10-K Filing

CENTURY ALUMINUM CO CIK: 949157 FY 2014

Filing Information

Form Type	10-K
Accession Number	`0000949157-15-000023`
Period End Date	20141231
Filing Date	20150302
Fiscal Year	2014
Fiscal Period	FY
XBRL Instance	cenx-20141231.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 88 Income Statement 113 Cash Flow Statement 160 Stockholders Equity 33 Comprehensive Income 47

Balance Sheet 88 line items

Line Item	Tag	Value	Unit	Period
Series A Preferred stock, par value (in dollars per share)	`PreferredStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Series A Preferred stock, par value (in dollars per share)	`PreferredStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Series A Preferred stock, shares authorized (in shares)	`PreferredStockSharesAuthorized`	5.00M	shares	Point-in-time
Series A Preferred stock, shares authorized (in shares)	`PreferredStockSharesAuthorized`	5.00M	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$183.98M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$84.09M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$163.24M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$183.40M	USD	Point-in-time
Series A Preferred stock, shares issued (in shares)	`PreferredStockSharesIssued`	160,000.00	shares	Point-in-time
Restricted cash	`RestrictedCashAndCashEquivalents`	$801.00K	USD	Point-in-time
Restricted cash	`RestrictedCashAndCashEquivalents`	$1.70M	USD	Point-in-time
Series A Preferred stock, shares issued (in shares)	`PreferredStockSharesIssued`	160,000.00	shares	Point-in-time
Series A Preferred stock, shares issued (in shares)	`PreferredStockSharesIssued`	160,000.00	shares	Point-in-time
Series A Preferred stock, shares outstanding (in shares)	`PreferredStockSharesOutstanding`	78,141.00	shares	Point-in-time
Series A Preferred stock, shares outstanding (in shares)	`PreferredStockSharesOutstanding`	79,620.00	shares	Point-in-time
Accounts receivable net	`AccountsReceivableNetCurrent`	$76.17M	USD	Point-in-time
Accounts receivable net	`AccountsReceivableNetCurrent`	$56.18M	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Due from affiliates	`DueFromRelatedPartiesCurrent`	$43.59M	USD	Point-in-time
Due from affiliates	`DueFromRelatedPartiesCurrent`	$31.50M	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Inventories	`InventoryNet`	$283.48M	USD	Point-in-time
Inventories	`InventoryNet`	$239.62M	USD	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	195.00M	shares	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	195.00M	shares	Point-in-time
Prepaid and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$29.77M	USD	Point-in-time
Prepaid and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$32.28M	USD	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	93.50M	shares	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	93.85M	shares	Point-in-time
Deferred taxes	`DeferredTaxAssetsNetCurrent`	$13.61M	USD	Point-in-time
Deferred taxes	`DeferredTaxAssetsNetCurrent`	$14.28M	USD	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	89.06M	shares	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	88.71M	shares	Point-in-time
Total current assets	`AssetsCurrent`	$599.24M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$471.06M	USD	Point-in-time
Property, plant and equipment net	`PropertyPlantAndEquipmentNet`	$1.29B	USD	Point-in-time
Property, plant and equipment net	`PropertyPlantAndEquipmentNet`	$1.25B	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$91.47M	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$123.58M	USD	Point-in-time
TOTAL	`Assets`	$1.81B	USD	Point-in-time
TOTAL	`Assets`	$1.78B	USD	Point-in-time
TOTAL	`Assets`	$2.01B	USD	Point-in-time
Accounts payable, trade	`AccountsPayableTradeCurrent`	$151.44M	USD	Point-in-time
Accounts payable, trade	`AccountsPayableTradeCurrent`	$108.49M	USD	Point-in-time
Due to affiliates	`DueToRelatedPartiesCurrent`	$53.58M	USD	Point-in-time
Due to affiliates	`DueToRelatedPartiesCurrent`	$22.26M	USD	Point-in-time
Accrued and other current liabilities	`AccruedLiabilitiesCurrent`	$104.65M	USD	Point-in-time
Accrued and other current liabilities	`AccruedLiabilitiesCurrent`	$69.47M	USD	Point-in-time
Accrued employee benefits costs	`PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities`	$8.41M	USD	Point-in-time
Accrued employee benefits costs	`PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities`	$10.16M	USD	Point-in-time
Industrial revenue bonds	`IndustrialRevenueBonds`	$7.82M	USD	Point-in-time
Industrial revenue bonds	`IndustrialRevenueBonds`	$7.82M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$247.76M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$296.32M	USD	Point-in-time
Senior notes payable	`SeniorLongTermNotes`	$246.53M	USD	Point-in-time
Senior notes payable	`SeniorLongTermNotes`	$246.89M	USD	Point-in-time
