$731.30M	USD	Point-in-time
Common Shares - par value $0.125 per share, Authorized - 400,000,000 shares (2014 - 400,000,000 shares); Issued - 159,546,224 shares (2014 - 159,546,224) shares); Outstanding - 153,591,930 shares (2014 - 153,246,754) shares)	`CommonStockValueOutstanding`	$19.80M	USD	Point-in-time
Common Shares - par value $0.125 per share, Authorized - 400,000,000 shares (2014 - 400,000,000 shares); Issued - 159,546,224 shares (2014 - 159,546,224) shares); Outstanding - 153,591,930 shares (2014 - 153,246,754) shares)	`CommonStockValueOutstanding`	$19.80M	USD	Point-in-time
Capital in excess of par value of shares	`AdditionalPaidInCapital`	$2.31B	USD	Point-in-time
Capital in excess of par value of shares	`AdditionalPaidInCapital`	$2.30B	USD	Point-in-time
Retained deficit	`RetainedEarningsAccumulatedDeficit`	$-4.75B	USD	Point-in-time
Retained deficit	`RetainedEarningsAccumulatedDeficit`	$-3.96B	USD	Point-in-time
Cost of 5,954,294 common shares in treasury (2014 - 6,299,470 shares)	`TreasuryStockValue`	$285.70M	USD	Point-in-time
Cost of 5,954,294 common shares in treasury (2014 - 6,299,470 shares)	`TreasuryStockValue`	$265.00M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-245.80M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-55.60M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-112.90M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-18.00M	USD	Point-in-time
TOTAL CLIFFS SHAREHOLDERS' DEFICIT	`StockholdersEquity`	$-1.43B	USD	Point-in-time
TOTAL CLIFFS SHAREHOLDERS' DEFICIT	`StockholdersEquity`	$-1.98B	USD	Point-in-time
NONCONTROLLING INTEREST (DEFICIT)	`MinorityInterest`	$-303.00M	USD	Point-in-time
NONCONTROLLING INTEREST (DEFICIT)	`MinorityInterest`	$169.80M	USD	Point-in-time
TOTAL DEFICIT	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$-1.73B	USD	Point-in-time
TOTAL DEFICIT	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.88B	USD	Point-in-time
TOTAL DEFICIT	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.76B	USD	Point-in-time
TOTAL DEFICIT	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$-1.81B	USD	Point-in-time
TOTAL LIABILITIES AND DEFICIT	`LiabilitiesAndStockholdersEquity`	$2.14B	USD	Point-in-time
TOTAL LIABILITIES AND DEFICIT	`LiabilitiesAndStockholdersEquity`	$3.15B	USD	Point-in-time

Income Statement 194 line items

Line Item	Tag	Value	Unit	Period
Product	`SalesRevenueGoodsNet`	$3.10B	USD	Annual
Product	`SalesRevenueGoodsNet`	$3.63B	USD	Annual
Product	`SalesRevenueGoodsNet`	$1.83B	USD	Annual
Freight and venture partners' cost reimbursements	`ReimbursementRevenue`	$278.00M	USD	Annual
Freight and venture partners' cost reimbursements	`ReimbursementRevenue`	$180.90M	USD	Annual
LOSS ATTRIBUTABLE TO NONCONTROLLING INTEREST	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest`	$1.11B	USD	Annual
LOSS ATTRIBUTABLE TO NONCONTROLLING INTEREST	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest`	$7.70M	USD	Annual
LOSS ATTRIBUTABLE TO NONCONTROLLING INTEREST	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest`	$66.50M	USD	Annual
Freight and venture partners' cost reimbursements	`ReimbursementRevenue`	$259.00M	USD	Annual
TOTAL REVENUES	`Revenues`	$476.00M	USD	1 Quarter
TOTAL REVENUES	`Revenues`	$3.89B	USD	Annual
TOTAL REVENUES	`Revenues`	$615.50M	USD	1 Quarter
TOTAL REVENUES	`Revenues`	$593.20M	USD	1 Quarter
TOTAL REVENUES	`Revenues`	$446.00M	USD	1 Quarter
TOTAL REVENUES	`Revenues`	$2.01B	USD	Annual
TOTAL REVENUES	`Revenues`	$747.70M	USD	1 Quarter
TOTAL REVENUES	`Revenues`	$3.37B	USD	Annual
TOTAL REVENUES	`Revenues`	$1.03B	USD	1 Quarter
TOTAL REVENUES	`Revenues`	$979.70M	USD	1 Quarter
TOTAL REVENUES	`Revenues`	$498.10M	USD	1 Quarter
COST OF GOODS SOLD AND OPERATING EXPENSES	`CostOfGoodsAndServicesSold`	$2.41B	USD	Annual
COST OF GOODS SOLD AND OPERATING EXPENSES	`CostOfGoodsAndServicesSold`	$2.49B	USD	Annual
COST OF GOODS SOLD AND OPERATING EXPENSES	`CostOfGoodsAndServicesSold`	$1.78B	USD	Annual
SALES MARGIN	`GrossProfit`	$57.30M	USD	1 Quarter
SALES MARGIN	`GrossProfit`	$1.48B	USD	Annual
SALES MARGIN	`GrossProfit`	$183.50M	USD	1 Quarter
SALES MARGIN	`GrossProfit`	$885.70M	USD	Annual
SALES MARGIN	`GrossProfit`	$236.50M	USD	Annual
SALES MARGIN	`GrossProfit`	$256.20M	USD	1 Quarter
SALES MARGIN	`GrossProfit`	$43.30M	USD	1 Quarter
SALES MARGIN	`GrossProfit`	$80.80M	USD	1 Quarter
SALES MARGIN	`GrossProfit`	$190.00M	USD	1 Quarter
SALES MARGIN	`GrossProfit`	$55.10M	USD	1 Quarter
SALES MARGIN	`GrossProfit`	$256.00M	USD	1 Quarter
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$154.70M	USD	Annual
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$163.80M	USD	Annual
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$110.00M	USD	Annual
Impairment of goodwill and other long-lived assets	`AssetImpairmentCharges`	$3.30M	USD	Annual
Impairment of goodwill and other long-lived assets	`AssetImpairmentCharges`	$14.30M	USD	Annual
Impairment of goodwill and other long-lived assets	`AssetImpairmentCharges`	$635.50M	USD	Annual
Miscellaneous - net	`OtherOperatingIncomeExpenseNet`	$34.60M	USD	Annual
