10-K Filing

CENTURY ALUMINUM CO CIK: 949157 FY 2024

Filing Information

Form Type	10-K
Accession Number	`0000949157-25-000024`
Period End Date	20241231
Filing Date	20250303
Fiscal Year	2024
Fiscal Period	FY
XBRL Instance	cenx-20241231_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 146 Income Statement 150 Cash Flow Statement 250 Stockholders Equity 46 Comprehensive Income 72

Balance Sheet 146 line items

Line Item	Tag	Value	Unit	Period
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$32.90M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$32.90M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$88.80M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$88.80M	USD	Point-in-time
Restricted cash	`RestrictedCashAndCashEquivalents`	$2.80M	USD	Point-in-time
Restricted cash	`RestrictedCashAndCashEquivalents`	$2.80M	USD	Point-in-time
Restricted cash	`RestrictedCashAndCashEquivalents`	$1.50M	USD	Point-in-time
Restricted cash	`RestrictedCashAndCashEquivalents`	$1.50M	USD	Point-in-time
Accounts receivable - net	`AccountsReceivableNetCurrent`	$53.70M	USD	Point-in-time
Accounts receivable - net	`AccountsReceivableNetCurrent`	$53.70M	USD	Point-in-time
Accounts receivable - net	`AccountsReceivableNetCurrent`	$75.80M	USD	Point-in-time
Accounts receivable - net	`AccountsReceivableNetCurrent`	$75.80M	USD	Point-in-time
Non-trade receivables	`NontradeReceivablesCurrent`	$13.20M	USD	Point-in-time
Non-trade receivables	`NontradeReceivablesCurrent`	$13.20M	USD	Point-in-time
Non-trade receivables	`NontradeReceivablesCurrent`	$36.20M	USD	Point-in-time
Non-trade receivables	`NontradeReceivablesCurrent`	$36.20M	USD	Point-in-time
Manufacturing credit receivable	`ManufacturingCreditReceivableCurrent`	$81.50M	USD	Point-in-time
Manufacturing credit receivable	`ManufacturingCreditReceivableCurrent`	$81.50M	USD	Point-in-time
Manufacturing credit receivable	`ManufacturingCreditReceivableCurrent`	$59.30M	USD	Point-in-time
Manufacturing credit receivable	`ManufacturingCreditReceivableCurrent`	$59.30M	USD	Point-in-time
Inventories	`InventoryNet`	$539.00M	USD	Point-in-time
Inventories	`InventoryNet`	$539.00M	USD	Point-in-time
Inventories	`InventoryNet`	$477.00M	USD	Point-in-time
Inventories	`InventoryNet`	$477.00M	USD	Point-in-time
Derivative assets	`DerivativeAssetsCurrent`	$4.20M	USD	Point-in-time
Derivative assets	`DerivativeAssetsCurrent`	$4.20M	USD	Point-in-time
Derivative assets	`DerivativeAssetsCurrent`	$2.90M	USD	Point-in-time
Derivative assets	`DerivativeAssetsCurrent`	$2.90M	USD	Point-in-time
Prepaid and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$27.50M	USD	Point-in-time
Prepaid and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$27.50M	USD	Point-in-time
Prepaid and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$28.30M	USD	Point-in-time
Prepaid and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$28.30M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$802.80M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$802.80M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$767.10M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$767.10M	USD	Point-in-time
Property, plant and equipment - net	`PropertyPlantAndEquipmentNet`	$1.00B	USD	Point-in-time
Property, plant and equipment - net	`PropertyPlantAndEquipmentNet`	$1.00B	USD	Point-in-time
Property, plant and equipment - net	`PropertyPlantAndEquipmentNet`	$978.30M	USD	Point-in-time
Property, plant and equipment - net	`PropertyPlantAndEquipmentNet`	$978.30M	USD	Point-in-time
Manufacturing credit receivable - less current portion	`ManufacturingCreditReceivableNoncurrent`	$70.40M	USD	Point-in-time
Manufacturing credit receivable - less current portion	`ManufacturingCreditReceivableNoncurrent`	$70.40M	USD	Point-in-time
Manufacturing credit receivable - less current portion	`ManufacturingCreditReceivableNoncurrent`	-	USD	Point-in-time
Manufacturing credit receivable - less current portion	`ManufacturingCreditReceivableNoncurrent`	-	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$87.90M	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$87.90M	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$75.20M	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$75.20M	USD	Point-in-time
TOTAL	`Assets`	$1.47B	USD	Point-in-time
TOTAL	`Assets`	$1.47B	USD	Point-in-time
TOTAL	`Assets`	$1.94B	USD	Point-in-time
TOTAL	`Assets`	$1.94B	USD	Point-in-time
TOTAL	`Assets`	$1.85B	USD	Point-in-time
TOTAL	`Assets`	$1.85B	USD	Point-in-time
Accounts payable, trade	`AccountsPayableTradeCurrent`	$187.30M	USD	Point-in-time
Accounts payable, trade	`AccountsPayableTradeCurrent`	$187.30M	USD	Point-in-time
Accounts payable, trade	`AccountsPayableTradeCurrent`	$249.50M	USD	Point-in-time
Accounts payable, trade	`AccountsPayableTradeCurrent`	$249.50M	USD	Point-in-time
Accrued compensation and benefits	`AccruedEmployeeBenefitsCurrent`	$49.80M	USD	Point-in-time
Accrued compensation and benefits	`AccruedEmployeeBenefitsCurrent`	$49.80M	USD	Point-in-time
Accrued compensation and benefits	`AccruedEmployeeBenefitsCurrent`	$38.10M	USD	Point-in-time
Accrued compensation and benefits	`AccruedEmployeeBenefitsCurrent`	$38.10M	USD	Point-in-time
Accrued and other current liabilities	`AccruedLiabilitiesCurrent`	$42.00M	USD	Point-in-time
Accrued and other current liabilities	`AccruedLiabilitiesCurrent`	$42.00M	USD	Point-in-time
Accrued and other current liabilities	`AccruedLiabilitiesCurrent`	$50.90M	USD	Point-in-time
Accrued and other current liabilities	`AccruedLiabilitiesCurrent`	$50.90M	USD	Point-in-time
Derivative liabilities	`DerivativeLiabilitiesCurrent`	$4.40M	USD	Point-in-time
Derivative liabilities	`DerivativeLiabilitiesCurrent`	$4.40M	USD	Point-in-time
Derivative liabilities	`DerivativeLiabilitiesCurrent`	$1.40M	USD	Point-in-time
Derivative liabilities	`DerivativeLiabilitiesCurrent`	$1.40M	USD	Point-in-time
Deferred credit - preliminary bargain purchase gain	`BusinessCombinationBargainPurchaseGain`	$273.40M	USD	Point-in-time
Deferred credit - preliminary bargain purchase gain	`BusinessCombinationBargainPurchaseGain`	$273.40M	USD	Point-in-time
Deferred credit - preliminary bargain purchase gain	`BusinessCombinationBargainPurchaseGain`	-	USD	Point-in-time
Deferred credit - preliminary bargain purchase gain	`BusinessCombinationBargainPurchaseGain`	-	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$463.70M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$463.70M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$763.00M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$763.00M	USD	Point-in-time
Accrued benefits costs - less current portion	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$120.30M	USD	Point-in-time
Accrued benefits costs - less current portion	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$120.30M	USD	Point-in-time
Accrued benefits costs - less current portion	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$130.40M	USD	Point-in-time
Accrued benefits costs - less current portion	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$130.40M	USD	Point-in-time
