v3.26.1
Fair Value of Financial Instruments - Narrative (Details) - USD ($)
Jul. 31, 2026
Jan. 31, 2026
Debt Securities, Available-for-Sale [Line Items]    
Short-term investments accumulated impairment loss $ 0 $ 0
Level 2    
Debt Securities, Available-for-Sale [Line Items]    
Fair value of convertible notes $ 1,140,000,000