v3.22.0.1
Summary of Significant Accounting Policies - Narrative (Details)
1 Months Ended 12 Months Ended
Jun. 14, 2019
shares
Jul. 31, 2019
USD ($)
Sep. 30, 2018
Jan. 31, 2022
USD ($)
Jan. 31, 2022
USD ($)
Jan. 31, 2022
USD ($)
Jan. 31, 2022
USD ($)
reportingUnit
Jan. 31, 2022
USD ($)
segment
Jan. 31, 2022
USD ($)
item
Jan. 31, 2021
USD ($)
Jan. 31, 2020
USD ($)
Dec. 31, 2021
USD ($)
Concentration Risk [Line Items]                        
Cash equivalents       $ 950,600,000 $ 950,600,000 $ 950,600,000 $ 950,600,000 $ 950,600,000 $ 950,600,000 $ 0    
Unrealized gain on strategic investments           2,400,000            
Unrealized gain on strategic investments, noncontrolling interests           2,400,000            
Allowance for doubtful accounts       $ 1,600,000 1,600,000 1,600,000 $ 1,600,000 1,600,000 1,600,000 1,200,000    
Impairment losses           0       0 $ 0  
Commission amortization period       4 years                
Professional service contract amortization period       6 months                
Advertising expense           50,500,000       27,900,000 8,000,000  
Vesting period       4 years                
Number of reporting units | reportingUnit             1          
Goodwill impairment loss           0       0 0  
Deferred financing costs, net       $ 4,600,000 4,600,000 4,600,000 $ 4,600,000 $ 4,600,000 $ 4,600,000 4,400,000    
Amortization of debt issuance costs           1,000,000       $ 800,000 $ 400,000  
Number of reportable segments               1 1      
Number of operating segments | segment               1        
Senior Notes                        
Concentration Risk [Line Items]                        
Unamortized issuance costs       2,300,000 2,300,000 2,300,000 2,300,000 $ 2,300,000 $ 2,300,000      
Reclassification to Stockholder's Equity                        
Concentration Risk [Line Items]                        
Deferred offering costs       $ 5,900,000 $ 5,900,000 $ 5,900,000 $ 5,900,000 $ 5,900,000 $ 5,900,000      
RSUs                        
Concentration Risk [Line Items]                        
Vesting period       4 years                
PSUs                        
Concentration Risk [Line Items]                        
Vesting period       4 years                
Employee Stock Purchase Plan                        
Concentration Risk [Line Items]                        
Vesting period       2 years                
Tranche One                        
Concentration Risk [Line Items]                        
Requisite service period       6 months                
Tranche One | RSUs                        
Concentration Risk [Line Items]                        
Vesting percentage     10.00%   25.00%              
Tranche Two                        
Concentration Risk [Line Items]                        
Requisite service period       12 months                
Tranche Two | RSUs                        
Concentration Risk [Line Items]                        
Vesting percentage     15.00%                  
Tranche Three                        
Concentration Risk [Line Items]                        
Requisite service period       18 months                
Tranche Three | RSUs                        
Concentration Risk [Line Items]                        
Vesting percentage     25.00%                  
Tranche Four                        
Concentration Risk [Line Items]                        
Requisite service period       24 months                
Tranche Four | RSUs                        
Concentration Risk [Line Items]                        
Vesting percentage     50.00%                  
Capitalized internal-use software and website development                        
Concentration Risk [Line Items]                        
Useful life       3 years                
Crowdstrike Falcon Fund Llc | Accel                        
Concentration Risk [Line Items]                        
Sharing percentage   50.00%                    
Common Class B                        
Concentration Risk [Line Items]                        
Shares issued upon conversion of warrants (in shares) | shares 336,386                      
Shares issued (in shares) | shares 322,278                      
Common Class B | IPO                        
Concentration Risk [Line Items]                        
Warrants issued (in shares) | shares 336,386                      
Warrants conversion ratio 1                      
Minimum                        
Concentration Risk [Line Items]                        
Useful life       1 year                
Subscription fees payable term       30 days                
Subscription term       1 year                
Maximum                        
Concentration Risk [Line Items]                        
Useful life       20 years                
Subscription fees payable term       60 days                
Subscription term       3 years                
Maximum | Crowdstrike Falcon Fund Llc | Accel                        
Concentration Risk [Line Items]                        
Amount agreed to commit   $ 10,000,000                   $ 50,000,000