Miscellaneous - net	`OtherOperatingIncomeExpenseNet`	$74.00M	USD	Annual
Miscellaneous - net	`OtherOperatingIncomeExpenseNet`	$28.10M	USD	Annual
Other operating expense	`OperatingExpenses`	$104.10M	USD	Annual
Other operating expense	`OperatingExpenses`	$755.60M	USD	Annual
Other operating expense	`OperatingExpenses`	$85.20M	USD	Annual
OPERATING INCOME	`OperatingIncomeLoss`	$1.38B	USD	Annual
OPERATING INCOME	`OperatingIncomeLoss`	$151.30M	USD	Annual
OPERATING INCOME	`OperatingIncomeLoss`	$130.10M	USD	Annual
Interest expense, net	`InterestIncomeExpenseNet`	$-176.70M	USD	Annual
Interest expense, net	`InterestIncomeExpenseNet`	$-186.40M	USD	Annual
Interest expense, net	`InterestIncomeExpenseNet`	$-228.50M	USD	Annual
Gain on extinguishment of debt	`GainsLossesOnExtinguishmentOfDebt`	-	USD	Annual
Gain on extinguishment of debt	`GainsLossesOnExtinguishmentOfDebt`	$16.20M	USD	Annual
Gain on extinguishment of debt	`GainsLossesOnExtinguishmentOfDebt`	$392.90M	USD	Annual
Other non-operating income (expense)	`OtherNonoperatingIncomeExpense`	$-3.00M	USD	Annual
Other non-operating income (expense)	`OtherNonoperatingIncomeExpense`	$-2.60M	USD	Annual
Other non-operating income (expense)	`OtherNonoperatingIncomeExpense`	$10.70M	USD	Annual
TOTAL OTHER INCOME (EXPENSE)	`NonoperatingIncomeExpense`	$-149.80M	USD	Annual
TOTAL OTHER INCOME (EXPENSE)	`NonoperatingIncomeExpense`	$161.80M	USD	Annual
TOTAL OTHER INCOME (EXPENSE)	`NonoperatingIncomeExpense`	$-189.40M	USD	Annual
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES AND EQUITY LOSS FROM VENTURES	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$1.19B	USD	Annual
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES AND EQUITY LOSS FROM VENTURES	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$-19.70M	USD	Annual
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES AND EQUITY LOSS FROM VENTURES	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$313.10M	USD	Annual
INCOME TAX BENEFIT (EXPENSE)	`IncomeTaxExpenseBenefit`	$-86.00M	USD	Annual
INCOME TAX BENEFIT (EXPENSE)	`IncomeTaxExpenseBenefit`	$237.60M	USD	Annual
INCOME TAX BENEFIT (EXPENSE)	`IncomeTaxExpenseBenefit`	$169.30M	USD	Annual
INCOME TAX BENEFIT (EXPENSE)	`IncomeTaxExpenseBenefit`	$-207.30M	USD	1 Quarter
EQUITY LOSS FROM VENTURES, net of tax	`IncomeLossFromEquityMethodInvestments`	$-74.40M	USD	Annual
EQUITY LOSS FROM VENTURES, net of tax	`IncomeLossFromEquityMethodInvestments`	$-9.90M	USD	Annual
EQUITY LOSS FROM VENTURES, net of tax	`IncomeLossFromEquityMethodInvestments`	$-100.00K	USD	Annual
INCOME FROM CONTINUING OPERATIONS	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$-34.80M	USD	1 Quarter
INCOME FROM CONTINUING OPERATIONS	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$143.70M	USD	Annual
INCOME FROM CONTINUING OPERATIONS	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$878.90M	USD	Annual
INCOME FROM CONTINUING OPERATIONS	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$-274.20M	USD	1 Quarter
INCOME FROM CONTINUING OPERATIONS	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$56.40M	USD	Annual
INCOME FROM CONTINUING OPERATIONS	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$166.80M	USD	1 Quarter
INCOME FROM CONTINUING OPERATIONS	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$170.00M	USD	1 Quarter
INCOME FROM CONTINUING OPERATIONS	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$49.90M	USD	1 Quarter
INCOME FROM CONTINUING OPERATIONS	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$90.90M	USD	1 Quarter
INCOME FROM CONTINUING OPERATIONS	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$69.70M	USD	1 Quarter
INCOME FROM CONTINUING OPERATIONS	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$-38.20M	USD	1 Quarter
LOSS FROM DISCONTINUED OPERATIONS, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$-517.10M	USD	Annual
LOSS FROM DISCONTINUED OPERATIONS, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$-8.37B	USD	Annual
LOSS FROM DISCONTINUED OPERATIONS, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$-892.10M	USD	Annual
NET INCOME (LOSS)	`ProfitLoss`	$-8.31B	USD	Annual
NET INCOME (LOSS)	`ProfitLoss`	$-748.40M	USD	Annual
NET INCOME (LOSS)	`ProfitLoss`	$361.80M	USD	Annual
LOSS (INCOME) ATTRIBUTABLE TO NONCONTROLLING INTEREST (Year Ended December 31, 2015 - Loss of $7.7 million related to Discontinued Operations, Year Ended December 31, 2014 - Loss of $1,113.3 million and Year Ended December 31, 2013 - Loss of $66.5 million related to Discontinued Operations)	`NetIncomeLossAttributableToNoncontrollingInterest`	$-1.09B	USD	Annual
LOSS (INCOME) ATTRIBUTABLE TO NONCONTROLLING INTEREST (Year Ended December 31, 2015 - Loss of $7.7 million related to Discontinued Operations, Year Ended December 31, 2014 - Loss of $1,113.3 million and Year Ended December 31, 2013 - Loss of $66.5 million related to Discontinued Operations)	`NetIncomeLossAttributableToNoncontrollingInterest`	$-51.70M	USD	Annual
LOSS (INCOME) ATTRIBUTABLE TO NONCONTROLLING INTEREST (Year Ended December 31, 2015 - Loss of $7.7 million related to Discontinued Operations, Year Ended December 31, 2014 - Loss of $1,113.3 million and Year Ended December 31, 2013 - Loss of $66.5 million related to Discontinued Operations)	`NetIncomeLossAttributableToNoncontrollingInterest`	$900.00K	USD	Annual
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$-5.88B	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$-1.29B	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$-7.22B	USD	Annual
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$-749.30M	USD	Annual
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$413.50M	USD	Annual
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$10.90M	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$10.60M	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$-759.80M	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$-70.30M	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$60.20M	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$-60.30M	USD	1 Quarter
PREFERRED STOCK DIVIDENDS	`DividendsPreferredStock`	$48.70M	USD	Annual
PREFERRED STOCK DIVIDENDS	`DividendsPreferredStock`	$38.40M	USD	Annual
PREFERRED STOCK DIVIDENDS	`DividendsPreferredStock`	$51.20M	USD	Annual
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS COMMON SHAREHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$-7.28B	USD	Annual
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS COMMON SHAREHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$-15.00M	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS COMMON SHAREHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$364.80M	USD	Annual
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS COMMON SHAREHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$-1.30B	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS COMMON SHAREHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$-772.60M	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS COMMON SHAREHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$-787.70M	USD	Annual
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS COMMON SHAREHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$-60.30M	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS COMMON SHAREHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$-83.10M	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS COMMON SHAREHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$-5.89B	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS COMMON SHAREHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$-1.90M	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS COMMON SHAREHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$60.20M	USD	1 Quarter
Continuing operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.49	USD	1 Quarter
Continuing operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.19	USD	1 Quarter
Continuing operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$-0.14	USD	Annual
Continuing operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$-0.24	USD	1 Quarter
Continuing operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$1.00	USD	1 Quarter
Continuing operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.37	USD	1 Quarter
Continuing operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$-1.89	USD	1 Quarter
Continuing operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.63	USD	Annual
Continuing operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$1.02	USD	1 Quarter
Continuing operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$5.37	USD	Annual
Continuing operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$-0.28	USD	1 Quarter
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$0.67	USD	1 Quarter
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$-0.50	USD	1 Quarter
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$-5.77	USD	Annual
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$-36.60	USD	1 Quarter
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$-9.48	USD	1 Quarter
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$-6.06	USD	1 Quarter
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$-47.38	USD	Annual
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$-0.92	USD	1 Quarter
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$-0.29	USD	1 Quarter
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$-0.15	USD	1 Quarter
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$-2.97	USD	Annual
Earnings (loss) per Common Share Attributable to Cliffs Common Shareholders - Basic:	`EarningsPerShareBasic`	$0.39	USD	1 Quarter
Earnings (loss) per Common Share Attributable to Cliffs Common Shareholders - Basic:	`EarningsPerShareBasic`	$-0.39	USD	1 Quarter
Earnings (loss) per Common Share Attributable to Cliffs Common Shareholders - Basic:	`EarningsPerShareBasic`	$-5.14	USD	Annual
Earnings (loss) per Common Share Attributable to Cliffs Common Shareholders - Basic:	`EarningsPerShareBasic`	$2.40	USD	Annual
