v3.25.2
Cover
Jun. 26, 2025
Cover [Abstract]  
Document Type 8-K
Document Period End Date Jun. 26, 2025
Entity Registrant Name Autolus Therapeutics plc
Entity Incorporation, State or Country Code X0
Entity File Number 001-38547
Entity Address, Address Line One The Mediaworks
Entity Address, Address Line Two 191 Wood Lane
Entity Address, City or Town London
Entity Address, Postal Zip Code W12 7FP
Entity Address, Country GB
City Area Code (44) 20
Local Phone Number 3829 6230
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Central Index Key 0001730463
Amendment Flag false
Common Class A  
Cover [Abstract]  
Title of 12(b) Security Ordinary shares, nominal value $0.000042 per share*
Trading Symbol *
Security Exchange Name NASDAQ
Entity Listings [Line Items]  
Title of 12(b) Security Ordinary shares, nominal value $0.000042 per share*
Trading Symbol *
Security Exchange Name NASDAQ
8880 American Depositary Receipts  
Cover [Abstract]  
Title of 12(b) Security American Depositary Shares, each representing one ordinary share, nominal value $0.000042 per share
Trading Symbol AUTL
Security Exchange Name NASDAQ
Entity Listings [Line Items]  
Title of 12(b) Security American Depositary Shares, each representing one ordinary share, nominal value $0.000042 per share
Trading Symbol AUTL
Security Exchange Name NASDAQ