$KALU
KAISER ALUMINUM CORP Stock $kalu

$kalu Overview Financials Valuation SEC Filings Company Website

2019 Q4 Form 10-Q Financial Statement

#000081159619000056 Filed on October 25, 2019

Income Statement

Concept	2019 Q4	2019 Q3	2018 Q3
Revenue	$368.7M	$374.9M	$393.1M
YoY Change	-5.32%	-4.63%	18.12%
Cost Of Revenue	$298.0M	$298.6M	$323.3M
YoY Change	-6.08%	-7.64%	26.09%
Gross Profit	$70.70M	$76.30M	$69.80M
YoY Change	-1.94%	9.31%	-8.64%
Gross Profit Margin	19.18%	20.35%	17.76%
Selling, General & Admin	$22.30M	$23.30M	$23.90M
YoY Change	-0.45%	-2.51%	-3.24%
% of Gross Profit	31.54%	30.54%	34.24%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$12.80M	$12.30M	$11.00M
YoY Change	11.3%	11.82%	7.84%
% of Gross Profit	18.1%	16.12%	15.76%
Operating Expenses	$35.90M	$35.60M	$34.90M
YoY Change	1.99%	2.01%	-3.32%
Operating Profit	$9.600M	$40.70M	$34.90M
YoY Change	-73.98%	16.62%	-15.9%
Interest Expense	-$5.700M	$5.800M	$5.700M
YoY Change	42.5%	1.75%	7.55%
% of Operating Profit	-59.38%	14.25%	16.33%
Other Income/Expense, Net	-$1.600M	-$800.0K	$700.0K
YoY Change	-44.83%	-214.29%	-450.0%
Pretax Income	-$18.00M	$34.10M	$29.90M
YoY Change	-160.0%	14.05%	-16.94%
Income Tax	-$7.400M	$8.700M	$8.200M
% Of Pretax Income		25.51%	27.42%
Net Earnings	-$10.60M	$25.40M	$21.70M
YoY Change	-144.92%	17.05%	9.05%
Net Earnings / Revenue	-2.87%	6.78%	5.52%
Basic Earnings Per Share	-$0.66	$1.59	$1.31
Diluted Earnings Per Share	-$0.66	$1.57	$1.29
COMMON SHARES
Basic Shares Outstanding	15.88M shares	15.96M	16.57M shares
Diluted Shares Outstanding		16.13M	16.78M shares

Balance Sheet

Concept	2019 Q4	2019 Q3	2018 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$343.0M	$197.4M	$182.7M
YoY Change	111.34%	8.05%	-31.13%
Cash & Equivalents	$264.3M	$172.1M	$94.30M
Short-Term Investments	$78.70M	$168.1M	$159.5M
Other Short-Term Assets	$19.40M	$18.40M	$24.20M
YoY Change	2.65%	-23.97%	-23.17%
Inventory	$177.6M	$192.5M	$196.2M
Prepaid Expenses
Receivables	$167.1M	$188.1M	$194.5M
Other Receivables	$18.10M	$26.10M	$24.40M
Total Short-Term Assets	$779.8M	$668.6M	$673.0M
YoY Change	18.76%	-0.65%	1.57%
LONG-TERM ASSETS
Property, Plant & Equipment	$622.0M	$614.3M	$595.4M
YoY Change	1.67%	3.17%	6.74%
Goodwill	$18.80M	$44.00M	$43.40M
YoY Change	-57.27%	1.38%	130.85%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$38.40M	$36.50M	$39.00M
YoY Change	-0.52%	-6.41%	-1.27%
Total Long-Term Assets	$746.4M	$757.7M	$753.0M
YoY Change	-2.14%	0.62%	-0.93%
TOTAL ASSETS
Total Short-Term Assets	$779.8M	$668.6M	$673.0M
Total Long-Term Assets	$746.4M	$757.7M	$753.0M
Total Assets	$1.526B	$1.426B	$1.426B
YoY Change	7.53%	0.02%	0.23%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$92.00M	$93.80M	$120.4M
YoY Change	-24.22%	-22.09%	27.54%
Accrued Expenses	$71.00M	$72.80M	$63.90M
YoY Change	-8.51%	13.93%	-12.82%
Deferred Revenue	$200.0K
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$1.200M	$1.200M
YoY Change
Total Short-Term Liabilities	$170.4M	$175.8M	$192.5M
YoY Change	-17.08%	-8.68%	8.94%
LONG-TERM LIABILITIES
Long-Term Debt	$492.6M	$371.1M	$370.2M
YoY Change	32.99%	0.24%	0.22%
Other Long-Term Liabilities	$67.00M	$26.30M	$25.80M
YoY Change	0.9%	1.94%	24.04%
Total Long-Term Liabilities	$559.6M	$397.4M	$396.0M
YoY Change	28.11%	0.35%	1.49%
TOTAL LIABILITIES
Total Short-Term Liabilities	$170.4M	$175.8M	$192.5M
Total Long-Term Liabilities	$559.6M	$397.4M	$396.0M
Total Liabilities	$792.3M	$674.9M	$663.5M
YoY Change	16.7%	1.72%	3.82%
SHAREHOLDERS EQUITY
Retained Earnings	$172.8M	$193.0M	$135.6M
YoY Change	15.05%	42.33%	24.4%
Common Stock	$1.063B	$1.062B	$1.058B
YoY Change	0.34%	0.39%	0.44%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$463.4M	$460.1M	$390.9M
YoY Change	10.2%	17.7%	13.07%
Treasury Stock Shares	$6.683M	6.650M shares	5.924M shares
Shareholders Equity	$733.9M	$751.4M	$762.5M
YoY Change
Total Liabilities & Shareholders Equity	$1.526B	$1.426B	$1.426B
YoY Change	7.53%	0.02%	0.23%

