10-K Filing

CLEVELAND-CLIFFS INC. CIK: 764065 FY 2014

Filing Information

Form Type	10-K
Accession Number	`0000764065-15-000044`
Period End Date	20141231
Filing Date	20150225
Fiscal Year	2014
Fiscal Period	FY
XBRL Instance	clf-20141231.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 108 Income Statement 182 Cash Flow Statement 110 Stockholders Equity 59 Comprehensive Income 32

Balance Sheet 108 line items

Line Item	Tag	Value	Unit	Period
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$335.50M	USD	Point-in-time
Preferred stock, par value	`PreferredStockParOrStatedValuePerShare`	-	USD	Point-in-time
Preferred stock, par value	`PreferredStockParOrStatedValuePerShare`	-	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$290.90M	USD	Point-in-time
Accounts receivable, net	`AccountsReceivableNetCurrent`	$205.60M	USD	Point-in-time
Accounts receivable, net	`AccountsReceivableNetCurrent`	$270.00M	USD	Point-in-time
Cumulative Mandatory Convertible	`CumulativeMandatoryConvertible`	0.07	pure	Point-in-time
Cumulative Mandatory Convertible	`CumulativeMandatoryConvertible`	0.07	pure	Point-in-time
Inventories	`InventoryNet`	$391.40M	USD	Point-in-time
Inventories	`InventoryNet`	$326.70M	USD	Point-in-time
Supplies and other inventories	`Supplies`	$216.00M	USD	Point-in-time
Supplies and other inventories	`Supplies`	$195.20M	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	`IncomeTaxReceivable`	$74.10M	USD	Point-in-time
Income tax receivable	`IncomeTaxReceivable`	$237.70M	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
Other current assets	`OtherAssetsCurrent`	$192.80M	USD	Point-in-time
Common shares, issued (in shares)	`CommonStockSharesIssued`	159.55M	shares	Point-in-time
Other current assets	`OtherAssetsCurrent`	$273.00M	USD	Point-in-time
Common shares, issued (in shares)	`CommonStockSharesIssued`	159.55M	shares	Point-in-time
Common shares, outstanding	`CommonStockSharesOutstanding`	153.25M	shares	Point-in-time
TOTAL CURRENT ASSETS	`AssetsCurrent`	$1.56B	USD	Point-in-time
Common shares, outstanding	`CommonStockSharesOutstanding`	153.13M	shares	Point-in-time
TOTAL CURRENT ASSETS	`AssetsCurrent`	$1.45B	USD	Point-in-time
Common shares in treasury	`TreasuryStockShares`	6.30M	shares	Point-in-time
PROPERTY, PLANT AND EQUIPMENT, NET	`PropertyPlantAndEquipmentNet`	$11.15B	USD	Point-in-time
Common shares in treasury	`TreasuryStockShares`	6.42M	shares	Point-in-time
PROPERTY, PLANT AND EQUIPMENT, NET	`PropertyPlantAndEquipmentNet`	$1.41B	USD	Point-in-time
PROPERTY, PLANT AND EQUIPMENT, NET	`PropertyPlantAndEquipmentNet`	$11.21B	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxesAndOtherTaxLiabilitiesNoncurrent`	$-156.40M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxesAndOtherTaxLiabilitiesNoncurrent`	$-41.50M	USD	Point-in-time
Other non-current assets	`OtherAssetsNoncurrent`	$143.80M	USD	Point-in-time
Other non-current assets	`OtherAssetsNoncurrent`	$367.00M	USD	Point-in-time
TOTAL OTHER ASSETS	`TotalOtherAssets`	$300.20M	USD	Point-in-time
TOTAL OTHER ASSETS	`TotalOtherAssets`	$408.50M	USD	Point-in-time
TOTAL ASSETS	`Assets`	$13.12B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$13.57B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$3.16B	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$345.50M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$272.10M	USD	Point-in-time
Accrued employment costs	`EmployeeRelatedLiabilitiesCurrent`	$129.00M	USD	Point-in-time
Accrued employment costs	`EmployeeRelatedLiabilitiesCurrent`	$99.50M	USD	Point-in-time
Income taxes payable	`AccruedIncomeTaxesCurrent`	$55.60M	USD	Point-in-time
Income taxes payable	`AccruedIncomeTaxesCurrent`	$1.00M	USD	Point-in-time
State and local taxes payable	`TaxesPayableCurrent`	$52.50M	USD	Point-in-time
State and local taxes payable	`TaxesPayableCurrent`	$61.70M	USD	Point-in-time
Current portion of debt	`LongTermDebtCurrent`	$20.90M	USD	Point-in-time
Current portion of debt	`LongTermDebtCurrent`	$21.80M	USD	Point-in-time
Accrued expenses	`AccruedLiabilitiesCurrent`	$206.40M	USD	Point-in-time
Accrued expenses	`AccruedLiabilitiesCurrent`	$255.30M	USD	Point-in-time
Accrued royalties	`AccruedRoyaltiesCurrent`	$31.20M	USD	Point-in-time
Accrued royalties	`AccruedRoyaltiesCurrent`	$57.30M	USD	Point-in-time
Current portion of capital leases	`CapitalLeaseObligationsCurrent`	$74.50M	USD	Point-in-time
Current portion of capital leases	`CapitalLeaseObligationsCurrent`	$49.00M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$150.70M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$160.10M	USD	Point-in-time
TOTAL CURRENT LIABILITIES	`LiabilitiesCurrent`	$1.09B	USD	Point-in-time
TOTAL CURRENT LIABILITIES	`LiabilitiesCurrent`	$958.60M	USD	Point-in-time
Pensions	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$275.40M	USD	Point-in-time
Pensions	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$197.50M	USD	Point-in-time
