$KALU
KAISER ALUMINUM CORP Stock $kalu

$kalu Overview Financials Valuation SEC Filings Company Website

2014 Q1 Form 10-Q Financial Statement

#000081159614000021 Filed on April 25, 2014

Income Statement

Concept	2014 Q1	2013 Q1
Revenue	$335.1M	$337.4M
YoY Change	-0.68%	-7.66%
Cost Of Revenue	$282.9M	$263.6M
YoY Change	7.32%	-11.57%
Gross Profit	$54.20M	$73.10M
YoY Change	-25.85%	3.84%
Gross Profit Margin	16.17%	21.67%
Selling, General & Admin	$20.30M	$16.10M
YoY Change	26.09%	-10.06%
% of Gross Profit	37.45%	22.02%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$7.400M	$7.000M
YoY Change	5.71%	11.11%
% of Gross Profit	13.65%	9.58%
Operating Expenses	$22.10M	$23.10M
YoY Change	-4.33%	-4.55%
Operating Profit	$32.10M	$50.00M
YoY Change	-35.8%	8.23%
Interest Expense	$8.800M	$9.300M
YoY Change	-5.38%	126.83%
% of Operating Profit	27.41%	18.6%
Other Income/Expense, Net	$1.900M	$1.000M
YoY Change	90.0%	42.86%
Pretax Income	$25.20M	$41.70M
YoY Change	-39.57%	-2.57%
Income Tax	$9.400M	$8.200M
% Of Pretax Income	37.3%	19.66%
Net Earnings	$15.80M	$33.50M
YoY Change	-52.84%	26.42%
Net Earnings / Revenue	4.72%	9.93%
Basic Earnings Per Share	$0.88	$1.75
Diluted Earnings Per Share	$0.85	$1.73
COMMON SHARES
Basic Shares Outstanding	17.92M shares	19.14M shares
Diluted Shares Outstanding	18.51M shares	19.37M shares

Balance Sheet

Concept	2014 Q1	2013 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments	$290.1M	$333.6M
YoY Change	-13.04%	331.57%
Cash & Equivalents	$185.6M	$248.0M
Short-Term Investments	$221.6M	$250.7M
Other Short-Term Assets	$48.60M	$71.00M
YoY Change	-31.55%	-5.71%
Inventory	$203.1M	$199.3M
Prepaid Expenses	$4.700M	$3.900M
Receivables	$123.5M	$141.8M
Other Receivables	$11.70M	$11.80M
Total Short-Term Assets	$677.0M	$757.5M
YoY Change	-10.63%	57.09%
LONG-TERM ASSETS
Property, Plant & Equipment	$436.7M	$386.4M
YoY Change	13.02%	4.21%
Goodwill	$37.20M	$37.20M
YoY Change	0.0%	0.0%
Intangibles
YoY Change
Long-Term Investments	$6.600M	$5.800M
YoY Change	13.79%	13.73%
Other Assets	$108.5M	$88.80M
YoY Change	22.18%	40.95%
Total Long-Term Assets	$1.089B	$1.007B
YoY Change	8.15%	10.88%
TOTAL ASSETS
Total Short-Term Assets	$677.0M	$757.5M
Total Long-Term Assets	$1.089B	$1.007B
Total Assets	$1.766B	$1.764B
YoY Change	0.09%	26.91%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$72.30M	$73.20M
YoY Change	-1.23%	11.93%
Accrued Expenses	$60.70M	$58.30M
YoY Change	4.12%	31.01%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00
YoY Change
Long-Term Debt Due	$200.0K	$200.0K
YoY Change	0.0%	-88.24%
Total Short-Term Liabilities	$142.8M	$157.2M
YoY Change	-9.16%	-3.97%
LONG-TERM LIABILITIES
Long-Term Debt	$390.7M	$382.3M
YoY Change	2.2%	12643.33%
Other Long-Term Liabilities	$2.700M	$135.2M
YoY Change	-98.0%	16.45%
Total Long-Term Liabilities	$393.4M	$517.5M
YoY Change	-23.98%	334.51%
TOTAL LIABILITIES
Total Short-Term Liabilities	$142.8M	$157.2M
Total Long-Term Liabilities	$393.4M	$517.5M
Total Liabilities	$683.7M	$679.6M
YoY Change	0.6%	50.02%
SHAREHOLDERS EQUITY
Retained Earnings	$243.2M	$179.0M
YoY Change	35.87%	68.08%
Common Stock	$1.024B	$1.019B
YoY Change	0.46%	1.09%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$164.9M	$88.50M
YoY Change	86.33%	22.41%
Treasury Stock Shares	3.141M shares	1.984M shares
Shareholders Equity	$1.082B	$1.085B
YoY Change
Total Liabilities & Shareholders Equity	$1.766B	$1.764B
YoY Change	0.09%	26.91%

