v3.26.1
Stock-Based Compensation and Equity Grants - Narrative (Details) - shares
shares in Millions
9 Months Ended
Jun. 30, 2026
Jun. 30, 2025
2025 Plan    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of shares available for grant (in shares) 1.2  
Employee Stock Option | 2025 Plan    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Expiration term of share-based compensation plan 10 years  
Restricted Stock Units    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Expected term (years) 3 years 3 years