v3.25.2
Document and Entity Information - shares
 6 Months Ended
Jun. 30, 2025
Aug. 04, 2025
Cover [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jun. 30, 2025  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q2  
Entity Registrant Name Sana Biotechnology, Inc.  
Entity Central Index Key 0001770121  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Current Fiscal Year End Date --12-31  
Entity Filer Category Accelerated Filer  
Entity Common Stock, Shares Outstanding   237,806,498
Entity Shell Company false  
Entity Small Business false  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity File Number 001-39941  
Entity Tax Identification Number 83-1381173  
Entity Address Address Line1 188 East Blaine Street  
Entity Address, Address Line Two Suite 400  
Entity Address City Or Town Seattle  
Entity Address State Or Province WA  
Entity Address Postal Zip Code 98102  
City Area Code 206  
Local Phone Number 701-7914  
Document Quarterly Report true  
Document Transition Report false  
Entity Incorporation State Country Code DE  
Title of 12(b) Security Common Stock, $0.0001 par value per share  
Trading Symbol SANA  
Security Exchange Name NASDAQ