Other postretirement benefits	`OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent`	$96.50M	USD	Point-in-time
Other postretirement benefits	`OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent`	$119.80M	USD	Point-in-time
TOTAL POSTEMPLOYMENT BENEFIT LIABILITIES	`PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent`	$294.00M	USD	Point-in-time
TOTAL POSTEMPLOYMENT BENEFIT LIABILITIES	`PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent`	$395.20M	USD	Point-in-time
ENVIRONMENTAL AND MINE CLOSURE OBLIGATIONS	`MineReclamationAndClosingLiabilityNoncurrent`	$256.00M	USD	Point-in-time
ENVIRONMENTAL AND MINE CLOSURE OBLIGATIONS	`MineReclamationAndClosingLiabilityNoncurrent`	$309.70M	USD	Point-in-time
DEFERRED INCOME TAXES	`DeferredTaxLiabilitiesNoncurrent`	$1.15B	USD	Point-in-time
DEFERRED INCOME TAXES	`DeferredTaxLiabilitiesNoncurrent`	$51.30M	USD	Point-in-time
LONG-TERM DEBT	`LongTermDebtNoncurrent`	$2.96B	USD	Point-in-time
LONG-TERM DEBT	`LongTermDebtNoncurrent`	$3.02B	USD	Point-in-time
OTHER LIABILITIES	`OtherLiabilitiesNoncurrent`	$274.90M	USD	Point-in-time
OTHER LIABILITIES	`OtherLiabilitiesNoncurrent`	$379.30M	USD	Point-in-time
TOTAL LIABILITIES	`Liabilities`	$6.24B	USD	Point-in-time
TOTAL LIABILITIES	`Liabilities`	$4.90B	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 (2013 - 731,250)	`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 (2013 - 731,250)	`PreferredSharesIssuedAndOutstandingValue`	$731.30M	USD	Point-in-time
Common Shares - par value $0.125 per share, Authorized - 400,000,000 shares (2013 - 400,000,000 shares); Issued - 159,546,224 shares (2013 - 159,546,224) shares); Outstanding - 153,246,754 shares (2013 - 153,126,291) shares)	`CommonStockValueOutstanding`	$19.80M	USD	Point-in-time
Common Shares - par value $0.125 per share, Authorized - 400,000,000 shares (2013 - 400,000,000 shares); Issued - 159,546,224 shares (2013 - 159,546,224) shares); Outstanding - 153,246,754 shares (2013 - 153,126,291) 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`	$2.33B	USD	Point-in-time
Retained earnings (Accumulated deficit)	`RetainedEarningsAccumulatedDeficit`	$3.41B	USD	Point-in-time
Retained earnings (Accumulated deficit)	`RetainedEarningsAccumulatedDeficit`	$-3.96B	USD	Point-in-time
Cost of 6,299,470 common shares in treasury (2013 - 6,419,933 shares)	`TreasuryStockValue`	$305.50M	USD	Point-in-time
Cost of 6,299,470 common shares in treasury (2013 - 6,419,933 shares)	`TreasuryStockValue`	$285.70M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-239.60M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-112.90M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-55.60M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-245.80M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-20.20M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-55.10M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-51.40M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-101.40M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-178.40M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-92.60M	USD	Point-in-time
TOTAL CLIFFS SHAREHOLDERS' EQUITY (DEFICIT)	`StockholdersEquity`	$6.07B	USD	Point-in-time
TOTAL CLIFFS SHAREHOLDERS' EQUITY (DEFICIT)	`StockholdersEquity`	$-1.43B	USD	Point-in-time
NONCONTROLLING INTEREST (DEFICIT)	`MinorityInterest`	$-303.00M	USD	Point-in-time
NONCONTROLLING INTEREST (DEFICIT)	`MinorityInterest`	$814.80M	USD	Point-in-time
TOTAL EQUITY (DEFICIT)	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.88B	USD	Point-in-time
TOTAL EQUITY (DEFICIT)	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.76B	USD	Point-in-time
TOTAL EQUITY (DEFICIT)	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$-1.73B	USD	Point-in-time
TOTAL EQUITY (DEFICIT)	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$7.04B	USD	Point-in-time
TOTAL LIABILITIES AND EQUITY (DEFICIT)	`LiabilitiesAndStockholdersEquity`	$3.16B	USD	Point-in-time
TOTAL LIABILITIES AND EQUITY (DEFICIT)	`LiabilitiesAndStockholdersEquity`	$13.12B	USD	Point-in-time

Income Statement 182 line items

Line Item	Tag	Value	Unit	Period
Product	`SalesRevenueGoodsNet`	$5.52B	USD	Annual
Product	`SalesRevenueGoodsNet`	$4.23B	USD	Annual
Product	`SalesRevenueGoodsNet`	$5.35B	USD	Annual
Reimbursement Revenue	`ReimbursementRevenue`	$351.80M	USD	Annual
Reimbursement Revenue	`ReimbursementRevenue`	$392.90M	USD	Annual
Reimbursement Revenue	`ReimbursementRevenue`	$344.80M	USD	Annual
TOTAL REVENUES	`Revenues`	$1.52B	USD	1 Quarter
TOTAL REVENUES	`Revenues`	$1.10B	USD	1 Quarter
TOTAL REVENUES	`Revenues`	$4.62B	USD	Annual
TOTAL REVENUES	`Revenues`	$1.14B	USD	1 Quarter
TOTAL REVENUES	`Revenues`	$1.28B	USD	1 Quarter
TOTAL REVENUES	`Revenues`	$1.30B	USD	1 Quarter
TOTAL REVENUES	`Revenues`	$1.55B	USD	1 Quarter
TOTAL REVENUES	`Revenues`	$940.00M	USD	1 Quarter
TOTAL REVENUES	`Revenues`	$5.69B	USD	Annual
TOTAL REVENUES	`Revenues`	$1.49B	USD	1 Quarter
TOTAL REVENUES	`Revenues`	$5.87B	USD	Annual
COST OF GOODS SOLD AND OPERATING EXPENSES	`CostOfGoodsAndServicesSold`	$4.17B	USD	Annual
COST OF GOODS SOLD AND OPERATING EXPENSES	`CostOfGoodsAndServicesSold`	$4.54B	USD	Annual
COST OF GOODS SOLD AND OPERATING EXPENSES	`CostOfGoodsAndServicesSold`	$4.70B	USD	Annual
SALES MARGIN	`GrossProfit`	$237.90M	USD	1 Quarter
SALES MARGIN	`GrossProfit`	$451.40M	USD	Annual
SALES MARGIN	`GrossProfit`	$1.15B	USD	Annual
SALES MARGIN	`GrossProfit`	$268.20M	USD	1 Quarter
SALES MARGIN	`GrossProfit`	$348.70M	USD	1 Quarter
SALES MARGIN	`GrossProfit`	$92.00M	USD	1 Quarter
SALES MARGIN	`GrossProfit`	$294.50M	USD	1 Quarter
SALES MARGIN	`GrossProfit`	$168.70M	USD	1 Quarter
SALES MARGIN	`GrossProfit`	$127.50M	USD	1 Quarter
SALES MARGIN	`GrossProfit`	$1.17B	USD	Annual
SALES MARGIN	`GrossProfit`	$63.20M	USD	1 Quarter
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$231.60M	USD	Annual
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$282.50M	USD	Annual
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$208.70M	USD	Annual
Exploration costs	`ExplorationExpenseMining`	$8.80M	USD	Annual
Exploration costs	`ExplorationExpenseMining`	$59.00M	USD	Annual
Exploration costs	`ExplorationExpenseMining`	$142.80M	USD	Annual
Impairment of goodwill and other long-lived assets	`AssetImpairmentCharges`	$1.05B	USD	Annual
Impairment of goodwill and other long-lived assets	`AssetImpairmentCharges`	$250.80M	USD	Annual
Impairment of goodwill and other long-lived assets	`AssetImpairmentCharges`	$9.03B	USD	Annual
Gain (loss) on disposal of other assets	`GainLossOnSaleOfOtherAssets`	$1.20M	USD	Annual
Gain (loss) on disposal of other assets	`GainLossOnSaleOfOtherAssets`	$-423.00M	USD	Annual
Gain (loss) on disposal of other assets	`GainLossOnSaleOfOtherAssets`	$16.70M	USD	Annual
Miscellaneous - net	`OtherOperatingIncomeExpenseNet`	$-226.30M	USD	Annual
Miscellaneous - net	`OtherOperatingIncomeExpenseNet`	$46.40M	USD	Annual
Miscellaneous - net	`OtherOperatingIncomeExpenseNet`	$-6.90M	USD	Annual
Other operating expense	`OperatingExpenses`	$1.48B	USD	Annual
Other operating expense	`OperatingExpenses`	$478.30M	USD	Annual
Other operating expense	`OperatingExpenses`	$9.90B	USD	Annual
OPERATING INCOME (LOSS)	`OperatingIncomeLoss`	$-308.80M	USD	Annual
OPERATING INCOME (LOSS)	`OperatingIncomeLoss`	$-9.45B	USD	Annual
OPERATING INCOME (LOSS)	`OperatingIncomeLoss`	$671.00M	USD	Annual
Interest expense, net	`InterestIncomeExpenseNet`	$-179.10M	USD	Annual
Interest expense, net	`InterestIncomeExpenseNet`	$-185.20M	USD	Annual
Interest expense, net	`InterestIncomeExpenseNet`	$-195.60M	USD	Annual
Other non-operating income (expense)	`OtherNonoperatingIncomeExpense`	$-2.60M	USD	Annual
Other non-operating income (expense)	`OtherNonoperatingIncomeExpense`	$2.60M	USD	Annual
Other non-operating income (expense)	`OtherNonoperatingIncomeExpense`	$26.80M	USD	Annual
TOTAL OTHER INCOME (EXPENSE)	`NonoperatingIncomeExpense`	$-158.40M	USD	Annual
TOTAL OTHER INCOME (EXPENSE)	`NonoperatingIncomeExpense`	$-193.00M	USD	Annual
TOTAL OTHER INCOME (EXPENSE)	`NonoperatingIncomeExpense`	$-181.70M	USD	Annual
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES AND EQUITY INCOME (LOSS) FROM VENTURES	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$489.30M	USD	Annual
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES AND EQUITY INCOME (LOSS) FROM VENTURES	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$-9.60B	USD	Annual
INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES AND EQUITY INCOME (LOSS) FROM VENTURES	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$-501.80M	USD	Annual
INCOME TAX BENEFIT (EXPENSE)	`IncomeTaxExpenseBenefit`	$-1.30B	USD	Annual
INCOME TAX BENEFIT (EXPENSE)	`IncomeTaxExpenseBenefit`	$-289.70M	USD	1 Quarter
INCOME TAX BENEFIT (EXPENSE)	`IncomeTaxExpenseBenefit`	$255.90M	USD	Annual
INCOME TAX BENEFIT (EXPENSE)	`IncomeTaxExpenseBenefit`	$55.10M	USD	Annual
EQUITY LOSS FROM VENTURES, net of tax	`IncomeLossFromEquityMethodInvestments`	$-404.80M	USD	Annual
EQUITY LOSS FROM VENTURES, net of tax	`IncomeLossFromEquityMethodInvestments`	$-9.90M	USD	Annual
EQUITY LOSS FROM VENTURES, net of tax	`IncomeLossFromEquityMethodInvestments`	$-74.40M	USD	Annual
INCOME (LOSS) FROM CONTINUING OPERATIONS	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$359.80M	USD	Annual
INCOME (LOSS) FROM CONTINUING OPERATIONS	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$-1.16B	USD	Annual
INCOME (LOSS) FROM CONTINUING OPERATIONS	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$-8.31B	USD	Annual
INCOME and GAIN ON SALE FROM DISCONTINUED OPERATIONS, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	-	USD	1 Quarter
INCOME and GAIN ON SALE FROM DISCONTINUED OPERATIONS, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	-	USD	Annual
INCOME and GAIN ON SALE FROM DISCONTINUED OPERATIONS, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$35.90M	USD	Annual
INCOME and GAIN ON SALE FROM DISCONTINUED OPERATIONS, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$2.00M	USD	1 Quarter
