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Document and Entity Information
Feb. 28, 2023
Cover [Abstract]  
Amendment Flag false
Entity Central Index Key 0001745999
Document Type 8-K
Document Period End Date Feb. 28, 2023
Entity Registrant Name BEAM THERAPEUTICS INC.
Entity Incorporation, State or Country Code DE
Entity File Number 001-39208
Entity Tax Identification Number 81-5238376
Entity Address, Address Line One 238 Main Street
Entity Address, City or Town Cambridge
Entity Address, State or Province MA
Entity Address, Postal Zip Code 02142
City Area Code (857)
Local Phone Number 327-8775
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 $0.01 per share
Trading Symbol BEAM
Security Exchange Name NASDAQ
Entity Emerging Growth Company false