Earnings (loss) per Common Share Attributable to Cliffs Common Shareholders - Basic:	`EarningsPerShareBasic`	$-0.01	USD	1 Quarter
Earnings (loss) per Common Share Attributable to Cliffs Common Shareholders - Basic:	`EarningsPerShareBasic`	$-38.49	USD	1 Quarter
Earnings (loss) per Common Share Attributable to Cliffs Common Shareholders - Basic:	`EarningsPerShareBasic`	$-0.10	USD	1 Quarter
Earnings (loss) per Common Share Attributable to Cliffs Common Shareholders - Basic:	`EarningsPerShareBasic`	$-5.04	USD	1 Quarter
Earnings (loss) per Common Share Attributable to Cliffs Common Shareholders - Basic:	`EarningsPerShareBasic`	$-0.55	USD	1 Quarter
Earnings (loss) per Common Share Attributable to Cliffs Common Shareholders - Basic:	`EarningsPerShareBasic`	$-8.48	USD	1 Quarter
Earnings (loss) per Common Share Attributable to Cliffs Common Shareholders - Basic:	`EarningsPerShareBasic`	$-47.52	USD	Annual
Continuing operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-0.28	USD	1 Quarter
Continuing operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.19	USD	1 Quarter
Continuing operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.94	USD	1 Quarter
Continuing operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.48	USD	1 Quarter
Continuing operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.94	USD	1 Quarter
Continuing operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-0.24	USD	1 Quarter
Continuing operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.63	USD	Annual
Continuing operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-1.89	USD	1 Quarter
Continuing operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$4.95	USD	Annual
Continuing operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.37	USD	1 Quarter
Continuing operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-0.14	USD	Annual
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$0.67	USD	1 Quarter
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$-36.60	USD	1 Quarter
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$-0.29	USD	1 Quarter
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$-8.13	USD	1 Quarter
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$-0.15	USD	1 Quarter
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$-0.91	USD	1 Quarter
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$-2.58	USD	Annual
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$-47.38	USD	Annual
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$-5.20	USD	1 Quarter
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$-0.50	USD	1 Quarter
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$-5.76	USD	Annual
Earnings (loss) per Common Share Attributable to Cliffs Common Shareholders - Diluted:	`EarningsPerShareDiluted`	$-7.19	USD	1 Quarter
Earnings (loss) per Common Share Attributable to Cliffs Common Shareholders - Diluted:	`EarningsPerShareDiluted`	$-0.54	USD	1 Quarter
Earnings (loss) per Common Share Attributable to Cliffs Common Shareholders - Diluted:	`EarningsPerShareDiluted`	$-4.26	USD	1 Quarter
Earnings (loss) per Common Share Attributable to Cliffs Common Shareholders - Diluted:	`EarningsPerShareDiluted`	$-38.49	USD	1 Quarter
Earnings (loss) per Common Share Attributable to Cliffs Common Shareholders - Diluted:	`EarningsPerShareDiluted`	$-5.13	USD	Annual
Earnings (loss) per Common Share Attributable to Cliffs Common Shareholders - Diluted:	`EarningsPerShareDiluted`	$-47.52	USD	Annual
Earnings (loss) per Common Share Attributable to Cliffs Common Shareholders - Diluted:	`EarningsPerShareDiluted`	$2.37	USD	Annual
Earnings (loss) per Common Share Attributable to Cliffs Common Shareholders - Diluted:	`EarningsPerShareDiluted`	$-0.02	USD	1 Quarter
Earnings (loss) per Common Share Attributable to Cliffs Common Shareholders - Diluted:	`EarningsPerShareDiluted`	$-0.10	USD	1 Quarter
Earnings (loss) per Common Share Attributable to Cliffs Common Shareholders - Diluted:	`EarningsPerShareDiluted`	$-0.39	USD	1 Quarter
Earnings (loss) per Common Share Attributable to Cliffs Common Shareholders - Diluted:	`EarningsPerShareDiluted`	$0.39	USD	1 Quarter
Basic	`WeightedAverageNumberOfSharesOutstandingBasic`	151.73M	shares	Annual
Basic	`WeightedAverageNumberOfSharesOutstandingBasic`	153.10M	shares	Annual
Basic	`WeightedAverageNumberOfSharesOutstandingBasic`	153.23M	shares	Annual
Diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	174.32M	shares	Annual
Diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	153.10M	shares	Annual
Diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	153.60M	shares	Annual
CASH DIVIDENDS DECLARED PER DEPOSITARY SHARE	`PreferredStockDividendsPerShareDeclared`	$1.32	USD	Annual
CASH DIVIDENDS DECLARED PER DEPOSITARY SHARE	`PreferredStockDividendsPerShareDeclared`	$1.76	USD	Annual
CASH DIVIDENDS DECLARED PER DEPOSITARY SHARE	`PreferredStockDividendsPerShareDeclared`	$1.66	USD	Annual
CASH DIVIDENDS DECLARED PER COMMON SHARE	`CommonStockDividendsPerShareDeclared`	$0.60	USD	Annual
CASH DIVIDENDS DECLARED PER COMMON SHARE	`CommonStockDividendsPerShareDeclared`	-	USD	Annual
