XML 64 R29.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Leases Leases (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2019
Leases [Abstract] |
Schedule of lease terms and discount rates | The following table presents lease terms and discount rates as of December 31, 2019:
|  | Finance Leases |  | Operating Leases
Weighted-average lease term (in years): |  | 5.8 |  |  | 10.4 |
Weighted-average discount rate: |  | 4.5 | % |  | 5.8 | %
Classification of lease assets and lease liabilities | The following table summarizes the classification of lease assets and lease liabilities on our Consolidated Balance Sheet as of the period presented (in millions of dollars):
Leases |  | Classification |  | December 31, 2019
Assets |  |  |  |
Operating lease assets |  | Operating lease assets |  | $ | 25.8 |
Finance lease assets |  | Property, plant and equipment, net |  | 6.6 |
Total lease assets |  |  |  | $ | 32.4 |
Liabilities |  |  |  |
Current: |  |  |  |
Operating lease liabilities |  | Other accrued liabilities |  | $ | 3.9 |
Finance lease liabilities |  | Other accrued liabilities |  | 1.2 |
Non-current: |  |  |  |
Operating lease liabilities |  | Long-term portion of operating lease liabilities |  | 25.2 |
Finance lease liabilities |  | Long-term liabilities |  | 5.4 |
Total lease liabilities |  |  |  | $ | 35.7 |
Components of lease cost | The following table summarizes the components of lease cost on our Statements of Consolidated Income for the period presented (in millions of dollars):
Lease Cost |  | December 31, 2019
Operating lease cost |  | $ | 7.5 |
Short-term lease cost |  | 1.2 |
Finance lease cost: |  |
Amortization of leased assets |  | 1.5 |
Interest on lease liabilities |  | 0.3 |
Total lease cost |  | $ | 10.5 |
Maturity of lease liabilities | The following table presents the maturity of our lease liabilities as of December 31, 2019 (in millions of dollars):
Maturity of Lease Liabilities |  | Finance Leases |  | Operating Leases
2020 |  | $ | 1.6 |  |  | $ | 5.4 |
2021 |  | 1.4 |  |  | 4.6 |
2022 |  | 1.3 |  |  | 3.8 |
2023 |  | 1.2 |  |  | 3.5 |
2024 |  | 0.7 |  |  | 3.3 |
2025 and thereafter |  | 1.3 |  |  | 18.7 |
Total minimum lease payments |  | $ | 7.5 |  |  | $ | 39.3 |
Less: interest |  | (0.9 | ) |  | (10.2 | )
Present value |  | $ | 6.6 |  |  | $ | 29.1 |
Schedule of future minimum rental payments | Minimum rental commitments at December 31, 2018 were as follows (in millions of dollars):
Year Ended December 31, |  | Finance Leases |  | Operating Leases
2019 |  | $ | 1.7 |  |  | $ | 6.1 |
2020 |  | 1.4 |  |  | 3.7 |
2021 |  | 1.2 |  |  | 2.8 |
2022 |  | 1.1 |  |  | 2.4 |
2023 |  | 1.0 |  |  | 2.2 |
2024 and thereafter |  | 1.8 |  |  | 20.8 |
Total minimum lease payments |  | $ | 8.2 |  |  | $ | 38.0 |
Less: interest |  | (1.2 | ) |  |
Present value 1 |  | $ | 7.0 |  |  |
_________________________ 1. Of the $7.0 million in finance lease obligations as of December 31, 2018, $1.4 million was included in Other accrued liabilities and $5.6 million was included in Long-term liabilities. Assets recorded under finance leases and the accumulated amortization thereon were $8.3 million and $1.3 million, respectively, as of December 31, 2018.

X
- Definition [Table Text Block] for Schedule of Lease Assets and Liabilities [Table] + References No definition available. + Details
Name: | kalu_ScheduleofLeaseAssetsandLiabilitiesTableTextBlock
Namespace Prefix: | kalu_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 + Details
Name: | us-gaap_LeaseCostTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_LeasesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980 + Details
Name: | us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure for lessee's operating leases. Includes, but is not limited to, description of lessee's operating lease, existence and terms of renewal or purchase options and escalation clauses, restrictions imposed by lease, such as those concerning dividends, additional debt, and further leasing, rent holidays, rent concessions, or leasehold improvement incentives and unusual provisions or conditions. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 55 -Paragraph 40 -Subparagraph (Note 1,3) -URI http://asc.fasb.org/extlink&oid=82846649&loc=d3e38371-112697 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41499-112717 Reference 3: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=118943654&loc=d3e12069-110248 Reference 4: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41502-112717 Reference 5: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84164451&loc=d3e36991-112694 + Details
Name: | us-gaap_OperatingLeasesOfLesseeDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41502-112717 + Details
Name: | us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration