v3.19.3
Cover Page Cover Page
Oct. 30, 2019
Cover Page [Abstract]  
Title of 12(b) Security Common Stock, par value $0.01 per share
Entity Central Index Key 0000811596
Amendment Flag false
Document Type 8-K
Document Period End Date Oct. 30, 2019
Entity Registrant Name KAISER ALUMINUM CORPORATION
City Area Code 949
Local Phone Number 614-1740
Entity Incorporation, State or 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
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Trading Symbol KALU
Security Exchange Name NASDAQ