Other liabilities	`OtherLiabilitiesNoncurrent`	$92.60M	USD	Point-in-time
Other liabilities	`OtherLiabilitiesNoncurrent`	$92.60M	USD	Point-in-time
Other liabilities	`OtherLiabilitiesNoncurrent`	$66.30M	USD	Point-in-time
Other liabilities	`OtherLiabilitiesNoncurrent`	$66.30M	USD	Point-in-time
Deferred taxes	`DeferredIncomeTaxLiabilitiesNet`	$71.20M	USD	Point-in-time
Deferred taxes	`DeferredIncomeTaxLiabilitiesNet`	$71.20M	USD	Point-in-time
Deferred taxes	`DeferredIncomeTaxLiabilitiesNet`	$72.40M	USD	Point-in-time
Deferred taxes	`DeferredIncomeTaxLiabilitiesNet`	$72.40M	USD	Point-in-time
Asset retirement obligations - less current portion	`AssetRetirementObligationsNoncurrent`	$49.50M	USD	Point-in-time
Asset retirement obligations - less current portion	`AssetRetirementObligationsNoncurrent`	$49.50M	USD	Point-in-time
Asset retirement obligations - less current portion	`AssetRetirementObligationsNoncurrent`	$61.50M	USD	Point-in-time
Asset retirement obligations - less current portion	`AssetRetirementObligationsNoncurrent`	$61.50M	USD	Point-in-time
Total noncurrent liabilities	`LiabilitiesNoncurrent`	$739.40M	USD	Point-in-time
Total noncurrent liabilities	`LiabilitiesNoncurrent`	$739.40M	USD	Point-in-time
Total noncurrent liabilities	`LiabilitiesNoncurrent`	$813.00M	USD	Point-in-time
Total noncurrent liabilities	`LiabilitiesNoncurrent`	$813.00M	USD	Point-in-time
COMMITMENTS AND CONTINGENCIES (NOTE 17)	`CommitmentsAndContingencies`	-	USD	Point-in-time
COMMITMENTS AND CONTINGENCIES (NOTE 17)	`CommitmentsAndContingencies`	-	USD	Point-in-time
COMMITMENTS AND CONTINGENCIES (NOTE 17)	`CommitmentsAndContingencies`	-	USD	Point-in-time
COMMITMENTS AND CONTINGENCIES (NOTE 17)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Preferred stock (Note 9)	`PreferredStockValue`	-	USD	Point-in-time
Preferred stock (Note 9)	`PreferredStockValue`	-	USD	Point-in-time
Preferred stock (Note 9)	`PreferredStockValue`	-	USD	Point-in-time
Preferred stock (Note 9)	`PreferredStockValue`	-	USD	Point-in-time
Common stock (Note 9)	`CommonStockValue`	$1.00M	USD	Point-in-time
Common stock (Note 9)	`CommonStockValue`	$1.00M	USD	Point-in-time
Common stock (Note 9)	`CommonStockValue`	$1.00M	USD	Point-in-time
Common stock (Note 9)	`CommonStockValue`	$1.00M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapital`	$2.55B	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapital`	$2.55B	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapital`	$2.54B	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapital`	$2.54B	USD	Point-in-time
Treasury stock, at cost	`TreasuryStockValue`	$86.30M	USD	Point-in-time
Treasury stock, at cost	`TreasuryStockValue`	$86.30M	USD	Point-in-time
Treasury stock, at cost	`TreasuryStockValue`	$86.30M	USD	Point-in-time
Treasury stock, at cost	`TreasuryStockValue`	$86.30M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-103.30M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-103.30M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-97.90M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-97.90M	USD	Point-in-time
Accumulated deficit	`RetainedEarningsAccumulatedDeficit`	$-1.67B	USD	Point-in-time
Accumulated deficit	`RetainedEarningsAccumulatedDeficit`	$-1.67B	USD	Point-in-time
Accumulated deficit	`RetainedEarningsAccumulatedDeficit`	$-2.00B	USD	Point-in-time
Accumulated deficit	`RetainedEarningsAccumulatedDeficit`	$-2.00B	USD	Point-in-time
Total Century shareholders equity	`StockholdersEquity`	$694.40M	USD	Point-in-time
Total Century shareholders equity	`StockholdersEquity`	$694.40M	USD	Point-in-time
Total Century shareholders equity	`StockholdersEquity`	$355.60M	USD	Point-in-time
Total Century shareholders equity	`StockholdersEquity`	$355.60M	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	$-11.50M	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	$-11.50M	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	$-31.70M	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	$-31.70M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$399.30M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$399.30M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$344.10M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$344.10M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$421.00M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$421.00M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$662.70M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$662.70M	USD	Point-in-time
TOTAL	`LiabilitiesAndStockholdersEquity`	$1.94B	USD	Point-in-time
TOTAL	`LiabilitiesAndStockholdersEquity`	$1.94B	USD	Point-in-time
TOTAL	`LiabilitiesAndStockholdersEquity`	$1.85B	USD	Point-in-time
TOTAL	`LiabilitiesAndStockholdersEquity`	$1.85B	USD	Point-in-time

Income Statement 150 line items

Line Item	Tag	Value	Unit	Period
Costs of goods sold	`CostOfGoodsAndServicesSold`	$2.09B	USD	Annual
Costs of goods sold	`CostOfGoodsAndServicesSold`	$2.09B	USD	Annual
Costs of goods sold	`CostOfGoodsAndServicesSold`	$2.04B	USD	Annual
Costs of goods sold	`CostOfGoodsAndServicesSold`	$2.04B	USD	Annual
Costs of goods sold	`CostOfGoodsAndServicesSold`	$2.73B	USD	Annual
Costs of goods sold	`CostOfGoodsAndServicesSold`	$2.73B	USD	Annual
Total net sales	`RevenueFromContractWithCustomerExcludingAssessedTax`	$2.19B	USD	Annual
Total net sales	`RevenueFromContractWithCustomerExcludingAssessedTax`	$2.19B	USD	Annual
Total net sales	`RevenueFromContractWithCustomerExcludingAssessedTax`	$2.22B	USD	Annual
Total net sales	`RevenueFromContractWithCustomerExcludingAssessedTax`	$2.22B	USD	Annual
Total net sales	`RevenueFromContractWithCustomerExcludingAssessedTax`	$2.78B	USD	Annual
Total net sales	`RevenueFromContractWithCustomerExcludingAssessedTax`	$2.78B	USD	Annual
Costs of goods sold	`CostOfGoodsAndServicesSold`	$2.09B	USD	Annual
Costs of goods sold	`CostOfGoodsAndServicesSold`	$2.09B	USD	Annual
Costs of goods sold	`CostOfGoodsAndServicesSold`	$2.04B	USD	Annual
Costs of goods sold	`CostOfGoodsAndServicesSold`	$2.04B	USD	Annual
Costs of goods sold	`CostOfGoodsAndServicesSold`	$2.73B	USD	Annual
Costs of goods sold	`CostOfGoodsAndServicesSold`	$2.73B	USD	Annual
Gross profit	`GrossProfit`	$91.90M	USD	Annual
Gross profit	`GrossProfit`	$91.90M	USD	Annual
Gross profit	`GrossProfit`	$46.70M	USD	Annual
Gross profit	`GrossProfit`	$46.70M	USD	Annual
Gross profit	`GrossProfit`	$185.00M	USD	Annual
Gross profit	`GrossProfit`	$185.00M	USD	Annual
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$37.50M	USD	Annual
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$37.50M	USD	Annual
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$44.30M	USD	Annual
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$44.30M	USD	Annual
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$56.80M	USD	Annual
Selling, general and administrative expenses	`SellingGeneralAndAdministrativeExpense`	$56.80M	USD	Annual
Asset impairment	`AssetImpairmentCharges`	-	USD	Annual
Asset impairment	`AssetImpairmentCharges`	-	USD	Annual
Asset impairment	`AssetImpairmentCharges`	-	USD	Annual
Asset impairment	`AssetImpairmentCharges`	-	USD	Annual
Asset impairment	`AssetImpairmentCharges`	$159.40M	USD	Annual