Cashflow Statement

Concept	2014 Q1	2013 Q1
OPERATING ACTIVITIES
Net Income	$15.80M	$33.50M
YoY Change	-52.84%	26.42%
Depreciation, Depletion And Amortization	$7.400M	$7.000M
YoY Change	5.71%	11.11%
Cash From Operating Activities	$27.10M	$6.300M
YoY Change	330.16%	-82.0%
INVESTING ACTIVITIES
Capital Expenditures	-$15.40M	-$9.300M
YoY Change	65.59%	3.33%
Acquisitions
YoY Change
Other Investing Activities	$25.00M	-$400.0K
YoY Change	-6350.0%	-105.56%
Cash From Investing Activities	$9.600M	-$9.700M
YoY Change	-198.97%	438.89%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$12.70M	$14.70M
YoY Change	-13.61%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-$20.60M	-$22.00M
YoY Change	-6.36%	285.96%
NET CHANGE
Cash From Operating Activities	$27.10M	$6.300M
Cash From Investing Activities	$9.600M	-$9.700M
Cash From Financing Activities	-$20.60M	-$22.00M
Net Change In Cash	$16.10M	-$25.40M
YoY Change	-163.39%	-192.36%
FREE CASH FLOW
Cash From Operating Activities	$27.10M	$6.300M
Capital Expenditures	-$15.40M	-$9.300M
Free Cash Flow	$42.50M	$15.60M
YoY Change	172.44%	-64.55%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2013Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	62900000	USD
CY2014Q1	us-gaap	Accounts Payable Current AccountsPayableCurrent	72300000	USD
CY2013Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	120600000	USD
CY2014Q1	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	124300000	USD
CY2014Q1	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	123500000	USD
CY2013Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	119800000	USD
CY2014Q1	us-gaap	Accrual For Environmental Loss Contingencies AccrualForEnvironmentalLossContingencies	22500000	USD
CY2013Q4	us-gaap	Accrued Environmental Loss Contingencies Current AccruedEnvironmentalLossContingenciesCurrent	2800000	USD
CY2014Q1	us-gaap	Accrued Environmental Loss Contingencies Current AccruedEnvironmentalLossContingenciesCurrent	3600000	USD
CY2014Q1	us-gaap	Accrued Environmental Loss Contingencies Noncurrent AccruedEnvironmentalLossContingenciesNoncurrent	18900000	USD
CY2013Q4	us-gaap	Accrued Environmental Loss Contingencies Noncurrent AccruedEnvironmentalLossContingenciesNoncurrent	20000000	USD
CY2013Q4	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	6600000	USD
CY2014Q1	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	3100000	USD
CY2013Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	137900000	USD
CY2014Q1	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	144900000	USD
CY2014Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-19800000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-20700000	USD
CY2014Q1	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1023600000	USD
CY2013Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1023100000	USD
CY2014Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2000000	USD
CY2014Q1	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	700000	USD
CY2014Q1	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	2000000	USD
CY2013Q1	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	2600000	USD
CY2013Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	800000	USD
CY2014Q1	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	800000	USD
CY2013Q1	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	2700000	USD
CY2014Q1	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	2900000	USD
CY2013Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	400000	USD
CY2014Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	400000	USD
CY2014Q1	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	4100000	USD
CY2013Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	4000000	USD
CY2014Q1	us-gaap	Assets Assets	1766000000	USD
CY2013Q4	us-gaap	Assets Assets	1770900000	USD
CY2013Q4	us-gaap	Assets Current AssetsCurrent	690800000	USD
CY2014Q1	us-gaap	Assets Current AssetsCurrent	677000000	USD
CY2014Q1	us-gaap	Available For Sale Securities Current AvailableForSaleSecuritiesCurrent	104500000	USD
CY2013Q4	us-gaap	Available For Sale Securities Current AvailableForSaleSecuritiesCurrent	129500000	USD
CY2014Q1	us-gaap	Available For Sale Securities Gross Realized Gain Loss Net AvailableForSaleSecuritiesGrossRealizedGainLossNet	200000	USD
CY2013Q1	us-gaap	Available For Sale Securities Gross Realized Gain Loss Net AvailableForSaleSecuritiesGrossRealizedGainLossNet	500000	USD
CY2014Q1	us-gaap	Bank Overdrafts BankOverdrafts	10500000	USD
CY2013Q4	us-gaap	Bank Overdrafts BankOverdrafts	9600000	USD
CY2014Q1	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	54200000	USD
CY2013Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	53000000	USD
CY2013Q1	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	2700000	USD
CY2014Q1	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	3400000	USD
CY2014Q1	us-gaap	Capital Lease Obligations Current CapitalLeaseObligationsCurrent	200000	USD
CY2013Q4	us-gaap	Capital Lease Obligations Current CapitalLeaseObligationsCurrent	200000	USD
CY2013Q1	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	100000	USD
CY2014Q1	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	0	USD
CY2013Q4	us-gaap	Capital Lease Obligations Noncurrent CapitalLeaseObligationsNoncurrent	100000	USD
CY2014Q1	us-gaap	Capital Lease Obligations Noncurrent CapitalLeaseObligationsNoncurrent	100000	USD
CY2014Q1	us-gaap	Cash Cash	68500000	USD
CY2013Q4	us-gaap	Cash Cash	57700000	USD
CY2014Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	185600000	USD
CY2013Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	169500000	USD
CY2013Q1	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	248000000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	273400000	USD
CY2014Q1	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	16100000	USD
CY2013Q1	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-25400000	USD
CY2014Q1	us-gaap	Commercial Paper At Carrying Value CommercialPaperAtCarryingValue	117100000	USD
CY2013Q4	us-gaap	Commercial Paper At Carrying Value CommercialPaperAtCarryingValue	111800000	USD
CY2013Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2014Q1	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2014Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.35
CY2013Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.30
CY2014Q1	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2013Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2014Q1	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	90000000	shares
CY2013Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	90000000	shares
CY2014Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	21171683	shares
