v3.23.2
Cover Page - shares
 6 Months Ended
Jun. 30, 2023
Jul. 28, 2023
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2023  
Document Transition Report false  
Entity File Number 001-36014  
Entity Registrant Name AGIOS PHARMACEUTICALS, INC.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 26-0662915  
Entity Address, Address Line One 88 Sidney Street  
Entity Address, City or Town Cambridge  
Entity Address, State or Province MA  
Entity Address, Postal Zip Code 02139  
City Area Code 617  
Local Phone Number 649-8600  
Title of 12(b) Security Common Stock, Par Value $0.001 per share  
Trading Symbol AGIO  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   55,739,306
Document Fiscal Year Focus 2023  
Document Fiscal Period Focus Q2  
Amendment Flag false  
Entity Central Index Key 0001439222  
Current Fiscal Year End Date --12-31