v3.26.1
Stockholders' Equity - Narrative (Details)
shares in Millions
3 Months Ended
Apr. 30, 2026
USD ($)
plan
shares
Apr. 30, 2025
USD ($)
Mar. 31, 2026
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of stock-based compensation plans | plan 2    
Employee stock purchase plan, compensation expense $ 141,377,000 $ 145,596,000  
Stock repurchase program, additional authorized amount     $ 2,000,000,000.0
Stock repurchase program, authorized amount     $ 4,500,000,000
Stock repurchase program, remaining authorized amount 2,400,000,000    
RSUs      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unrecognized compensation cost, RSUs $ 1,000,000,000.0    
Unrecognized compensation cost, remaining weighted-average period for recognition 2 years 3 months 18 days    
RSUs | Market Based and Performance Based Vesting Conditions      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Grant date fair value of unvested RSU's $ 166,300,000    
Performance vesting percentage 100.00%    
ESPP      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Employee stock purchase plan, compensation expense $ 4,300,000 $ 3,500,000  
2018 Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Reserved for future issuance (in shares) | shares 56.2    
2018 ESPP      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Reserved for future issuance (in shares) | shares 14.5