CASH DIVIDENDS DECLARED PER COMMON SHARE	`CommonStockDividendsPerShareDeclared`	$0.60	USD	Annual

Cash Flow Statement 119 line items

Line Item	Tag	Value	Unit	Period
Net income (loss)	`ProfitLoss`	$-8.31B	USD	Annual
Net income (loss)	`ProfitLoss`	$-748.40M	USD	Annual
Net income (loss)	`ProfitLoss`	$361.80M	USD	Annual
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$593.30M	USD	Annual
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$504.00M	USD	Annual
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$134.00M	USD	Annual
Impairment of goodwill and other long-lived assets	`AssetImpairmentChargesCashFlows`	$9.03B	USD	Annual
Impairment of goodwill and other long-lived assets	`AssetImpairmentChargesCashFlows`	$250.80M	USD	Annual
Impairment of goodwill and other long-lived assets	`AssetImpairmentChargesCashFlows`	$76.60M	USD	Annual
Equity loss in ventures (net of tax)	`IncomeLossEquityMethodInvestmentCashFlows`	$100.00K	USD	Annual
Equity loss in ventures (net of tax)	`IncomeLossEquityMethodInvestmentCashFlows`	$-9.90M	USD	Annual
Equity loss in ventures (net of tax)	`IncomeLossEquityMethodInvestmentCashFlows`	$-74.40M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-1.15B	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-138.10M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$159.80M	USD	Annual
Changes in deferred revenue and below-market sales contracts	`IncreaseDecreaseInDeferredRevenueAndBelowMarketSalesContracts`	$-18.00M	USD	Annual
Changes in deferred revenue and below-market sales contracts	`IncreaseDecreaseInDeferredRevenueAndBelowMarketSalesContracts`	$-52.80M	USD	Annual
Changes in deferred revenue and below-market sales contracts	`IncreaseDecreaseInDeferredRevenueAndBelowMarketSalesContracts`	$-42.60M	USD	Annual
Gain on extinguishment of debt	`Gainonextinguishmentofdebtcashflows`	-	USD	Annual
Gain on extinguishment of debt	`Gainonextinguishmentofdebtcashflows`	$-392.90M	USD	Annual
Gain on extinguishment of debt	`Gainonextinguishmentofdebtcashflows`	$-16.20M	USD	Annual
Loss on deconsolidation, net of cash deconsolidated	`LossonDeconsolidationnetofcashdeconsolidated`	-	USD	Annual
Loss on deconsolidation, net of cash deconsolidated	`LossonDeconsolidationnetofcashdeconsolidated`	$-668.30M	USD	Annual
Loss on deconsolidation, net of cash deconsolidated	`LossonDeconsolidationnetofcashdeconsolidated`	-	USD	Annual
Loss (gain) on sale of North American Coal mines	`LossgainonsaleofNorthAmericanCoalmines`	-	USD	Annual
Loss (gain) on sale of North American Coal mines	`LossgainonsaleofNorthAmericanCoalmines`	$419.60M	USD	Annual
Loss (gain) on sale of North American Coal mines	`LossgainonsaleofNorthAmericanCoalmines`	$-9.30M	USD	Annual
Other	`OtherNoncashIncomeExpense`	$21.50M	USD	Annual
Other	`OtherNoncashIncomeExpense`	$3.30M	USD	Annual
Other	`OtherNoncashIncomeExpense`	$-113.10M	USD	Annual
Receivables and other assets	`IncreaseDecreaseInAccountsReceivableAndOtherOperatingAssets`	$-138.80M	USD	Annual
Receivables and other assets	`IncreaseDecreaseInAccountsReceivableAndOtherOperatingAssets`	$-369.10M	USD	Annual
Receivables and other assets	`IncreaseDecreaseInAccountsReceivableAndOtherOperatingAssets`	$82.80M	USD	Annual
Product inventories	`IncreaseDecreaseInInventories`	$-37.80M	USD	Annual
Product inventories	`IncreaseDecreaseInInventories`	$-30.80M	USD	Annual
Product inventories	`IncreaseDecreaseInInventories`	$62.00M	USD	Annual
Payables and accrued expenses	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$-38.30M	USD	Annual
Payables and accrued expenses	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$-109.80M	USD	Annual
Payables and accrued expenses	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$-227.70M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$37.90M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$1.15B	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$358.90M	USD	Annual
Purchase of property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$284.10M	USD	Annual
Purchase of property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$80.80M	USD	Annual
Purchase of property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$861.60M	USD	Annual
Investments in DIP and prepetition financing	`InvestmentsinDIPandprepetitionfinancing`	$-14.00M	USD	Annual
Investments in DIP and prepetition financing	`InvestmentsinDIPandprepetitionfinancing`	-	USD	Annual
Investments in DIP and prepetition financing	`InvestmentsinDIPandprepetitionfinancing`	-	USD	Annual
Proceeds (uses) from sale of North American Coal mines	`ProceedsfromsaleofNorthAmericanCoalmines`	-	USD	Annual
Proceeds (uses) from sale of North American Coal mines	`ProceedsfromsaleofNorthAmericanCoalmines`	$155.00M	USD	Annual
Proceeds (uses) from sale of North American Coal mines	`ProceedsfromsaleofNorthAmericanCoalmines`	$-15.20M	USD	Annual
Other investing activities	`PaymentsForProceedsFromOtherInvestingActivities`	$-25.50M	USD	Annual
Other investing activities	`PaymentsForProceedsFromOtherInvestingActivities`	$-6.80M	USD	Annual