CY2013Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	21103700	shares
CY2014Q1	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	18030600	shares
CY2013Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	18147017	shares
CY2014Q1	us-gaap	Common Stock Value CommonStockValue	200000	USD
CY2013Q4	us-gaap	Common Stock Value CommonStockValue	200000	USD
CY2013Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	34700000	USD
CY2014Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	16700000	USD
CY2013Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	66000000	USD
CY2014Q1	us-gaap	Construction In Progress Gross ConstructionInProgressGross	49300000	USD
CY2013Q4	us-gaap	Convertible Debt ConvertibleDebt	163500000	USD
CY2014Q1	us-gaap	Convertible Debt ConvertibleDebt	165700000	USD
CY2014Q1	us-gaap	Cost Of Goods Sold CostOfGoodsSold	282900000	USD
CY2013Q1	us-gaap	Cost Of Goods Sold CostOfGoodsSold	263600000	USD
CY2013Q1	us-gaap	Costs And Expenses CostsAndExpenses	287400000	USD
CY2014Q1	us-gaap	Costs And Expenses CostsAndExpenses	303000000	USD
CY2014Q1	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	200000	USD
CY2013Q1	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	400000	USD
CY2013Q4	us-gaap	Deferred Compensation Liability Classified Noncurrent DeferredCompensationLiabilityClassifiedNoncurrent	7000000	USD
CY2014Q1	us-gaap	Deferred Compensation Liability Classified Noncurrent DeferredCompensationLiabilityClassifiedNoncurrent	7200000	USD
CY2014Q1	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	6600000	USD
CY2013Q4	us-gaap	Deferred Compensation Plan Assets DeferredCompensationPlanAssets	6500000	USD
CY2013Q4	us-gaap	Deferred Finance Costs Noncurrent Net DeferredFinanceCostsNoncurrentNet	8900000	USD
CY2014Q1	us-gaap	Deferred Finance Costs Noncurrent Net DeferredFinanceCostsNoncurrentNet	8200000	USD
CY2014Q1	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	8700000	USD
CY2013Q1	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	15300000	USD
CY2014Q1	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	36700000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	36700000	USD
CY2013Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	69100000	USD
CY2014Q1	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	59200000	USD
CY2014Q1	us-gaap	Deferred Tax Liabilities Gross Noncurrent DeferredTaxLiabilitiesGrossNoncurrent	1200000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Gross Noncurrent DeferredTaxLiabilitiesGrossNoncurrent	1200000	USD
CY2013Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	152400000	USD
CY2014Q1	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	155400000	USD
CY2013Q1	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-5600000	USD
CY2014Q1	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-5600000	USD
CY2014Q1	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	4000000	USD
CY2013Q1	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	4000000	USD
CY2013Q1	us-gaap	Depreciation Depreciation	6600000	USD
CY2014Q1	us-gaap	Depreciation Depreciation	7000000	USD
CY2013Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	7000000	USD
CY2014Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	7400000	USD
CY2013Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	0	USD
CY2014Q1	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	0	USD
CY2013Q4	us-gaap	Derivative Assets DerivativeAssets	81800000	USD
CY2014Q1	us-gaap	Derivative Assets DerivativeAssets	88300000	USD
CY2013Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	2000000	USD
CY2014Q1	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	4100000	USD
CY2013Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	79800000	USD
CY2014Q1	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	84200000	USD
CY2013Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	0	USD
CY2014Q1	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	0	USD
CY2013Q4	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	0	USD
CY2014Q1	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	0	USD
CY2013Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	81800000	USD
CY2014Q1	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	88300000	USD
CY2013Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral	1200000	USD
CY2014Q1	us-gaap	Derivative Fair Value Of Derivative Asset Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral	1800000	USD
CY2013Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	80600000	USD
CY2014Q1	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	86500000	USD
CY2013Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	86100000	USD
CY2014Q1	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	89700000	USD
CY2013Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral	1200000	USD
CY2014Q1	us-gaap	Derivative Fair Value Of Derivative Liability Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral	1800000	USD
CY2013Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	84900000	USD
CY2014Q1	us-gaap	Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral	87900000	USD
CY2013Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	86100000	USD
CY2014Q1	us-gaap	Derivative Liabilities DerivativeLiabilities	89700000	USD
CY2013Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	1800000	USD
CY2014Q1	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	2000000	USD
CY2014Q1	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	87700000	USD
CY2013Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	84300000	USD
CY2013Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	0	USD
CY2014Q1	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	0	USD
CY2014Q1	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	1300000	USD
CY2013Q4	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	1600000	USD
CY2013Q1	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	800000	USD
CY2014Q1	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	700000	USD
CY2013Q1	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.197
CY2014Q1	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.374
CY2014Q1	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	33200000	USD
CY2013Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	42700000	USD
CY2014Q1	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	700000	USD
CY2013Q1	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	800000	USD
CY2014Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	6400000	USD
CY2014Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.88
CY2013Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.75
CY2013Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.73
CY2014Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.85
CY2014Q1	us-gaap	Effect Of Lifo Inventory Liquidation On Income EffectOfLIFOInventoryLiquidationOnIncome	-1800000	USD
CY2014Q1	us-gaap	Fair Value Assumptions Risk Free Interest Rate FairValueAssumptionsRiskFreeInterestRate	0.0013
CY2014Q1	us-gaap	Fair Value Assumptions Weighted Average Volatility Rate FairValueAssumptionsWeightedAverageVolatilityRate	0.170
CY2014Q1	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	9100000	USD
CY2013Q1	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	15400000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	33700000	USD
CY2014Q1	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	33300000	USD
CY2014Q1	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	300000	USD
CY2013Q4	us-gaap	Interest Payable Current InterestPayableCurrent	3700000	USD
CY2013Q1	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	-7200000	USD
CY2013Q1	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	500000	USD
CY2014Q1	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	0	USD
CY2013Q4	us-gaap	Goodwill Goodwill	37200000	USD
CY2014Q1	us-gaap	Goodwill Goodwill	37200000	USD
CY2013Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	41700000	USD
CY2014Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	25200000	USD
CY2014Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
CY2013Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
CY2014Q1	us-gaap	Income Tax Examination Liability Refund Adjustment From Settlement With Taxing Authority IncomeTaxExaminationLiabilityRefundAdjustmentFromSettlementWithTaxingAuthority	-7200000	USD
CY2013Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8200000	USD
CY2014Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	9400000	USD
CY2013Q3	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-2800000	USD
CY2013Q1	us-gaap	Income Tax Reconciliation Tax Settlements IncomeTaxReconciliationTaxSettlements	7600000	USD
CY2014Q1	us-gaap	Income Taxes Paid IncomeTaxesPaid	700000	USD
CY2013Q1	us-gaap	Income Taxes Paid IncomeTaxesPaid	700000	USD
CY2014Q1	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	2200000	USD
CY2013Q1	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	23600000	USD
CY2013Q1	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	9900000	USD
CY2014Q1	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	10400000	USD
CY2013Q1	us-gaap	Increase Decrease In Due To Affiliates Current IncreaseDecreaseInDueToAffiliatesCurrent	4400000	USD
CY2014Q1	us-gaap	Increase Decrease In Due To Affiliates Current IncreaseDecreaseInDueToAffiliatesCurrent	0	USD
CY2013Q1	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	13300000	USD
CY2014Q1	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-11300000	USD
CY2013Q1	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	500000	USD
CY2014Q1	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-1400000	USD
CY2013Q1	us-gaap	Increase Decrease In Other Noncurrent Assets And Liabilities Net IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet	1400000	USD
CY2014Q1	us-gaap	Increase Decrease In Other Noncurrent Assets And Liabilities Net IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet	400000	USD
CY2013Q1	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	2300000	USD
CY2014Q1	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	2300000	USD
CY2013Q1	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	92000	shares
CY2014Q1	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	471000	shares
CY2014Q1	us-gaap	Incremental Common Shares Attributable To Nonvested Shares With Forfeitable Dividends IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends	122000	shares
CY2013Q1	us-gaap	Incremental Common Shares Attributable To Nonvested Shares With Forfeitable Dividends IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends	131000	shares
CY2014Q1	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2013Q1	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2014Q1	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	1100000	USD
CY2013Q1	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	400000	USD
CY2013Q1	us-gaap	Interest Expense InterestExpense	9300000	USD
CY2014Q1	us-gaap	Interest Expense InterestExpense	8800000	USD
CY2014Q1	us-gaap	Interest Paid InterestPaid	400000	USD
CY2013Q1	us-gaap	Interest Paid InterestPaid	400000	USD
CY2014Q1	us-gaap	Interest Payable Current InterestPayableCurrent	10300000	USD
CY2013Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-22000000	USD
CY2013Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-9700000	USD
CY2013Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	388500000	USD
CY2014Q1	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	390700000	USD
CY2013Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	72500000	USD
CY2014Q1	us-gaap	Inventory Finished Goods InventoryFinishedGoods	65900000	USD
CY2013Q4	us-gaap	Inventory Net InventoryNet	214400000	USD
CY2014Q1	us-gaap	Inventory Net InventoryNet	203100000	USD
CY2014Q1	us-gaap	Inventory Raw Materials InventoryRawMaterials	51500000	USD
CY2013Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	47200000	USD
CY2014Q1	us-gaap	Inventory Work In Process InventoryWorkInProcess	66900000	USD
CY2013Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	75900000	USD
CY2014Q1	us-gaap	Investment Income Interest InvestmentIncomeInterest	300000	USD
CY2013Q1	us-gaap	Investment Income Interest InvestmentIncomeInterest	100000	USD
CY2014Q1	us-gaap	Investments In And Advances To Affiliates At Fair Value InvestmentsInAndAdvancesToAffiliatesAtFairValue	0	USD
CY2013Q4	us-gaap	Investments In And Advances To Affiliates At Fair Value InvestmentsInAndAdvancesToAffiliatesAtFairValue	0	USD
CY2013Q4	us-gaap	Land Land	22600000	USD
CY2014Q1	us-gaap	Land Land	22800000	USD
CY2013Q4	us-gaap	Liabilities Liabilities	686700000	USD
CY2014Q1	us-gaap	Liabilities Liabilities	683700000	USD
CY2014Q1	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1766000000	USD
CY2013Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1770900000	USD
CY2013Q4	us-gaap	Liabilities Current LiabilitiesCurrent	150600000	USD
CY2014Q1	us-gaap	Liabilities Current LiabilitiesCurrent	142800000	USD
CY2014Q1	us-gaap	Liabilities Other Than Longterm Debt Noncurrent LiabilitiesOtherThanLongtermDebtNoncurrent	149000000	USD
CY2013Q4	us-gaap	Liabilities Other Than Longterm Debt Noncurrent LiabilitiesOtherThanLongtermDebtNoncurrent	146400000	USD
CY2014Q1	us-gaap	Loss Contingency Range Of Possible Loss Portion Not Accrued LossContingencyRangeOfPossibleLossPortionNotAccrued	24900000	USD
CY2014Q1	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	455300000	USD
CY2013Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	425600000	USD
