XML 100 R51.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Employee Incentive Plans, Short Term Incentive Plans (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] |  |  |  |
EVA measurement period |  |  | 1 year |
Compensation charges associated with STI Plans |  |  |  |
Costs recorded in connection with STI plans | $ 4.8 | $ 3.2 | $ 8.9 | $ 7.1
Fabricated Products |  |  |  |
Compensation charges associated with STI Plans |  |  |  |
Costs recorded in connection with STI plans | 3.3 | 2.3 | 6.2 | 5.0
All Other |  |  |  |
Compensation charges associated with STI Plans |  |  |  |
Costs recorded in connection with STI plans | 1.5 | 0.9 | 2.7 | 2.1
Cost of products sold, excluding depreciation and amortization and other items |  |  |  |
Compensation charges associated with STI Plans |  |  |  |
Costs recorded in connection with STI plans | 1.3 | 1.1 | 2.4 | 2.3
Selling, administrative, research and development, and general |  |  |  |
Compensation charges associated with STI Plans |  |  |  |
Costs recorded in connection with STI plans | $ 3.5 | $ 2.1 | $ 6.5 | $ 4.8

X
- Definition EVA measurement period + References No definition available. + Details
Name: | kalu_EvaMeasurementPeriod
Namespace Prefix: | kalu_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | kalu_IncentiveCompensationPlanAbstract
Namespace Prefix: | kalu_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Short Term Incentive Compensation Expense. + References No definition available. + Details
Name: | kalu_ShortTermIncentiveCompensationExpense
Namespace Prefix: | kalu_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration