v3.20.4
Summary of Significant Accounting Policies (Details)
1 Months Ended 12 Months Ended
Jun. 14, 2019
USD ($)
shares
Jul. 31, 2019
USD ($)
Sep. 30, 2018
tranche
installment
Jan. 31, 2021
USD ($)
installment
segment
reportingUnit
Jan. 31, 2020
USD ($)
Jan. 31, 2019
USD ($)
Concentration Risk [Line Items]            
Capital contributions       $ 1,500,000 $ 1,000,000 $ 0
Allowance for doubtful accounts       1,200,000 1,100,000  
Capitalized software implementation costs       $ 300,000    
Commission amortization period       4 years    
Professional service contract amortization period       6 months    
Capitalization of contract acquisition costs       $ 150,975,000 86,594,000  
Contract acquisition cost amortization expense       66,400,000 35,500,000 28,600,000
Impairment losses       0 0 0
Advertising expense       $ 27,900,000 8,000,000.0 3,100,000
Vesting period       4 years    
Number of reporting units | reportingUnit       1    
Goodwill impairment loss       $ 0 0 0
Deferred financing costs, net       4,400,000 1,200,000  
Amortization of debt issuance costs       800,000 400,000 100,000
Provision for income taxes       $ 4,760,000 1,997,000 1,367,000
Number of reportable segments | segment       1    
Number of operating segments | segment       1    
Operating lease right-of-use assets       $ 36,484,000 0  
Present value of operating lease liabilities       40,963,000    
Cumulative Effect, Period of Adoption, Adjustment            
Concentration Risk [Line Items]            
Operating lease right-of-use assets         37,400,000  
Present value of operating lease liabilities         37,400,000  
Senior Notes            
Concentration Risk [Line Items]            
Unamortized issuance costs       2,600,000    
Reclassification to Stockholder's Equity            
Concentration Risk [Line Items]            
Deferred offering costs       $ 5,900,000    
RSUs            
Concentration Risk [Line Items]            
Vesting period       4 years    
Number of vesting schedules     3 3    
Performance Based RSUs            
Concentration Risk [Line Items]            
Deferred compensation expense $ 17,300,000          
PSUs            
Concentration Risk [Line Items]            
Vesting period       4 years    
Restatement Adjustment            
Concentration Risk [Line Items]            
Provision for income taxes       $ 0 $ 0 $ 0
Tranche One | RSUs            
Concentration Risk [Line Items]            
Vesting percentage     25.00%      
Number of quarterly installments | installment     12 12    
Tranche Two | RSUs            
Concentration Risk [Line Items]            
Number of quarterly installments | installment     16 16    
Tranche Three | RSUs            
Concentration Risk [Line Items]            
Number of quarterly installments | installment     8 8    
Capitalized internal-use software and website development            
Concentration Risk [Line Items]            
Useful life       3 years    
Crowdstrike Falcon Fund Llc            
Concentration Risk [Line Items]            
Sharing percentage   50.00%        
Duration of fund   10 years        
Additional extendable duration of fund   3 years        
Capital contributions       $ 1,300,000    
Crowdstrike Falcon Fund Llc | Accel            
Concentration Risk [Line Items]            
Sharing percentage   50.00%        
Capital contributions       $ 1,300,000    
Class B Common Stock            
Concentration Risk [Line Items]            
Shares issued upon conversion of warrants (in shares) | shares 336,386          
Shares issued (in shares) | shares 322,278          
Class B Common Stock | 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    
Minimum | Accel            
Concentration Risk [Line Items]            
Percentage Of capital stock held   5.00%        
Maximum            
Concentration Risk [Line Items]            
Useful life       5 years    
Subscription fees payable term       60 days    
Subscription term       3 years    
Maximum | Crowdstrike Falcon Fund Llc            
Concentration Risk [Line Items]            
Amount agreed to commit   $ 10,000,000.0        
Maximum | Crowdstrike Falcon Fund Llc | Accel            
Concentration Risk [Line Items]            
Amount agreed to commit   $ 10,000,000.0