v3.26.1
Revenue - Schedule of total revenue by geographic areas (Details) - USD ($)
$ in Thousands
 3 Months Ended
Apr. 30, 2026
Apr. 30, 2025
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]    
Total revenue $ 687,616 $ 549,014
Atlas-related    
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]    
Total revenue 512,466 395,893
MongoDB Enterprise Advanced and other    
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]    
Total revenue 153,672 135,562
Services    
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]    
Total revenue 21,478 17,559
Americas    
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]    
Total revenue 412,337 332,867
EMEA    
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]    
Total revenue 194,678 150,766
Asia Pacific    
Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Line Items]    
Total revenue $ 80,601 $ 65,381