$KALU
KAISER ALUMINUM CORP Stock $kalu

$kalu Overview Financials Valuation SEC Filings Company Website

2012 Q4 Form 10-Q Financial Statement

#000081159612000077 Filed on October 25, 2012

Income Statement

Concept	2012 Q4	2012 Q3	2011 Q3
Revenue	$314.0M	$335.5M	$322.3M
YoY Change	-1.13%	4.1%	22.36%
Cost Of Revenue	$264.8M	$268.9M	$280.9M
YoY Change	-2.79%	-4.27%	22.5%
Gross Profit	$49.10M	$78.90M	$24.90M
YoY Change	31.64%	216.87%	-27.83%
Gross Profit Margin	15.64%	23.52%	7.73%
Selling, General & Admin	$13.90M	$16.00M	$13.70M
YoY Change	-9.74%	16.79%	-16.97%
% of Gross Profit	28.31%	20.28%	55.02%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$6.900M	$6.700M	$6.200M
YoY Change	9.52%	8.06%	29.17%
% of Gross Profit	14.05%	8.49%	24.9%
Operating Expenses	$25.20M	$22.70M	$20.00M
YoY Change	16.13%	13.5%	-6.1%
Operating Profit	$23.90M	$56.20M	$4.900M
YoY Change	53.21%	1046.94%	-60.16%
Interest Expense	$6.800M	$9.200M	$4.300M
YoY Change	-121.86%	113.95%	16.22%
% of Operating Profit	28.45%	16.37%	87.76%
Other Income/Expense, Net		$400.0K	$3.900M
YoY Change		-89.74%	-208.33%
Pretax Income	$15.20M	$47.40M	$4.500M
YoY Change	17.83%	953.33%	-23.73%
Income Tax	$6.100M	$18.20M	$400.0K
% Of Pretax Income	40.13%	38.4%	8.89%
Net Earnings	$9.100M	$29.20M	$4.100M
YoY Change	49.18%	612.2%	-18.0%
Net Earnings / Revenue	2.9%	8.7%	1.27%
Basic Earnings Per Share	$0.48	$1.52	$0.21
Diluted Earnings Per Share	$0.47	$1.51	$0.21
COMMON SHARES
Basic Shares Outstanding	19.31M shares	19.15M shares	19.00M shares
Diluted Shares Outstanding		19.29M shares	19.20M shares

Balance Sheet

Concept	2012 Q4	2012 Q3	2011 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$358.4M	$335.5M	$23.60M
YoY Change	619.68%	1321.61%	-83.58%
Cash & Equivalents	$273.4M	$255.6M	$23.60M
Short-Term Investments	$85.00M	$79.90M
Other Short-Term Assets	$70.10M	$73.10M	$1.900M
YoY Change	-11.15%	3747.37%	-63.46%
Inventory	$186.0M	$189.0M	$194.6M
Prepaid Expenses	$4.100M	$4.600M	$4.100M
Receivables	$123.8M	$156.4M	$129.1M
Other Receivables	$3.400M	$1.700M	$1.900M
Total Short-Term Assets	$741.7M	$755.7M	$408.1M
YoY Change	70.7%	85.18%	-10.47%
LONG-TERM ASSETS
Property, Plant & Equipment	$384.3M	$374.7M	$363.8M
YoY Change	4.49%	3.0%	1.93%
Goodwill	$37.20M	$37.20M	$37.20M
YoY Change	0.0%	0.0%	1100.0%
Intangibles
YoY Change
Long-Term Investments	$5.600M	$5.700M	$4.600M
YoY Change	14.29%	23.91%	2.22%
Other Assets	$86.00M	$84.20M	$64.80M
YoY Change	18.95%	29.94%	-14.74%
Total Long-Term Assets	$1.011B	$938.6M	$973.2M
YoY Change	14.07%	-3.56%	11.87%
TOTAL ASSETS
Total Short-Term Assets	$741.7M	$755.7M	$408.1M
Total Long-Term Assets	$1.011B	$938.6M	$973.2M
Total Assets	$1.753B	$1.694B	$1.381B
YoY Change	32.7%	22.66%	4.19%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$62.50M	$66.00M	$62.30M
YoY Change	0.48%	5.94%	27.93%
Accrued Expenses	$78.20M	$59.70M	$43.50M
YoY Change	90.73%	37.24%	-9.75%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$100.0K	$0.00	$1.300M
YoY Change	-92.31%	-100.0%	0.0%
Total Short-Term Liabilities	$161.6M	$157.4M	$153.5M
YoY Change	7.88%	2.54%	10.67%
LONG-TERM LIABILITIES
Long-Term Debt	$380.3M	$378.4M	$3.700M
YoY Change	151.19%	10127.03%	-69.42%
Other Long-Term Liabilities	$134.5M	$128.3M	$115.7M
YoY Change	6.75%	10.89%	-8.25%
Total Long-Term Liabilities	$514.8M	$506.7M	$119.4M
YoY Change	85.58%	324.37%	-13.6%
TOTAL LIABILITIES
Total Short-Term Liabilities	$161.6M	$157.4M	$153.5M
Total Long-Term Liabilities	$514.8M	$506.7M	$119.4M
Total Liabilities	$681.7M	$684.0M	$419.2M
YoY Change	52.23%	63.17%	0.29%
SHAREHOLDERS EQUITY
Retained Earnings	$151.2M	$146.9M	$86.20M
YoY Change	79.15%	70.42%	1.29%
Common Stock	$1.018B	$1.017B	$999.3M
YoY Change	1.93%	1.79%	1.27%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$72.30M	$72.30M	$72.30M
YoY Change	0.0%	0.0%	0.0%
Treasury Stock Shares	1.725M shares	1.725M shares	1.725M shares
Shareholders Equity	$1.071B	$1.010B	$962.1M
YoY Change
Total Liabilities & Shareholders Equity	$1.753B	$1.694B	$1.381B
YoY Change	32.7%	22.66%	4.19%