Cashflow Statement

Concept	2019 Q4	2019 Q3	2018 Q3
OPERATING ACTIVITIES
Net Income	-$10.60M	$25.40M	$21.70M
YoY Change	-144.92%	17.05%	9.05%
Depreciation, Depletion And Amortization	$12.80M	$12.30M	$11.00M
YoY Change	11.3%	11.82%	7.84%
Cash From Operating Activities	$78.40M	$83.40M	$28.50M
YoY Change	107.96%	192.63%	-51.2%
INVESTING ACTIVITIES
Capital Expenditures	-$19.50M	-$10.80M	-$60.60M
YoY Change	-6.7%	-82.18%	269.51%
Acquisitions
YoY Change
Other Investing Activities	-$53.00M	-$800.0K	-$15.20M
YoY Change	-202.12%	-94.74%	5.56%
Cash From Investing Activities	-$72.50M	-$11.60M	-$75.80M
YoY Change	-333.87%	-84.7%	146.1%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	86.20M	-22.20M	-22.40M
YoY Change	-325.65%	-0.89%	105.5%
NET CHANGE
Cash From Operating Activities	78.40M	83.40M	28.50M
Cash From Investing Activities	-72.50M	-11.60M	-75.80M
Cash From Financing Activities	86.20M	-22.20M	-22.40M
Net Change In Cash	92.10M	49.60M	-69.70M
YoY Change	201.97%	-171.16%	-517.37%
FREE CASH FLOW
Cash From Operating Activities	$78.40M	$83.40M	$28.50M
Capital Expenditures	-$19.50M	-$10.80M	-$60.60M
Free Cash Flow	$97.90M	$94.20M	$89.10M
YoY Change	67.06%	5.72%	19.12%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	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	2019
	dei	Entity Central Index Key EntityCentralIndexKey	0000811596
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	7000	shares
CY2018Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.55
CY2018Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.55
CY2019Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.60
CY2019Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.60
CY2018Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2019Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	1-09447
	dei	Entity Registrant Name EntityRegistrantName	KAISER ALUMINUM CORPORATION
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	94-3030279
CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	90000000	shares
CY2019Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	90000000	shares
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	22471705	shares
CY2019Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	22550827	shares
CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	16234603	shares
CY2019Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	15900956	shares
CY2018Q4	us-gaap	Customer Deposits Current CustomerDepositsCurrent	200000	USD
CY2018Q3	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	400000	USD
	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	1300000	USD
CY2018Q4	us-gaap	Margin Deposit Assets MarginDepositAssets	0	USD
CY2018Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2019Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2018Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2019Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2018Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2019Q3	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2018Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	6237102	shares
CY2019Q3	us-gaap	Treasury Stock Shares TreasuryStockShares	6649871	shares
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2019-09-30
	dei	Entity Address Address Line1 EntityAddressAddressLine1	27422 Portola Parkway
	dei	Entity Address Address Line2 EntityAddressAddressLine2	Suite 200
	dei	Entity Address City Or Town EntityAddressCityOrTown	Foothill Ranch
	dei	Entity Address State Or Province EntityAddressStateOrProvince	CA
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	92610-2831
	dei	City Area Code CityAreaCode	(949)
	dei	Local Phone Number LocalPhoneNumber	614-1740
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
	dei	Security12b Title Security12bTitle	Common stock, par value $0.01 per share
	dei	Trading Symbol TradingSymbol	KALU
	dei	Security Exchange Name SecurityExchangeName	NASDAQ
CY2019Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	15878619	shares
CY2019Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	172100000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	125600000	USD
CY2019Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	188100000	USD
CY2018Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	179800000	USD
CY2019Q3	us-gaap	Other Receivables OtherReceivables	26100000	USD
CY2018Q4	us-gaap	Other Receivables OtherReceivables	25600000	USD
CY2019Q3	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	46100000	USD
CY2018Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	54900000	USD
CY2019Q3	us-gaap	Inventory Net InventoryNet	192500000	USD
CY2018Q4	us-gaap	Inventory Net InventoryNet	215100000	USD
CY2019Q3	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	18400000	USD
CY2018Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	18900000	USD
CY2019Q3	us-gaap	Assets Current AssetsCurrent	668600000	USD
CY2018Q4	us-gaap	Assets Current AssetsCurrent	656600000	USD
CY2019Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	614300000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	611800000	USD
CY2019Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	26300000	USD
CY2018Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	0	USD
CY2019Q3	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	6300000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	35900000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	30300000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	32400000	USD
CY2019Q3	us-gaap	Goodwill Goodwill	44000000.0	USD
CY2018Q4	us-gaap	Goodwill Goodwill	44000000.0	USD
CY2019Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	36500000	USD
CY2018Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	38600000	USD
CY2019Q3	us-gaap	Assets Assets	1426300000	USD
CY2018Q4	us-gaap	Assets Assets	1419300000	USD
CY2019Q3	us-gaap	Accounts Payable Current AccountsPayableCurrent	93800000	USD
CY2018Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	121400000	USD
CY2019Q3	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	31900000	USD
CY2018Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	40100000	USD
CY2019Q3	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	50100000	USD
CY2018Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	44000000.0	USD
CY2019Q3	us-gaap	Liabilities Current LiabilitiesCurrent	175800000	USD
CY2018Q4	us-gaap	Liabilities Current LiabilitiesCurrent	205500000	USD
CY2019Q3	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	25600000	USD
CY2018Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	0	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	740400000	USD
CY2019Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1426300000	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1419300000	USD
CY2019Q3	us-gaap	Revenues Revenues	374900000	USD
CY2018Q3	us-gaap	Revenues Revenues	393100000	USD
	us-gaap	Revenues Revenues	1145400000	USD
CY2019Q3	kalu	Net Liability In Respect Of Veba NetLiabilityInRespectOfVeba	32800000	USD
CY2018Q4	kalu	Net Liability In Respect Of Veba NetLiabilityInRespectOfVeba	32400000	USD
CY2019Q3	us-gaap	Deferred Tax Liabilities Gross Noncurrent DeferredTaxLiabilitiesGrossNoncurrent	4200000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Gross Noncurrent DeferredTaxLiabilitiesGrossNoncurrent	4200000	USD
CY2019Q3	us-gaap	Liabilities Other Than Longterm Debt Noncurrent LiabilitiesOtherThanLongtermDebtNoncurrent	65400000	USD
CY2018Q4	us-gaap	Liabilities Other Than Longterm Debt Noncurrent LiabilitiesOtherThanLongtermDebtNoncurrent	66400000	USD
CY2019Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	371100000	USD
CY2018Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	370400000	USD
CY2019Q3	us-gaap	Liabilities Liabilities	674900000	USD
CY2018Q4	us-gaap	Liabilities Liabilities	678900000	USD
CY2019Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2018Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2019Q3	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2018Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2019Q3	us-gaap	Common Stock Value CommonStockValue	200000	USD
CY2018Q4	us-gaap	Common Stock Value CommonStockValue	200000	USD
CY2019Q3	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1061500000	USD
CY2018Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1059300000	USD
CY2019Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	193000000.0	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	150200000	USD
CY2019Q3	us-gaap	Treasury Stock Value TreasuryStockValue	460100000	USD
CY2018Q4	us-gaap	Treasury Stock Value TreasuryStockValue	420500000	USD
CY2019Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-43200000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-48800000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	751400000	USD
	us-gaap	Revenues Revenues	1196500000	USD
CY2019Q3	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	298600000	USD
CY2018Q3	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	323300000	USD
	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	917200000	USD
	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	983400000	USD
CY2019Q3	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	12300000	USD
CY2018Q3	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	11000000.0	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	36300000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	32400000	USD
CY2019Q3	kalu	Selling Administrative Research And Development And General Expenses SellingAdministrativeResearchAndDevelopmentAndGeneralExpenses	23300000	USD