Asset impairment	`AssetImpairmentCharges`	$159.40M	USD	Annual
Other operating expense - net	`OtherOperatingIncomeExpenseNet`	-	USD	Annual
Other operating expense - net	`OtherOperatingIncomeExpenseNet`	-	USD	Annual
Other operating expense - net	`OtherOperatingIncomeExpenseNet`	$-6.80M	USD	Annual
Other operating expense - net	`OtherOperatingIncomeExpenseNet`	$-6.80M	USD	Annual
Other operating expense - net	`OtherOperatingIncomeExpenseNet`	$-15.80M	USD	Annual
Other operating expense - net	`OtherOperatingIncomeExpenseNet`	$-15.80M	USD	Annual
Operating income (loss)	`OperatingIncomeLoss`	$31.80M	USD	Annual
Operating income (loss)	`OperatingIncomeLoss`	$31.80M	USD	Annual
Operating income (loss)	`OperatingIncomeLoss`	$121.40M	USD	Annual
Operating income (loss)	`OperatingIncomeLoss`	$121.40M	USD	Annual
Operating income (loss)	`OperatingIncomeLoss`	$-150.20M	USD	Annual
Operating income (loss)	`OperatingIncomeLoss`	$-150.20M	USD	Annual
Interest income	`InterestIncomeOther`	$2.10M	USD	Annual
Interest income	`InterestIncomeOther`	$2.10M	USD	Annual
Interest income	`InterestIncomeOther`	$2.00M	USD	Annual
Interest income	`InterestIncomeOther`	$2.00M	USD	Annual
Interest income	`InterestIncomeOther`	$500.00K	USD	Annual
Interest income	`InterestIncomeOther`	$500.00K	USD	Annual
Net gain (loss) on forward and derivative contracts - nonaffiliates	`GainLossOnDerivativeInstrumentsNetPretax`	$61.80M	USD	Annual
Net gain (loss) on forward and derivative contracts - nonaffiliates	`GainLossOnDerivativeInstrumentsNetPretax`	$61.80M	USD	Annual
Net gain (loss) on forward and derivative contracts - nonaffiliates	`GainLossOnDerivativeInstrumentsNetPretax`	$2.00M	USD	Annual
Net gain (loss) on forward and derivative contracts - nonaffiliates	`GainLossOnDerivativeInstrumentsNetPretax`	$2.00M	USD	Annual
Net gain (loss) on forward and derivative contracts - nonaffiliates	`GainLossOnDerivativeInstrumentsNetPretax`	$197.20M	USD	Annual
Net gain (loss) on forward and derivative contracts - nonaffiliates	`GainLossOnDerivativeInstrumentsNetPretax`	$197.20M	USD	Annual
Bargain purchase gain	`BusinessCombinationBargainPurchaseGainRecognizedAmount`	-	USD	Annual
Bargain purchase gain	`BusinessCombinationBargainPurchaseGainRecognizedAmount`	-	USD	Annual
Bargain purchase gain	`BusinessCombinationBargainPurchaseGainRecognizedAmount`	-	USD	Annual
Bargain purchase gain	`BusinessCombinationBargainPurchaseGainRecognizedAmount`	-	USD	Annual
Bargain purchase gain	`BusinessCombinationBargainPurchaseGainRecognizedAmount`	$245.90M	USD	Annual
Bargain purchase gain	`BusinessCombinationBargainPurchaseGainRecognizedAmount`	$245.90M	USD	Annual
Other income (loss) - net	`OtherNonoperatingIncomeExpense`	$-3.30M	USD	Annual
Other income (loss) - net	`OtherNonoperatingIncomeExpense`	$-3.30M	USD	Annual
Other income (loss) - net	`OtherNonoperatingIncomeExpense`	$15.30M	USD	Annual
Other income (loss) - net	`OtherNonoperatingIncomeExpense`	$15.30M	USD	Annual
Other income (loss) - net	`OtherNonoperatingIncomeExpense`	$-4.50M	USD	Annual
Other income (loss) - net	`OtherNonoperatingIncomeExpense`	$-4.50M	USD	Annual
Income (loss) before income taxes	`IncomeLossIncludingPortionAttributableToNoncontrollingInterest`	$323.80M	USD	Annual
Income (loss) before income taxes	`IncomeLossIncludingPortionAttributableToNoncontrollingInterest`	$323.80M	USD	Annual
Income (loss) before income taxes	`IncomeLossIncludingPortionAttributableToNoncontrollingInterest`	$-66.80M	USD	Annual
Income (loss) before income taxes	`IncomeLossIncludingPortionAttributableToNoncontrollingInterest`	$-66.80M	USD	Annual
Income (loss) before income taxes	`IncomeLossIncludingPortionAttributableToNoncontrollingInterest`	$33.40M	USD	Annual
Income (loss) before income taxes	`IncomeLossIncludingPortionAttributableToNoncontrollingInterest`	$33.40M	USD	Annual
Income tax benefit (expense)	`IncomeTaxExpenseBenefit`	$3.20M	USD	Annual
Income tax benefit (expense)	`IncomeTaxExpenseBenefit`	$3.20M	USD	Annual
Income tax benefit (expense)	`IncomeTaxExpenseBenefit`	$-14.60M	USD	Annual
Income tax benefit (expense)	`IncomeTaxExpenseBenefit`	$-14.60M	USD	Annual
Income tax benefit (expense)	`IncomeTaxExpenseBenefit`	$47.40M	USD	Annual
Income tax benefit (expense)	`IncomeTaxExpenseBenefit`	$47.40M	USD	Annual
Income (loss) before equity in earnings of joint ventures	`IncomeLossAfterIncomeTaxesBeforeIncomeLossFromEquityMethodInvestments`	$-14.00M	USD	Annual
Income (loss) before equity in earnings of joint ventures	`IncomeLossAfterIncomeTaxesBeforeIncomeLossFromEquityMethodInvestments`	$-14.00M	USD	Annual
Income (loss) before equity in earnings of joint ventures	`IncomeLossAfterIncomeTaxesBeforeIncomeLossFromEquityMethodInvestments`	$-52.20M	USD	Annual
Income (loss) before equity in earnings of joint ventures	`IncomeLossAfterIncomeTaxesBeforeIncomeLossFromEquityMethodInvestments`	$-52.20M	USD	Annual
Income (loss) before equity in earnings of joint ventures	`IncomeLossAfterIncomeTaxesBeforeIncomeLossFromEquityMethodInvestments`	$320.60M	USD	Annual
Income (loss) before equity in earnings of joint ventures	`IncomeLossAfterIncomeTaxesBeforeIncomeLossFromEquityMethodInvestments`	$320.60M	USD	Annual
Equity in losses of joint ventures	`IncomeLossFromEquityMethodInvestments`	$-100.00K	USD	Annual
Equity in losses of joint ventures	`IncomeLossFromEquityMethodInvestments`	$-100.00K	USD	Annual
Equity in losses of joint ventures	`IncomeLossFromEquityMethodInvestments`	$-100.00K	USD	Annual
Equity in losses of joint ventures	`IncomeLossFromEquityMethodInvestments`	$-100.00K	USD	Annual
Equity in losses of joint ventures	`IncomeLossFromEquityMethodInvestments`	$100.00K	USD	Annual
Equity in losses of joint ventures	`IncomeLossFromEquityMethodInvestments`	$100.00K	USD	Annual
Net Income (loss)	`ProfitLoss`	$-14.10M	USD	Annual
Net Income (loss)	`ProfitLoss`	$-14.10M	USD	Annual
Net Income (loss)	`ProfitLoss`	$320.70M	USD	Annual
Net Income (loss)	`ProfitLoss`	$320.70M	USD	Annual
Net Income (loss)	`ProfitLoss`	$-52.30M	USD	Annual
Net Income (loss)	`ProfitLoss`	$-52.30M	USD	Annual
Net loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$-9.20M	USD	Annual
Net loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$-9.20M	USD	Annual
Net loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$-16.10M	USD	Annual
Net loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$-16.10M	USD	Annual
Net loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	Annual
Net loss attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	Annual
Net income (loss) attributable to Century stockholders	`NetIncomeLoss`	$336.80M	USD	Annual
Net income (loss) attributable to Century stockholders	`NetIncomeLoss`	$336.80M	USD	Annual
Net income (loss) attributable to Century stockholders	`NetIncomeLoss`	$-14.10M	USD	Annual
Net income (loss) attributable to Century stockholders	`NetIncomeLoss`	$-14.10M	USD	Annual
Net income (loss) attributable to Century stockholders	`NetIncomeLoss`	$-43.10M	USD	Annual
Net income (loss) attributable to Century stockholders	`NetIncomeLoss`	$-43.10M	USD	Annual