Other investing activities	`PaymentsForProceedsFromOtherInvestingActivities`	$-50.30M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-103.60M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-811.30M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-103.20M	USD	Annual
Net proceeds from issuance of Series A, Mandatory Convertible Preferred Stock, Class A	`ProceedsFromIssuanceOfConvertiblePreferredStock`	-	USD	Annual
Net proceeds from issuance of Series A, Mandatory Convertible Preferred Stock, Class A	`ProceedsFromIssuanceOfConvertiblePreferredStock`	$709.40M	USD	Annual
Net proceeds from issuance of Series A, Mandatory Convertible Preferred Stock, Class A	`ProceedsFromIssuanceOfConvertiblePreferredStock`	-	USD	Annual
Net proceeds from issuance of common shares	`ProceedsFromIssuanceOfCommonStock`	-	USD	Annual
Net proceeds from issuance of common shares	`ProceedsFromIssuanceOfCommonStock`	$285.30M	USD	Annual
Net proceeds from issuance of common shares	`ProceedsFromIssuanceOfCommonStock`	-	USD	Annual
Proceeds from first lien notes offering	`ProceedsFromIssuanceOfSeniorLongTermDebt`	-	USD	Annual
Proceeds from first lien notes offering	`ProceedsFromIssuanceOfSeniorLongTermDebt`	$503.50M	USD	Annual
Proceeds from first lien notes offering	`ProceedsFromIssuanceOfSeniorLongTermDebt`	-	USD	Annual
Debt issuance costs	`PaymentsOfDebtIssuanceCosts`	-	USD	Annual
Debt issuance costs	`PaymentsOfDebtIssuanceCosts`	$33.60M	USD	Annual
Debt issuance costs	`PaymentsOfDebtIssuanceCosts`	$9.00M	USD	Annual
Repayment of term loan	`RepaymentsOfOtherLongTermDebt`	-	USD	Annual
Repayment of term loan	`RepaymentsOfOtherLongTermDebt`	$847.10M	USD	Annual
Repayment of term loan	`RepaymentsOfOtherLongTermDebt`	-	USD	Annual
Borrowings under credit facilities	`ProceedsFromLongTermLinesOfCredit`	$670.50M	USD	Annual
Borrowings under credit facilities	`ProceedsFromLongTermLinesOfCredit`	$309.80M	USD	Annual
Borrowings under credit facilities	`ProceedsFromLongTermLinesOfCredit`	$1.22B	USD	Annual
Repayment under credit facilities	`RepaymentsOfLongTermLinesOfCredit`	$1.22B	USD	Annual
Repayment under credit facilities	`RepaymentsOfLongTermLinesOfCredit`	$995.50M	USD	Annual
Repayment under credit facilities	`RepaymentsOfLongTermLinesOfCredit`	$309.80M	USD	Annual
Proceeds from equipment loans	`Proceedsfromequipmentloans`	$164.80M	USD	Annual
Proceeds from equipment loans	`Proceedsfromequipmentloans`	-	USD	Annual
Proceeds from equipment loans	`Proceedsfromequipmentloans`	-	USD	Annual
Repayments of equipment loans	`Repaymentsofequipmentloans`	$20.90M	USD	Annual
Repayments of equipment loans	`Repaymentsofequipmentloans`	$45.40M	USD	Annual
Repayments of equipment loans	`Repaymentsofequipmentloans`	$3.00M	USD	Annual
Repurchase of debt	`GainLossOnRepurchaseOfDebtInstrument`	$225.90M	USD	Annual
Repurchase of debt	`GainLossOnRepurchaseOfDebtInstrument`	-	USD	Annual
Repurchase of debt	`GainLossOnRepurchaseOfDebtInstrument`	$28.80M	USD	Annual
Contributions (to)/by joint ventures, net	`ProceedsFromContributionsFromAffiliates`	$100.00K	USD	Annual
Contributions (to)/by joint ventures, net	`ProceedsFromContributionsFromAffiliates`	$23.30M	USD	Annual
Contributions (to)/by joint ventures, net	`ProceedsFromContributionsFromAffiliates`	$-25.70M	USD	Annual
Distributions of partnership equity	`PaymentsOfDistributionsToAffiliates`	$40.60M	USD	Annual
Distributions of partnership equity	`PaymentsOfDistributionsToAffiliates`	-	USD	Annual
Distributions of partnership equity	`PaymentsOfDistributionsToAffiliates`	-	USD	Annual
Common stock dividends	`PaymentsOfDividendsCommonStock`	-	USD	Annual
Common stock dividends	`PaymentsOfDividendsCommonStock`	$91.90M	USD	Annual
Common stock dividends	`PaymentsOfDividendsCommonStock`	$92.50M	USD	Annual
Preferred stock dividends	`PaymentsOfDividendsPreferredStockAndPreferenceStock`	$51.20M	USD	Annual
Preferred stock dividends	`PaymentsOfDividendsPreferredStockAndPreferenceStock`	$35.70M	USD	Annual
Preferred stock dividends	`PaymentsOfDividendsPreferredStockAndPreferenceStock`	$51.20M	USD	Annual
Other financing activities	`ProceedsFromPaymentsForOtherFinancingActivities`	$-60.20M	USD	Annual
Other financing activities	`ProceedsFromPaymentsForOtherFinancingActivities`	$-52.00M	USD	Annual
Other financing activities	`ProceedsFromPaymentsForOtherFinancingActivities`	$-45.90M	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-171.90M	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-288.30M	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$61.00M	USD	Annual
EFFECT OF EXCHANGE RATE CHANGES ON CASH	`EffectOfExchangeRateOnCashAndCashEquivalents`	$-1.40M	USD	Annual
EFFECT OF EXCHANGE RATE CHANGES ON CASH	`EffectOfExchangeRateOnCashAndCashEquivalents`	$-22.40M	USD	Annual
EFFECT OF EXCHANGE RATE CHANGES ON CASH	`EffectOfExchangeRateOnCashAndCashEquivalents`	$-11.60M	USD	Annual
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$140.30M	USD	Annual
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$-5.70M	USD	Annual
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$-44.60M	USD	Annual