CY2013Q1	us-gaap	Multiemployer Plan Period Contributions MultiemployerPlanPeriodContributions	800000	USD
CY2014Q1	us-gaap	Multiemployer Plan Period Contributions MultiemployerPlanPeriodContributions	900000	USD
CY2014Q1	us-gaap	Nature Of Operations NatureOfOperations	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:12px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"></font><font style="font-family:inherit;font-size:10pt;font-style:italic;">Organization and Nature of Operations.</font><font style="font-family:inherit;font-size:10pt;"> Kaiser Aluminum Corporation (together with its subsidiaries, unless the context otherwise requires, the “Company”) specializes in the production of semi-fabricated specialty aluminum products, such as aluminum sheet and plate and extruded and drawn products, primarily used in aerospace/high strength, general engineering, automotive, and other industrial end market applications. The Company has one operating segment, Fabricated Products. See </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">Note 11</font><font style="font-family:inherit;font-size:10pt;"> for additional information regarding the Company’s reportable segment and its other business units.</font></div></div>
CY2014Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-20600000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	700000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	400000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-100000	USD
CY2014Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	0	USD
CY2014Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	0	USD
CY2014Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	9600000	USD
CY2014Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	27100000	USD
CY2013Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	6300000	USD
CY2014Q1	us-gaap	Net Income Loss NetIncomeLoss	15800000	USD
CY2013Q1	us-gaap	Net Income Loss NetIncomeLoss	33500000	USD
CY2014Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	32100000	USD
CY2013Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	50000000	USD
CY2014Q1	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	37100000	USD
CY2013Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	44800000	USD
CY2014Q1	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	200000	USD
CY2013Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	300000	USD
CY2014Q1	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	108500000	USD
CY2013Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	104800000	USD
CY2014Q1	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	2800000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	1100000	USD
CY2014Q1	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	1800000	USD
CY2014Q1	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	1000000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	-100000	USD
CY2014Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	0	USD
CY2013Q1	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax	0	USD
CY2014Q1	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	2700000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	1700000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	400000	USD
CY2014Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	200000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	400000	USD
CY2014Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	200000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0	USD
CY2014Q1	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0	USD
CY2014Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	100000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	200000	USD
CY2014Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	100000	USD
CY2014Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	900000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1200000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-1400000	USD
CY2014Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-2500000	USD
CY2014Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-1600000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-900000	USD
CY2014Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-900000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-500000	USD
CY2014Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	100000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax	400000	USD
CY2014Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	100000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	300000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	100000	USD
CY2014Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	0	USD
CY2014Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	300000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Before Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax	-300000	USD
CY2014Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	200000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax	-200000	USD
CY2014Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	100000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	-100000	USD
CY2014Q1	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	1800000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	500000	USD
CY2013Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	300000	USD
CY2014Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	0	USD
CY2013Q1	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	100000	USD
CY2013Q4	us-gaap	Other Inventory Supplies OtherInventorySupplies	18800000	USD
CY2014Q1	us-gaap	Other Inventory Supplies OtherInventorySupplies	18800000	USD
CY2013Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	2700000	USD
CY2014Q1	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	2700000	USD
CY2013Q1	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	2400000	USD
CY2014Q1	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-100000	USD
CY2014Q1	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	500000	USD
CY2013Q1	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	0	USD
CY2014Q1	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	1900000	USD
CY2013Q1	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	1000000	USD
CY2013Q1	us-gaap	Other Postretirement Benefits Payments OtherPostretirementBenefitsPayments	20000000	USD
CY2014Q1	us-gaap	Other Postretirement Benefits Payments OtherPostretirementBenefitsPayments	16000000	USD
CY2014Q1	us-gaap	Other Receivables OtherReceivables	11700000	USD
CY2013Q4	us-gaap	Other Receivables OtherReceivables	13400000	USD