CY2018Q3	kalu	Selling Administrative Research And Development And General Expenses SellingAdministrativeResearchAndDevelopmentAndGeneralExpenses	23900000	USD
	kalu	Selling Administrative Research And Development And General Expenses SellingAdministrativeResearchAndDevelopmentAndGeneralExpenses	75700000	USD
	kalu	Selling Administrative Research And Development And General Expenses SellingAdministrativeResearchAndDevelopmentAndGeneralExpenses	73900000	USD
CY2019Q3	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	0	USD
CY2018Q3	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	0	USD
	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	100000	USD
	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	100000	USD
CY2019Q3	us-gaap	Costs And Expenses CostsAndExpenses	334200000	USD
CY2018Q3	us-gaap	Costs And Expenses CostsAndExpenses	358200000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	1029300000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	1089800000	USD
CY2019Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	40700000	USD
CY2018Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	34900000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	116100000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	106700000	USD
CY2019Q3	us-gaap	Interest Expense InterestExpense	5800000	USD
CY2018Q3	us-gaap	Interest Expense InterestExpense	5700000	USD
	us-gaap	Interest Expense InterestExpense	17300000	USD
	us-gaap	Interest Expense InterestExpense	17000000.0	USD
CY2019Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-800000	USD
CY2018Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	700000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-400000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	300000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	34100000	USD
CY2018Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	29900000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	98400000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	90000000.0	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8700000	USD
CY2018Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8200000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	25800000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	21900000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	25400000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	21700000	USD
	us-gaap	Net Income Loss NetIncomeLoss	72600000	USD
	us-gaap	Net Income Loss NetIncomeLoss	68100000	USD
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.59
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.31
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.52
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.09
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.57
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.29
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.47
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.03
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	15956000	shares
CY2018Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	16573000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	16042000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	16654000	shares
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	16125000	shares
CY2018Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	16783000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	16235000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	16882000	shares
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	25400000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	21700000	USD
	us-gaap	Net Income Loss NetIncomeLoss	72600000	USD
	us-gaap	Net Income Loss NetIncomeLoss	68100000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-1200000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-1100000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-3400000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-3500000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	100000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-200000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-200000	USD
	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-500000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-2200000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-1700000	USD
	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	2400000	USD
	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-5700000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-900000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-800000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	5600000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-2700000	USD
CY2019Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	24500000	USD
CY2018Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	20900000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	78200000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	65400000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	740400000	USD
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	28000000.0	USD
CY2019Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	9700000	USD
CY2019Q1	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	5000000.0	USD
CY2019Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	17400000	USD
CY2019Q1	us-gaap	Dividends Cash DividendsCash	10200000	USD
CY2019Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2400000	USD
CY2019Q1	us-gaap	Stockholders Equity StockholdersEquity	747900000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	19200000	USD
CY2019Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-3200000	USD
CY2019Q2	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	300000	USD
CY2018Q3	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.55
	us-gaap	Net Income Loss NetIncomeLoss	72600000	USD
	us-gaap	Net Income Loss NetIncomeLoss	68100000	USD
CY2018Q1	us-gaap	Stockholders Equity StockholdersEquity	753600000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	20700000	USD
CY2018Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	6400000	USD
CY2018Q2	us-gaap	Stock Issued During Period Value Issued For Services StockIssuedDuringPeriodValueIssuedForServices	200000	USD
CY2019Q2	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	1200000	USD
CY2019Q2	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	10200000	USD
CY2019Q2	us-gaap	Dividends Cash DividendsCash	9900000	USD
CY2019Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3400000	USD
CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	746300000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	25400000	USD
CY2019Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-900000	USD
CY2019Q3	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	12000000.0	USD
CY2019Q3	us-gaap	Dividends Cash DividendsCash	9700000	USD
CY2019Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2300000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	751400000	USD
CY2019Q1	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	98.55
CY2019Q2	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	95.00
CY2019Q3	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	92.95
CY2019Q3	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount1 StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1	108900000	USD
CY2019Q1	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.60
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	746300000	USD
CY2017Q4	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	10100000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest Adjusted Balance1 StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	756400000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	25700000	USD
CY2018Q1	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-8300000	USD
CY2018Q1	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	6900000	USD
CY2018Q1	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	6100000	USD
CY2018Q1	us-gaap	Dividends Cash DividendsCash	10000000.0	USD
CY2018Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2800000	USD
CY2018Q2	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	13300000	USD
CY2018Q2	us-gaap	Dividends Cash DividendsCash	9300000	USD
CY2018Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2700000	USD
CY2018Q2	us-gaap	Stockholders Equity StockholdersEquity	761000000.0	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	21700000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-800000	USD
CY2018Q3	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	12900000	USD
CY2018Q3	us-gaap	Dividends Cash DividendsCash	9200000	USD
CY2018Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2700000	USD
CY2018Q3	us-gaap	Stockholders Equity StockholdersEquity	762500000	USD
CY2018Q1	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	104.50
CY2018Q2	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	104.74
CY2018Q3	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	108.07
	us-gaap	Depreciation Depreciation	34200000	USD
	us-gaap	Depreciation Depreciation	31300000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2100000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1100000	USD
	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	900000	USD
	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	800000	USD
	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	27800000	USD