Less: net income allocated to participating securities	`UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic`	-	USD	Annual
Less: net income allocated to participating securities	`UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic`	-	USD	Annual
Less: net income allocated to participating securities	`UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic`	-	USD	Annual
Less: net income allocated to participating securities	`UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic`	-	USD	Annual
Less: net income allocated to participating securities	`UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic`	$17.90M	USD	Annual
Less: net income allocated to participating securities	`UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic`	$17.90M	USD	Annual
Net income (loss) allocated to common stockholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$-43.10M	USD	Annual
Net income (loss) allocated to common stockholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$-43.10M	USD	Annual
Net income (loss) allocated to common stockholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$318.90M	USD	Annual
Net income (loss) allocated to common stockholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$318.90M	USD	Annual
Net income (loss) allocated to common stockholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$-14.10M	USD	Annual
Net income (loss) allocated to common stockholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$-14.10M	USD	Annual
Basic (in dollars per share)	`EarningsPerShareBasic`	$3.44	USD	Annual
Basic (in dollars per share)	`EarningsPerShareBasic`	$3.44	USD	Annual
Basic (in dollars per share)	`EarningsPerShareBasic`	$-0.15	USD	Annual
Basic (in dollars per share)	`EarningsPerShareBasic`	$-0.15	USD	Annual
Basic (in dollars per share)	`EarningsPerShareBasic`	$-0.47	USD	Annual
Basic (in dollars per share)	`EarningsPerShareBasic`	$-0.47	USD	Annual
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$-0.15	USD	Annual
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$-0.15	USD	Annual
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$3.27	USD	Annual
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$3.27	USD	Annual
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$-0.47	USD	Annual
Diluted (in dollars per share)	`EarningsPerShareDiluted`	$-0.47	USD	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	91.40M	shares	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	91.40M	shares	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	92.80M	shares	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	92.80M	shares	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	92.40M	shares	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	92.40M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	91.40M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	91.40M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	92.40M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	92.40M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	98.40M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	98.40M	shares	Annual

Cash Flow Statement 250 line items

Line Item	Tag	Value	Unit	Period
Net Income (loss)	`ProfitLoss`	$-14.10M	USD	Annual
Net Income (loss)	`ProfitLoss`	$-14.10M	USD	Annual
Net Income (loss)	`ProfitLoss`	$320.70M	USD	Annual
Net Income (loss)	`ProfitLoss`	$320.70M	USD	Annual
Net Income (loss)	`ProfitLoss`	$-52.30M	USD	Annual
Net Income (loss)	`ProfitLoss`	$-52.30M	USD	Annual
Lower of cost or NRV inventory adjustment	`InventoryWriteDown`	$2.30M	USD	Annual
Lower of cost or NRV inventory adjustment	`InventoryWriteDown`	$2.30M	USD	Annual
Lower of cost or NRV inventory adjustment	`InventoryWriteDown`	-	USD	Annual
Lower of cost or NRV inventory adjustment	`InventoryWriteDown`	-	USD	Annual
Lower of cost or NRV inventory adjustment	`InventoryWriteDown`	$39.60M	USD	Annual
Lower of cost or NRV inventory adjustment	`InventoryWriteDown`	$39.60M	USD	Annual
Unrealized (gain) loss on derivative instruments	`UnrealizedGainLossOnDerivatives`	$5.00M	USD	Annual
Unrealized (gain) loss on derivative instruments	`UnrealizedGainLossOnDerivatives`	$5.00M	USD	Annual
Unrealized (gain) loss on derivative instruments	`UnrealizedGainLossOnDerivatives`	$201.50M	USD	Annual
Unrealized (gain) loss on derivative instruments	`UnrealizedGainLossOnDerivatives`	$201.50M	USD	Annual
Unrealized (gain) loss on derivative instruments	`UnrealizedGainLossOnDerivatives`	$-87.10M	USD	Annual
Unrealized (gain) loss on derivative instruments	`UnrealizedGainLossOnDerivatives`	$-87.10M	USD	Annual
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$81.80M	USD	Annual
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$81.80M	USD	Annual
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$74.70M	USD	Annual
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$74.70M	USD	Annual
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$73.40M	USD	Annual
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$73.40M	USD	Annual
Change in deferred tax (benefit) provision	`DeferredIncomeTaxesAndTaxCredits`	$-30.80M	USD	Annual
Change in deferred tax (benefit) provision	`DeferredIncomeTaxesAndTaxCredits`	$-30.80M	USD	Annual
Change in deferred tax (benefit) provision	`DeferredIncomeTaxesAndTaxCredits`	$44.20M	USD	Annual
Change in deferred tax (benefit) provision	`DeferredIncomeTaxesAndTaxCredits`	$44.20M	USD	Annual
Change in deferred tax (benefit) provision	`DeferredIncomeTaxesAndTaxCredits`	$-1.30M	USD	Annual
Change in deferred tax (benefit) provision	`DeferredIncomeTaxesAndTaxCredits`	$-1.30M	USD	Annual
Asset impairment	`AssetImpairmentCharges`	-	USD	Annual
Asset impairment	`AssetImpairmentCharges`	-	USD	Annual
Asset impairment	`AssetImpairmentCharges`	-	USD	Annual
Asset impairment	`AssetImpairmentCharges`	-	USD	Annual
Asset impairment	`AssetImpairmentCharges`	$159.40M	USD	Annual
Asset impairment	`AssetImpairmentCharges`	$159.40M	USD	Annual
Gain on sale of assets	`GainLossOnSaleOfOtherAssets`	$2.30M	USD	Annual
Gain on sale of assets	`GainLossOnSaleOfOtherAssets`	$2.30M	USD	Annual
Gain on sale of assets	`GainLossOnSaleOfOtherAssets`	-	USD	Annual
Gain on sale of assets	`GainLossOnSaleOfOtherAssets`	-	USD	Annual
Gain on sale of assets	`GainLossOnSaleOfOtherAssets`	-	USD	Annual
Gain on sale of assets	`GainLossOnSaleOfOtherAssets`	-	USD	Annual
Bargain purchase gain	`BusinessCombinationBargainPurchaseGainRecognizedAmount`	-	USD	Annual
Bargain purchase gain	`BusinessCombinationBargainPurchaseGainRecognizedAmount`	-	USD	Annual
Bargain purchase gain	`BusinessCombinationBargainPurchaseGainRecognizedAmount`	-	USD	Annual
Bargain purchase gain	`BusinessCombinationBargainPurchaseGainRecognizedAmount`	-	USD	Annual
Bargain purchase gain	`BusinessCombinationBargainPurchaseGainRecognizedAmount`	$245.90M	USD	Annual
Bargain purchase gain	`BusinessCombinationBargainPurchaseGainRecognizedAmount`	$245.90M	USD	Annual
Force majeure settlement	`ForceMajeureSettlementExpense`	$-12.30M	USD	Annual
Force majeure settlement	`ForceMajeureSettlementExpense`	$-12.30M	USD	Annual
Force majeure settlement	`ForceMajeureSettlementExpense`	-	USD	Annual