INCOME and GAIN ON SALE FROM DISCONTINUED OPERATIONS, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	-	USD	1 Quarter
INCOME and GAIN ON SALE FROM DISCONTINUED OPERATIONS, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$2.00M	USD	Annual
INCOME and GAIN ON SALE FROM DISCONTINUED OPERATIONS, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	-	USD	1 Quarter
INCOME and GAIN ON SALE FROM DISCONTINUED OPERATIONS, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	-	USD	1 Quarter
INCOME and GAIN ON SALE FROM DISCONTINUED OPERATIONS, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	-	USD	1 Quarter
NET INCOME (LOSS)	`ProfitLoss`	$361.80M	USD	Annual
NET INCOME (LOSS)	`ProfitLoss`	$-1.13B	USD	Annual
NET INCOME (LOSS)	`ProfitLoss`	$-8.31B	USD	Annual
LOSS ATTRIBUTABLE TO NONCONTROLLING INTEREST	`NetIncomeLossAttributableToNoncontrollingInterest`	$-227.20M	USD	Annual
LOSS ATTRIBUTABLE TO NONCONTROLLING INTEREST	`NetIncomeLossAttributableToNoncontrollingInterest`	$-1.09B	USD	Annual
LOSS ATTRIBUTABLE TO NONCONTROLLING INTEREST	`NetIncomeLossAttributableToNoncontrollingInterest`	$-51.70M	USD	Annual
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$-7.22B	USD	Annual
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$-5.88B	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$413.50M	USD	Annual
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$146.00M	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$107.00M	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$117.20M	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$43.30M	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$-899.40M	USD	Annual
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$-1.29B	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$10.90M	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$-70.30M	USD	1 Quarter
PREFERRED STOCK DIVIDENDS	`DividendsPreferredStock`	-	USD	Annual
PREFERRED STOCK DIVIDENDS	`DividendsPreferredStock`	$51.20M	USD	Annual
PREFERRED STOCK DIVIDENDS	`DividendsPreferredStock`	$12.80M	USD	1 Quarter
PREFERRED STOCK DIVIDENDS	`DividendsPreferredStock`	$12.80M	USD	1 Quarter
PREFERRED STOCK DIVIDENDS	`DividendsPreferredStock`	$12.80M	USD	1 Quarter
PREFERRED STOCK DIVIDENDS	`DividendsPreferredStock`	$12.80M	USD	1 Quarter
PREFERRED STOCK DIVIDENDS	`DividendsPreferredStock`	$48.70M	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`	$-83.10M	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`	$-7.28B	USD	Annual
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS COMMON SHAREHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$-899.40M	USD	Annual
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS COMMON SHAREHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$-1.90M	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS COMMON SHAREHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$-5.89B	USD	1 Quarter
Continuing operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.67	USD	1 Quarter
Continuing operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$-38.49	USD	1 Quarter
Continuing operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.87	USD	1 Quarter
Continuing operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$-0.01	USD	1 Quarter
Continuing operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$-0.54	USD	1 Quarter
Continuing operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.66	USD	1 Quarter
Continuing operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$-6.57	USD	Annual
Continuing operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.20	USD	1 Quarter
Continuing operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$-47.52	USD	Annual
Continuing operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$2.39	USD	Annual
Continuing operations	`IncomeLossFromContinuingOperationsPerBasicShare`	$-8.48	USD	1 Quarter
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$0.25	USD	Annual
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	-	USD	1 Quarter
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	-	USD	Annual
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	-	USD	1 Quarter
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$0.01	USD	1 Quarter
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	-	USD	1 Quarter
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	-	USD	1 Quarter
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$0.01	USD	Annual
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	-	USD	1 Quarter
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`	$-47.52	USD	Annual
Earnings (loss) per Common Share Attributable to Cliffs Common Shareholders - Basic:	`EarningsPerShareBasic`	$0.68	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`	$-0.54	USD	1 Quarter
Earnings (loss) per Common Share Attributable to Cliffs Common Shareholders - Basic:	`EarningsPerShareBasic`	$0.66	USD	1 Quarter
Earnings (loss) per Common Share Attributable to Cliffs Common Shareholders - Basic:	`EarningsPerShareBasic`	$0.20	USD	1 Quarter