	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	27400000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	8400000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	8400000	USD
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	600000	USD
	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	2400000	USD
	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	100000	USD
	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	100000	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	200000	USD
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-9300000	USD
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-20200000	USD
	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	8800000	USD
	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	35700000	USD
	us-gaap	Increase Decrease In Contract Receivables Net IncreaseDecreaseInContractReceivablesNet	-8800000	USD
	us-gaap	Increase Decrease In Contract Receivables Net IncreaseDecreaseInContractReceivablesNet	-4600000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-22600000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	25600000	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	1600000	USD
	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	-21900000	USD
	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	31100000	USD
	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-3300000	USD
	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-1000000.0	USD
	us-gaap	Other Postretirement Benefits Payments OtherPostretirementBenefitsPayments	2100000	USD
	us-gaap	Other Postretirement Benefits Payments OtherPostretirementBenefitsPayments	15700000	USD
	us-gaap	Increase Decrease In Other Noncurrent Assets And Liabilities Net IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet	-5600000	USD
	us-gaap	Increase Decrease In Other Noncurrent Assets And Liabilities Net IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet	-1600000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	153900000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	112500000	USD
	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	40700000	USD
	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	53100000	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	56300000	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	111900000	USD
	us-gaap	Payments To Acquire Available For Sale Securities Equity PaymentsToAcquireAvailableForSaleSecuritiesEquity	700000	USD
	us-gaap	Payments To Acquire Available For Sale Securities Equity PaymentsToAcquireAvailableForSaleSecuritiesEquity	900000	USD
	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	68200000	USD
	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	208700000	USD
CY2018Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	109100000	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	43300000	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	200000	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	600000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-29300000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	100000	USD
	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	1100000	USD
	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	500000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	6200000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	6900000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	40600000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	31900000	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	29800000	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	28500000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-77700000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-67800000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	46900000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	44800000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	139600000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	64300000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	186500000	USD
	us-gaap	Use Of Estimates UseOfEstimates	<span style="font-family:inherit;font-size:10pt;font-style:italic;">Use of Estimates in the Preparation of Financial Statements.</span> 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 our 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 our consolidated financial position and results of operations.
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	40100000	USD
CY2019Q3	us-gaap	Excess Of Replacement Or Current Costs Over Stated Lifo Value ExcessOfReplacementOrCurrentCostsOverStatedLIFOValue	17500000	USD
CY2018Q4	us-gaap	Excess Of Replacement Or Current Costs Over Stated Lifo Value ExcessOfReplacementOrCurrentCostsOverStatedLIFOValue	31700000	USD
CY2019Q3	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	400000	USD
	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	1300000	USD
CY2019Q3	kalu	Workerscompensationliabilityundiscounted Workerscompensationliabilityundiscounted	28000000.0	USD
CY2018Q4	kalu	Workerscompensationliabilityundiscounted Workerscompensationliabilityundiscounted	27600000	USD
	us-gaap	Workers Compensation Discount Percent WorkersCompensationDiscountPercent	0.0175
CY2018	us-gaap	Workers Compensation Discount Percent WorkersCompensationDiscountPercent	0.0300
CY2019Q3	us-gaap	Accrued Employee Benefits Current And Noncurrent AccruedEmployeeBenefitsCurrentAndNoncurrent	3300000	USD
CY2018Q4	us-gaap	Accrued Employee Benefits Current And Noncurrent AccruedEmployeeBenefitsCurrentAndNoncurrent	3600000	USD
CY2019Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant	481282	shares
CY2019Q3	us-gaap	Cash Cash	29300000	USD
CY2018Q4	us-gaap	Cash Cash	22900000	USD
CY2019Q3	us-gaap	Commercial Paper At Carrying Value CommercialPaperAtCarryingValue	142800000	USD
CY2018Q4	us-gaap	Commercial Paper At Carrying Value CommercialPaperAtCarryingValue	102700000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents And Short Term Investments CashCashEquivalentsAndShortTermInvestments	172100000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents And Short Term Investments CashCashEquivalentsAndShortTermInvestments	125600000	USD
CY2019Q3	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	188900000	USD
CY2018Q4	us-gaap	Accounts Receivable Gross Current AccountsReceivableGrossCurrent	180600000	USD
CY2019Q3	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	800000	USD
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	800000	USD
CY2019Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	614300000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	611800000	USD
CY2019Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	188100000	USD
CY2018Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	179800000	USD
CY2019Q3	us-gaap	Inventory Finished Goods InventoryFinishedGoods	41400000	USD
CY2018Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	48000000.0	USD
CY2019Q3	us-gaap	Inventory Work In Process InventoryWorkInProcess	80500000	USD
CY2018Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	85600000	USD
CY2019Q3	us-gaap	Inventory Raw Materials InventoryRawMaterials	63700000	USD
CY2018Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	75000000.0	USD
CY2019Q3	us-gaap	Other Inventory Supplies OtherInventorySupplies	6900000	USD
CY2018Q4	us-gaap	Other Inventory Supplies OtherInventorySupplies	6500000	USD
CY2019Q3	us-gaap	Inventory Net InventoryNet	192500000	USD
CY2018Q4	us-gaap	Inventory Net InventoryNet	215100000	USD
CY2019Q3	us-gaap	Land Land	21400000	USD
CY2018Q4	us-gaap	Land Land	21400000	USD
CY2019Q3	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	99200000	USD
CY2018Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	97000000.0	USD
CY2019Q3	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	797900000	USD
CY2018Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	755600000	USD
CY2019Q3	us-gaap	Construction In Progress Gross ConstructionInProgressGross	35400000	USD
CY2018Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	43600000	USD
CY2019Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	953900000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	917600000	USD
CY2019Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	341200000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	307400000	USD
CY2019Q3	us-gaap	Assets Held For Sale Not Part Of Disposal Group AssetsHeldForSaleNotPartOfDisposalGroup	1600000	USD
CY2018Q4	us-gaap	Assets Held For Sale Not Part Of Disposal Group AssetsHeldForSaleNotPartOfDisposalGroup	1600000	USD
CY2019Q3	us-gaap	Bank Overdrafts BankOverdrafts	3700000	USD
CY2018Q4	us-gaap	Bank Overdrafts BankOverdrafts	4800000	USD
CY2019Q3	us-gaap	Taxes Payable Current TaxesPayableCurrent	8000000.0	USD
CY2018Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	6500000	USD
CY2019Q3	kalu	Accrued Annual Veba Contribution AccruedAnnualVebaContribution	0	USD
CY2018Q4	kalu	Accrued Annual Veba Contribution AccruedAnnualVebaContribution	2100000	USD
CY2019Q3	us-gaap	Interest Payable Current InterestPayableCurrent	8400000	USD
CY2018Q4	us-gaap	Interest Payable Current InterestPayableCurrent	2900000	USD
CY2019Q3	us-gaap	Accrued Environmental Loss Contingencies Current AccruedEnvironmentalLossContingenciesCurrent	4300000	USD
CY2018Q4	us-gaap	Accrued Environmental Loss Contingencies Current AccruedEnvironmentalLossContingenciesCurrent	2600000	USD
CY2019Q3	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	25700000	USD
CY2018Q4	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	25100000	USD
CY2019Q3	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	50100000	USD