Force majeure settlement	`ForceMajeureSettlementExpense`	-	USD	Annual
Force majeure settlement	`ForceMajeureSettlementExpense`	-	USD	Annual
Force majeure settlement	`ForceMajeureSettlementExpense`	-	USD	Annual
Other postretirement benefits gain, net	`OtherPostretirementBenefitsExpenseReversalOfExpenseNoncash`	$-8.90M	USD	Annual
Other postretirement benefits gain, net	`OtherPostretirementBenefitsExpenseReversalOfExpenseNoncash`	$-8.90M	USD	Annual
Other postretirement benefits gain, net	`OtherPostretirementBenefitsExpenseReversalOfExpenseNoncash`	-	USD	Annual
Other postretirement benefits gain, net	`OtherPostretirementBenefitsExpenseReversalOfExpenseNoncash`	-	USD	Annual
Other postretirement benefits gain, net	`OtherPostretirementBenefitsExpenseReversalOfExpenseNoncash`	-	USD	Annual
Other postretirement benefits gain, net	`OtherPostretirementBenefitsExpenseReversalOfExpenseNoncash`	-	USD	Annual
Other non-cash items - net	`OtherNoncashIncomeExpense`	$22.80M	USD	Annual
Other non-cash items - net	`OtherNoncashIncomeExpense`	$22.80M	USD	Annual
Other non-cash items - net	`OtherNoncashIncomeExpense`	$-9.10M	USD	Annual
Other non-cash items - net	`OtherNoncashIncomeExpense`	$-9.10M	USD	Annual
Other non-cash items - net	`OtherNoncashIncomeExpense`	$-3.40M	USD	Annual
Other non-cash items - net	`OtherNoncashIncomeExpense`	$-3.40M	USD	Annual
Accounts receivable - net	`IncreaseDecreaseInAccountsReceivable`	$-13.70M	USD	Annual
Accounts receivable - net	`IncreaseDecreaseInAccountsReceivable`	$-13.70M	USD	Annual
Accounts receivable - net	`IncreaseDecreaseInAccountsReceivable`	$18.30M	USD	Annual
Accounts receivable - net	`IncreaseDecreaseInAccountsReceivable`	$18.30M	USD	Annual
Accounts receivable - net	`IncreaseDecreaseInAccountsReceivable`	$-36.90M	USD	Annual
Accounts receivable - net	`IncreaseDecreaseInAccountsReceivable`	$-36.90M	USD	Annual
Non-trade receivables	`IncreaseDecreaseInNontradeReceivables`	$-31.50M	USD	Annual
Non-trade receivables	`IncreaseDecreaseInNontradeReceivables`	$-31.50M	USD	Annual
Non-trade receivables	`IncreaseDecreaseInNontradeReceivables`	-	USD	Annual
Non-trade receivables	`IncreaseDecreaseInNontradeReceivables`	-	USD	Annual
Non-trade receivables	`IncreaseDecreaseInNontradeReceivables`	$-4.10M	USD	Annual
Non-trade receivables	`IncreaseDecreaseInNontradeReceivables`	$-4.10M	USD	Annual
Manufacturing credit receivable	`IncreaseDecreaseInManufacturingCreditsReceivable`	$59.30M	USD	Annual
Manufacturing credit receivable	`IncreaseDecreaseInManufacturingCreditsReceivable`	$59.30M	USD	Annual
Manufacturing credit receivable	`IncreaseDecreaseInManufacturingCreditsReceivable`	$92.60M	USD	Annual
Manufacturing credit receivable	`IncreaseDecreaseInManufacturingCreditsReceivable`	$92.60M	USD	Annual
Manufacturing credit receivable	`IncreaseDecreaseInManufacturingCreditsReceivable`	-	USD	Annual
Manufacturing credit receivable	`IncreaseDecreaseInManufacturingCreditsReceivable`	-	USD	Annual
Due from affiliates	`IncreaseDecreaseInDueFromRelatedPartiesCurrent`	$-3.60M	USD	Annual
Due from affiliates	`IncreaseDecreaseInDueFromRelatedPartiesCurrent`	$-3.60M	USD	Annual
Due from affiliates	`IncreaseDecreaseInDueFromRelatedPartiesCurrent`	$15.50M	USD	Annual
Due from affiliates	`IncreaseDecreaseInDueFromRelatedPartiesCurrent`	$15.50M	USD	Annual
Due from affiliates	`IncreaseDecreaseInDueFromRelatedPartiesCurrent`	$4.90M	USD	Annual
Due from affiliates	`IncreaseDecreaseInDueFromRelatedPartiesCurrent`	$4.90M	USD	Annual
Inventories	`IncreaseDecreaseInInventories`	$-25.80M	USD	Annual
Inventories	`IncreaseDecreaseInInventories`	$-25.80M	USD	Annual
Inventories	`IncreaseDecreaseInInventories`	$12.80M	USD	Annual
Inventories	`IncreaseDecreaseInInventories`	$12.80M	USD	Annual
Inventories	`IncreaseDecreaseInInventories`	$64.30M	USD	Annual
Inventories	`IncreaseDecreaseInInventories`	$64.30M	USD	Annual
Prepaid and other current assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$-2.90M	USD	Annual
Prepaid and other current assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$-2.90M	USD	Annual
Prepaid and other current assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$-1.00M	USD	Annual
Prepaid and other current assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$-1.00M	USD	Annual
Prepaid and other current assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$-5.60M	USD	Annual
Prepaid and other current assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$-5.60M	USD	Annual
Accounts payable, trade	`IncreaseDecreaseInAccountsPayableTrade`	$-19.40M	USD	Annual
Accounts payable, trade	`IncreaseDecreaseInAccountsPayableTrade`	$-19.40M	USD	Annual
Accounts payable, trade	`IncreaseDecreaseInAccountsPayableTrade`	$-50.60M	USD	Annual
Accounts payable, trade	`IncreaseDecreaseInAccountsPayableTrade`	$-50.60M	USD	Annual
Accounts payable, trade	`IncreaseDecreaseInAccountsPayableTrade`	$-15.80M	USD	Annual
Accounts payable, trade	`IncreaseDecreaseInAccountsPayableTrade`	$-15.80M	USD	Annual
Due to affiliates	`IncreaseDecreaseInDueToRelatedPartiesCurrent`	$26.10M	USD	Annual
Due to affiliates	`IncreaseDecreaseInDueToRelatedPartiesCurrent`	$26.10M	USD	Annual
Due to affiliates	`IncreaseDecreaseInDueToRelatedPartiesCurrent`	$-43.50M	USD	Annual
Due to affiliates	`IncreaseDecreaseInDueToRelatedPartiesCurrent`	$-43.50M	USD	Annual
Due to affiliates	`IncreaseDecreaseInDueToRelatedPartiesCurrent`	$51.70M	USD	Annual
Due to affiliates	`IncreaseDecreaseInDueToRelatedPartiesCurrent`	$51.70M	USD	Annual
Accrued and other current liabilities	`IncreaseDecreaseInAccruedLiabilities`	-	USD	Annual
Accrued and other current liabilities	`IncreaseDecreaseInAccruedLiabilities`	-	USD	Annual
Accrued and other current liabilities	`IncreaseDecreaseInAccruedLiabilities`	$8.80M	USD	Annual
Accrued and other current liabilities	`IncreaseDecreaseInAccruedLiabilities`	$8.80M	USD	Annual
Accrued and other current liabilities	`IncreaseDecreaseInAccruedLiabilities`	$-1.20M	USD	Annual
Accrued and other current liabilities	`IncreaseDecreaseInAccruedLiabilities`	$-1.20M	USD	Annual
Ravenswood retiree legal settlement	`IncreaseDecreaseinEstimatedLitigationLiability`	$-2.00M	USD	Annual
Ravenswood retiree legal settlement	`IncreaseDecreaseinEstimatedLitigationLiability`	$-2.00M	USD	Annual
Ravenswood retiree legal settlement	`IncreaseDecreaseinEstimatedLitigationLiability`	$-2.00M	USD	Annual
Ravenswood retiree legal settlement	`IncreaseDecreaseinEstimatedLitigationLiability`	$-2.00M	USD	Annual
Ravenswood retiree legal settlement	`IncreaseDecreaseinEstimatedLitigationLiability`	$-2.00M	USD	Annual
Ravenswood retiree legal settlement	`IncreaseDecreaseinEstimatedLitigationLiability`	$-2.00M	USD	Annual
PBGC settlement	`PensionExpenseReversalOfExpenseNoncash`	$-300.00K	USD	Annual
PBGC settlement	`PensionExpenseReversalOfExpenseNoncash`	$-300.00K	USD	Annual
PBGC settlement	`PensionExpenseReversalOfExpenseNoncash`	$-2.40M	USD	Annual
PBGC settlement	`PensionExpenseReversalOfExpenseNoncash`	$-2.40M	USD	Annual
PBGC settlement	`PensionExpenseReversalOfExpenseNoncash`	$-4.50M	USD	Annual
PBGC settlement	`PensionExpenseReversalOfExpenseNoncash`	$-4.50M	USD	Annual
