v3.19.3.a.u2
Document and Entity Information Document
Jan. 28, 2020
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Jan. 28, 2020
Entity File Number 000-22496
Entity Registrant Name SCHNITZER STEEL INDUSTRIES, INC.
Entity Incorporation State Country Code OR
Entity Tax Identification Number 93-0341923
Entity Address Address Line1 299 SW Clay Street
Entity Address, Address Line Two Suite 350
Entity Address City Or Town Portland
Entity Address State Or Province OR
Entity Address Postal Zip Code 97201
City Area Code 503
Local Phone Number 224-9900
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Entity Central Index Key 0000912603
Title of 12(b) Security Class A Common Stock, $1.00 par value
Trading Symbol SCHN
Security Exchange Name NASDAQ