v3.25.2
Cover
Aug. 06, 2025
Cover [Abstract]  
Document Type 8-K
Document Period End Date Aug. 06, 2025
Entity Registrant Name MAGNITE, INC.
Entity Incorporation, State or Country Code DE
Entity File Number 001-36384
Entity Tax Identification Number 20-8881738
Entity Address, Address Line One 1250 Broadway,
Entity Address, Address Line One 15th Floor
Entity Address, City or Town New York,
Entity Address, State or Province NY
Entity Address, Postal Zip Code 10001
City Area Code 212
Local Phone Number 243-2769
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common stock, par value $0.00001 per share
Trading Symbol MGNI
Security Exchange Name NASDAQ
Entity Emerging Growth Company false
Entity Central Index Key 0001595974
Amendment Flag false