Other - net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-1.40M	USD	Annual
Other - net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-1.40M	USD	Annual
Other - net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-3.90M	USD	Annual
Other - net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-3.90M	USD	Annual
Other - net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-2.80M	USD	Annual
Other - net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-2.80M	USD	Annual
Net cash (used in) provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$-24.60M	USD	Annual
Net cash (used in) provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$-24.60M	USD	Annual
Net cash (used in) provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$105.60M	USD	Annual
Net cash (used in) provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$105.60M	USD	Annual
Net cash (used in) provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$25.90M	USD	Annual
Net cash (used in) provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$25.90M	USD	Annual
Purchase of property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$95.00M	USD	Annual
Purchase of property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$95.00M	USD	Annual
Purchase of property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$86.30M	USD	Annual
Purchase of property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$86.30M	USD	Annual
Purchase of property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$82.30M	USD	Annual
Purchase of property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$82.30M	USD	Annual
Proceeds from co-tenancy assets at Jamalco JV	`ProceedsFromCoTenancyAssetsInJointVentures`	-	USD	Annual
Proceeds from co-tenancy assets at Jamalco JV	`ProceedsFromCoTenancyAssetsInJointVentures`	-	USD	Annual
Proceeds from co-tenancy assets at Jamalco JV	`ProceedsFromCoTenancyAssetsInJointVentures`	-	USD	Annual
Proceeds from co-tenancy assets at Jamalco JV	`ProceedsFromCoTenancyAssetsInJointVentures`	-	USD	Annual
Proceeds from co-tenancy assets at Jamalco JV	`ProceedsFromCoTenancyAssetsInJointVentures`	$12.70M	USD	Annual
Proceeds from co-tenancy assets at Jamalco JV	`ProceedsFromCoTenancyAssetsInJointVentures`	$12.70M	USD	Annual
Proceeds from sale of property, plant and equipment	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$800.00K	USD	Annual
Proceeds from sale of property, plant and equipment	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$800.00K	USD	Annual
Proceeds from sale of property, plant and equipment	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$25.70M	USD	Annual
Proceeds from sale of property, plant and equipment	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$25.70M	USD	Annual
Proceeds from sale of property, plant and equipment	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$2.30M	USD	Annual
Proceeds from sale of property, plant and equipment	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$2.30M	USD	Annual
Acquisition of subsidiary net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	-	USD	Annual
Acquisition of subsidiary net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	-	USD	Annual
Acquisition of subsidiary net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$-11.50M	USD	Annual
Acquisition of subsidiary net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$-11.50M	USD	Annual
Acquisition of subsidiary net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	-	USD	Annual
Acquisition of subsidiary net of cash acquired	`PaymentsToAcquireBusinessesNetOfCashAcquired`	-	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-85.50M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-85.50M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-57.80M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-57.80M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-67.30M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-67.30M	USD	Annual
Debt issuance cost	`PaymentsOfDebtIssuanceCosts`	$1.50M	USD	Annual
Debt issuance cost	`PaymentsOfDebtIssuanceCosts`	$1.50M	USD	Annual
Debt issuance cost	`PaymentsOfDebtIssuanceCosts`	-	USD	Annual
Debt issuance cost	`PaymentsOfDebtIssuanceCosts`	-	USD	Annual
Debt issuance cost	`PaymentsOfDebtIssuanceCosts`	-	USD	Annual
Debt issuance cost	`PaymentsOfDebtIssuanceCosts`	-	USD	Annual
Carbon credit proceeds	`ProceedsFromCreditSaleFinancingActivities`	-	USD	Annual
Carbon credit proceeds	`ProceedsFromCreditSaleFinancingActivities`	-	USD	Annual
Carbon credit proceeds	`ProceedsFromCreditSaleFinancingActivities`	$36.80M	USD	Annual
Carbon credit proceeds	`ProceedsFromCreditSaleFinancingActivities`	$36.80M	USD	Annual
Carbon credit proceeds	`ProceedsFromCreditSaleFinancingActivities`	-	USD	Annual
Carbon credit proceeds	`ProceedsFromCreditSaleFinancingActivities`	-	USD	Annual
Carbon credit repayments	`RepaymentOfCreditSaleFinancingActivities`	-	USD	Annual
Carbon credit repayments	`RepaymentOfCreditSaleFinancingActivities`	-	USD	Annual
Carbon credit repayments	`RepaymentOfCreditSaleFinancingActivities`	-	USD	Annual
Carbon credit repayments	`RepaymentOfCreditSaleFinancingActivities`	-	USD	Annual
Carbon credit repayments	`RepaymentOfCreditSaleFinancingActivities`	$10.00M	USD	Annual
Carbon credit repayments	`RepaymentOfCreditSaleFinancingActivities`	$10.00M	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-13.00M	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-13.00M	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$74.40M	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$74.40M	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$37.30M	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$37.30M	USD	Annual
CHANGE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$34.80M	USD	Annual
CHANGE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$34.80M	USD	Annual
CHANGE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-54.60M	USD	Annual
CHANGE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-54.60M	USD	Annual
CHANGE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$14.80M	USD	Annual
CHANGE IN CASH, CASH EQUIVALENTS, AND RESTRICTED CASH	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$14.80M	USD	Annual
Cash, cash equivalents and restricted cash, beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$90.30M	USD	Point-in-time
Cash, cash equivalents and restricted cash, beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$90.30M	USD	Point-in-time
Cash, cash equivalents and restricted cash, beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$55.50M	USD	Point-in-time
Cash, cash equivalents and restricted cash, beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$55.50M	USD	Point-in-time
Cash, cash equivalents and restricted cash, beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$35.70M	USD	Point-in-time
Cash, cash equivalents and restricted cash, beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$35.70M	USD	Point-in-time
Cash, cash equivalents and restricted cash, beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$40.70M	USD	Point-in-time