Cashflow Statement

Concept	2012 Q4	2012 Q3	2011 Q3
OPERATING ACTIVITIES
Net Income	$9.100M	$29.20M	$4.100M
YoY Change	49.18%	612.2%	-18.0%
Depreciation, Depletion And Amortization	$6.900M	$6.700M	$6.200M
YoY Change	9.52%	8.06%	29.17%
Cash From Operating Activities	$45.70M	$32.00M	-$12.10M
YoY Change	8.81%	-364.46%	-145.32%
INVESTING ACTIVITIES
Capital Expenditures	-$18.40M	-$8.800M	-$8.800M
YoY Change	91.67%	0.0%	-48.84%
Acquisitions
YoY Change
Other Investing Activities	-$4.600M	-$80.10M	-$1.000M
YoY Change	-757.14%	7910.0%	-120.83%
Cash From Investing Activities	-$23.00M	-$88.90M	-$9.800M
YoY Change	158.43%	807.14%	-20.97%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-4.900M	-5.300M	-14.30M
YoY Change	-28.99%	-62.94%	186.0%
NET CHANGE
Cash From Operating Activities	45.70M	32.00M	-12.10M
Cash From Investing Activities	-23.00M	-88.90M	-9.800M
Cash From Financing Activities	-4.900M	-5.300M	-14.30M
Net Change In Cash	17.80M	-62.20M	-36.20M
YoY Change	-32.06%	71.82%	-489.25%
FREE CASH FLOW
Cash From Operating Activities	$45.70M	$32.00M	-$12.10M
Capital Expenditures	-$18.40M	-$8.800M	-$8.800M
Free Cash Flow	$64.10M	$40.80M	-$3.300M
YoY Change	24.22%	-1336.36%	-107.52%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2012Q3	us-gaap	Accounts Payable Current AccountsPayableCurrent	66000000	USD
CY2011Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	62200000	USD
CY2012Q3	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	157100000	USD
CY2011Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	99800000	USD
CY2011Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	98900000	USD
CY2012Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	156400000	USD
CY2012Q3	us-gaap	Accrual For Environmental Loss Contingencies AccrualForEnvironmentalLossContingencies	21900000	USD
CY2012Q3	us-gaap	Accrual For Environmental Loss Contingencies Undiscounted Due After Fifth Year AccrualForEnvironmentalLossContingenciesUndiscountedDueAfterFifthYear	14400000	USD
CY2012Q3	us-gaap	Accrual For Environmental Loss Contingencies Undiscounted Due In Fifth Year AccrualForEnvironmentalLossContingenciesUndiscountedDueInFifthYear	600000	USD
CY2012Q3	us-gaap	Accrual For Environmental Loss Contingencies Undiscounted Due In Fourth Year AccrualForEnvironmentalLossContingenciesUndiscountedDueInFourthYear	900000	USD
CY2012Q3	us-gaap	Accrual For Environmental Loss Contingencies Undiscounted Due In Remainder Of Fiscal Year AccrualForEnvironmentalLossContingenciesUndiscountedDueInRemainderOfFiscalYear	200000	USD
CY2012Q3	us-gaap	Accrual For Environmental Loss Contingencies Undiscounted Due In Second Year AccrualForEnvironmentalLossContingenciesUndiscountedDueInSecondYear	3000000	USD
CY2012Q3	us-gaap	Accrual For Environmental Loss Contingencies Undiscounted Due In Third Year AccrualForEnvironmentalLossContingenciesUndiscountedDueInThirdYear	2800000	USD
CY2011Q4	us-gaap	Accrued Environmental Loss Contingencies Current AccruedEnvironmentalLossContingenciesCurrent	1200000	USD
CY2012Q3	us-gaap	Accrued Environmental Loss Contingencies Current AccruedEnvironmentalLossContingenciesCurrent	2300000	USD
CY2011Q4	us-gaap	Accrued Environmental Loss Contingencies Noncurrent AccruedEnvironmentalLossContingenciesNoncurrent	20800000	USD
CY2012Q3	us-gaap	Accrued Environmental Loss Contingencies Noncurrent AccruedEnvironmentalLossContingenciesNoncurrent	19600000	USD
CY2011Q4	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	4100000	USD
CY2012Q3	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	4800000	USD
CY2011Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	86900000	USD
CY2012Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	105200000	USD
CY2011Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-85000000	USD
CY2012Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-81500000	USD
CY2011Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	998400000	USD
CY2012Q3	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1017000000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	5200000	USD
	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	1300000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	3800000	USD
CY2012Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1600000	USD
CY2011Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1200000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	5200000	USD
CY2011Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	900000	USD
CY2012Q3	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	700000	USD
	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	7200000	USD
	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	5600000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1300000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1600000	USD
CY2011Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	500000	USD
CY2012Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	400000	USD
CY2012Q3	us-gaap	Asset Retirement Obligation AssetRetirementObligation	4600000	USD
CY2011Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	4000000	USD
CY2011Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	3800000	USD
CY2012Q3	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	3900000	USD
CY2012Q3	us-gaap	Assets Assets	1694300000	USD
CY2011Q4	us-gaap	Assets Assets	1320600000	USD
CY2012Q3	us-gaap	Assets Current AssetsCurrent	755700000	USD
CY2011Q4	us-gaap	Assets Current AssetsCurrent	434500000	USD
CY2011Q4	us-gaap	Available For Sale Securities Current AvailableForSaleSecuritiesCurrent	0	USD
CY2012Q3	us-gaap	Available For Sale Securities Current AvailableForSaleSecuritiesCurrent	79900000	USD
CY2011Q4	us-gaap	Available For Sale Securities Noncurrent AvailableForSaleSecuritiesNoncurrent	4900000	USD
CY2012Q3	us-gaap	Available For Sale Securities Noncurrent AvailableForSaleSecuritiesNoncurrent	5700000	USD
CY2012Q3	us-gaap	Bank Overdrafts BankOverdrafts	4000000	USD
CY2011Q4	us-gaap	Bank Overdrafts BankOverdrafts	0	USD
CY2012Q3	us-gaap	Billed Contract Receivables BilledContractReceivables	150500000	USD
CY2011Q4	us-gaap	Billed Contract Receivables BilledContractReceivables	98900000	USD
CY2011Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	45900000	USD
CY2012Q3	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	50500000	USD
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	300000	USD
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	1200000	USD
CY2012Q3	us-gaap	Cash Cash	135400000	USD
CY2011Q4	us-gaap	Cash Cash	49800000	USD
	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	4900000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	49800000	USD
CY2012Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	255600000	USD
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	135600000	USD
CY2011Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	23600000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-112000000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	205800000	USD
CY2012Q3	us-gaap	Commercial Paper At Carrying Value CommercialPaperAtCarryingValue	120200000	USD
CY2011Q4	us-gaap	Commercial Paper At Carrying Value CommercialPaperAtCarryingValue	0	USD
CY2011Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2012Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2012Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.25
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.75
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.72
CY2012Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.25
CY2011Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2012Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2012Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	90000000	shares
CY2011Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	90000000	shares
CY2012Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	19314195	shares
CY2011Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	19253185	shares
CY2012Q3	us-gaap	Common Stock Value CommonStockValue	200000	USD
CY2011Q4	us-gaap	Common Stock Value CommonStockValue	200000	USD
CY2011Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	5200000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	80200000	USD
CY2012Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	30100000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	21300000	USD