CY2014Q1	us-gaap	Other Significant Noncash Transaction Value Of Consideration Given1 OtherSignificantNoncashTransactionValueOfConsiderationGiven1	0	USD
CY2013Q1	us-gaap	Other Significant Noncash Transaction Value Of Consideration Given1 OtherSignificantNoncashTransactionValueOfConsiderationGiven1	1500000	USD
CY2013Q1	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	14700000	USD
CY2014Q1	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	12700000	USD
CY2014Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	6400000	USD
CY2013Q1	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	5900000	USD
CY2014Q1	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	2200000	USD
CY2013Q1	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	2200000	USD
CY2014Q1	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	0	USD
CY2013Q1	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	85600000	USD
CY2014Q1	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	15400000	USD
CY2013Q1	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	9300000	USD
CY2014Q1	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2013Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2014Q1	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2013Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2013Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2014Q1	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2013Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2014Q1	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2014Q1	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	48600000	USD
CY2013Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	44200000	USD
CY2014Q1	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	4700000	USD
CY2013Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	5200000	USD
CY2014Q1	us-gaap	Prepaid Taxes PrepaidTaxes	2800000	USD
CY2013Q4	us-gaap	Prepaid Taxes PrepaidTaxes	0	USD
CY2014Q1	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	25000000	USD
CY2013Q1	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	85200000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	567200000	USD
CY2014Q1	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	581600000	USD
CY2014Q1	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	436700000	USD
CY2013Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	429300000	USD
CY2014Q1	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	300000	USD
CY2013Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	300000	USD
CY2013Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	9300000	USD
CY2014Q1	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	9300000	USD
CY2014Q1	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	243200000	USD
CY2013Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	233800000	USD
CY2013Q1	us-gaap	Revenues Revenues	337400000	USD
CY2014Q1	us-gaap	Revenues Revenues	335100000	USD
CY2014Q1	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	335100000	USD
CY2013Q1	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	337400000	USD
CY2014Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	2722222	shares
CY2014Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	761462	shares
CY2014Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	0	shares
CY2014Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2014Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	39.90
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	39.90
CY2013Q4	us-gaap	Self Insurance Reserve Noncurrent SelfInsuranceReserveNoncurrent	23300000	USD
CY2014Q1	us-gaap	Self Insurance Reserve Noncurrent SelfInsuranceReserveNoncurrent	23400000	USD
CY2013Q4	us-gaap	Senior Notes SeniorNotes	225000000	USD
CY2014Q1	us-gaap	Senior Notes SeniorNotes	225000000	USD
CY2013Q1	us-gaap	Share Based Compensation ShareBasedCompensation	2600000	USD
CY2014Q1	us-gaap	Share Based Compensation ShareBasedCompensation	2000000	USD
CY2014Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	80.01
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	80.01
CY2014Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	20791	shares
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	20791	shares
CY2014Q1	us-gaap	Share Price SharePrice	71.42
CY2014Q1	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P3Y
CY2013	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P3Y3M
CY2014Q1	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	30869	shares
CY2013Q1	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	35838	shares
CY2014Q1	us-gaap	Significant Change In Unrecognized Tax Benefits Is Reasonably Possible Amount Of Unrecorded Benefit SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit	-1500000	USD
CY2014Q1	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	0	shares
CY2013	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount	117600000	USD
CY2014Q1	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount	104900000	USD
CY2014Q1	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	2200000	USD
CY2014Q1	us-gaap	Stockholders Equity StockholdersEquity	1082300000	USD
CY2013Q4	us-gaap	Stockholders Equity StockholdersEquity	1084200000	USD
CY2013Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	4300000	USD
CY2014Q1	us-gaap	Taxes Payable Current TaxesPayableCurrent	7600000	USD
CY2013Q1	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	62.62
CY2014Q1	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	69.07
CY2013Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	2956683	shares
CY2014Q1	us-gaap	Treasury Stock Shares TreasuryStockShares	3141083	shares
CY2014Q1	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	184400	shares
CY2013Q1	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	259596	shares
CY2014Q1	us-gaap	Treasury Stock Value TreasuryStockValue	164900000	USD
CY2013Q4	us-gaap	Treasury Stock Value TreasuryStockValue	152200000	USD
CY2014Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	12700000	USD
CY2013Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	16200000	USD
CY2013Q1	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-300000	USD
CY2014Q1	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	2900000	USD
CY2014Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	3700000	USD
CY2013Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	3800000	USD
CY2013Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	2700000	USD
CY2014Q1	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	2600000	USD
