Document and Entity Information
Jun. 03, 2021
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Jun. 03, 2021
Entity Registrant Name ARCUS BIOSCIENCES, INC.
Entity Central Index Key 0001724521
Entity Incorporation, State or Country Code DE
Entity Emerging Growth Company false
Entity File Number 001-38419
Entity Tax Identification Number 47-3898435
Entity Address, Address Line One 3928 Point Eden Way
Entity Address, City or Town Hayward
Entity Address, State or Province CA
Entity Address, Postal Zip Code 94545
City Area Code 510
Local Phone Number 694-6200
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 $0.0001 Per Share
Trading Symbol RCUS
Security Exchange Name NYSE