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v2.4.1.9

Supplemental Balance Sheet Information (Details) (USD $) In Millions, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
--- | --- | --- | --- | --- | ---
Cash and Cash Equivalents |  |  |  |  |
Total | $ 177.7 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 169.5 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 273.4 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 49.8 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 49.8 us-gaap_CashAndCashEquivalentsAtCarryingValue
Trade Receivables - Net |  |  |  |  |
Billed trade receivables | 128.7 us-gaap_BilledContractReceivables | 120.2 us-gaap_BilledContractReceivables |  |  |
Unbilled trade receivables — Note 1 | 1.4 us-gaap_UnbilledContractsReceivable | 0.4 us-gaap_UnbilledContractsReceivable |  |  |
Trade receivables, gross | 130.1 us-gaap_AccountsReceivableGrossCurrent | 120.6 us-gaap_AccountsReceivableGrossCurrent |  |  |
Allowance for doubtful receivables | (0.8)us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent | (0.8)us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent |  |  |
Trade receivables - net | 129.3 us-gaap_AccountsReceivableNetCurrent | 119.8 us-gaap_AccountsReceivableNetCurrent |  |  |
Inventories |  |  |  |  |
Finished products | 73.6 us-gaap_InventoryFinishedGoods | 72.5 us-gaap_InventoryFinishedGoods |  |  |
Work-in-process | 66.7 us-gaap_InventoryWorkInProcess | 75.9 us-gaap_InventoryWorkInProcess |  |  |
Raw materials | 54.2 us-gaap_InventoryRawMaterials | 47.2 us-gaap_InventoryRawMaterials |  |  |
Operating supplies and repair and maintenance parts | 20.2 us-gaap_OtherInventorySupplies | 18.8 us-gaap_OtherInventorySupplies |  |  |
Total | 214.7 us-gaap_InventoryNet | 214.4 us-gaap_InventoryNet |  |  |
Prepaid Expenses and Other Current Assets |  |  |  |  |
Current derivative assets — Notes 10 and 11 | 85.7 us-gaap_DerivativeAssetsCurrent | 2.0 us-gaap_DerivativeAssetsCurrent |  |  |
Current deferred tax assets | 86.4 us-gaap_DeferredTaxAssetsNetCurrent | 36.7 us-gaap_DeferredTaxAssetsNetCurrent |  |  |
Short-term restricted cash | 0.3 us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue | 0.3 us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue |  |  |
Other | 6.2 us-gaap_PrepaidExpenseCurrent | 5.2 us-gaap_PrepaidExpenseCurrent |  |  |
Total | 178.6 us-gaap_PrepaidExpenseAndOtherAssetsCurrent | 44.2 us-gaap_PrepaidExpenseAndOtherAssetsCurrent |  |  |
Property, Plant and Equipment - Net |  |  |  |  |
Land and improvements | 22.9 us-gaap_Land | 22.6 us-gaap_Land |  |  |
Buildings and leasehold improvements | 63.8 us-gaap_BuildingsAndImprovementsGross | 53.0 us-gaap_BuildingsAndImprovementsGross |  |  |
Machinery and equipment | 509.8 us-gaap_MachineryAndEquipmentGross | 425.6 us-gaap_MachineryAndEquipmentGross |  |  |
Construction in progress | 25.2 us-gaap_ConstructionInProgressGross | 66.0 us-gaap_ConstructionInProgressGross |  |  |
Property, plant and equipment - gross | 621.7 us-gaap_PropertyPlantAndEquipmentGross | 567.2 us-gaap_PropertyPlantAndEquipmentGross |  |  |
Accumulated depreciation | (166.8)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment | (137.9)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment |  |  |
Property, plant and equipment - net | 454.9 us-gaap_PropertyPlantAndEquipmentNet | 429.3 us-gaap_PropertyPlantAndEquipmentNet |  |  |
Other Assets |  |  |  |  |
Derivative assets — Notes 10 and 11 | 0 us-gaap_DerivativeAssetsNoncurrent | 79.8 us-gaap_DerivativeAssetsNoncurrent |  |  |
Restricted cash | 10.0 us-gaap_RestrictedCashAndCashEquivalentsNoncurrent | 9.3 us-gaap_RestrictedCashAndCashEquivalentsNoncurrent |  |  |
Deferred financing costs | 5.9 us-gaap_DeferredFinanceCostsNoncurrentNet | 8.9 us-gaap_DeferredFinanceCostsNoncurrentNet |  |  |
Deferred compensation plan assets | 7.3 us-gaap_DeferredCompensationPlanAssets | 6.5 us-gaap_DeferredCompensationPlanAssets |  |  |
Other | 0.1 us-gaap_OtherAssets | 0.3 us-gaap_OtherAssets |  |  |
Total | 23.3 us-gaap_OtherAssetsNoncurrent | 104.8 us-gaap_OtherAssetsNoncurrent |  |  |
Other Accrued Liabilities |  |  |  |  |
Current derivative liabilities — Notes 10 and 11 | 94.9 us-gaap_DerivativeLiabilitiesCurrent | 1.8 us-gaap_DerivativeLiabilitiesCurrent |  |  |
Uncleared cash disbursements | 9.1 us-gaap_BankOverdrafts | 9.6 us-gaap_BankOverdrafts |  |  |