CY2018Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	44000000.0	USD
CY2019Q3	us-gaap	Self Insurance Reserve Noncurrent SelfInsuranceReserveNoncurrent	26900000	USD
CY2018Q4	us-gaap	Self Insurance Reserve Noncurrent SelfInsuranceReserveNoncurrent	24600000	USD
CY2019Q3	us-gaap	Accrued Environmental Loss Contingencies Noncurrent AccruedEnvironmentalLossContingenciesNoncurrent	12200000	USD
CY2018Q4	us-gaap	Accrued Environmental Loss Contingencies Noncurrent AccruedEnvironmentalLossContingenciesNoncurrent	14300000	USD
CY2019Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	26300000	USD
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	27500000	USD
CY2019Q3	us-gaap	Liabilities Other Than Longterm Debt Noncurrent LiabilitiesOtherThanLongtermDebtNoncurrent	65400000	USD
CY2018Q4	us-gaap	Liabilities Other Than Longterm Debt Noncurrent LiabilitiesOtherThanLongtermDebtNoncurrent	66400000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Renewal Term LesseeOperatingLeaseRenewalTerm	P20Y
	kalu	Lessee Operating Lease Optionto Terminate Duration LesseeOperatingLeaseOptiontoTerminateDuration	P1Y
CY2019Q3	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P6Y
CY2019Q3	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P10Y6M
CY2019Q3	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.045
CY2019Q3	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.059
CY2019Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	26300000	USD
CY2019Q3	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	6800000	USD
CY2019Q3	kalu	Rightof Use Asset Total RightofUseAssetTotal	33100000	USD
CY2019Q3	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	3900000	USD
CY2019Q3	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	1200000	USD
CY2019Q3	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	25600000	USD
CY2019Q3	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	1000000.0	USD
CY2019Q3	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	5600000	USD
CY2019Q3	kalu	Lease Liability Total LeaseLiabilityTotal	36300000	USD
CY2019Q3	us-gaap	Operating Lease Cost OperatingLeaseCost	1800000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	5600000	USD
CY2019Q3	us-gaap	Short Term Lease Cost ShortTermLeaseCost	300000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	800000	USD
CY2019Q3	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	500000	USD
	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	1200000	USD
CY2019Q3	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	0	USD
	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	200000	USD
CY2019Q3	us-gaap	Lease Cost LeaseCost	2600000	USD
	us-gaap	Lease Cost LeaseCost	7800000	USD
CY2019Q3	us-gaap	Finance Lease Liability Payments Remainder Of Fiscal Year FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear	400000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	1300000	USD
CY2019Q3	kalu	Finance Lease Liability Payments Due Year One FinanceLeaseLiabilityPaymentsDueYearOne	1600000	USD
CY2019Q3	kalu	Operating Lease Liability Payments Due Year One OperatingLeaseLiabilityPaymentsDueYearOne	5200000	USD
CY2019Q3	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	1400000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	4400000	USD
CY2019Q3	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	1200000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	3600000	USD
CY2019Q3	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	1100000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	3400000	USD
CY2019Q3	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	700000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	3300000	USD
CY2019Q3	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	1400000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	18900000	USD
CY2019Q3	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	7800000	USD
	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	917200000	USD
CY2019Q3	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	10600000	USD
CY2019Q3	us-gaap	Finance Lease Liability FinanceLeaseLiability	6800000	USD
CY2019Q3	us-gaap	Operating Lease Liability OperatingLeaseLiability	29500000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	1700000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	6100000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	1400000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	3700000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	1200000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	2800000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	1100000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	2400000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	1000000.0	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	2200000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due Thereafter CapitalLeasesFutureMinimumPaymentsDueThereafter	1800000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	20800000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	8200000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	38000000.0	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Interest Included In Payments CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments	1200000	USD
CY2018Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	7000000.0	USD
CY2018Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	7000000.0	USD
CY2018Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	8300000	USD
CY2018Q4	us-gaap	Capital Leases Lessee Balance Sheet Assets By Major Class Accumulated Deprecation CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation	1300000	USD
CY2019Q3	us-gaap	Margin Deposit Assets MarginDepositAssets	0	USD
CY2019Q3	us-gaap	Customer Deposits Current CustomerDepositsCurrent	200000	USD
CY2019Q3	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	298600000	USD
	us-gaap	Debt Instrument Term DebtInstrumentTerm	P12M
CY2019Q3	us-gaap	Accrual For Environmental Loss Contingencies AccrualForEnvironmentalLossContingencies	16500000	USD
	kalu	Expected Period Related To Remediation Expenditures For Environmental Contingencies Period ExpectedPeriodRelatedToRemediationExpendituresForEnvironmentalContingenciesPeriod	P30Y
CY2019Q3	us-gaap	Loss Contingency Range Of Possible Loss Portion Not Accrued LossContingencyRangeOfPossibleLossPortionNotAccrued	11600000	USD
CY2019Q3	kalu	Time Period Within Which Companys Recorded Estimate Of Its Obligation May Change TimePeriodWithinWhichCompanysRecordedEstimateOfItsObligationMayChange	P12M
	us-gaap	Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths	12200000	USD
CY2019Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	200000	USD
CY2018Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	100000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	500000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	200000	USD
CY2019Q3	kalu	Defined Benefit Plan Net Periodic Cost Benefit Veb As DefinedBenefitPlanNetPeriodicCostBenefitVEBAs	1600000	USD
CY2018Q3	kalu	Defined Benefit Plan Net Periodic Cost Benefit Veb As DefinedBenefitPlanNetPeriodicCostBenefitVEBAs	1400000	USD
	kalu	Defined Benefit Plan Net Periodic Cost Benefit Veb As DefinedBenefitPlanNetPeriodicCostBenefitVEBAs	4900000	USD
	kalu	Defined Benefit Plan Net Periodic Cost Benefit Veb As DefinedBenefitPlanNetPeriodicCostBenefitVEBAs	4500000	USD
CY2019Q3	us-gaap	Available For Sale Securities Gross Realized Gain Loss Net AvailableForSaleSecuritiesGrossRealizedGainLossNet	900000	USD
CY2018Q3	us-gaap	Available For Sale Securities Gross Realized Gain Loss Net AvailableForSaleSecuritiesGrossRealizedGainLossNet	1600000	USD
	us-gaap	Available For Sale Securities Gross Realized Gain Loss Net AvailableForSaleSecuritiesGrossRealizedGainLossNet	3000000.0	USD
	us-gaap	Available For Sale Securities Gross Realized Gain Loss Net AvailableForSaleSecuritiesGrossRealizedGainLossNet	4300000	USD
CY2019Q3	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	100000	USD
CY2018Q3	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	100000	USD
	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	600000	USD
	us-gaap	Equity Securities Fv Ni Gain Loss EquitySecuritiesFvNiGainLoss	-300000	USD
CY2019Q3	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	-400000	USD
CY2018Q3	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	300000	USD
	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	400000	USD
	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	600000	USD
CY2019Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-800000	USD
CY2018Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	700000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-400000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	300000	USD
CY2019Q3	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	8500000	USD
CY2018Q3	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	7500000	USD
	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	24700000	USD
	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	20500000	USD
CY2019Q3	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	200000	USD
CY2018Q3	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	700000	USD
	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	1100000	USD
	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	1400000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8700000	USD
CY2018Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8200000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	25800000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	21900000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8700000	USD