Accrued pension benefits costs less current portion	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$39.85M	USD	Point-in-time
Accrued pension benefits costs less current portion	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$59.91M	USD	Point-in-time
Accrued postretirement benefits costs less current portion	`OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent`	$152.89M	USD	Point-in-time
Accrued postretirement benefits costs less current portion	`OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent`	$129.28M	USD	Point-in-time
Other liabilities	`OtherLiabilitiesNoncurrent`	$53.27M	USD	Point-in-time
Other liabilities	`OtherLiabilitiesNoncurrent`	$37.74M	USD	Point-in-time
Deferred taxes	`DeferredTaxLiabilitiesNoncurrent`	$106.22M	USD	Point-in-time
Deferred taxes	`DeferredTaxLiabilitiesNoncurrent`	$113.60M	USD	Point-in-time
Total noncurrent liabilities	`LiabilitiesNoncurrent`	$559.62M	USD	Point-in-time
Total noncurrent liabilities	`LiabilitiesNoncurrent`	$626.56M	USD	Point-in-time
COMMITMENTS AND CONTINGENCIES (NOTE 15)	`CommitmentsAndContingencies`	-	USD	Point-in-time
COMMITMENTS AND CONTINGENCIES (NOTE 15)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Series A Preferred stock (one cent par value, 5,000,000 shares authorized; 160,000 issued and 78,141 outstanding at December 31, 2014; 160,000 issued and 79,620 outstanding at December 31, 2013)	`PreferredStockValue`	$1.00K	USD	Point-in-time
Series A Preferred stock (one cent par value, 5,000,000 shares authorized; 160,000 issued and 78,141 outstanding at December 31, 2014; 160,000 issued and 79,620 outstanding at December 31, 2013)	`PreferredStockValue`	$1.00K	USD	Point-in-time
Common stock (one cent par value, 195,000,000 shares authorized; 93,851,103 issued and 89,064,582 outstanding at December 31, 2014; 93,496,798 issued and 88,710,277 outstanding at December 31, 2013)	`CommonStockValue`	$939.00K	USD	Point-in-time
Common stock (one cent par value, 195,000,000 shares authorized; 93,851,103 issued and 89,064,582 outstanding at December 31, 2014; 93,496,798 issued and 88,710,277 outstanding at December 31, 2013)	`CommonStockValue`	$935.00K	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapital`	$2.51B	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapital`	$2.51B	USD	Point-in-time
Treasury stock, at cost	`TreasuryStockValue`	$49.92M	USD	Point-in-time
Treasury stock, at cost	`TreasuryStockValue`	$49.92M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-117.68M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-134.59M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-151.19M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-91.83M	USD	Point-in-time
Accumulated deficit	`RetainedEarningsAccumulatedDeficit`	$-1.25B	USD	Point-in-time
Accumulated deficit	`RetainedEarningsAccumulatedDeficit`	$-1.36B	USD	Point-in-time
Total shareholders equity	`StockholdersEquity`	$1.09B	USD	Point-in-time
Total shareholders equity	`StockholdersEquity`	$1.00B	USD	Point-in-time
Total shareholders equity	`StockholdersEquity`	$1.04B	USD	Point-in-time
Total shareholders equity	`StockholdersEquity`	$982.64M	USD	Point-in-time
TOTAL	`LiabilitiesAndStockholdersEquity`	$2.01B	USD	Point-in-time
TOTAL	`LiabilitiesAndStockholdersEquity`	$1.81B	USD	Point-in-time

Income Statement 113 line items

Line Item	Tag	Value	Unit	Period
Third-party customers	`SalesRevenueGoodsNet`	$719.81M	USD	Annual
Third-party customers	`SalesRevenueGoodsNet`	$943.26M	USD	Annual
Third-party customers	`SalesRevenueGoodsNet`	$668.94M	USD	Annual
Related parties	`RevenueFromRelatedParties`	$1.26B	USD	Annual
Related parties	`RevenueFromRelatedParties`	$511.05M	USD	Annual
Related parties	`RevenueFromRelatedParties`	$552.30M	USD	Annual
Sales Revenue net	`SalesRevenueNet`	$551.24M	USD	1 Quarter
Sales Revenue net	`SalesRevenueNet`	$500.63M	USD	1 Quarter
Sales Revenue net	`SalesRevenueNet`	$1.93B	USD	Annual
Sales Revenue net	`SalesRevenueNet`	$399.93M	USD	1 Quarter
Sales Revenue net	`SalesRevenueNet`	$401.17M	USD	1 Quarter
Sales Revenue net	`SalesRevenueNet`	$331.94M	USD	1 Quarter
Sales Revenue net	`SalesRevenueNet`	$458.32M	USD	1 Quarter
Sales Revenue net	`SalesRevenueNet`	$420.85M	USD	1 Quarter
Sales Revenue net	`SalesRevenueNet`	$1.27B	USD	Annual
Sales Revenue net	`SalesRevenueNet`	$321.27M	USD	1 Quarter
Sales Revenue net	`SalesRevenueNet`	$1.45B	USD	Annual
Cost of goods sold	`CostOfGoodsSold`	$1.23B	USD	Annual
Cost of goods sold	`CostOfGoodsSold`	$1.41B	USD	Annual
Cost of goods sold	`CostOfGoodsSold`	$1.73B	USD	Annual
Gross profit	`GrossProfit`	$-1.76M	USD	1 Quarter
Gross profit	`GrossProfit`	$-5.70M	USD	1 Quarter
Gross profit	`GrossProfit`	$75.71M	USD	1 Quarter
Gross profit	`GrossProfit`	$38.50M	USD	1 Quarter
Gross profit	`GrossProfit`	$15.29M	USD	1 Quarter
Gross profit	`GrossProfit`	$90.00M	USD	1 Quarter
Gross profit	`GrossProfit`	$46.34M	USD	Annual
Gross profit	`GrossProfit`	$12.35M	USD	1 Quarter
Gross profit	`GrossProfit`	$39.52M	USD	Annual
Gross profit	`GrossProfit`	$202.46M	USD	Annual
Gross profit	`GrossProfit`	$17.58M	USD	1 Quarter
Other operating expense net	`OtherOperatingIncomeExpenseNet`	$-12.48M	USD	Annual
Other operating expense net	`OtherOperatingIncomeExpenseNet`	$-8.60M	USD	Annual
Other operating expense net	`OtherOperatingIncomeExpenseNet`	$-18.25M	USD	Annual
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$49.20M	USD	Annual
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$35.36M	USD	Annual
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$67.48M	USD	Annual
Operating income (loss)	`OperatingIncomeLoss`	$140.78M	USD	Annual
Operating income (loss)	`OperatingIncomeLoss`	$-36.56M	USD	Annual
Operating income (loss)	`OperatingIncomeLoss`	$-7.27M	USD	Annual
Interest expense	`InterestExpense`	$23.09M	USD	Annual
Interest expense	`InterestExpense`	$24.03M	USD	Annual
Interest expense	`InterestExpense`	$22.02M	USD	Annual
Interest income	`InterestIncomeOther`	$301.00K	USD	Annual
Interest income	`InterestIncomeOther`	$728.00K	USD	Annual
Interest income	`InterestIncomeOther`	$554.00K	USD	Annual
Net gain (loss) on forward and derivative contracts	`GainLossOnDerivativeInstrumentsNetPretax`	$-4.15M	USD	Annual
Net gain (loss) on forward and derivative contracts	`GainLossOnDerivativeInstrumentsNetPretax`	$16.60M	USD	Annual
Net gain (loss) on forward and derivative contracts	`GainLossOnDerivativeInstrumentsNetPretax`	$179.00K	USD	Annual
Gain on bargain purchase	`BusinessCombinationBargainPurchaseGainRecognizedAmount`	-	USD	Annual
Gain on bargain purchase	`BusinessCombinationBargainPurchaseGainRecognizedAmount`	$5.25M	USD	Annual
Gain on bargain purchase	`BusinessCombinationBargainPurchaseGainRecognizedAmount`	$5.25M	USD	1 Quarter
Gain on bargain purchase	`BusinessCombinationBargainPurchaseGainRecognizedAmount`	-	USD	Annual
Gain on fair value of contingent consideration	`BusinessCombinationSeparatelyRecognizedTransactionsRevenuesAndGainsRecognized`	-	USD	Annual
Gain on fair value of contingent consideration	`BusinessCombinationSeparatelyRecognizedTransactionsRevenuesAndGainsRecognized`	$7.94M	USD	Annual
Gain on fair value of contingent consideration	`BusinessCombinationSeparatelyRecognizedTransactionsRevenuesAndGainsRecognized`	-	USD	Annual
Gain on fair value of contingent consideration	`BusinessCombinationSeparatelyRecognizedTransactionsRevenuesAndGainsRecognized`	$7.94M	USD	1 Quarter
Gain on remeasurement of equity investment	`BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain`	-	USD	Annual
Gain on remeasurement of equity investment	`BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain`	-	USD	Annual
Gain on remeasurement of equity investment	`BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain`	$1.32M	USD	Annual
Gain on remeasurement of equity investment	`BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain`	$1.32M	USD	1 Quarter
Loss on early extinguishment of debt	`GainsLossesOnExtinguishmentOfDebt`	-	USD	Annual
Loss on early extinguishment of debt	`GainsLossesOnExtinguishmentOfDebt`	-	USD	Annual
Loss on early extinguishment of debt	`GainsLossesOnExtinguishmentOfDebt`	$-3.27M	USD	Annual
Loss on early extinguishment of debt	`GainsLossesOnExtinguishmentOfDebt`	$3.27M	USD	1 Quarter
Other income net	`OtherNonoperatingIncomeExpense`	$5.58M	USD	Annual
Other income net	`OtherNonoperatingIncomeExpense`	$991.00K	USD	Annual
Other income net	`OtherNonoperatingIncomeExpense`	$496.00K	USD	Annual
Income (loss) before income taxes and equity in earnings of joint ventures	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$-29.32M	USD	Annual
Income (loss) before income taxes and equity in earnings of joint ventures	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$129.50M	USD	Annual
Income (loss) before income taxes and equity in earnings of joint ventures	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$-39.84M	USD	Annual
Income tax expense	`IncomeTaxExpenseBenefit`	$8.91M	USD	Annual
Income tax expense	`IncomeTaxExpenseBenefit`	$18.31M	USD	Annual
Income tax expense	`IncomeTaxExpenseBenefit`	$3.13M	USD	Annual
Income (loss) before equity in earnings of joint ventures	`IncomeLossAfterIncomeTaxesBeforeIncomeLossFromEquityMethodInvestments`	$-38.23M	USD	Annual
Income (loss) before equity in earnings of joint ventures	`IncomeLossAfterIncomeTaxesBeforeIncomeLossFromEquityMethodInvestments`	$111.19M	USD	Annual
Income (loss) before equity in earnings of joint ventures	`IncomeLossAfterIncomeTaxesBeforeIncomeLossFromEquityMethodInvestments`	$-42.98M	USD	Annual
Equity in earnings of joint ventures	`IncomeLossFromEquityMethodInvestments`	$2.66M	USD	Annual
Equity in earnings of joint ventures	`IncomeLossFromEquityMethodInvestments`	$1.30M	USD	Annual
Equity in earnings of joint ventures	`IncomeLossFromEquityMethodInvestments`	$2.62M	USD	Annual
Net income (loss)	`NetIncomeLoss`	$-20.10M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$8.25M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$50.41M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$-9.68M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$20.34M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$-29.38M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$-9.51M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$-35.61M	USD	Annual
Net income (loss)	`NetIncomeLoss`	$-40.31M	USD	Annual
Net income (loss)	`NetIncomeLoss`	$112.49M	USD	Annual
Net income (loss)	`NetIncomeLoss`	$61.85M	USD	1 Quarter
Earnings Per Share, Basic (in dollars per share)	`EarningsPerShareBasic`	$0.52	USD	1 Quarter
Earnings Per Share, Basic (in dollars per share)	`EarningsPerShareBasic`	$0.21	USD	1 Quarter
Earnings Per Share, Basic (in dollars per share)	`EarningsPerShareBasic`	$0.64	USD	1 Quarter
Earnings Per Share, Basic (in dollars per share)	`EarningsPerShareBasic`	$-0.45	USD	Annual
Earnings Per Share, Basic (in dollars per share)	`EarningsPerShareBasic`	$-0.23	USD	1 Quarter
Earnings Per Share, Basic (in dollars per share)	`EarningsPerShareBasic`	$-0.11	USD	1 Quarter
Earnings Per Share, Basic (in dollars per share)	`EarningsPerShareBasic`	$0.09	USD	1 Quarter
Earnings Per Share, Basic (in dollars per share)	`EarningsPerShareBasic`	$1.16	USD	Annual
Earnings Per Share, Basic (in dollars per share)	`EarningsPerShareBasic`	$-0.11	USD	1 Quarter
Earnings Per Share, Basic (in dollars per share)	`EarningsPerShareBasic`	$-0.40	USD	Annual
Earnings Per Share, Basic (in dollars per share)	`EarningsPerShareBasic`	$-0.33	USD	1 Quarter
Earnings Per Share, Diluted (in dollars per share)	`EarningsPerShareDiluted`	$-0.11	USD	1 Quarter
Earnings Per Share, Diluted (in dollars per share)	`EarningsPerShareDiluted`	$-0.40	USD	Annual
Earnings Per Share, Diluted (in dollars per share)	`EarningsPerShareDiluted`	$-0.11	USD	1 Quarter
Earnings Per Share, Diluted (in dollars per share)	`EarningsPerShareDiluted`	$0.63	USD	1 Quarter
Earnings Per Share, Diluted (in dollars per share)	`EarningsPerShareDiluted`	$-0.23	USD	1 Quarter
Earnings Per Share, Diluted (in dollars per share)	`EarningsPerShareDiluted`	$-0.45	USD	Annual
Earnings Per Share, Diluted (in dollars per share)	`EarningsPerShareDiluted`	$0.21	USD	1 Quarter
Earnings Per Share, Diluted (in dollars per share)	`EarningsPerShareDiluted`	$0.09	USD	1 Quarter
Earnings Per Share, Diluted (in dollars per share)	`EarningsPerShareDiluted`	$1.15	USD	Annual
Earnings Per Share, Diluted (in dollars per share)	`EarningsPerShareDiluted`	$0.52	USD	1 Quarter
Earnings Per Share, Diluted (in dollars per share)	`EarningsPerShareDiluted`	$-0.33	USD	1 Quarter

Cash Flow Statement 160 line items

Line Item	Tag	Value	Unit	Period
Net income (loss)	`NetIncomeLoss`	$-20.10M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$8.25M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$50.41M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$-9.68M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$20.34M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$-29.38M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$-9.51M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$-35.61M	USD	Annual
Net income (loss)	`NetIncomeLoss`	$-40.31M	USD	Annual
Net income (loss)	`NetIncomeLoss`	$112.49M	USD	Annual
Net income (loss)	`NetIncomeLoss`	$61.85M	USD	1 Quarter
Unrealized net loss (gain) on forward contracts	`UnrealizedGainLossOnCommodityContracts`	$-2.99M	USD	Annual
Unrealized net loss (gain) on forward contracts	`UnrealizedGainLossOnCommodityContracts`	$1.17M	USD	Annual
Unrealized net loss (gain) on forward contracts	`UnrealizedGainLossOnCommodityContracts`	-	USD	Annual
Gain on bargain purchase	`BusinessCombinationBargainPurchaseGainRecognizedAmount`	-	USD	Annual
Gain on bargain purchase	`BusinessCombinationBargainPurchaseGainRecognizedAmount`	$5.25M	USD	Annual
Gain on bargain purchase	`BusinessCombinationBargainPurchaseGainRecognizedAmount`	$5.25M	USD	1 Quarter
Gain on bargain purchase	`BusinessCombinationBargainPurchaseGainRecognizedAmount`	-	USD	Annual
Gain on fair value of contingent consideration	`BusinessCombinationSeparatelyRecognizedTransactionsRevenuesAndGainsRecognized`	-	USD	Annual
Gain on fair value of contingent consideration	`BusinessCombinationSeparatelyRecognizedTransactionsRevenuesAndGainsRecognized`	$7.94M	USD	Annual
Gain on fair value of contingent consideration	`BusinessCombinationSeparatelyRecognizedTransactionsRevenuesAndGainsRecognized`	-	USD	Annual
Gain on fair value of contingent consideration	`BusinessCombinationSeparatelyRecognizedTransactionsRevenuesAndGainsRecognized`	$7.94M	USD	1 Quarter
Gain on remeasurement of equity investment	`BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain`	-	USD	Annual
Gain on remeasurement of equity investment	`BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain`	-	USD	Annual
Gain on remeasurement of equity investment	`BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain`	$1.32M	USD	Annual
Gain on remeasurement of equity investment	`BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGain`	$1.32M	USD	1 Quarter
Unrealized gain on E.ON contingent obligation	`UnrealizedGainLossOnEOnObligation`	$15.72M	USD	1 Quarter
Unrealized gain on E.ON contingent obligation	`UnrealizedGainLossOnEOnObligation`	-	USD	Annual
Unrealized gain on E.ON contingent obligation	`UnrealizedGainLossOnEOnObligation`	$1.41M	USD	Annual
Unrealized gain on E.ON contingent obligation	`UnrealizedGainLossOnEOnObligation`	$16.78M	USD	Annual
Accrued and other plant curtailment costs net	`PaymentsForCurtailment`	$4.35M	USD	Annual
Accrued and other plant curtailment costs net	`PaymentsForCurtailment`	$5.25M	USD	Annual
Accrued and other plant curtailment costs net	`PaymentsForCurtailment`	$4.45M	USD	Annual
Lower of cost or market inventory adjustment	`InventoryWriteDown`	$-19.82M	USD	Annual
Lower of cost or market inventory adjustment	`InventoryWriteDown`	$1.25M	USD	Annual
Lower of cost or market inventory adjustment	`InventoryWriteDown`	$-1.25M	USD	Annual
Depreciation	`DepreciationDepletionAndAmortization`	$62.57M	USD	Annual
Depreciation	`DepreciationDepletionAndAmortization`	$70.73M	USD	Annual
Depreciation	`DepreciationDepletionAndAmortization`	$66.57M	USD	Annual
Sebree power contract amortization	`AmortizationofAssumedPowerContract`	$11.72M	USD	1 Quarter
Sebree power contract amortization	`AmortizationofAssumedPowerContract`	$5.53M	USD	1 Quarter
Sebree power contract amortization	`AmortizationofAssumedPowerContract`	$31.03M	USD	Annual
Sebree power contract amortization	`AmortizationofAssumedPowerContract`	$2.74M	USD	1 Quarter
Sebree power contract amortization	`AmortizationofAssumedPowerContract`	-	USD	Annual
Sebree power contract amortization	`AmortizationofAssumedPowerContract`	$16.57M	USD	1 Quarter
Sebree power contract amortization	`AmortizationofAssumedPowerContract`	$5.53M	USD	Annual
Debt discount amortization	`AmortizationOfDebtDiscountPremium`	$361.00K	USD	Annual
Debt discount amortization	`AmortizationOfDebtDiscountPremium`	$1.07M	USD	Annual
Debt discount amortization	`AmortizationOfDebtDiscountPremium`	$672.00K	USD	Annual
Pension and other postretirement benefits	`PensionAndOtherPostretirementBenefitExpense`	$6.94M	USD	Annual
Pension and other postretirement benefits	`PensionAndOtherPostretirementBenefitExpense`	$3.13M	USD	Annual
Pension and other postretirement benefits	`PensionAndOtherPostretirementBenefitExpense`	$1.74M	USD	Annual
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$1.49M	USD	Annual
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-1.53M	USD	Annual
Deferred income taxes	`IncreaseDecreaseInDeferredIncomeTaxes`	$-2.63M	USD	Annual
Stock-based compensation	`ShareBasedCompensation`	$1.33M	USD	Annual
Stock-based compensation	`ShareBasedCompensation`	$613.00K	USD	Annual
Stock-based compensation	`ShareBasedCompensation`	$1.08M	USD	Annual
Loss on early extinguishment of debt	`GainsLossesOnExtinguishmentOfDebt`	-	USD	Annual
Loss on early extinguishment of debt	`GainsLossesOnExtinguishmentOfDebt`	-	USD	Annual
Loss on early extinguishment of debt	`GainsLossesOnExtinguishmentOfDebt`	$-3.27M	USD	Annual
Loss on early extinguishment of debt	`GainsLossesOnExtinguishmentOfDebt`	$3.27M	USD	1 Quarter
Equity in earnings of joint ventures, net of dividends	`IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions`	$-871.00K	USD	Annual
Equity in earnings of joint ventures, net of dividends	`IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions`	$-425.00K	USD	Annual
Equity in earnings of joint ventures, net of dividends	`IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions`	$2.62M	USD	Annual
Accounts receivable net	`IncreaseDecreaseInAccountsReceivable`	$19.98M	USD	Annual
Accounts receivable net	`IncreaseDecreaseInAccountsReceivable`	$2.54M	USD	Annual
Accounts receivable net	`IncreaseDecreaseInAccountsReceivable`	$6.00M	USD	Annual
Due from affiliates	`IncreaseDecreaseInDueFromRelatedPartiesCurrent`	$-2.20M	USD	Annual
Due from affiliates	`IncreaseDecreaseInDueFromRelatedPartiesCurrent`	$-12.08M	USD	Annual
Due from affiliates	`IncreaseDecreaseInDueFromRelatedPartiesCurrent`	$5.72M	USD	Annual
Inventories	`IncreaseDecreaseInInventories`	$21.74M	USD	Annual
Inventories	`IncreaseDecreaseInInventories`	$16.51M	USD	Annual
Inventories	`IncreaseDecreaseInInventories`	$-31.85M	USD	Annual
Prepaid and other current assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$-4.95M	USD	Annual
Prepaid and other current assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$-5.32M	USD	Annual
Prepaid and other current assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$-3.39M	USD	Annual
Accounts payable, trade	`IncreaseDecreaseInAccountsPayableTrade`	$11.80M	USD	Annual
Accounts payable, trade	`IncreaseDecreaseInAccountsPayableTrade`	$-12.11M	USD	Annual
Accounts payable, trade	`IncreaseDecreaseInAccountsPayableTrade`	$25.22M	USD	Annual
Due to affiliates	`IncreaseDecreaseInDueToRelatedPartiesCurrent`	$3.06M	USD	Annual
Due to affiliates	`IncreaseDecreaseInDueToRelatedPartiesCurrent`	$13.85M	USD	Annual
Due to affiliates	`IncreaseDecreaseInDueToRelatedPartiesCurrent`	$-2.17M	USD	Annual
Accrued and other current liabilities	`IncreaseDecreaseInAccruedLiabilities`	$-5.75M	USD	Annual
Accrued and other current liabilities	`IncreaseDecreaseInAccruedLiabilities`	$18.07M	USD	Annual
Accrued and other current liabilities	`IncreaseDecreaseInAccruedLiabilities`	$5.83M	USD	Annual
Other net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-19.09M	USD	Annual
Other net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-1.60M	USD	Annual
Other net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-2.69M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$37.14M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$19.72M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$196.41M	USD	Annual
Purchase of property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$46.53M	USD	Annual
Purchase of property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$17.68M	USD	Annual
Purchase of property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$41.56M	USD	Annual
Nordural expansion Helguvik	`PaymentsToAcquireProjects`	$3.33M	USD	Annual
Nordural expansion Helguvik	`PaymentsToAcquireProjects`	$7.32M	USD	Annual
Nordural expansion Helguvik	`PaymentsToAcquireProjects`	$337.00K	USD	Annual
Purchase of carbon anode assets and improvements	`PaymentsToAcquireCarbonAnodeAssets`	$13.81M	USD	Annual
Purchase of carbon anode assets and improvements	`PaymentsToAcquireCarbonAnodeAssets`	$18.21M	USD	Annual
Purchase of carbon anode assets and improvements	`PaymentsToAcquireCarbonAnodeAssets`	$13.23M	USD	Annual
Purchase of Sebree smelter	`PaymentsToAcquireBusinessesGross`	$48.06M	USD	Annual
Purchase of Sebree smelter	`PaymentsToAcquireBusinessesGross`	-	USD	Annual
Purchase of Sebree smelter	`PaymentsToAcquireBusinessesGross`	$1.04M	USD	Annual
Investments in and advances to joint ventures	`PaymentsToAcquireInterestInJointVenture`	$275.00K	USD	Annual
Investments in and advances to joint ventures	`PaymentsToAcquireInterestInJointVenture`	$125.00K	USD	Annual
Investments in and advances to joint ventures	`PaymentsToAcquireInterestInJointVenture`	-	USD	Annual
Payments received from joint ventures	`ProceedsFromCollectionOfLongtermLoansToRelatedParties`	-	USD	Annual
Payments received from joint ventures	`ProceedsFromCollectionOfLongtermLoansToRelatedParties`	$6.62M	USD	Annual
Payments received from joint ventures	`ProceedsFromCollectionOfLongtermLoansToRelatedParties`	-	USD	Annual
Purchase of remaining interest in Mt. Holly smelter	`PaymentstoAcquireRemainingInterestinBusinessGross`	-	USD	Annual
Purchase of remaining interest in Mt. Holly smelter	`PaymentstoAcquireRemainingInterestinBusinessGross`	$53.83M	USD	Annual
Purchase of remaining interest in Mt. Holly smelter	`PaymentstoAcquireRemainingInterestinBusinessGross`	-	USD	Annual
Proceeds from sale of property, plant and equipment	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$46.00K	USD	Annual
Proceeds from sale of property, plant and equipment	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$525.00K	USD	Annual
Proceeds from sale of property, plant and equipment	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$188.00K	USD	Annual
Restricted and other cash deposits	`IncreaseDecreaseInRestrictedCash`	$258.00K	USD	Annual
Restricted and other cash deposits	`IncreaseDecreaseInRestrictedCash`	$1.44M	USD	Annual
Restricted and other cash deposits	`IncreaseDecreaseInRestrictedCash`	$-896.00K	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-117.17M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-32.53M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-109.06M	USD	Annual
Repayment of debt	`RepaymentsOfDebt`	$249.60M	USD	Annual
Repayment of debt	`RepaymentsOfDebt`	-	USD	Annual
Repayment of debt	`RepaymentsOfDebt`	$2.60M	USD	Annual
Proceeds from issuance of debt	`ProceedsFromIssuanceOfLongTermDebt`	-	USD	Annual
Proceeds from issuance of debt	`ProceedsFromIssuanceOfLongTermDebt`	$246.33M	USD	Annual
Proceeds from issuance of debt	`ProceedsFromIssuanceOfLongTermDebt`	-	USD	Annual
Borrowings under revolving credit facilities	`ProceedsFromLinesOfCredit`	$22.73M	USD	Annual
Borrowings under revolving credit facilities	`ProceedsFromLinesOfCredit`	$18.08M	USD	Annual
Borrowings under revolving credit facilities	`ProceedsFromLinesOfCredit`	$92.42M	USD	Annual
Repayments under revolving credit facilities	`RepaymentsOfLinesOfCredit`	$98.42M	USD	Annual
Repayments under revolving credit facilities	`RepaymentsOfLinesOfCredit`	$18.08M	USD	Annual