	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:8px;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;">Concentration of Credit Risk.</font><font style="font-family:inherit;font-size:10pt;"> Financial arrangements which potentially subject the Company to concentrations of credit risk consist of metal, currency, electricity and natural gas derivative contracts, certain cash-settled call options that the Company purchased in March 2010 (the “Call Options”) (see </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">Note 3</font><font style="font-family:inherit;font-size:10pt;">), short term investments, and arrangements related to the Company’s cash equivalents. If the market value of the Company’s net commodity and currency derivative positions with certain counterparties exceeds the applicable threshold, if any, the counterparty is required to transfer cash collateral in excess of the threshold to the Company. Conversely, if the market value of these net derivative positions falls below a specified threshold, the Company is required to transfer cash collateral below the threshold to certain counterparties. At both </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">September 30, 2012</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">December 31, 2011</font><font style="font-family:inherit;font-size:10pt;">, the Company had </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">no</font><font style="font-family:inherit;font-size:10pt;"> margin deposits with or from its counterparties.</font></div><div style="line-height:120%;padding-top:8px;text-align:left;text-indent:20px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The Company is exposed to credit loss in the event of nonperformance by counterparties on derivative contracts used in hedging activities as well as failure of counterparties to return cash collateral previously transferred to the counterparties. The counterparties to the Company’s derivative contracts are major financial institutions, and the Company does not expect nonperformance by any of its counterparties.</font></div><div style="line-height:120%;padding-top:8px;text-align:left;text-indent:20px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The Company places its cash in bank deposits, commercial paper, and money market funds. Such money market funds are with high credit quality financial institutions which invest primarily in commercial paper and time deposits of prime quality, short-term repurchase agreements, U.S. government notes and government agency notes.</font></div></div>
CY2012Q3	us-gaap	Construction In Progress Gross ConstructionInProgressGross	9800000	USD
CY2011Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	24100000	USD
CY2011Q3	us-gaap	Cost Of Goods Sold CostOfGoodsSold	297700000	USD
	us-gaap	Cost Of Goods Sold CostOfGoodsSold	878600000	USD
	us-gaap	Cost Of Goods Sold CostOfGoodsSold	836100000	USD
CY2012Q3	us-gaap	Cost Of Goods Sold CostOfGoodsSold	256600000	USD
CY2012Q3	us-gaap	Costs And Expenses CostsAndExpenses	279300000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	944300000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	904100000	USD
CY2011Q3	us-gaap	Costs And Expenses CostsAndExpenses	317400000	USD
CY2012Q3	us-gaap	Debt Instrument Convertible Conversion Price1 DebtInstrumentConvertibleConversionPrice1	48.29
CY2012Q4	us-gaap	Debt Instrument Convertible Conversion Price1 DebtInstrumentConvertibleConversionPrice1	48.28
CY2011Q3	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	-300000	USD
	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	-100000	USD
	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	800000	USD
CY2012Q3	us-gaap	Deferred Compensation Arrangement With Individual Compensation Expense DeferredCompensationArrangementWithIndividualCompensationExpense	300000	USD
CY2012Q3	us-gaap	Deferred Compensation Liability Classified Noncurrent DeferredCompensationLiabilityClassifiedNoncurrent	5900000	USD
CY2011Q4	us-gaap	Deferred Compensation Liability Classified Noncurrent DeferredCompensationLiabilityClassifiedNoncurrent	5100000	USD
CY2011Q4	us-gaap	Deferred Finance Costs Noncurrent Net DeferredFinanceCostsNoncurrentNet	7800000	USD
CY2012Q3	us-gaap	Deferred Finance Costs Noncurrent Net DeferredFinanceCostsNoncurrentNet	12500000	USD
	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	44800000	USD
	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	10000000	USD
CY2011Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	13500000	USD
CY2012Q3	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	9200000	USD
CY2012Q3	us-gaap	Deferred Revenue Noncurrent DeferredRevenueNoncurrent	800000	USD
CY2011Q4	us-gaap	Deferred Revenue Noncurrent DeferredRevenueNoncurrent	3300000	USD
CY2012Q3	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	63000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	63000000	USD
CY2012Q3	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	139700000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	226900000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	29800000	USD
	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-8900000	USD
	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-4500000	USD
	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	5900000	USD
CY2012Q3	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	1300000	USD
	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	6300000	USD
CY2011Q3	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	1200000	USD
	us-gaap	Depreciation Depreciation	17300000	USD
	us-gaap	Depreciation Depreciation	18300000	USD
CY2011Q3	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	6200000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	18900000	USD
CY2012Q3	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	6700000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	19600000	USD
CY2011Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	0	USD
CY2012Q3	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	2600000	USD
CY2012Q3	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	52900000	USD
CY2011Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	46200000	USD
	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-19800000	USD
	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	16400000	USD
	us-gaap	Derivative Instruments Gain Loss Recognized In Income Net DerivativeInstrumentsGainLossRecognizedInIncomeNet	8400000	USD
CY2012Q3	us-gaap	Derivative Instruments Gain Loss Recognized In Income Net DerivativeInstrumentsGainLossRecognizedInIncomeNet	-5700000	USD
	us-gaap	Derivative Instruments Gain Loss Recognized In Income Net DerivativeInstrumentsGainLossRecognizedInIncomeNet	-16200000	USD
CY2011Q3	us-gaap	Derivative Instruments Gain Loss Recognized In Income Net DerivativeInstrumentsGainLossRecognizedInIncomeNet	500000	USD
CY2011Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	14800000	USD
CY2012Q3	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	4000000	USD
CY2011Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	55500000	USD
CY2012Q3	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	59200000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	14700000	USD
CY2012Q3	us-gaap	Due To Related Parties Current DueToRelatedPartiesCurrent	14000000	USD
CY2011Q4	us-gaap	Due To Related Parties Current DueToRelatedPartiesCurrent	14400000	USD
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.00
CY2011Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.21
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.01
CY2012Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.52
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.99
CY2012Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.51
CY2011Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.21
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.98
CY2012Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	28900000	USD
CY2012Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear	500000	USD
CY2012Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	1600000	USD
CY2012Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	1700000	USD
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.332
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.384
	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.029
	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.005
	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.008
CY2012Q3	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	35500000	USD
CY2011Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	30900000	USD
CY2012Q3	us-gaap	Equity Method Investment Ownership Percentage EquityMethodInvestmentOwnershipPercentage	0.49
	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	1300000	USD
	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	0	USD
	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	0	USD
	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	1300000	USD
	us-gaap	Fair Value Assumptions Expected Dividend Payments FairValueAssumptionsExpectedDividendPayments	0.24
	us-gaap	Fair Value Assumptions Risk Free Interest Rate FairValueAssumptionsRiskFreeInterestRate	0.0027
	us-gaap	Fair Value Assumptions Weighted Average Volatility Rate FairValueAssumptionsWeightedAverageVolatilityRate	0.25
CY2011	us-gaap	Finite Lived Intangible Asset Useful Life FiniteLivedIntangibleAssetUsefulLife	P24Y
	us-gaap	Finite Lived Intangible Asset Useful Life FiniteLivedIntangibleAssetUsefulLife	P24Y
CY2011Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	2500000	USD
CY2012Q3	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	3800000	USD
CY2012Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	1600000	USD
CY2012Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	1600000	USD
CY2011Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	39700000	USD
CY2012Q3	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	39700000	USD
CY2012Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	35900000	USD
CY2011Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	37200000	USD
CY2011Q3	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	-1200000	USD