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	`CashAndCashEquivalentsAtCarryingValueIncludingAssetsHeldForSale`	$290.90M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	`CashAndCashEquivalentsAtCarryingValueIncludingAssetsHeldForSale`	$335.50M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	`CashAndCashEquivalentsAtCarryingValueIncludingAssetsHeldForSale`	$285.20M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	`CashAndCashEquivalentsAtCarryingValueIncludingAssetsHeldForSale`	$195.20M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT END OF PERIOD	`CashAndCashEquivalentsAtCarryingValueIncludingAssetsHeldForSale`	$290.90M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT END OF PERIOD	`CashAndCashEquivalentsAtCarryingValueIncludingAssetsHeldForSale`	$335.50M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT END OF PERIOD	`CashAndCashEquivalentsAtCarryingValueIncludingAssetsHeldForSale`	$285.20M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT END OF PERIOD	`CashAndCashEquivalentsAtCarryingValueIncludingAssetsHeldForSale`	$195.20M	USD	Point-in-time

Stockholders Equity 56 line items

Line Item	Tag	Value	Unit	Period
Common stock dividends per share	`CommonStockDividendsPerShareCashPaid`	-	USD	Annual
Common stock dividends per share	`CommonStockDividendsPerShareCashPaid`	$0.60	USD	Annual
Common stock dividends per share	`CommonStockDividendsPerShareCashPaid`	$0.60	USD	Annual
Preferred stock dividends per share	`PreferredStockDividendsPerShareCashPaid`	$1.32	USD	Annual
Preferred stock dividends per share	`PreferredStockDividendsPerShareCashPaid`	$1.66	USD	Annual
Preferred stock dividends per share	`PreferredStockDividendsPerShareCashPaid`	$1.76	USD	Annual
Balance, beginning of period (in shares)	`CommonStockSharesOutstanding`	153.59M	shares	Point-in-time
Balance, beginning of period (in shares)	`CommonStockSharesOutstanding`	153.25M	shares	Point-in-time
Balance, beginning of period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$-1.73B	USD	Point-in-time
Balance, beginning of period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.88B	USD	Point-in-time
Balance, beginning of period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.76B	USD	Point-in-time
Balance, beginning of period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$-1.81B	USD	Point-in-time
NET INCOME (LOSS)	`ProfitLoss`	$-8.31B	USD	Annual
NET INCOME (LOSS)	`ProfitLoss`	$-748.40M	USD	Annual
NET INCOME (LOSS)	`ProfitLoss`	$361.80M	USD	Annual
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-7.36B	USD	Annual
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-521.50M	USD	Annual
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$356.20M	USD	Annual
Other Comprehensive Income (Loss), Net of Tax	`OtherComprehensiveIncomeLossNetOfTax`	$-137.70M	USD	Annual
Other Comprehensive Income (Loss), Net of Tax	`OtherComprehensiveIncomeLossNetOfTax`	$223.20M	USD	Annual
Other Comprehensive Income (Loss), Net of Tax	`OtherComprehensiveIncomeLossNetOfTax`	$-26.80M	USD	Annual
Pension and OPEB liability, net of tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$91.00M	USD	Annual
Pension and OPEB liability, net of tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-45.20M	USD	Annual
Pension and OPEB liability, net of tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-208.30M	USD	Annual
Unrealized net loss on marketable securities, net of tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$3.10M	USD	Annual
Unrealized net loss on marketable securities, net of tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$1.70M	USD	Annual
Unrealized net loss on marketable securities, net of tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-7.20M	USD	Annual
Total comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-8.45B	USD	Annual
Total comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-525.20M	USD	Annual
Total comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$335.00M	USD	Annual
Stock Issued During Period, Value, New Issues	`StockIssuedDuringPeriodValueNewIssues`	$-285.30M	USD	Annual
Undistributed losses to noncontrolling interest to subsidiary	`UndistributedEarningsLossesRelatedToNoncontrollingInterests`	$-200.00K	USD	Annual
Undistributed losses to noncontrolling interest to subsidiary	`UndistributedEarningsLossesRelatedToNoncontrollingInterests`	$-25.50M	USD	Annual
Undistributed losses to noncontrolling interest to subsidiary	`UndistributedEarningsLossesRelatedToNoncontrollingInterests`	$17.00M	USD	Annual
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$-51.70M	USD	Annual
Deconsolidation, Gain (Loss), Amount	`DeconsolidationGainOrLossAmount`	$-528.20M	USD	Annual
Capital contribution by noncontrolling interest to subsidiary	`ProceedsFromMinorityShareholders`	$-200.00K	USD	Annual
Capital contribution by noncontrolling interest to subsidiary	`ProceedsFromMinorityShareholders`	$100.00K	USD	Annual
Capital contribution by noncontrolling interest to subsidiary	`ProceedsFromMinorityShareholders`	$-5.20M	USD	Annual
