Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition - Narrative (Details)

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Revenue Recognition - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jul. 31, 2024
Jul. 31, 2023
Jul. 31, 2024
Jul. 31, 2023
Jan. 31, 2024
Capitalized Contract Cost [Line Items]          
Amortization period (in years) 5 years   5 years    
Capitalized costs to obtain customer contracts $ 132.9   $ 132.9   $ 135.8
Amortization of costs to obtain customer contracts 11.8 $ 12.2 23.8 $ 24.2  
Revenue recognized previously included in deferred revenue balance 163.4 $ 148.3 282.6 $ 235.9  
Contract assets 3.7   3.7   4.3
Prepaid expenses and other current assets          
Capitalized Contract Cost [Line Items]          
Capitalized costs to obtain customer contracts 37.9   37.9   42.5
Other noncurrent assets          
Capitalized Contract Cost [Line Items]          
Capitalized costs to obtain customer contracts $ 95.0   $ 95.0   $ 93.4