v3.26.1
Cover Page - shares
shares in Millions
 6 Months Ended
Jun. 30, 2026
Jul. 30, 2026
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2026  
Document Transition Report false  
Entity File Number 001-40819  
Entity Registrant Name Toast, Inc.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 45-4168768  
Entity Address, Address Line One 333 Summer Street  
Entity Address, City or Town Boston,  
Entity Address, State or Province MA  
Entity Address, Postal Zip Code 02210  
City Area Code 617  
Local Phone Number 297-1005  
Title of 12(b) Security Class A common stock, par value of $0.000001 per share  
Trading Symbol TOST  
Security Exchange Name NYSE  
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 Central Index Key 0001650164  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q2  
Common Class A    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   514
Common Class B    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   64