Repayments under revolving credit facilities	`RepaymentsOfLinesOfCredit`	$16.73M	USD	Annual
Debt issuance costs	`PaymentsOfDebtIssuanceCosts`	$3.99M	USD	Annual
Debt issuance costs	`PaymentsOfDebtIssuanceCosts`	-	USD	Annual
Debt issuance costs	`PaymentsOfDebtIssuanceCosts`	-	USD	Annual
Debt retirement costs	`PaymentsOfDebtExtinguishmentCosts`	$1.21M	USD	Annual
Debt retirement costs	`PaymentsOfDebtExtinguishmentCosts`	-	USD	Annual
Debt retirement costs	`PaymentsOfDebtExtinguishmentCosts`	-	USD	Annual
Repurchase of common stock	`PaymentsForRepurchaseOfCommonStock`	$4.03M	USD	Annual
Repurchase of common stock	`PaymentsForRepurchaseOfCommonStock`	-	USD	Annual
Repurchase of common stock	`PaymentsForRepurchaseOfCommonStock`	-	USD	Annual
Issuance of common stock	`ProceedsFromIssuanceOfCommonStock`	-	USD	Annual
Issuance of common stock	`ProceedsFromIssuanceOfCommonStock`	$44.00K	USD	Annual
Issuance of common stock	`ProceedsFromIssuanceOfCommonStock`	$403.00K	USD	Annual
Net cash used in financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-8.20M	USD	Annual
Net cash used in financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-2.43M	USD	Annual
Net cash used in financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-4.03M	USD	Annual
CHANGE IN CASH AND CASH EQUIVALENTS	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$575.00K	USD	Annual
CHANGE IN CASH AND CASH EQUIVALENTS	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$79.15M	USD	Annual
CHANGE IN CASH AND CASH EQUIVALENTS	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$-99.89M	USD	Annual
Cash and cash equivalents, beginning of year	`CashAndCashEquivalentsAtCarryingValue`	$183.98M	USD	Point-in-time
Cash and cash equivalents, beginning of year	`CashAndCashEquivalentsAtCarryingValue`	$84.09M	USD	Point-in-time
Cash and cash equivalents, beginning of year	`CashAndCashEquivalentsAtCarryingValue`	$163.24M	USD	Point-in-time
Cash and cash equivalents, beginning of year	`CashAndCashEquivalentsAtCarryingValue`	$183.40M	USD	Point-in-time
Cash and cash equivalents, end of year	`CashAndCashEquivalentsAtCarryingValue`	$183.98M	USD	Point-in-time
Cash and cash equivalents, end of year	`CashAndCashEquivalentsAtCarryingValue`	$84.09M	USD	Point-in-time
Cash and cash equivalents, end of year	`CashAndCashEquivalentsAtCarryingValue`	$163.24M	USD	Point-in-time
Cash and cash equivalents, end of year	`CashAndCashEquivalentsAtCarryingValue`	$183.40M	USD	Point-in-time

Stockholders Equity 33 line items

Line Item	Tag	Value	Unit	Period
Balance	`StockholdersEquity`	$1.09B	USD	Point-in-time
Balance	`StockholdersEquity`	$1.00B	USD	Point-in-time
Balance	`StockholdersEquity`	$1.04B	USD	Point-in-time
Balance	`StockholdersEquity`	$982.64M	USD	Point-in-time
Net income (loss)	`NetIncomeLoss`	$-20.10M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$8.25M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$50.41M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$-9.68M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$20.34M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$-29.38M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$-9.51M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$-35.61M	USD	Annual
Net income (loss)	`NetIncomeLoss`	$-40.31M	USD	Annual
Net income (loss)	`NetIncomeLoss`	$112.49M	USD	Annual
Net income (loss)	`NetIncomeLoss`	$61.85M	USD	1 Quarter
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-16.60M	USD	Annual
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-38.50M	USD	Annual
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$59.36M	USD	Annual
Elimination of equity in investee resulting from acquisition	`EliminationOfEquityInInvestee`	$12.65M	USD	Annual
Issuance of common stock compensation plans	`StockIssuedDuringPeriodValueStockOptionsExercised`	$304.00K	USD	Annual
Issuance of common stock compensation plans	`StockIssuedDuringPeriodValueStockOptionsExercised`	$44.00K	USD	Annual
Issuance of common stock compensation plans	`StockIssuedDuringPeriodValueStockOptionsExercised`	-	USD	Annual
Repurchase of common stock	`TreasuryStockValueAcquiredCostMethod`	$4.03M	USD	Annual
Repurchase of common stock	`TreasuryStockValueAcquiredCostMethod`	$49.92M	USD	14 Qtrs
Share-based compensation expense	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$1.39M	USD	Annual
Share-based compensation expense	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$613.00K	USD	Annual
Share-based compensation expense	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$1.08M	USD	Annual
Conversion of preferred stock to common stock	`ConversionOfStockAmountConverted1`	-	USD	Annual
Conversion of preferred stock to common stock	`ConversionOfStockAmountConverted1`	-	USD	Annual
Balance	`StockholdersEquity`	$1.09B	USD	Point-in-time
Balance	`StockholdersEquity`	$1.00B	USD	Point-in-time
Balance	`StockholdersEquity`	$1.04B	USD	Point-in-time
Balance	`StockholdersEquity`	$982.64M	USD	Point-in-time

Comprehensive Income 47 line items

Line Item	Tag	Value	Unit	Period
Net income (loss)	`NetIncomeLoss`	$-20.10M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$8.25M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$50.41M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$-9.68M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$20.34M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$-29.38M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$-9.51M	USD	1 Quarter
Net income (loss)	`NetIncomeLoss`	$-35.61M	USD	Annual
Net income (loss)	`NetIncomeLoss`	$-40.31M	USD	Annual
Net income (loss)	`NetIncomeLoss`	$112.49M	USD	Annual
Net income (loss)	`NetIncomeLoss`	$61.85M	USD	1 Quarter
Net unrealized loss on financial instruments	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax`	$-218.00K	USD	Annual
Net unrealized loss on financial instruments	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax`	-	USD	Annual
Net unrealized loss on financial instruments	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax`	-	USD	Annual
Net loss reclassified to income on financial instruments	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax`	$-567.00K	USD	Annual
Net loss reclassified to income on financial instruments	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax`	-	USD	Annual
Net loss reclassified to income on financial instruments	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax`	-	USD	Annual
Net gain on foreign currency cash flow hedges reclassified as income	`ForeignCurrencyCashFlowHedgeGainLossReclassifiedToEarningsNet`	$-186.00K	USD	Annual
Net gain on foreign currency cash flow hedges reclassified as income	`ForeignCurrencyCashFlowHedgeGainLossReclassifiedToEarningsNet`	$-186.00K	USD	Annual
Net gain on foreign currency cash flow hedges reclassified as income	`ForeignCurrencyCashFlowHedgeGainLossReclassifiedToEarningsNet`	$-186.00K	USD	Annual
Net gain (loss) arising during the period	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax`	$-41.99M	USD	Annual
Net gain (loss) arising during the period	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax`	$56.80M	USD	Annual
Net gain (loss) arising during the period	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax`	$-16.69M	USD	Annual
Prior service cost arising during the period	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax`	-	USD	Annual
Prior service cost arising during the period	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax`	-	USD	Annual
Prior service cost arising during the period	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax`	$1.30M	USD	Annual
Amortization of prior service benefit during the period	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax`	$-4.11M	USD	Annual
Amortization of prior service benefit during the period	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax`	$-3.92M	USD	Annual
Amortization of prior service benefit during the period	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax`	$-3.50M	USD	Annual
Amortization of net loss during the period	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax`	$-8.17M	USD	Annual
Amortization of net loss during the period	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax`	$-10.31M	USD	Annual
Amortization of net loss during the period	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax`	$-9.84M	USD	Annual
Change in equity in investee other comprehensive income	`ComprehensiveIncomeLossChangeInInvesteeBeforeTax`	$61.00K	USD	Annual
Change in equity in investee other comprehensive income	`ComprehensiveIncomeLossChangeInInvesteeBeforeTax`	$-4.24M	USD	Annual
Change in equity in investee other comprehensive income	`ComprehensiveIncomeLossChangeInInvesteeBeforeTax`	-	USD	Annual
Other comprehensive income (loss) before income tax effect	`OtherComprehensiveIncomeLossBeforeTax`	$60.92M	USD	Annual
Other comprehensive income (loss) before income tax effect	`OtherComprehensiveIncomeLossBeforeTax`	$-15.04M	USD	Annual
Other comprehensive income (loss) before income tax effect	`OtherComprehensiveIncomeLossBeforeTax`	$-36.67M	USD	Annual
Income tax effect	`OtherComprehensiveIncomeLossTax`	$1.83M	USD	Annual
Income tax effect	`OtherComprehensiveIncomeLossTax`	$1.56M	USD	Annual
Income tax effect	`OtherComprehensiveIncomeLossTax`	$1.56M	USD	Annual
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-16.60M	USD	Annual
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-38.50M	USD	Annual
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$59.36M	USD	Annual
Total comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-52.21M	USD	Annual
Total comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$73.99M	USD	Annual
Total comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$19.05M	USD	Annual

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