CY2012Q3	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	500000	USD
	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	-100000	USD
	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	1900000	USD
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-100000	USD
	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	0	USD
CY2012Q3	us-gaap	Goodwill Goodwill	37200000	USD
CY2011Q4	us-gaap	Goodwill Goodwill	37200000	USD
CY2012Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	47400000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	124400000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	28400000	USD
CY2011Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	4500000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
CY2011Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
CY2012Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
CY2012Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	18200000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	9400000	USD
CY2011Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	400000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	47700000	USD
	us-gaap	Income Tax Expense Benefit Continuing Operations IncomeTaxExpenseBenefitContinuingOperations	47700000	USD
	us-gaap	Income Tax Expense Benefit Continuing Operations IncomeTaxExpenseBenefitContinuingOperations	9400000	USD
CY2012Q3	us-gaap	Income Tax Expense Benefit Continuing Operations IncomeTaxExpenseBenefitContinuingOperations	18200000	USD
CY2011Q3	us-gaap	Income Tax Expense Benefit Continuing Operations IncomeTaxExpenseBenefitContinuingOperations	400000	USD
	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	200000	USD
	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-200000	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	900000	USD
CY2012Q3	us-gaap	Income Taxes Paid IncomeTaxesPaid	400000	USD
CY2011Q3	us-gaap	Income Taxes Paid IncomeTaxesPaid	400000	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	1400000	USD
CY2012Q3	us-gaap	Income Taxes Receivable Noncurrent IncomeTaxesReceivableNoncurrent	2900000	USD
CY2011Q4	us-gaap	Income Taxes Receivable Noncurrent IncomeTaxesReceivableNoncurrent	2800000	USD
	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	39200000	USD
	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	58000000	USD
	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	12500000	USD
	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	4400000	USD
CY2012Q3	us-gaap	Increase Decrease In Asset Retirement Obligations IncreaseDecreaseInAssetRetirementObligations	400000	USD
	us-gaap	Increase Decrease In Due To Affiliates Current IncreaseDecreaseInDueToAffiliatesCurrent	3300000	USD
	us-gaap	Increase Decrease In Due To Affiliates Current IncreaseDecreaseInDueToAffiliatesCurrent	-400000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	33300000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-30200000	USD
	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	15700000	USD
	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	300000	USD
	us-gaap	Increase Decrease In Other Noncurrent Assets And Liabilities Net IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet	1900000	USD
	us-gaap	Increase Decrease In Other Noncurrent Assets And Liabilities Net IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet	5700000	USD
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-1700000	USD
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	2000000	USD
	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	1100000	USD
	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	-6800000	USD
	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	0	shares
	us-gaap	Incremental Common Shares Attributable To Call Options And Warrants IncrementalCommonSharesAttributableToCallOptionsAndWarrants	0	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
	us-gaap	Interest Costs Incurred Capitalized InterestCostsIncurredCapitalized	1400000	USD
CY2011Q3	us-gaap	Interest Costs Incurred Capitalized InterestCostsIncurredCapitalized	400000	USD
	us-gaap	Interest Costs Incurred Capitalized InterestCostsIncurredCapitalized	800000	USD
CY2012Q3	us-gaap	Interest Costs Incurred Capitalized InterestCostsIncurredCapitalized	300000	USD
CY2011Q3	us-gaap	Interest Expense InterestExpense	4300000	USD
	us-gaap	Interest Expense InterestExpense	13200000	USD
	us-gaap	Interest Expense InterestExpense	19800000	USD
CY2012Q3	us-gaap	Interest Expense InterestExpense	9200000	USD
	us-gaap	Interest Paid InterestPaid	5400000	USD
	us-gaap	Interest Paid InterestPaid	5600000	USD
CY2012Q3	us-gaap	Interest Payable Current InterestPayableCurrent	10700000	USD
CY2011Q4	us-gaap	Interest Payable Current InterestPayableCurrent	2300000	USD
CY2012Q3	us-gaap	Inventory Finished Goods InventoryFinishedGoods	60400000	USD
CY2011Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	75900000	USD
CY2011Q4	us-gaap	Inventory Lifo Reserve InventoryLIFOReserve	29400000	USD
CY2012Q3	us-gaap	Inventory Lifo Reserve InventoryLIFOReserve	15800000	USD
	us-gaap	Inventory Lifo Reserve Period Charge InventoryLIFOReservePeriodCharge	-13500000	USD
	us-gaap	Inventory Lifo Reserve Period Charge InventoryLIFOReservePeriodCharge	12800000	USD
CY2012Q3	us-gaap	Inventory Lifo Reserve Period Charge InventoryLIFOReservePeriodCharge	-5700000	USD
CY2011Q3	us-gaap	Inventory Lifo Reserve Period Charge InventoryLIFOReservePeriodCharge	-7100000	USD
CY2011Q4	us-gaap	Inventory Net InventoryNet	205700000	USD
CY2012Q3	us-gaap	Inventory Net InventoryNet	189000000	USD
CY2012Q3	us-gaap	Inventory Raw Materials InventoryRawMaterials	46300000	USD
CY2011Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	58100000	USD
CY2011Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	57500000	USD
CY2012Q3	us-gaap	Inventory Work In Process InventoryWorkInProcess	66000000	USD
CY2012Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	100000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	300000	USD
CY2011Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	0	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	200000	USD
CY2012Q3	us-gaap	Investments In And Advances To Affiliates At Fair Value InvestmentsInAndAdvancesToAffiliatesAtFairValue	0	USD
CY2011Q4	us-gaap	Investments In And Advances To Affiliates At Fair Value InvestmentsInAndAdvancesToAffiliatesAtFairValue	0	USD
CY2011Q4	us-gaap	Land Land	22600000	USD
CY2012Q3	us-gaap	Land Land	22600000	USD
CY2011Q4	us-gaap	Liabilities Liabilities	447800000	USD
CY2012Q3	us-gaap	Liabilities Liabilities	684000000	USD
CY2012Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1694300000	USD
CY2011Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1320600000	USD
CY2012Q3	us-gaap	Liabilities Current LiabilitiesCurrent	157400000	USD
CY2011Q4	us-gaap	Liabilities Current LiabilitiesCurrent	149800000	USD
CY2012Q3	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	264800000	USD
CY2012Q3	us-gaap	Line Of Credit Facility Interest Rate At Period End LineOfCreditFacilityInterestRateAtPeriodEnd	0.040
CY2012Q3	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	258100000	USD
CY2011Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	151400000	USD
CY2012Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	378400000	USD
CY2011Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	356700000	USD
CY2012Q3	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	391600000	USD
CY2012Q3	us-gaap	Margin Deposit Assets MarginDepositAssets	0	USD
CY2011Q4	us-gaap	Margin Deposit Assets MarginDepositAssets	0	USD
	us-gaap	Multiemployer Plan Period Contributions MultiemployerPlanPeriodContributions	2600000	USD
CY2011Q3	us-gaap	Multiemployer Plan Period Contributions MultiemployerPlanPeriodContributions	800000	USD
	us-gaap	Multiemployer Plan Period Contributions MultiemployerPlanPeriodContributions	2300000	USD
CY2012Q3	us-gaap	Multiemployer Plan Period Contributions MultiemployerPlanPeriodContributions	900000	USD
	us-gaap	Nature Of Operations NatureOfOperations	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:8px;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, with its operations consisting of one reportable segment in the aluminum industry, referred to herein as Fabricated Products. The Company also owns a non-controlling interest in a secondary aluminum facility. See </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">Note 13</font><font style="font-family:inherit;font-size:10pt;"> for additional information regarding the Company’s reportable segment and its other business units, referred to herein as All Other.</font></div></div>
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-25400000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	198000000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-107400000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-98900000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	20800000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	106700000	USD
	us-gaap	Net Income Loss NetIncomeLoss	19000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	76700000	USD
CY2011Q3	us-gaap	Net Income Loss NetIncomeLoss	4100000	USD
CY2012Q3	us-gaap	Net Income Loss NetIncomeLoss	29200000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	142000000	USD