CY2014Q1	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:12px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"></font><font style="font-family:inherit;font-size:10pt;font-style:italic;">Use of Estimates in the Preparation of Financial Statements.</font><font style="font-family:inherit;font-size:10pt;"> The preparation of financial statements in accordance with GAAP requires the use of estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities known to exist as of the date the financial statements are published, and the reported amounts of revenues and expenses during the reporting period. Uncertainties with respect to such estimates and assumptions are inherent in the preparation of the Company’s consolidated financial statements; accordingly, it is possible that the actual results could differ from these estimates and assumptions, which could have a material effect on the reported amounts of the Company’s consolidated financial position and results of operations.</font></div></div>
CY2013Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	19366000	shares
CY2014Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	18514000	shares
CY2014Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	17921000	shares
CY2013Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	19143000	shares
CY2014Q1	kalu	Accrued Annual Veba Contribution AccruedAnnualVebaContribution	0	USD
CY2013Q4	kalu	Accrued Annual Veba Contribution AccruedAnnualVebaContribution	16000000	USD
CY2014Q1	kalu	Call Option Fair Value Assumptions Credit Spread CallOptionFairValueAssumptionsCreditSpread	154	basispoints
CY2014Q1	kalu	Constant Maturity Treasury Rate Specified Year One ConstantMaturityTreasuryRateSpecifiedYearOne	P1Y
CY2013Q1	kalu	Defined Benefit Plan Net Periodic Benefit Cost And Charges Relating To Other Benefit Plans DefinedBenefitPlanNetPeriodicBenefitCostAndChargesRelatingToOtherBenefitPlans	-400000	USD
CY2014Q1	kalu	Defined Benefit Plan Net Periodic Benefit Cost And Charges Relating To Other Benefit Plans DefinedBenefitPlanNetPeriodicBenefitCostAndChargesRelatingToOtherBenefitPlans	-500000	USD
CY2014Q1	kalu	Eva Measurement Period EvaMeasurementPeriod	P1Y
CY2014Q1	kalu	Expected Period Related To Remediation Expenditures For Environmental Contingencies ExpectedPeriodRelatedToRemediationExpendituresForEnvironmentalContingencies	P30Y
CY2014Q1	kalu	Expected Period Which Unrecognized Tax Benefits Will Be Reduced ExpectedPeriodWhichUnrecognizedTaxBenefitsWillBeReduced	12 months
CY2013Q1	kalu	Fabricated Products Shipments Containing Fixed Price Terms FabricatedProductsShipmentsContainingFixedPriceTerms	29.8	mmlbs
CY2014Q1	kalu	Fabricated Products Shipments Containing Fixed Price Terms FabricatedProductsShipmentsContainingFixedPriceTerms	34.4	mmlbs
CY2014Q1	kalu	Intercompany Loan IntercompanyLoan	0	USD
CY2013Q1	kalu	Intercompany Loan IntercompanyLoan	0	USD
CY2014Q1	kalu	Intercompany Payable Current IntercompanyPayableCurrent	0	USD
CY2013Q4	kalu	Intercompany Payable Current IntercompanyPayableCurrent	0	USD
CY2014Q1	kalu	Intercompany Payable Noncurrent IntercompanyPayableNoncurrent	0	USD
CY2013Q4	kalu	Intercompany Payable Noncurrent IntercompanyPayableNoncurrent	0	USD
CY2014Q1	kalu	Intercompany Receivables Current IntercompanyReceivablesCurrent	0	USD
CY2013Q4	kalu	Intercompany Receivables Current IntercompanyReceivablesCurrent	0	USD
CY2014Q1	kalu	Intercompany Receivables Noncurrent IntercompanyReceivablesNoncurrent	0	USD
CY2013Q4	kalu	Intercompany Receivables Noncurrent IntercompanyReceivablesNoncurrent	0	USD
CY2014Q1	kalu	Net Asset In Respect Of Vebas NetAssetInRespectOfVebas	414100000	USD
CY2013Q4	kalu	Net Asset In Respect Of Vebas NetAssetInRespectOfVebas	406000000	USD
CY2014Q1	kalu	Other Comprehensive Income Cumulative Tax Rate Adjustments Before Tax OtherComprehensiveIncomeCumulativeTaxRateAdjustmentsBeforeTax	0	USD
CY2014Q1	kalu	Other Comprehensive Income Cumulative Tax Rate Adjustments Netof Tax OtherComprehensiveIncomeCumulativeTaxRateAdjustmentsNetofTax	-900000	USD
CY2014Q1	kalu	Other Comprehensive Income Cumulative Tax Rate Adjustments Tax OtherComprehensiveIncomeCumulativeTaxRateAdjustmentsTax	900000	USD
CY2014Q1	kalu	Other Comprehensive Income Loss Reclassification Adjustment Tax OtherComprehensiveIncomeLossReclassificationAdjustmentTax	-900000	USD
CY2013Q1	kalu	Other Comprehensive Income Loss Reclassification Adjustment Tax OtherComprehensiveIncomeLossReclassificationAdjustmentTax	-400000	USD
CY2014Q1	kalu	Ownership Interest In Subsidiaries OwnershipInterestInSubsidiaries	1.00
CY2014Q1	kalu	Selling Administrative Research And Development And General Expenses SellingAdministrativeResearchAndDevelopmentAndGeneralExpenses	20300000	USD
CY2013Q1	kalu	Selling Administrative Research And Development And General Expenses SellingAdministrativeResearchAndDevelopmentAndGeneralExpenses	21700000	USD
CY2014Q1	kalu	Short Term Incentive Compensation Expense ShortTermIncentiveCompensationExpense	2400000	USD
CY2013Q1	kalu	Short Term Incentive Compensation Expense ShortTermIncentiveCompensationExpense	4100000	USD
CY2014Q1	kalu	Total Selling Administrative Research And Development And General Expenses TotalSellingAdministrativeResearchAndDevelopmentAndGeneralExpenses	14700000	USD
CY2013Q1	kalu	Total Selling Administrative Research And Development And General Expenses TotalSellingAdministrativeResearchAndDevelopmentAndGeneralExpenses	16100000	USD
CY2014Q1	kalu	Unrealized Gain Loss On Financial Derivatives UnrealizedGainLossOnFinancialDerivatives	900000	USD
CY2013Q1	kalu	Unrealized Gain Loss On Financial Derivatives UnrealizedGainLossOnFinancialDerivatives	400000	USD
CY2014Q1	kalu	Unrealized Gains Losses On Operational Hedging Activities UnrealizedGainsLossesOnOperationalHedgingActivities	2000000	USD
CY2013Q1	kalu	Unrealized Gains Losses On Operational Hedging Activities UnrealizedGainsLossesOnOperationalHedgingActivities	-700000	USD
CY2014Q1	kalu	Unrecognized Tax Benefits And Income Tax Penalties And Interest Accrued Noncurrent UnrecognizedTaxBenefitsAndIncomeTaxPenaltiesAndInterestAccruedNoncurrent	4900000	USD
CY2013Q4	kalu	Unrecognized Tax Benefits And Income Tax Penalties And Interest Accrued Noncurrent UnrecognizedTaxBenefitsAndIncomeTaxPenaltiesAndInterestAccruedNoncurrent	5000000	USD
CY2014Q1	dei	Amendment Flag AmendmentFlag	false
CY2014Q1	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2014Q1	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q1
CY2014Q1	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2014
CY2014Q1	dei	Document Period End Date DocumentPeriodEndDate	2014-03-31
CY2014Q1	dei	Document Type DocumentType	10-Q
CY2014Q1	dei	Entity Central Index Key EntityCentralIndexKey	0000811596
CY2014Q2	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	18030319	shares
CY2014Q1	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2014Q1	dei	Entity Registrant Name EntityRegistrantName	Kaiser Aluminum Corp