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`	$-6.32	USD	Annual
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`	$0.87	USD	1 Quarter
Continuing operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-38.49	USD	1 Quarter
Continuing operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-8.48	USD	1 Quarter
Continuing operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-0.54	USD	1 Quarter
Continuing operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.82	USD	1 Quarter
Continuing operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.20	USD	1 Quarter
Continuing operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$2.36	USD	Annual
Continuing operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-0.01	USD	1 Quarter
Continuing operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.66	USD	1 Quarter
Continuing operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-47.52	USD	Annual
Continuing operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.65	USD	1 Quarter
Continuing operations	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-6.57	USD	Annual
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	-	USD	1 Quarter
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$0.25	USD	Annual
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	-	USD	1 Quarter
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	-	USD	1 Quarter
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$0.01	USD	Annual
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	-	USD	Annual
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	-	USD	1 Quarter
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$0.01	USD	1 Quarter
Discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	-	USD	1 Quarter
Earnings (loss) per Common Share Attributable to Cliffs Common Shareholders - Diluted:	`EarningsPerShareDiluted`	$0.66	USD	1 Quarter
Earnings (loss) per Common Share Attributable to Cliffs Common Shareholders - Diluted:	`EarningsPerShareDiluted`	$0.82	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`	$2.37	USD	Annual
Earnings (loss) per Common Share Attributable to Cliffs Common Shareholders - Diluted:	`EarningsPerShareDiluted`	$-6.32	USD	Annual
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`	$-8.48	USD	1 Quarter
Earnings (loss) per Common Share Attributable to Cliffs Common Shareholders - Diluted:	`EarningsPerShareDiluted`	$0.20	USD	1 Quarter
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`	$-0.01	USD	1 Quarter
Earnings (loss) per Common Share Attributable to Cliffs Common Shareholders - Diluted:	`EarningsPerShareDiluted`	$0.66	USD	1 Quarter
Basic	`WeightedAverageNumberOfSharesOutstandingBasic`	151.73M	shares	Annual
Basic	`WeightedAverageNumberOfSharesOutstandingBasic`	153.10M	shares	Annual
Basic	`WeightedAverageNumberOfSharesOutstandingBasic`	142.35M	shares	Annual
Diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	142.35M	shares	Annual
Diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	174.32M	shares	Annual
Diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	153.10M	shares	Annual

Cash Flow Statement 110 line items

Line Item	Tag	Value	Unit	Period
Net income (loss)	`ProfitLoss`	$361.80M	USD	Annual
Net income (loss)	`ProfitLoss`	$-1.13B	USD	Annual
Net income (loss)	`ProfitLoss`	$-8.31B	USD	Annual
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$525.80M	USD	Annual
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$593.30M	USD	Annual
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$504.00M	USD	Annual
Impairment of goodwill and other long-lived assets	`AssetImpairmentCharges`	$1.05B	USD	Annual
Impairment of goodwill and other long-lived assets	`AssetImpairmentCharges`	$250.80M	USD	Annual
Impairment of goodwill and other long-lived assets	`AssetImpairmentCharges`	$9.03B	USD	Annual
Equity loss in ventures (net of tax)	`IncomeLossFromEquityMethodInvestments`	$-404.80M	USD	Annual
Equity loss in ventures (net of tax)	`IncomeLossFromEquityMethodInvestments`	$-9.90M	USD	Annual
Equity loss in ventures (net of tax)	`IncomeLossFromEquityMethodInvestments`	$-74.40M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-138.10M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$127.00M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-1.15B	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`	$-24.50M	USD	Annual
Changes in deferred revenue and below-market sales contracts	`IncreaseDecreaseInDeferredRevenueAndBelowMarketSalesContracts`	$-18.00M	USD	Annual
Loss on sale of Cliffs Logan County Coal	`LossonsaleofCliffsLoganCountyCoal`	-	USD	Annual
Loss on sale of Cliffs Logan County Coal	`LossonsaleofCliffsLoganCountyCoal`	$419.60M	USD	Annual
Loss on sale of Cliffs Logan County Coal	`LossonsaleofCliffsLoganCountyCoal`	-	USD	Annual
Other	`OtherNoncashIncomeExpense`	$40.90M	USD	Annual
Other	`OtherNoncashIncomeExpense`	$37.70M	USD	Annual
Other	`OtherNoncashIncomeExpense`	$3.30M	USD	Annual