Stock Issued During Period, Value, Acquisitions	`StockIssuedDuringPeriodValueAcquisitions`	$-102.10M	USD	Annual
Stock and other incentive plans	`StockIssuedDuringPeriodValueShareBasedCompensation`	$9.80M	USD	Annual
Stock and other incentive plans	`StockIssuedDuringPeriodValueShareBasedCompensation`	$100.00K	USD	Annual
Stock and other incentive plans	`StockIssuedDuringPeriodValueShareBasedCompensation`	$14.20M	USD	Annual
Common stock dividends ($0.60 per share)	`DividendsCommonStock`	$91.90M	USD	Annual
Common stock dividends ($0.60 per share)	`DividendsCommonStock`	$92.50M	USD	Annual
Preferred stock dividends ($1.66 per depositary share)	`DividendsPreferredStock`	$48.70M	USD	Annual
Preferred stock dividends ($1.66 per depositary share)	`DividendsPreferredStock`	$38.40M	USD	Annual
Preferred stock dividends ($1.66 per depositary share)	`DividendsPreferredStock`	$51.20M	USD	Annual
Preferred Stock Dividends	`PreferredStockDividends`	$51.30M	USD	Annual
Preferred Stock Dividends	`PreferredStockDividends`	$38.40M	USD	Annual
Balance, end of period (in shares)	`CommonStockSharesOutstanding`	153.59M	shares	Point-in-time
Balance, end of period (in shares)	`CommonStockSharesOutstanding`	153.25M	shares	Point-in-time
Balance, end of period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$-1.73B	USD	Point-in-time
Balance, end of period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.88B	USD	Point-in-time
Balance, end of period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.76B	USD	Point-in-time
Balance, end of period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$-1.81B	USD	Point-in-time

Comprehensive Income 32 line items

Line Item	Tag	Value	Unit	Period
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$-5.88B	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$-1.29B	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$-7.22B	USD	Annual
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$-749.30M	USD	Annual
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$413.50M	USD	Annual
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$10.90M	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$10.60M	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$-759.80M	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$-70.30M	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$60.20M	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$-60.30M	USD	1 Quarter
Pension and OPEB liability, net of tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$91.00M	USD	Annual
Pension and OPEB liability, net of tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-45.20M	USD	Annual
Pension and OPEB liability, net of tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-208.30M	USD	Annual
Unrealized net gain (loss) on marketable securities, net of tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$3.10M	USD	Annual
Unrealized net gain (loss) on marketable securities, net of tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$1.70M	USD	Annual
Unrealized net gain (loss) on marketable securities, net of tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-7.20M	USD	Annual
Unrealized net gain (loss) on foreign currency translation	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-208.60M	USD	Annual
Unrealized net gain (loss) on foreign currency translation	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$155.60M	USD	Annual
Unrealized net gain (loss) on foreign currency translation	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-42.30M	USD	Annual
Unrealized net gain (loss) on derivative financial instruments, net of tax	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$20.70M	USD	Annual
Unrealized net gain (loss) on derivative financial instruments, net of tax	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$2.80M	USD	Annual
Unrealized net gain (loss) on derivative financial instruments, net of tax	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$-29.60M	USD	Annual
OTHER COMPREHENSIVE INCOME (LOSS)	`OtherComprehensiveIncomeLossNetOfTax`	$-137.70M	USD	Annual
OTHER COMPREHENSIVE INCOME (LOSS)	`OtherComprehensiveIncomeLossNetOfTax`	$223.20M	USD	Annual
OTHER COMPREHENSIVE INCOME (LOSS)	`OtherComprehensiveIncomeLossNetOfTax`	$-26.80M	USD	Annual
OTHER COMPREHENSIVE LOSS (INCOME) ATTRIBUTABLE TO THE NONCONTROLLING INTEREST	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$30.50M	USD	Annual
OTHER COMPREHENSIVE LOSS (INCOME) ATTRIBUTABLE TO THE NONCONTROLLING INTEREST	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-4.60M	USD	Annual
OTHER COMPREHENSIVE LOSS (INCOME) ATTRIBUTABLE TO THE NONCONTROLLING INTEREST	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-4.80M	USD	Annual
TOTAL COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-7.36B	USD	Annual
TOTAL COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-521.50M	USD	Annual
TOTAL COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$356.20M	USD	Annual

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