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Revenue - Additional Information (Details) - USD ($)
 3 Months Ended 9 Months Ended
Oct. 31, 2023
Oct. 31, 2022
Oct. 31, 2023
Oct. 31, 2022
Jan. 31, 2023
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]          
Deferred revenue $ 320,800,000   $ 320,800,000   $ 460,300,000
Percent of revenue recognized from deferred revenue     31.00% 30.00%  
Remaining performance obligation, percentage 53.00%   53.00%    
Unbilled contracts receivable $ 21,700,000   $ 21,700,000   9,700,000
Deferred commissions 269,600,000   269,600,000   $ 252,400,000
Amortization of deferred commissions 25,300,000 $ 20,700,000 72,800,000 $ 57,300,000  
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 $ 514,100,000   $ 514,100,000    
Expected timing of satisfaction of remaining performance obligation 12 months   12 months