Receivables and other assets	`IncreaseDecreaseInAccountsReceivableAndOtherOperatingAssets`	$82.80M	USD	Annual
Receivables and other assets	`IncreaseDecreaseInAccountsReceivableAndOtherOperatingAssets`	$74.80M	USD	Annual
Receivables and other assets	`IncreaseDecreaseInAccountsReceivableAndOtherOperatingAssets`	$-138.80M	USD	Annual
Product inventories	`IncreaseDecreaseInInventories`	$-30.80M	USD	Annual
Product inventories	`IncreaseDecreaseInInventories`	$-37.80M	USD	Annual
Product inventories	`IncreaseDecreaseInInventories`	$-39.90M	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`	$-366.10M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$1.15B	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$514.50M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$358.90M	USD	Annual
Purchase of property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$1.13B	USD	Annual
Purchase of property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$284.10M	USD	Annual
Purchase of property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$861.60M	USD	Annual
Proceeds from sale of Cliffs Logan County Coal	`ProceedsfromsaleofCliffsLoganCountyCoal`	-	USD	Annual
Proceeds from sale of Cliffs Logan County Coal	`ProceedsfromsaleofCliffsLoganCountyCoal`	$155.00M	USD	Annual
Proceeds from sale of Cliffs Logan County Coal	`ProceedsfromsaleofCliffsLoganCountyCoal`	-	USD	Annual
Proceeds from sale of Sonoma	`ProceedsfromsaleofSonoma`	-	USD	Annual
Proceeds from sale of Sonoma	`ProceedsfromsaleofSonoma`	$152.60M	USD	Annual
Proceeds from sale of Sonoma	`ProceedsfromsaleofSonoma`	-	USD	Annual
Other investing activities	`PaymentsForProceedsFromOtherInvestingActivities`	$-50.30M	USD	Annual
Other investing activities	`PaymentsForProceedsFromOtherInvestingActivities`	$-13.10M	USD	Annual
Other investing activities	`PaymentsForProceedsFromOtherInvestingActivities`	$-25.50M	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`	$-961.80M	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`	$285.30M	USD	Annual
Net proceeds from issuance of common shares	`ProceedsFromIssuanceOfCommonStock`	-	USD	Annual
Net proceeds from issuance of common shares	`ProceedsFromIssuanceOfCommonStock`	-	USD	Annual
Net proceeds from issuance of senior notes	`ProceedsFromIssuanceOfSeniorLongTermDebt`	-	USD	Annual
Net proceeds from issuance of senior notes	`ProceedsFromIssuanceOfSeniorLongTermDebt`	$497.00M	USD	Annual
Net proceeds from issuance of senior notes	`ProceedsFromIssuanceOfSeniorLongTermDebt`	-	USD	Annual
Repayment of term loan	`RepaymentsOfOtherLongTermDebt`	-	USD	Annual
Repayment of term loan	`RepaymentsOfOtherLongTermDebt`	$847.10M	USD	Annual
Repayment of term loan	`RepaymentsOfOtherLongTermDebt`	$124.80M	USD	Annual
Borrowings under credit facilities	`ProceedsFromLongTermLinesOfCredit`	$1.01B	USD	Annual
Borrowings under credit facilities	`ProceedsFromLongTermLinesOfCredit`	$670.50M	USD	Annual
Borrowings under credit facilities	`ProceedsFromLongTermLinesOfCredit`	$1.22B	USD	Annual
Repayment under credit facilities	`RepaymentsOfLongTermLinesOfCredit`	$687.00M	USD	Annual
Repayment under credit facilities	`RepaymentsOfLongTermLinesOfCredit`	$1.22B	USD	Annual
Repayment under credit facilities	`RepaymentsOfLongTermLinesOfCredit`	$995.50M	USD	Annual
Proceeds from equipment loans	`Proceedsfromequipmentloans`	-	USD	Annual
Proceeds from equipment loans	`Proceedsfromequipmentloans`	-	USD	Annual
Proceeds from equipment loans	`Proceedsfromequipmentloans`	$164.80M	USD	Annual
Repayments of equipment loans	`Repaymentsofequipmentloans`	$20.90M	USD	Annual
Repayments of equipment loans	`Repaymentsofequipmentloans`	-	USD	Annual
Repayments of equipment loans	`Repaymentsofequipmentloans`	$3.00M	USD	Annual
Repayment of senior notes	`RepaymentsOfSeniorDebt`	-	USD	Annual
Repayment of senior notes	`RepaymentsOfSeniorDebt`	-	USD	Annual
Repayment of senior notes	`RepaymentsOfSeniorDebt`	$325.00M	USD	Annual
Repurchase of debt	`GainLossOnRepurchaseOfDebtInstrument`	-	USD	Annual
Repurchase of debt	`GainLossOnRepurchaseOfDebtInstrument`	-	USD	Annual
Repurchase of debt	`GainLossOnRepurchaseOfDebtInstrument`	$28.80M	USD	Annual
Contributions (to)/by joint ventures, net	`ProceedsFromContributionsFromAffiliates`	$23.30M	USD	Annual
Contributions (to)/by joint ventures, net	`ProceedsFromContributionsFromAffiliates`	$95.40M	USD	Annual
Contributions (to)/by joint ventures, net	`ProceedsFromContributionsFromAffiliates`	$-25.70M	USD	Annual
Common stock dividends	`PaymentsOfDividendsCommonStock`	$307.20M	USD	Annual
Common stock dividends	`PaymentsOfDividendsCommonStock`	$92.50M	USD	Annual
Common stock dividends	`PaymentsOfDividendsCommonStock`	$91.90M	USD	Annual
Preferred stock dividends	`PaymentsOfDividendsPreferredStockAndPreferenceStock`	$51.20M	USD	Annual
Preferred stock dividends	`PaymentsOfDividendsPreferredStockAndPreferenceStock`	$35.70M	USD	Annual
Preferred stock dividends	`PaymentsOfDividendsPreferredStockAndPreferenceStock`	-	USD	Annual