Files In Submission

Name	View Source	Status
0000811596-14-000021-index-headers.html	Edgar Link	pending
0000811596-14-000021-index.html	Edgar Link	pending
0000811596-14-000021.txt	Edgar Link	pending
0000811596-14-000021-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xls	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
kalu-20140331.xml	Edgar Link	completed
kalu-20140331.xsd	Edgar Link	pending
kalu-20140331_cal.xml	Edgar Link	unprocessable
kalu-20140331_def.xml	Edgar Link	unprocessable
kalu-20140331_lab.xml	Edgar Link	unprocessable
kalu-20140331_pre.xml	Edgar Link	unprocessable
kalu331201410-q.htm	Edgar Link	pending
kaluexhibit1010-3312014x10.htm	Edgar Link	pending
kaluexhibit1011-3312014x10.htm	Edgar Link	pending
kaluexhibit106-3312014x10xq.htm	Edgar Link	pending
kaluexhibit107-3312014x10xq.htm	Edgar Link	pending
kaluexhibit108-3312014x10xq.htm	Edgar Link	pending
kaluexhibit109-3312014x10xq.htm	Edgar Link	pending
kaluexhibit311-3312014x10xq.htm	Edgar Link	pending
kaluexhibit312-3312014x10xq.htm	Edgar Link	pending
kaluexhibit321-3312014x10xq.htm	Edgar Link	pending
kaluexhibit322-3312014x10xq.htm	Edgar Link	pending
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R7.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$KALU
KAISER ALUMINUM CORP Stock $kalu

2014 Q1 Form 10-Q Financial Statement

#000081159614000021 Filed on April 25, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$KALU KAISER ALUMINUM CORP Stock $kalu

2014 Q1 Form 10-Q Financial Statement

#000081159614000021 Filed on April 25, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$KALU
KAISER ALUMINUM CORP Stock $kalu