Cash, cash equivalents and restricted cash, beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$40.70M	USD	Point-in-time
Cash, cash equivalents and restricted cash, end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$90.30M	USD	Point-in-time
Cash, cash equivalents and restricted cash, end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$90.30M	USD	Point-in-time
Cash, cash equivalents and restricted cash, end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$55.50M	USD	Point-in-time
Cash, cash equivalents and restricted cash, end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$55.50M	USD	Point-in-time
Cash, cash equivalents and restricted cash, end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$35.70M	USD	Point-in-time
Cash, cash equivalents and restricted cash, end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$35.70M	USD	Point-in-time
Cash, cash equivalents and restricted cash, end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$40.70M	USD	Point-in-time
Cash, cash equivalents and restricted cash, end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$40.70M	USD	Point-in-time
Interest	`InterestPaidNet`	$27.00M	USD	Annual
Interest	`InterestPaidNet`	$27.00M	USD	Annual
Interest	`InterestPaidNet`	$35.20M	USD	Annual
Interest	`InterestPaidNet`	$35.20M	USD	Annual
Interest	`InterestPaidNet`	$36.00M	USD	Annual
Interest	`InterestPaidNet`	$36.00M	USD	Annual
Taxes, net of refunds	`IncomeTaxesPaidNet`	$14.50M	USD	Annual
Taxes, net of refunds	`IncomeTaxesPaidNet`	$14.50M	USD	Annual
Taxes, net of refunds	`IncomeTaxesPaidNet`	$5.90M	USD	Annual
Taxes, net of refunds	`IncomeTaxesPaidNet`	$5.90M	USD	Annual
Taxes, net of refunds	`IncomeTaxesPaidNet`	$900.00K	USD	Annual
Taxes, net of refunds	`IncomeTaxesPaidNet`	$900.00K	USD	Annual
Capital expenditures	`CapitalExpendituresIncurredButNotYetPaidNet`	$12.30M	USD	Annual
Capital expenditures	`CapitalExpendituresIncurredButNotYetPaidNet`	$12.30M	USD	Annual
Capital expenditures	`CapitalExpendituresIncurredButNotYetPaidNet`	$3.70M	USD	Annual
Capital expenditures	`CapitalExpendituresIncurredButNotYetPaidNet`	$3.70M	USD	Annual
Capital expenditures	`CapitalExpendituresIncurredButNotYetPaidNet`	$10.70M	USD	Annual
Capital expenditures	`CapitalExpendituresIncurredButNotYetPaidNet`	$10.70M	USD	Annual
Capitalized interest	`InterestPaidCapitalized`	$4.20M	USD	Annual
Capitalized interest	`InterestPaidCapitalized`	$4.20M	USD	Annual
Capitalized interest	`InterestPaidCapitalized`	$6.00M	USD	Annual
Capitalized interest	`InterestPaidCapitalized`	$6.00M	USD	Annual
Capitalized interest	`InterestPaidCapitalized`	$3.40M	USD	Annual
Capitalized interest	`InterestPaidCapitalized`	$3.40M	USD	Annual
Distribution of fixed assets to NCI	`DistributionOfPropertyPlantAndEquipmentToNoncontrollingInterestNoncash`	-	USD	Annual
Distribution of fixed assets to NCI	`DistributionOfPropertyPlantAndEquipmentToNoncontrollingInterestNoncash`	-	USD	Annual
Distribution of fixed assets to NCI	`DistributionOfPropertyPlantAndEquipmentToNoncontrollingInterestNoncash`	-	USD	Annual
Distribution of fixed assets to NCI	`DistributionOfPropertyPlantAndEquipmentToNoncontrollingInterestNoncash`	-	USD	Annual
Distribution of fixed assets to NCI	`DistributionOfPropertyPlantAndEquipmentToNoncontrollingInterestNoncash`	$17.00M	USD	Annual
Distribution of fixed assets to NCI	`DistributionOfPropertyPlantAndEquipmentToNoncontrollingInterestNoncash`	$17.00M	USD	Annual

Stockholders Equity 46 line items

Line Item	Tag	Value	Unit	Period
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$399.30M	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$399.30M	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$344.10M	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$344.10M	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$421.00M	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$421.00M	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$662.70M	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$662.70M	USD	Point-in-time
Beginning balance (in shares)	`CommonStockSharesOutstanding`	93.29M	shares	Point-in-time
Beginning balance (in shares)	`CommonStockSharesOutstanding`	93.29M	shares	Point-in-time
Beginning balance (in shares)	`CommonStockSharesOutstanding`	92.69M	shares	Point-in-time
Beginning balance (in shares)	`CommonStockSharesOutstanding`	92.69M	shares	Point-in-time
Net Income (loss)	`ProfitLoss`	$-14.10M	USD	Annual
Net Income (loss)	`ProfitLoss`	$-14.10M	USD	Annual
Net Income (loss)	`ProfitLoss`	$320.70M	USD	Annual
Net Income (loss)	`ProfitLoss`	$320.70M	USD	Annual
Net Income (loss)	`ProfitLoss`	$-52.30M	USD	Annual
Net Income (loss)	`ProfitLoss`	$-52.30M	USD	Annual
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-3.90M	USD	Annual
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-3.90M	USD	Annual
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-11.70M	USD	Annual
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-11.70M	USD	Annual
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-5.40M	USD	Annual
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-5.40M	USD	Annual
Share-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$3.30M	USD	Annual
Share-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$3.30M	USD	Annual
Share-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$4.10M	USD	Annual
Share-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$4.10M	USD	Annual
Share-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$7.30M	USD	Annual
Share-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$7.30M	USD	Annual
Noncontrolling interest	`NoncontrollingInterestDecreaseFromBusinessCombination`	$4.00M	USD	Annual
Noncontrolling interest	`NoncontrollingInterestDecreaseFromBusinessCombination`	$4.00M	USD	Annual
Noncontrolling interest	`NoncontrollingInterestDecreaseFromBusinessCombination`	$2.30M	USD	Annual
Noncontrolling interest	`NoncontrollingInterestDecreaseFromBusinessCombination`	$2.30M	USD	Annual
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$399.30M	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$399.30M	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$344.10M	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$344.10M	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$421.00M	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$421.00M	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$662.70M	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$662.70M	USD	Point-in-time
Ending balance (in shares)	`CommonStockSharesOutstanding`	93.29M	shares	Point-in-time
Ending balance (in shares)	`CommonStockSharesOutstanding`	93.29M	shares	Point-in-time
Ending balance (in shares)	`CommonStockSharesOutstanding`	92.69M	shares	Point-in-time
Ending balance (in shares)	`CommonStockSharesOutstanding`	92.69M	shares	Point-in-time

Comprehensive Income 72 line items

Line Item	Tag	Value	Unit	Period
Net income (loss)	`ProfitLoss`	$-14.10M	USD	Annual
Net income (loss)	`ProfitLoss`	$-14.10M	USD	Annual
Net income (loss)	`ProfitLoss`	$320.70M	USD	Annual
Net income (loss)	`ProfitLoss`	$320.70M	USD	Annual
Net income (loss)	`ProfitLoss`	$-52.30M	USD	Annual
Net income (loss)	`ProfitLoss`	$-52.30M	USD	Annual
Net loss on foreign currency cash flow hedges reclassified as income	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax`	$-200.00K	USD	Annual
Net loss on foreign currency cash flow hedges reclassified as income	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax`	$-200.00K	USD	Annual
Net loss on foreign currency cash flow hedges reclassified as income	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax`	$-100.00K	USD	Annual
Net loss on foreign currency cash flow hedges reclassified as income	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax`	$-100.00K	USD	Annual
Net loss on foreign currency cash flow hedges reclassified as income	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax`	$-200.00K	USD	Annual
Net loss on foreign currency cash flow hedges reclassified as income	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax`	$-200.00K	USD	Annual
Net loss arising during the period	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax`	$-10.10M	USD	Annual
Net loss arising during the period	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax`	$-10.10M	USD	Annual
Net loss arising during the period	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax`	$-11.90M	USD	Annual
Net loss arising during the period	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax`	$-11.90M	USD	Annual
Net loss arising during the period	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax`	$-5.90M	USD	Annual
Net loss arising during the period	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax`	$-5.90M	USD	Annual
OPEB curtailment gain, net	`OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationBeforeTax`	-	USD	Annual
OPEB curtailment gain, net	`OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationBeforeTax`	-	USD	Annual
OPEB curtailment gain, net	`OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationBeforeTax`	-	USD	Annual
OPEB curtailment gain, net	`OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationBeforeTax`	-	USD	Annual
OPEB curtailment gain, net	`OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationBeforeTax`	$-8.90M	USD	Annual
OPEB curtailment gain, net	`OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationBeforeTax`	$-8.90M	USD	Annual
Amortization of prior service benefit during the period	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax`	$-1.20M	USD	Annual
Amortization of prior service benefit during the period	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax`	$-1.20M	USD	Annual
Amortization of prior service benefit during the period	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax`	$200.00K	USD	Annual
Amortization of prior service benefit during the period	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax`	$200.00K	USD	Annual
Amortization of prior service benefit during the period	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax`	$100.00K	USD	Annual
Amortization of prior service benefit during the period	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax`	$100.00K	USD	Annual
Amortization of net loss during the period	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax`	$-6.20M	USD	Annual
Amortization of net loss during the period	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax`	$-6.20M	USD	Annual
Amortization of net loss during the period	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax`	$-4.80M	USD	Annual
Amortization of net loss during the period	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax`	$-4.80M	USD	Annual
Amortization of net loss during the period	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax`	$-6.50M	USD	Annual
Amortization of net loss during the period	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax`	$-6.50M	USD	Annual
Other comprehensive (loss) before income tax effect	`OtherComprehensiveIncomeLossBeforeTax`	$-3.90M	USD	Annual
Other comprehensive (loss) before income tax effect	`OtherComprehensiveIncomeLossBeforeTax`	$-3.90M	USD	Annual
Other comprehensive (loss) before income tax effect	`OtherComprehensiveIncomeLossBeforeTax`	$-11.40M	USD	Annual
Other comprehensive (loss) before income tax effect	`OtherComprehensiveIncomeLossBeforeTax`	$-11.40M	USD	Annual
Other comprehensive (loss) before income tax effect	`OtherComprehensiveIncomeLossBeforeTax`	$-5.40M	USD	Annual
Other comprehensive (loss) before income tax effect	`OtherComprehensiveIncomeLossBeforeTax`	$-5.40M	USD	Annual
Income tax effect	`OtherComprehensiveIncomeLossTax`	-	USD	Annual
Income tax effect	`OtherComprehensiveIncomeLossTax`	-	USD	Annual
Income tax effect	`OtherComprehensiveIncomeLossTax`	$300.00K	USD	Annual
Income tax effect	`OtherComprehensiveIncomeLossTax`	$300.00K	USD	Annual
Income tax effect	`OtherComprehensiveIncomeLossTax`	-	USD	Annual
Income tax effect	`OtherComprehensiveIncomeLossTax`	-	USD	Annual
Other comprehensive (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-3.90M	USD	Annual
Other comprehensive (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-3.90M	USD	Annual
Other comprehensive (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-11.70M	USD	Annual
Other comprehensive (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-11.70M	USD	Annual
Other comprehensive (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-5.40M	USD	Annual
Other comprehensive (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-5.40M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$315.30M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$315.30M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-56.20M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-56.20M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-25.80M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-25.80M	USD	Annual
Comprehensive loss attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	-	USD	Annual
Comprehensive loss attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	-	USD	Annual
Comprehensive loss attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-16.10M	USD	Annual
Comprehensive loss attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-16.10M	USD	Annual
Comprehensive loss attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-9.20M	USD	Annual
Comprehensive loss attributable to noncontrolling interests	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-9.20M	USD	Annual
Comprehensive income (loss) attributable to Century stockholders	`ComprehensiveIncomeNetOfTax`	$-25.80M	USD	Annual
Comprehensive income (loss) attributable to Century stockholders	`ComprehensiveIncomeNetOfTax`	$-25.80M	USD	Annual
Comprehensive income (loss) attributable to Century stockholders	`ComprehensiveIncomeNetOfTax`	$-47.00M	USD	Annual
Comprehensive income (loss) attributable to Century stockholders	`ComprehensiveIncomeNetOfTax`	$-47.00M	USD	Annual
Comprehensive income (loss) attributable to Century stockholders	`ComprehensiveIncomeNetOfTax`	$331.40M	USD	Annual
Comprehensive income (loss) attributable to Century stockholders	`ComprehensiveIncomeNetOfTax`	$331.40M	USD	Annual

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