Other financing activities	`ProceedsFromPaymentsForOtherFinancingActivities`	$-40.80M	USD	Annual
Other financing activities	`ProceedsFromPaymentsForOtherFinancingActivities`	$-69.20M	USD	Annual
Other financing activities	`ProceedsFromPaymentsForOtherFinancingActivities`	$-52.00M	USD	Annual
Net cash (used in) provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-171.90M	USD	Annual
Net cash (used in) provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-288.30M	USD	Annual
Net cash (used in) provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$119.60M	USD	Annual
EFFECT OF EXCHANGE RATE CHANGES ON CASH	`EffectOfExchangeRateOnCashAndCashEquivalents`	$-22.40M	USD	Annual
EFFECT OF EXCHANGE RATE CHANGES ON CASH	`EffectOfExchangeRateOnCashAndCashEquivalents`	$1.30M	USD	Annual
EFFECT OF EXCHANGE RATE CHANGES ON CASH	`EffectOfExchangeRateOnCashAndCashEquivalents`	$-11.60M	USD	Annual
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$-326.40M	USD	Annual
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$140.30M	USD	Annual
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$-44.60M	USD	Annual
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	`CashAndCashEquivalentsAtCarryingValueIncludingAssetsHeldForSale`	$521.60M	USD	Point-in-time
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`	$195.20M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT END OF PERIOD	`CashAndCashEquivalentsAtCarryingValueIncludingAssetsHeldForSale`	$521.60M	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`	$195.20M	USD	Point-in-time

Stockholders Equity 59 line items

Line Item	Tag	Value	Unit	Period
Common stock dividends per share	`CommonStockDividendsPerShareCashPaid`	$0.60	USD	Annual
Common stock dividends per share	`CommonStockDividendsPerShareCashPaid`	$2.16	USD	Annual
Common stock dividends per share	`CommonStockDividendsPerShareCashPaid`	$0.60	USD	Annual
Preferred stock dividends per share	`PreferredStockDividendsPerShareCashPaid`	$1.66	USD	Annual
Preferred stock dividends per share	`PreferredStockDividendsPerShareCashPaid`	$1.75	USD	Annual
Balance, beginning of period (in shares)	`CommonStockSharesOutstanding`	153.25M	shares	Point-in-time
Balance, beginning of period (in shares)	`CommonStockSharesOutstanding`	153.13M	shares	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`	$-1.73B	USD	Point-in-time
Balance, beginning of period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$7.04B	USD	Point-in-time
NET INCOME (LOSS)	`ProfitLoss`	$361.80M	USD	Annual
NET INCOME (LOSS)	`ProfitLoss`	$-1.13B	USD	Annual
NET INCOME (LOSS)	`ProfitLoss`	$-8.31B	USD	Annual
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-862.40M	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, Portion Attributable to Parent	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-7.36B	USD	Annual
Other Comprehensive Income (Loss), Net of Tax	`OtherComprehensiveIncomeLossNetOfTax`	$44.60M	USD	Annual
Other Comprehensive Income (Loss), Net of Tax	`OtherComprehensiveIncomeLossNetOfTax`	$-137.70M	USD	Annual
Other Comprehensive Income (Loss), Net of Tax	`OtherComprehensiveIncomeLossNetOfTax`	$-26.80M	USD	Annual
Pension and OPEB liability, net of tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-208.30M	USD	Annual
Pension and OPEB liability, net of tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-33.80M	USD	Annual
Pension and OPEB liability, net of tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$91.00M	USD	Annual
Unrealized net loss on marketable securities, net of tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-500.00K	USD	Annual
Unrealized net loss on marketable securities, net of tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-7.20M	USD	Annual
Unrealized net loss on marketable securities, net of tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$3.10M	USD	Annual
Total comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$335.00M	USD	Annual
Total comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-1.08B	USD	Annual
Total comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-8.45B	USD	Annual
Equity offering	`StockIssuedDuringPeriodValueNewIssues`	$285.30M	USD	Annual
Purchase of subsidiary shares from noncontrolling interest	`MinorityInterestDecreaseFromRedemptions`	$2.10M	USD	Annual
Undistributed losses to noncontrolling interest to subsidiary	`UndistributedEarningsLossesRelatedToNoncontrollingInterests`	$17.00M	USD	Annual
Undistributed losses to noncontrolling interest to subsidiary	`UndistributedEarningsLossesRelatedToNoncontrollingInterests`	$400.00K	USD	Annual
Undistributed losses to noncontrolling interest to subsidiary	`UndistributedEarningsLossesRelatedToNoncontrollingInterests`	$-25.50M	USD	Annual
Capital contribution by noncontrolling interest to subsidiary	`ProceedsFromMinorityShareholders`	$100.00K	USD	Annual
Capital contribution by noncontrolling interest to subsidiary	`ProceedsFromMinorityShareholders`	$-104.40M	USD	Annual
