v3.25.4
Stockholders' Equity - Additional Information (Details)
$ / shares in Units, $ in Millions
 1 Months Ended 12 Months Ended
Aug. 31, 2025
USD ($)
Sep. 30, 2024
USD ($)
shares
Aug. 31, 2024
USD ($)
Feb. 28, 2023
USD ($)
Dec. 31, 2025
USD ($)
class_of_stock
offering_period
vote
$ / shares
shares
Dec. 31, 2024
USD ($)
$ / shares
shares
Dec. 31, 2023
USD ($)
$ / shares
Class Of Stock [Line Items]              
Preferred stock, shares authorized (in shares)         10,000,000 10,000,000  
Preferred stock, par value (in dollars per share) | $ / shares         $ 0.00001 $ 0.00001  
Classes of common stock | class_of_stock         2    
Conversion, percent threshold         10.00%    
Common stock reserved for issuance (in shares)         94,881,000 98,140,000  
Intrinsic value of options exercised | $         $ 156.8 $ 153.1 $ 241.0
Weighted average grant date fair value per share of options granted | $ / shares         $ 0 $ 0 $ 0
Total grant-date fair value of stock options vested | $         $ 8.8 $ 44.8 $ 62.8
Shares early exercised and repurchase           8,173  
Liabilities for early exercise of unvested stock options and other liabilities | $         $ 0.0 $ 0.0  
Expected dividend yield         0.00%    
Unrecognized stock-based compensation expense | $         $ 392.8    
Unrecognized stock-based compensation expense, weighted-average period         1 year 6 months    
WarpStream Labs, Inc.              
Class Of Stock [Line Items]              
Period for retention bonus payment   3 years          
Restricted Stock Units (RSUs)              
Class Of Stock [Line Items]              
Total grant-date fair value of RSUs vested | $         $ 381.1 $ 348.5 $ 281.5
Unvested shares (in shares)         18,436,000 20,556,000  
Post-combination stock-based compensation expense | $   $ 7.9          
Restricted Stock Units (RSUs) | WarpStream Labs, Inc.              
Class Of Stock [Line Items]              
Unvested shares (in shares)         264,958 397,436  
Period for retention bonus payment   3 years          
Shares issued (in shares)   397,436          
Plan 2014 and 2021              
Class Of Stock [Line Items]              
Expiration period         10 years    
2021 Employee Stock Purchase Plan              
Class Of Stock [Line Items]              
Common stock reserved for issuance (in shares)         12,067,000 10,138,000  
Offering period         12 months    
Number of offering periods | offering_period         2    
Purchase period         6 months    
Incremental stock-based compensation expense | $ $ 0.0   $ 4.3 $ 0.0      
Expected dividend yield         0.00% 0.00% 0.00%
Minimum              
Class Of Stock [Line Items]              
Share based arrangement vesting period, years         2 years    
Minimum | Plan 2014 and 2021              
Class Of Stock [Line Items]              
Share based arrangement vesting period, years         2 years    
Maximum              
Class Of Stock [Line Items]              
Share based arrangement vesting period, years         4 years    
Maximum | Plan 2014 and 2021              
Class Of Stock [Line Items]              
Share based arrangement vesting period, years         4 years    
Class A Common Stock              
Class Of Stock [Line Items]              
Conversion of stock, shares conversion ratio         1    
Common stock, shares authorized (in shares)         1,000,000,000 1,000,000,000  
Common stock, voting rights, votes per share | vote         1    
Common stock, par value (in dollars per share) | $ / shares         $ 0.00001 $ 0.00001  
Class A Common Stock | 2021 Plan              
Class Of Stock [Line Items]              
Common stock reserved for issuance (in shares)         25,812,876    
Class A Common Stock | 2021 Employee Stock Purchase Plan              
Class Of Stock [Line Items]              
Common stock reserved for issuance (in shares)         5,162,575    
Purchase price of common stock expressed as a percentage of its fair value         85.00%    
Class B Common Stock              
Class Of Stock [Line Items]              
Common stock, shares authorized (in shares)         500,000,000 500,000,000  
Common stock, voting rights, votes per share | vote         10    
Common stock, par value (in dollars per share) | $ / shares         $ 0.00001 $ 0.00001