Document and Entity Information
Document and Entity Information | Mar. 31, 2021 |
Cover [Abstract] | |
Document Type | 8-K/A |
Amendment Flag | true |
Amendment Description | The purpose of this Current Report on Form 8-K/A (the “Amended Report”) is to provide the historical financial statements and pro forma financial information required by Item 9.01 of Form 8-K that were previously omitted from the Initial Report as permitted by Item 9.01(a)(4). The pro forma financial information included in this Amended Report on Form 8-K/A has been presented for informational purposes, is based on various adjustments and assumptions and is not necessarily indicative of what the Company’s consolidated statement of operations or consolidated statement of financial condition actually would have been had the acquisition and other adjustments been completed as of the dates indicated or will be for any future periods. |
Document Period End Date | Mar. 31, 2021 |
Entity Registrant Name | KAISER ALUMINUM CORP |
Entity Central Index Key | 0000811596 |
Entity Emerging Growth Company | false |
Entity Incorporation State Country Code | DE |
Entity File Number | 1-09447 |
Entity Tax Identification Number | 94-3030279 |
Entity Address, Address Line One | 27422 Portola Parkway |
Entity Address, Address Line Two | Suite 200 |
Entity Address, City or Town | Foothill Ranch |
Entity Address, State or Province | CA |
Entity Address, Postal Zip Code | 92610-2831 |
City Area Code | (949) |
Local Phone Number | 614-1740 |
Written Communications | false |
Soliciting Material | false |
Pre Commencement Tender Offer | false |
Pre Commencement Issuer Tender Offer | false |
Security 12b Title | Common Stock, par value $0.01 per share |
Trading Symbol | KALU |
Security Exchange Name | NASDAQ |