CY2012Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	56200000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	39400000	USD
CY2011Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	4900000	USD
CY2011Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	875100000	USD
CY2012Q3	us-gaap	Operating Loss Carryforwards Valuation Allowance OperatingLossCarryforwardsValuationAllowance	18800000	USD
CY2011Q4	us-gaap	Operating Loss Carryforwards Valuation Allowance OperatingLossCarryforwardsValuationAllowance	18800000	USD
CY2012Q3	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	41900000	USD
CY2011Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	41000000	USD
CY2011Q4	us-gaap	Other Assets OtherAssets	100000	USD
CY2012Q3	us-gaap	Other Assets OtherAssets	100000	USD
CY2011Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	72300000	USD
CY2012Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	84200000	USD
	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Recognized In Net Periodic Pension Cost Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostRecognizedInNetPeriodicPensionCostTax	-1200000	USD
	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Recognized In Net Periodic Pension Cost Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostRecognizedInNetPeriodicPensionCostTax	-1200000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Recognized In Net Periodic Pension Cost Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostRecognizedInNetPeriodicPensionCostTax	-400000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Recognized In Net Periodic Pension Cost Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostRecognizedInNetPeriodicPensionCostTax	-400000	USD
	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicBenefitCostBeforeTax	-3100000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicBenefitCostBeforeTax	-1000000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicBenefitCostBeforeTax	-1000000	USD
	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicBenefitCostBeforeTax	-3100000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicPensionCostNetOfTax	-600000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicPensionCostNetOfTax	-600000	USD
	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicPensionCostNetOfTax	-1900000	USD
	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicPensionCostNetOfTax	-1900000	USD
	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	3700000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	1600000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	1600000	USD
	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	5600000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	-400000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	800000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	-500000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	500000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-400000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-500000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	500000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	800000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0	USD
CY2011Q3	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0	USD
CY2012Q3	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	3500000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1100000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	900000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	2300000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-1800000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-3500000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-5400000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-1100000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-2100000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-600000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-3300000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-1100000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-500000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-2100000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-700000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-1400000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Pension And Other Postretirement Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Tax OtherComprehensiveIncomeLossReclassificationPensionAndOtherPostretirementBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostTax	900000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Loss Reclassification Pension And Other Postretirement Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Tax OtherComprehensiveIncomeLossReclassificationPensionAndOtherPostretirementBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostTax	300000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Pension And Other Postretirement Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Tax OtherComprehensiveIncomeLossReclassificationPensionAndOtherPostretirementBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostTax	200000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Loss Reclassification Pension And Other Postretirement Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Tax OtherComprehensiveIncomeLossReclassificationPensionAndOtherPostretirementBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostTax	100000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	500000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	700000	USD
	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostBeforeTax	400000	USD
	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	2100000	USD
	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	1400000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostBeforeTax	100000	USD
	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostBeforeTax	2300000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostBeforeTax	800000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax	0	USD
CY2012Q3	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax	500000	USD
	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax	1400000	USD
	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax	200000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-300000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	-300000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	300000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	600000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-300000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-300000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	300000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	600000	USD
CY2012Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	0	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	0	USD
CY2011Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	0	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	0	USD
CY2011Q4	us-gaap	Other Inventory Supplies OtherInventorySupplies	14200000	USD
CY2012Q3	us-gaap	Other Inventory Supplies OtherInventorySupplies	16300000	USD
CY2012Q3	us-gaap	Other Liabilities OtherLiabilities	3500000	USD
CY2011Q4	us-gaap	Other Liabilities OtherLiabilities	3200000	USD
CY2011Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	126000000	USD
CY2012Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	128300000	USD
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-100000	USD
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-1100000	USD
	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	800000	USD
	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	-200000	USD
CY2012Q3	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	400000	USD
CY2011Q3	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	-200000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	2200000	USD
CY2011Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	3900000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	2200000	USD
CY2012Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	400000	USD
	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-100000	USD
	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	200000	USD
CY2012Q3	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	0	USD
CY2011Q3	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-100000	USD
CY2012Q3	us-gaap	Other Receivables OtherReceivables	1700000	USD
CY2011Q4	us-gaap	Other Receivables OtherReceivables	1200000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	14100000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	14700000	USD
	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	2100000	USD
	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	6600000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	2200000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1100000	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	200000	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	80000000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	83200000	USD
	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	25700000	USD
	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	22900000	USD