Accrued income taxes and taxes payable | 5.2 us-gaap_TaxesPayableCurrent | 4.3 us-gaap_TaxesPayableCurrent |  |  |
Accrued annual VEBA contribution | 13.7 kalu_AccruedAnnualVebaContribution | 16.0 kalu_AccruedAnnualVebaContribution |  |  |
Short-term environmental accrual — Note 9 | 2.3 us-gaap_AccruedEnvironmentalLossContingenciesCurrent | 2.8 us-gaap_AccruedEnvironmentalLossContingenciesCurrent |  |  |
Accrued interest | 3.7 us-gaap_InterestPayableCurrent | 3.7 us-gaap_InterestPayableCurrent |  |  |
Short-term deferred revenue — Note 1 | 0.2 us-gaap_DeferredRevenueCurrent | 0 us-gaap_DeferredRevenueCurrent |  |  |
Other | 3.7 us-gaap_AccruedLiabilitiesAndOtherLiabilities | 6.6 us-gaap_AccruedLiabilitiesAndOtherLiabilities |  |  |
Total | 132.8 us-gaap_OtherAccruedLiabilitiesCurrent | 44.8 us-gaap_OtherAccruedLiabilitiesCurrent |  |  |
Long-Term Liabilities |  |  |  |  |
Derivative liabilities — Notes 10 and 11 | 1.9 us-gaap_DerivativeLiabilitiesNoncurrent | 84.3 us-gaap_DerivativeLiabilitiesNoncurrent |  |  |
Income tax liabilities | 2.4 kalu_UnrecognizedTaxBenefitsAndIncomeTaxPenaltiesAndInterestAccruedNoncurrent | 5.0 kalu_UnrecognizedTaxBenefitsAndIncomeTaxPenaltiesAndInterestAccruedNoncurrent |  |  |
Workers’ compensation accruals | 21.5 us-gaap_SelfInsuranceReserveNoncurrent | 23.3 us-gaap_SelfInsuranceReserveNoncurrent |  |  |
Long-term environmental accrual — Note 9 | 17.0 us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent | 20.0 us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent |  |  |
Long-term asset retirement obligations | 4.4 us-gaap_AssetRetirementObligationsNoncurrent | 4.0 us-gaap_AssetRetirementObligationsNoncurrent |  |  |
Long-term deferred revenue - Note 1 | 0.5 us-gaap_DeferredRevenueNoncurrent | 0 us-gaap_DeferredRevenueNoncurrent |  |  |
Deferred compensation liability | 7.2 us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent | 7.0 us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent |  |  |
Long-term capital leases | 0.1 us-gaap_CapitalLeaseObligationsNoncurrent | 0.1 us-gaap_CapitalLeaseObligationsNoncurrent |  |  |
Other long-term liabilities | 3.3 us-gaap_OtherLiabilities | 2.7 us-gaap_OtherLiabilities |  |  |
Total | 58.3 us-gaap_OtherLiabilitiesNoncurrent | 146.4 us-gaap_OtherLiabilitiesNoncurrent |  |  |
Long-Term Debt — Note 3 |  |  |  |  |
Senior notes | 225.0 us-gaap_DebtInstrumentFaceAmount | 225.0 us-gaap_DebtInstrumentFaceAmount |  |  |
Cash convertible senior notes | 0 us-gaap_ConvertibleDebt | 163.5 us-gaap_ConvertibleDebt |  |  |
Total | 225.0 us-gaap_LongTermDebtNoncurrent | 388.5 us-gaap_LongTermDebtNoncurrent |  |  |
Fair Value, Measurements, Recurring [Member] |  |  |  |  |
Other Assets |  |  |  |  |
Deferred compensation plan assets | 7.3 us-gaap_DeferredCompensationPlanAssets / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember | 6.5 us-gaap_DeferredCompensationPlanAssets / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember |  |  |
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member] |  |  |  |  |
Cash and Cash Equivalents |  |  |  |  |
Cash and money market funds | 29.5 us-gaap_Cash / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember | 57.7 us-gaap_Cash / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember |  |  |
Other Assets |  |  |  |  |
Deferred compensation plan assets | 0 us-gaap_DeferredCompensationPlanAssets / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember | 0 us-gaap_DeferredCompensationPlanAssets / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel1Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember |  |  |
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] |  |  |  |  |
Cash and Cash Equivalents |  |  |  |  |
Commercial paper | 148.2 us-gaap_CommercialPaperAtCarryingValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember | 111.8 us-gaap_CommercialPaperAtCarryingValue / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember |  |  |
Other Assets |  |  |  |  |
Deferred compensation plan assets | $ 7.3 us-gaap_DeferredCompensationPlanAssets / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember | $ 6.5 us-gaap_DeferredCompensationPlanAssets / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member / us-gaap_FairValueByMeasurementFrequencyAxis = us-gaap_FairValueMeasurementsRecurringMember |  |  |

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