CY2018Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8200000	USD
CY2019Q3	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.26
CY2018Q3	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.27
CY2019Q3	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	500000	USD
CY2019Q3	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.02
CY2018Q3	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	600000	USD
CY2018Q3	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.02
CY2018Q3	kalu	Effective Income Tax Rate Reconciliation Advance Pricing Agreement Amount EffectiveIncomeTaxRateReconciliationAdvancePricingAgreementAmount	300000	USD
CY2018Q3	kalu	Effective Income Tax Rate Reconciliation Advance Pricing Agreement Percent EffectiveIncomeTaxRateReconciliationAdvancePricingAgreementPercent	0.01
CY2018Q3	kalu	Effective Income Tax Rate Reconciliation Sequestrationof Amt Credits Amount EffectiveIncomeTaxRateReconciliationSequestrationofAMTCreditsAmount	200000	USD
CY2018Q3	kalu	Effective Income Tax Rate Reconciliation Sequestrationof Amt Credits Percent EffectiveIncomeTaxRateReconciliationSequestrationofAMTCreditsPercent	0.01
CY2018Q3	us-gaap	Income Tax Reconciliation Tax Contingencies State And Local IncomeTaxReconciliationTaxContingenciesStateAndLocal	-400000	USD
CY2018Q3	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies State And Local EffectiveIncomeTaxRateReconciliationTaxContingenciesStateAndLocal	-0.01
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	25800000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	21900000	USD
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.26
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.24
	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	1500000	USD
	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.02
	us-gaap	Income Tax Reconciliation Tax Contingencies State And Local IncomeTaxReconciliationTaxContingenciesStateAndLocal	600000	USD
	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies State And Local EffectiveIncomeTaxRateReconciliationTaxContingenciesStateAndLocal	0.01
	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	-600000	USD
	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	-0.01
	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	-2000000.0	USD
	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	-0.02
	us-gaap	Income Tax Reconciliation Tax Contingencies State And Local IncomeTaxReconciliationTaxContingenciesStateAndLocal	-900000	USD
	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies State And Local EffectiveIncomeTaxRateReconciliationTaxContingenciesStateAndLocal	-0.01
	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	1700000	USD
	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.02
	kalu	Effective Income Tax Rate Reconciliation Sequestrationof Amt Credits Amount EffectiveIncomeTaxRateReconciliationSequestrationofAMTCreditsAmount	600000	USD
	kalu	Effective Income Tax Rate Reconciliation Sequestrationof Amt Credits Percent EffectiveIncomeTaxRateReconciliationSequestrationofAMTCreditsPercent	0.01
CY2019Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1700000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	1500000	USD
CY2019Q3	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	600000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	400000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	25400000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	21700000	USD
	us-gaap	Net Income Loss NetIncomeLoss	72600000	USD
	us-gaap	Net Income Loss NetIncomeLoss	68100000	USD
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	15956000	shares
CY2018Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	16573000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	16042000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	16654000	shares
CY2019Q3	us-gaap	Incremental Common Shares Attributable To Nonvested Shares With Forfeitable Dividends IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends	169000	shares
CY2018Q3	us-gaap	Incremental Common Shares Attributable To Nonvested Shares With Forfeitable Dividends IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends	210000	shares
	us-gaap	Incremental Common Shares Attributable To Nonvested Shares With Forfeitable Dividends IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends	193000	shares
	us-gaap	Incremental Common Shares Attributable To Nonvested Shares With Forfeitable Dividends IncrementalCommonSharesAttributableToNonvestedSharesWithForfeitableDividends	228000	shares
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	16125000	shares
CY2018Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	16783000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	16235000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	16882000	shares
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.59
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.31
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.52
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.09
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.57
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.29
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.47
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.03
CY2019Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	7000	shares
CY2018Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	0	shares
	us-gaap	Interest Paid Net InterestPaidNet	10600000	USD
	us-gaap	Interest Paid Net InterestPaidNet	10600000	USD
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	3300000	USD
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	5800000	USD
	us-gaap	Other Significant Noncash Transaction Value Of Consideration Given1 OtherSignificantNoncashTransactionValueOfConsiderationGiven1	300000	USD
	us-gaap	Other Significant Noncash Transaction Value Of Consideration Given1 OtherSignificantNoncashTransactionValueOfConsiderationGiven1	400000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	1600000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	2800000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	900000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	300000	USD
CY2019Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	172100000	USD
CY2018Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	94300000	USD
CY2019Q3	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	300000	USD
CY2018Q3	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	300000	USD
CY2019Q3	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	14100000	USD
CY2018Q3	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	14500000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	186500000	USD
CY2018Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	109100000	USD
CY2019Q3	kalu	Percentageof Employees Coveredby Collective Bargaining Agreements PercentageofEmployeesCoveredbyCollectiveBargainingAgreements	0.62
CY2019Q3	kalu	Percentageof Employees Coveredby Collective Bargaining Agreements Expiring Within One Year PercentageofEmployeesCoveredbyCollectiveBargainingAgreementsExpiringWithinOneYear	0.35
CY2019Q3	us-gaap	Revenues Revenues	374900000	USD
CY2018Q3	us-gaap	Revenues Revenues	393100000	USD
	us-gaap	Revenues Revenues	1145400000	USD
	us-gaap	Revenues Revenues	1196500000	USD
CY2019Q3	us-gaap	Revenues Revenues	374900000	USD
CY2018Q3	us-gaap	Revenues Revenues	393100000	USD
	us-gaap	Revenues Revenues	1145400000	USD
	us-gaap	Revenues Revenues	1196500000	USD
CY2019Q3	us-gaap	Income Taxes Paid IncomeTaxesPaid	500000	USD
CY2018Q3	us-gaap	Income Taxes Paid IncomeTaxesPaid	400000	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	3600000	USD
	us-gaap	Income Taxes Paid IncomeTaxesPaid	3300000	USD
CY2019Q3	kalu	Ownership Interest In Subsidiaries OwnershipInterestInSubsidiaries	1
CY2019Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	172100000	USD
CY2019Q3	us-gaap	Available For Sale Securities Current AvailableForSaleSecuritiesCurrent	25300000	USD
CY2019Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	188100000	USD
CY2019Q3	kalu	Intercompany Receivables Current IntercompanyReceivablesCurrent	0	USD
CY2019Q3	us-gaap	Other Receivables OtherReceivables	26100000	USD
CY2019Q3	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	46100000	USD
CY2019Q3	us-gaap	Inventory Net InventoryNet	192500000	USD
CY2019Q3	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	18400000	USD
CY2019Q3	us-gaap	Assets Current AssetsCurrent	668600000	USD
CY2019Q3	us-gaap	Investments In And Advances To Affiliates At Fair Value InvestmentsInAndAdvancesToAffiliatesAtFairValue	0	USD
CY2019Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	614300000	USD
CY2019Q3	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	26300000	USD
CY2019Q3	kalu	Intercompany Receivables Noncurrent IntercompanyReceivablesNoncurrent	0	USD
CY2019Q3	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	6300000	USD
CY2019Q3	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	30300000	USD
CY2019Q3	us-gaap	Goodwill Goodwill	44000000.0	USD
CY2019Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	36500000	USD
CY2019Q3	us-gaap	Assets Assets	1426300000	USD
CY2019Q3	us-gaap	Accounts Payable Current AccountsPayableCurrent	93800000	USD
CY2019Q3	kalu	Intercompany Payable Current IntercompanyPayableCurrent	0	USD
CY2019Q3	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	31900000	USD
CY2019Q3	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	50100000	USD
CY2019Q3	us-gaap	Liabilities Current LiabilitiesCurrent	175800000	USD
CY2019Q3	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	25600000	USD
CY2019Q3	kalu	Net Liability In Respect Of Veba NetLiabilityInRespectOfVeba	32800000	USD
CY2019Q3	us-gaap	Deferred Tax Liabilities Gross Noncurrent DeferredTaxLiabilitiesGrossNoncurrent	4200000	USD
CY2019Q3	kalu	Intercompany Payable Noncurrent IntercompanyPayableNoncurrent	0	USD
CY2019Q3	us-gaap	Liabilities Other Than Longterm Debt Noncurrent LiabilitiesOtherThanLongtermDebtNoncurrent	65400000	USD
CY2019Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	371100000	USD
CY2019Q3	us-gaap	Liabilities Liabilities	674900000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	751400000	USD
CY2019Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1426300000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	125600000	USD
CY2018Q4	us-gaap	Available For Sale Securities Current AvailableForSaleSecuritiesCurrent	36700000	USD
CY2018Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	179800000	USD
CY2018Q4	kalu	Intercompany Receivables Current IntercompanyReceivablesCurrent	0	USD
CY2018Q4	us-gaap	Other Receivables OtherReceivables	25600000	USD
CY2018Q4	us-gaap	Contract With Customer Asset Net Current ContractWithCustomerAssetNetCurrent	54900000	USD
CY2018Q4	us-gaap	Inventory Net InventoryNet	215100000	USD
CY2018Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	18900000	USD
CY2018Q4	us-gaap	Assets Current AssetsCurrent	656600000	USD
CY2018Q4	us-gaap	Investments In And Advances To Affiliates At Fair Value InvestmentsInAndAdvancesToAffiliatesAtFairValue	0	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	611800000	USD
CY2018Q4	kalu	Intercompany Receivables Noncurrent IntercompanyReceivablesNoncurrent	0	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	35900000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	32400000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	44000000.0	USD
CY2018Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	38600000	USD
CY2018Q4	us-gaap	Assets Assets	1419300000	USD
CY2018Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	121400000	USD
CY2018Q4	kalu	Intercompany Payable Current IntercompanyPayableCurrent	0	USD
CY2018Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	40100000	USD
CY2018Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	44000000.0	USD
CY2018Q4	us-gaap	Liabilities Current LiabilitiesCurrent	205500000	USD
CY2018Q4	kalu	Net Liability In Respect Of Veba NetLiabilityInRespectOfVeba	32400000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Gross Noncurrent DeferredTaxLiabilitiesGrossNoncurrent	4200000	USD
CY2018Q4	kalu	Intercompany Payable Noncurrent IntercompanyPayableNoncurrent	0	USD
CY2018Q4	us-gaap	Liabilities Other Than Longterm Debt Noncurrent LiabilitiesOtherThanLongtermDebtNoncurrent	66400000	USD
CY2018Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	370400000	USD
CY2018Q4	us-gaap	Liabilities Liabilities	678900000	USD
CY2019Q3	us-gaap	Revenues Revenues	374900000	USD
CY2019Q3	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	298600000	USD
CY2019Q3	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	12300000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	740400000	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1419300000	USD
CY2019Q3	kalu	Selling Administrative Research And Development And General Expenses SellingAdministrativeResearchAndDevelopmentAndGeneralExpenses	23300000	USD
CY2019Q3	us-gaap	Costs And Expenses CostsAndExpenses	334200000	USD
CY2019Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	40700000	USD
CY2019Q3	us-gaap	Interest Expense InterestExpense	5800000	USD
CY2019Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-800000	USD
CY2019Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	34100000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8700000	USD
CY2019Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	25400000	USD
CY2019Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	24500000	USD
CY2018Q3	us-gaap	Revenues Revenues	393100000	USD
CY2018Q3	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	323300000	USD
CY2018Q3	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	11000000.0	USD
CY2018Q3	kalu	Selling Administrative Research And Development And General Expenses SellingAdministrativeResearchAndDevelopmentAndGeneralExpenses	23900000	USD
CY2018Q3	us-gaap	Costs And Expenses CostsAndExpenses	358200000	USD
CY2018Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	34900000	USD
CY2018Q3	us-gaap	Interest Expense InterestExpense	5700000	USD
CY2018Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	700000	USD
CY2018Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	29900000	USD
CY2018Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8200000	USD
CY2018Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	21700000	USD
CY2018Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	20900000	USD
	us-gaap	Revenues Revenues	1145400000	USD
	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	917200000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	36300000	USD
	kalu	Selling Administrative Research And Development And General Expenses SellingAdministrativeResearchAndDevelopmentAndGeneralExpenses	75700000	USD
	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	100000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	1029300000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	116100000	USD
	us-gaap	Interest Expense InterestExpense	17300000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-400000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	98400000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	25800000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
	us-gaap	Net Income Loss NetIncomeLoss	72600000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	78200000	USD
	us-gaap	Revenues Revenues	1196500000	USD
	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	983400000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	32400000	USD
	kalu	Selling Administrative Research And Development And General Expenses SellingAdministrativeResearchAndDevelopmentAndGeneralExpenses	73900000	USD
	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	100000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	1089800000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	106700000	USD
	us-gaap	Interest Expense InterestExpense	17000000.0	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	300000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	90000000.0	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	21900000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
	us-gaap	Net Income Loss NetIncomeLoss	68100000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	65400000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	153900000	USD
	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	40700000	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	56300000	USD
	us-gaap	Payments To Acquire Available For Sale Securities Equity PaymentsToAcquireAvailableForSaleSecuritiesEquity	700000	USD
	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	68200000	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	200000	USD
	kalu	Changein Intercompany Loans Receivable ChangeinIntercompanyLoansReceivable	0	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-29300000	USD
	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	1100000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	6200000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	40600000	USD
	us-gaap	Cash Dividends Paid To Parent Company By Consolidated Subsidiaries CashDividendsPaidToParentCompanyByConsolidatedSubsidiaries	0	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	29800000	USD
	kalu	Changein Intercompany Loans Payable ChangeinIntercompanyLoansPayable	0	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-77700000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	46900000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	139600000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	186500000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	112500000	USD
	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	53100000	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	111900000	USD
	us-gaap	Payments To Acquire Available For Sale Securities Equity PaymentsToAcquireAvailableForSaleSecuritiesEquity	900000	USD
	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	208700000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	43300000	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	600000	USD
	kalu	Changein Intercompany Loans Receivable ChangeinIntercompanyLoansReceivable	0	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	100000	USD
	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	500000	USD
	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	6900000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	31900000	USD
	us-gaap	Cash Dividends Paid To Parent Company By Consolidated Subsidiaries CashDividendsPaidToParentCompanyByConsolidatedSubsidiaries	0	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	28500000	USD
	kalu	Changein Intercompany Loans Payable ChangeinIntercompanyLoansPayable	0	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-67800000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	44800000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	64300000	USD
CY2018Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	109100000	USD