Capital contribution by noncontrolling interest to subsidiary	`ProceedsFromMinorityShareholders`	$-5.20M	USD	Annual
Stock Issued During Period, Value, Acquisitions	`StockIssuedDuringPeriodValueAcquisitions`	$-8.00M	USD	Annual
Stock Issued During Period, Value, Acquisitions	`StockIssuedDuringPeriodValueAcquisitions`	$-102.10M	USD	Annual
Stock and other incentive plans	`StockIssuedDuringPeriodValueShareBasedCompensation`	$15.70M	USD	Annual
Stock and other incentive plans	`StockIssuedDuringPeriodValueShareBasedCompensation`	$14.20M	USD	Annual
Stock and other incentive plans	`StockIssuedDuringPeriodValueShareBasedCompensation`	$100.00K	USD	Annual
Common stock dividends ($0.60 per share)	`DividendsCommonStock`	$307.20M	USD	Annual
Common stock dividends ($0.60 per share)	`DividendsCommonStock`	$92.50M	USD	Annual
Common stock dividends ($0.60 per share)	`DividendsCommonStock`	$91.90M	USD	Annual
Preferred stock dividends ($1.66 per depositary share)	`DividendsPreferredStock`	-	USD	Annual
Preferred stock dividends ($1.66 per depositary share)	`DividendsPreferredStock`	$51.20M	USD	Annual
Preferred stock dividends ($1.66 per depositary share)	`DividendsPreferredStock`	$12.80M	USD	1 Quarter
Preferred stock dividends ($1.66 per depositary share)	`DividendsPreferredStock`	$12.80M	USD	1 Quarter
Preferred stock dividends ($1.66 per depositary share)	`DividendsPreferredStock`	$12.80M	USD	1 Quarter
Preferred stock dividends ($1.66 per depositary share)	`DividendsPreferredStock`	$12.80M	USD	1 Quarter
Preferred stock dividends ($1.66 per depositary share)	`DividendsPreferredStock`	$48.70M	USD	Annual
Preferred Stock Dividends	`PreferredStockDividends`	$51.30M	USD	Annual
Balance, end of period (in shares)	`CommonStockSharesOutstanding`	153.25M	shares	Point-in-time
Balance, end of period (in shares)	`CommonStockSharesOutstanding`	153.13M	shares	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`	$-1.73B	USD	Point-in-time
Balance, end of period	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$7.04B	USD	Point-in-time

Comprehensive Income 32 line items

Line Item	Tag	Value	Unit	Period
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$-7.22B	USD	Annual
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$-5.88B	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$413.50M	USD	Annual
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$146.00M	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$107.00M	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$117.20M	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$43.30M	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$-899.40M	USD	Annual
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$-1.29B	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$10.90M	USD	1 Quarter
NET INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`NetIncomeLoss`	$-70.30M	USD	1 Quarter
Pension and OPEB liability, net of tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-208.30M	USD	Annual
Pension and OPEB liability, net of tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-33.80M	USD	Annual
Pension and OPEB liability, net of tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$91.00M	USD	Annual
Unrealized net gain (loss) on marketable securities, net of tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-500.00K	USD	Annual
Unrealized net gain (loss) on marketable securities, net of tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-7.20M	USD	Annual
Unrealized net gain (loss) on marketable securities, net of tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$3.10M	USD	Annual
Unrealized net gain (loss) on foreign currency translation	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$3.80M	USD	Annual
Unrealized net gain (loss) on foreign currency translation	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-42.30M	USD	Annual
Unrealized net gain (loss) on foreign currency translation	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-208.60M	USD	Annual
Unrealized net gain (loss) on derivative financial instruments, net of tax	`OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax`	$7.50M	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`	$44.60M	USD	Annual
OTHER COMPREHENSIVE INCOME (LOSS)	`OtherComprehensiveIncomeLossNetOfTax`	$-137.70M	USD	Annual
OTHER COMPREHENSIVE INCOME (LOSS)	`OtherComprehensiveIncomeLossNetOfTax`	$-26.80M	USD	Annual
OTHER COMPREHENSIVE LOSS (INCOME) ATTRIBUTABLE TO THE NONCONTROLLING INTEREST	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$7.60M	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`	$-4.80M	USD	Annual
TOTAL COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-862.40M	USD	Annual
TOTAL COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$356.20M	USD	Annual
TOTAL COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO CLIFFS SHAREHOLDERS	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-7.36B	USD	Annual

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