CY2012Q3	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	8800000	USD
CY2011Q3	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	8800000	USD
CY2011Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2012Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2011Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2012Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2011Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2012Q3	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2012Q3	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2011Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2012Q3	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	73100000	USD
CY2011Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	78900000	USD
CY2011Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	3900000	USD
CY2012Q3	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	4600000	USD
CY2011Q4	us-gaap	Prepaid Taxes PrepaidTaxes	3800000	USD
CY2012Q3	us-gaap	Prepaid Taxes PrepaidTaxes	1400000	USD
CY2011Q3	us-gaap	Prior Period Reclassification Adjustment PriorPeriodReclassificationAdjustment	-15500000	USD
	us-gaap	Prior Period Reclassification Adjustment PriorPeriodReclassificationAdjustment	-21100000	USD
	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	225000000	USD
	us-gaap	Proceeds From Issuance Of Senior Long Term Debt ProceedsFromIssuanceOfSeniorLongTermDebt	0	USD
CY2012Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	474500000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	449300000	USD
	us-gaap	Property Plant And Equipment Impairment PropertyPlantAndEquipmentImpairment	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:8px;text-align:left;text-indent:20px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Property, plant and equipment is reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of the asset or group of assets may not be recoverable. The Company regularly assesses whether events and circumstances with the potential to trigger impairment have occurred and relies on a number of factors, including operating results, business plans, economic projections, and anticipated future cash flow, to make such assessments. The Company uses an estimate of the future undiscounted cash flows of the related asset or asset group over the estimated remaining life of such asset(s) in measuring whether the asset(s) are recoverable. Measurement of the amount of impairment, if any, is based on the difference between the carrying value of the asset(s) and the estimated fair value of such asset(s). Fair value is determined through a series of standard valuation techniques. See “</font><font style="font-family:inherit;font-size:10pt;font-style:italic;">Fair Values of Non-financial Assets and Liabilities”</font><font style="font-family:inherit;font-size:10pt;"> in </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 fair value assessments relating to certain property, plant and equipment.</font></div><div style="line-height:120%;padding-top:8px;text-align:left;text-indent:20px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Property, plant and equipment held for future development are presented as idled assets. Such assets are evaluated for impairment on a held-and-used basis. Depreciation expense is not adjusted when assets are temporarily idled.</font></div></div>
CY2011Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	367800000	USD
CY2012Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	374700000	USD
	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	100000	USD
	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	100000	USD
	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	8000000	USD
	us-gaap	Repayments Of Notes Payable RepaymentsOfNotesPayable	4700000	USD
CY2011Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	7800000	USD
CY2012Q3	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	1300000	USD
CY2011Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	10400000	USD
CY2012Q3	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	10100000	USD
CY2012Q3	us-gaap	Restructuring Charges RestructuringCharges	0	USD
	us-gaap	Restructuring Charges RestructuringCharges	0	USD
	us-gaap	Restructuring Charges RestructuringCharges	-300000	USD
CY2011Q3	us-gaap	Restructuring Charges RestructuringCharges	-300000	USD
CY2012Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	146900000	USD
CY2011Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	84400000	USD
CY2012Q3	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	335500000	USD
	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	1046100000	USD
	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	983700000	USD
CY2011Q3	us-gaap	Sales Revenue Goods Net SalesRevenueGoodsNet	322300000	USD
CY2012Q3	us-gaap	Secured Debt Current SecuredDebtCurrent	0	USD
CY2011Q4	us-gaap	Secured Debt Current SecuredDebtCurrent	1300000	USD
CY2011Q4	us-gaap	Self Insurance Reserve Noncurrent SelfInsuranceReserveNoncurrent	20800000	USD
CY2012Q3	us-gaap	Self Insurance Reserve Noncurrent SelfInsuranceReserveNoncurrent	20800000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	4000000	USD
	us-gaap	Tax Adjustments Settlements And Unusual Provisions TaxAdjustmentsSettlementsAndUnusualProvisions	9200000	USD
CY2012Q3	us-gaap	Taxes Payable Current TaxesPayableCurrent	4500000	USD
CY2011Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	2600000	USD
CY2011Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	1724606	shares
CY2011Q4	us-gaap	Treasury Stock Value TreasuryStockValue	72300000	USD
CY2012Q3	us-gaap	Treasury Stock Value TreasuryStockValue	72300000	USD
CY2012Q3	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	6600000	USD
CY2011Q4	us-gaap	Unbilled Contracts Receivable UnbilledContractsReceivable	900000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	5400000	USD
CY2012Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	2722222	shares
CY2012Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	934521	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	0	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	39.90
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	39.90
CY2012Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	80.01
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	80.01
CY2012Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	20791	shares
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber	20791	shares
CY2012Q3	us-gaap	Share Price SharePrice	58.39
CY2011	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P5Y3M
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P4Y6M
	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	23445	shares
	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	45801	shares
	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	0	shares
	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	200000	USD
CY2011	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	200000	USD
	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	2200000	USD
CY2011Q4	us-gaap	Stockholders Equity StockholdersEquity	872800000	USD
CY2012Q3	us-gaap	Stockholders Equity StockholdersEquity	1010300000	USD
CY2012Q3	us-gaap	Treasury Stock Shares TreasuryStockShares	1724606	shares
	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-19800000	USD
	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	16400000	USD
CY2012Q3	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	12200000	USD
CY2011Q3	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-12700000	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	13700000	USD
CY2012Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	14300000	USD
CY2012Q3	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	7400000	USD
	kalu	Effective Income Tax Rate Reconciliation Change In Unrecognized Tax Benefits Including Interest And Penalty EffectiveIncomeTaxRateReconciliationChangeInUnrecognizedTaxBenefitsIncludingInterestAndPenalty	-0.016
CY2011Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	6600000	USD
	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:8px;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 US 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>
	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-800000	USD
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	19240000	shares
CY2011Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	19197000	shares
CY2012Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	19288000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	19171000	shares
CY2011Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	18999000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	19104000	shares
CY2012Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	19154000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	18971000	shares
	us-gaap	Workers Compensation Discount Percent WorkersCompensationDiscountPercent	0.0075
CY2011	us-gaap	Workers Compensation Discount Percent WorkersCompensationDiscountPercent	0.0100
CY2012Q3	kalu	Accrued Freight AccruedFreight	2300000	USD
CY2011Q4	kalu	Accrued Freight AccruedFreight	2400000	USD
CY2011Q4	kalu	Active Property Plant And Equipment Net ActivePropertyPlantAndEquipmentNet	362400000	USD
CY2012Q3	kalu	Active Property Plant And Equipment Net ActivePropertyPlantAndEquipmentNet	369300000	USD
	kalu	Amortization Of Option Premiums AmortizationOfOptionPremiums	300000	USD
	kalu	Amortization Of Option Premiums AmortizationOfOptionPremiums	-900000	USD
CY2012Q3	kalu	Call Option Fair Value Assumptions Credit Spread CallOptionFairValueAssumptionsCreditSpread	266	basispoints
CY2012Q3	kalu	Common Stock Owned By Union Veba CommonStockOwnedByUnionVeba	0	USD
CY2011Q4	kalu	Common Stock Owned By Union Veba CommonStockOwnedByUnionVeba	52900000	USD
	kalu	Defined Benefit Plan Net Periodic Benefit Cost And Charges Relating To Other Benefit Plans DefinedBenefitPlanNetPeriodicBenefitCostAndChargesRelatingToOtherBenefitPlans	800000	USD
CY2011Q3	kalu	Defined Benefit Plan Net Periodic Benefit Cost And Charges Relating To Other Benefit Plans DefinedBenefitPlanNetPeriodicBenefitCostAndChargesRelatingToOtherBenefitPlans	200000	USD
	kalu	Defined Benefit Plan Net Periodic Benefit Cost And Charges Relating To Other Benefit Plans DefinedBenefitPlanNetPeriodicBenefitCostAndChargesRelatingToOtherBenefitPlans	3600000	USD
CY2012Q3	kalu	Defined Benefit Plan Net Periodic Benefit Cost And Charges Relating To Other Benefit Plans DefinedBenefitPlanNetPeriodicBenefitCostAndChargesRelatingToOtherBenefitPlans	-400000	USD
	kalu	Domestic Tax DomesticTax	45800000	USD
	kalu	Domestic Tax DomesticTax	9500000	USD
CY2011Q3	kalu	Domestic Tax DomesticTax	1600000	USD
CY2012Q3	kalu	Domestic Tax DomesticTax	17700000	USD
	kalu	Effective Income Tax Rate Reconciliation Change In Unrecognized Tax Benefits Including Interest And Penalty EffectiveIncomeTaxRateReconciliationChangeInUnrecognizedTaxBenefitsIncludingInterestAndPenalty	0.006
	kalu	Eva Measurement Period EvaMeasurementPeriod	P1Y
CY2011Q4	kalu	Excess Tax Benefit From Employee Restricted Stock Resulting In Net Operating Loss Carry Forwards ExcessTaxBenefitFromEmployeeRestrictedStockResultingInNetOperatingLossCarryForwards	1700000	USD
CY2012Q3	kalu	Expected Period Related To Excess Environmental Costs Over Current Accruals ExpectedPeriodRelatedToExcessEnvironmentalCostsOverCurrentAccruals	P30Y
CY2012Q3	kalu	Expected Period Related To Remediation Expenditures For Environmental Contingencies ExpectedPeriodRelatedToRemediationExpendituresForEnvironmentalContingencies	P30Y
CY2012Q3	kalu	Expected Period Which Unrecognized Tax Benefits Will Be Reduced ExpectedPeriodWhichUnrecognizedTaxBenefitsWillBeReduced	P12M
	kalu	Fabricated Products Shipments Containing Fixed Price Terms FabricatedProductsShipmentsContainingFixedPriceTerms	139.0	mmlbs
	kalu	Fabricated Products Shipments Containing Fixed Price Terms FabricatedProductsShipmentsContainingFixedPriceTerms	112.1	mmlbs
	kalu	Fixed Charge Coverage Ratio FixedChargeCoverageRatio	1.1:1.0
CY2012Q3	kalu	Idled Equipment IdledEquipment	5400000	USD
CY2011Q4	kalu	Idled Equipment IdledEquipment	5400000	USD
	kalu	Increase Decrease In Equity Relating To Sale Of Common Shares Owned By Union Veba IncreaseDecreaseInEquityRelatingToSaleOfCommonSharesOwnedByUnionVeba	67000000	USD
	kalu	Increase Decrease In Unrecognized Tax Benefit Interest And Penalty Expense IncreaseDecreaseInUnrecognizedTaxBenefitInterestAndPenaltyExpense	-400000	USD
	kalu	Increase Decrease In Unrecognized Tax Benefit Interest And Penalty Expense IncreaseDecreaseInUnrecognizedTaxBenefitInterestAndPenaltyExpense	700000	USD
CY2012Q3	kalu	Intercompany Payable Current IntercompanyPayableCurrent	0	USD
CY2011Q4	kalu	Intercompany Payable Current IntercompanyPayableCurrent	0	USD
CY2012Q3	kalu	Intercompany Payable Noncurrent IntercompanyPayableNoncurrent	0	USD
CY2011Q4	kalu	Intercompany Payable Noncurrent IntercompanyPayableNoncurrent	0	USD
CY2012Q3	kalu	Intercompany Receivables Current IntercompanyReceivablesCurrent	0	USD
CY2011Q4	kalu	Intercompany Receivables Current IntercompanyReceivablesCurrent	0	USD
CY2012Q3	kalu	Intercompany Receivables Noncurrent IntercompanyReceivablesNoncurrent	0	USD
CY2011Q4	kalu	Intercompany Receivables Noncurrent IntercompanyReceivablesNoncurrent	0	USD
CY2012Q3	kalu	Margin Deposits From Counterparties MarginDepositsFromCounterparties	0	USD
CY2011Q4	kalu	Margin Deposits From Counterparties MarginDepositsFromCounterparties	0	USD
CY2011Q4	kalu	Net Asset In Respect Of Vebas NetAssetInRespectOfVebas	144700000	USD
CY2012Q3	kalu	Net Asset In Respect Of Vebas NetAssetInRespectOfVebas	266900000	USD
CY2012Q3	kalu	Net Liability In Respect Of Veba NetLiabilityInRespectOfVeba	19900000	USD
CY2011Q4	kalu	Net Liability In Respect Of Veba NetLiabilityInRespectOfVeba	20600000	USD
CY2011Q4	kalu	Option Premiums Paid Current OptionPremiumsPaidCurrent	400000	USD
CY2012Q3	kalu	Option Premiums Paid Current OptionPremiumsPaidCurrent	200000	USD
CY2012Q3	kalu	Option Premiums Paid Non Current OptionPremiumsPaidNonCurrent	0	USD
CY2011Q4	kalu	Option Premiums Paid Non Current OptionPremiumsPaidNonCurrent	100000	USD
CY2011Q4	kalu	Option Premiums Received OptionPremiumsReceived	100000	USD
CY2012Q3	kalu	Option Premiums Received OptionPremiumsReceived	100000	USD
CY2012Q3	kalu	Option Premiums Received Noncurrent OptionPremiumsReceivedNoncurrent	0	USD
CY2011Q4	kalu	Option Premiums Received Noncurrent OptionPremiumsReceivedNoncurrent	100000	USD
	kalu	Other Operating Income Loss OtherOperatingIncomeLoss	-200000	USD
CY2011Q3	kalu	Other Operating Income Loss OtherOperatingIncomeLoss	100000	USD
CY2012Q3	kalu	Other Operating Income Loss OtherOperatingIncomeLoss	0	USD
	kalu	Other Operating Income Loss OtherOperatingIncomeLoss	100000	USD
	kalu	Payments For Repurchase Of Common Stock To Cover Employees Tax Withholdings Upon Vesting Of Non Vested Shares PaymentsForRepurchaseOfCommonStockToCoverEmployeesTaxWithholdingsUponVestingOfNonVestedShares	1100000	USD
	kalu	Payments For Repurchase Of Common Stock To Cover Employees Tax Withholdings Upon Vesting Of Non Vested Shares PaymentsForRepurchaseOfCommonStockToCoverEmployeesTaxWithholdingsUponVestingOfNonVestedShares	2200000	USD
CY2012Q3	kalu	Potential Additional Environmental Costs PotentialAdditionalEnvironmentalCosts	18700000	USD
CY2011Q4	kalu	Prior Period Reclassification Adjustment Balance Sheet PriorPeriodReclassificationAdjustmentBalanceSheet	600000	USD
	kalu	Reclassification Relating To Dividends On Unvested Equity Awards ReclassificationRelatingToDividendsOnUnvestedEquityAwards	500000	USD
CY2012Q3	kalu	Reorganization Value Per Share ReorganizationValuePerShare	24.02
CY2011Q3	kalu	Reorganization Value Per Share ReorganizationValuePerShare	24.02
CY2011Q4	kalu	Restricted Common Stock Owned By Union Veba Shares RestrictedCommonStockOwnedByUnionVebaShares	2202495	shares
CY2012Q3	kalu	Restricted Common Stock Owned By Union Veba Shares RestrictedCommonStockOwnedByUnionVebaShares	0	shares
	kalu	Selling Administrative Research And Development And General Expenses SellingAdministrativeResearchAndDevelopmentAndGeneralExpenses	47300000	USD
CY2012Q3	kalu	Selling Administrative Research And Development And General Expenses SellingAdministrativeResearchAndDevelopmentAndGeneralExpenses	16000000	USD
CY2011Q3	kalu	Selling Administrative Research And Development And General Expenses SellingAdministrativeResearchAndDevelopmentAndGeneralExpenses	13700000	USD
	kalu	Selling Administrative Research And Development And General Expenses SellingAdministrativeResearchAndDevelopmentAndGeneralExpenses	48300000	USD
	kalu	Short Term Incentive Compensation Expense ShortTermIncentiveCompensationExpense	11000000	USD
	kalu	Short Term Incentive Compensation Expense ShortTermIncentiveCompensationExpense	6400000	USD
CY2011Q3	kalu	Short Term Incentive Compensation Expense ShortTermIncentiveCompensationExpense	1900000	USD
CY2012Q3	kalu	Short Term Incentive Compensation Expense ShortTermIncentiveCompensationExpense	3900000	USD
CY2012Q3	kalu	Time Period Within Which Companys Recorded Estimate Of Its Obligation May Change TimePeriodWithinWhichCompanysRecordedEstimateOfItsObligationMayChange	P12M
CY2012Q3	kalu	Unrecognized Tax Benefits And Income Tax Penalties And Interest Accrued Noncurrent UnrecognizedTaxBenefitsAndIncomeTaxPenaltiesAndInterestAccruedNoncurrent	14600000	USD
CY2011Q4	kalu	Unrecognized Tax Benefits And Income Tax Penalties And Interest Accrued Noncurrent UnrecognizedTaxBenefitsAndIncomeTaxPenaltiesAndInterestAccruedNoncurrent	13400000	USD
CY2012Q3	kalu	Weighted Average Credit Adjusted Risk Free Rate WeightedAverageCreditAdjustedRiskFreeRate	0.091
CY2011Q4	kalu	Weighted Average Credit Adjusted Risk Free Rate WeightedAverageCreditAdjustedRiskFreeRate	0.091
CY2012Q3	kalu	Workerscompensationliabilityundiscounted Workerscompensationliabilityundiscounted	24200000	USD
CY2011Q4	kalu	Workerscompensationliabilityundiscounted Workerscompensationliabilityundiscounted	24300000	USD
	dei	Amendment Flag AmendmentFlag	false
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2012
	dei	Document Period End Date DocumentPeriodEndDate	2012-09-30
	dei	Document Type DocumentType	10-Q
	dei	Entity Central Index Key EntityCentralIndexKey	0000811596
CY2012Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	19313235	shares
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Registrant Name EntityRegistrantName	Kaiser Aluminum Corp

Files In Submission

Name	View Source	Status
0000811596-12-000077-index-headers.html	Edgar Link	pending
0000811596-12-000077-index.html	Edgar Link	pending
0000811596-12-000077.txt	Edgar Link	pending
0000811596-12-000077-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xls	Edgar Link	pending
kalu-20120930.xml	Edgar Link	completed
kalu-20120930.xsd	Edgar Link	pending
kalu-20120930_cal.xml	Edgar Link	unprocessable
kalu-20120930_def.xml	Edgar Link	unprocessable
kalu-20120930_lab.xml	Edgar Link	unprocessable
kalu-20120930_pre.xml	Edgar Link	unprocessable
kalu930201210q.htm	Edgar Link	pending
kaluexhibit311-9302012x10xq.htm	Edgar Link	pending
kaluexhibit312-9302012x10xq.htm	Edgar Link	pending
kaluexhibit321-9302012x10xq.htm	Edgar Link	pending
kaluexhibit322-9302012x10xq.htm	Edgar Link	pending
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$KALU
KAISER ALUMINUM CORP Stock $kalu

2012 Q4 Form 10-Q Financial Statement

#000081159612000077 Filed on October 25, 2012

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$KALU KAISER ALUMINUM CORP Stock $kalu

2012 Q4 Form 10-Q Financial Statement

#000081159612000077 Filed on October 25, 2012

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$KALU
KAISER ALUMINUM CORP Stock $kalu