Files In Submission

Name	View Source	Status
0000811596-19-000056-index-headers.html	Edgar Link	pending
0000811596-19-000056-index.html	Edgar Link	pending
0000811596-19-000056.txt	Edgar Link	pending
0000811596-19-000056-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
kalu-20190930.xsd	Edgar Link	pending
kalu-20190930_cal.xml	Edgar Link	unprocessable
kalu-20190930_def.xml	Edgar Link	unprocessable
kalu-20190930_lab.xml	Edgar Link	unprocessable
kalu-20190930_pre.xml	Edgar Link	unprocessable
kalu930201910-q.htm	Edgar Link	pending
kalu930201910-q_htm.xml	Edgar Link	completed
kaluexhibit311-9302019.htm	Edgar Link	pending
kaluexhibit312-9302019.htm	Edgar Link	pending
kaluexhibit321-9302019.htm	Edgar Link	pending
kaluexhibit322-9302019.htm	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R50.htm	Edgar Link	pending
R51.htm	Edgar Link	pending
R52.htm	Edgar Link	pending
R53.htm	Edgar Link	pending
R54.htm	Edgar Link	pending
R55.htm	Edgar Link	pending
R56.htm	Edgar Link	pending
R57.htm	Edgar Link	pending
R58.htm	Edgar Link	pending
R59.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R60.htm	Edgar Link	pending
R61.htm	Edgar Link	pending
R62.htm	Edgar Link	pending
R63.htm	Edgar Link	pending
R64.htm	Edgar Link	pending
R65.htm	Edgar Link	pending
R66.htm	Edgar Link	pending
R67.htm	Edgar Link	pending
R68.htm	Edgar Link	pending
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

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$KALU
KAISER ALUMINUM CORP Stock $kalu

2019 Q4 Form 10-Q Financial Statement

#000081159619000056 Filed on October 25, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$KALU KAISER ALUMINUM CORP Stock $kalu

2019 Q4 Form 10-Q Financial Statement

#000081159619000056 Filed on October 25, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$KALU
KAISER ALUMINUM CORP Stock $kalu