Basis of Presentation and Summary of Significant Accounting Policies - Narrative (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Jul. 31, 2025 USD ($)	Jul. 31, 2025 USD ($) financial_institution	Jun. 30, 2025 USD ($)	Jan. 31, 2025 USD ($)
Accounting Policies [Line Items]
Contract duration (in years)		3 years
Contract asset	$ 9,400	$ 9,400		$ 8,500
Contract assets, current	3,610	3,610		4,537
Contract asset, noncurrent	5,800	5,800		$ 4,000
Contract with customer, liability, revenue recognized	269,000	463,300
Revenue, remaining performance obligation, amount	2,022,600	$ 2,022,600
Number of financial institutions | financial_institution		3
Convertible Senior Notes Due 2030 | