v3.25.2
Cover Page - shares
 6 Months Ended
Jun. 30, 2025
Aug. 01, 2025
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2025  
Document Transition Report false  
Entity File Number 001-39051  
Entity Registrant Name Datadog, Inc.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 27-2825503  
Entity Address, Address Line One 620 8th Avenue,  
Entity Address, Address Line Two 45th Floor  
Entity Address, City or Town New York,  
Entity Address, State or Province NY  
Entity Address, Postal Zip Code 10018  
City Area Code 866  
Local Phone Number 329-4466  
Title of 12(b) Security Class A common stock, par value $0.00001 per share  
Trading Symbol DDOG  
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  
Amendment Flag false  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q2  
Entity Central Index Key 0001561550  
Current Fiscal Year End Date --12-31  
Class A Common Stock    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding (in shares)   323,270,704
Class B Common Stock    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding (in shares)   25,474,422