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Revenue - Additional Information (Details) - USD ($)
 3 Months Ended 9 Months Ended
Oct. 31, 2022
Oct. 31, 2021
Oct. 31, 2022
Oct. 31, 2021
Jan. 31, 2022
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]          
Deferred revenue $ 398,200,000   $ 398,200,000   $ 375,200,000
Percent of revenue recognized from deferred revenue     30.00% 30.00%  
Remaining performance obligation, percentage 64.00%   64.00%    
Unbilled contracts receivable $ 8,900,000   $ 8,900,000   6,100,000
Deferred commissions 233,200,000   233,200,000   $ 203,300,000
Amortization of deferred commissions 20,500,000 $ 13,300,000 57,000,000 $ 33,500,000  
Impairment loss 0 $ 0 0 $ 0  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-11-01          
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]          
Remaining performance obligation $ 414,300,000   $ 414,300,000    
Expected timing of satisfaction of remaining performance obligation 12 months   12 months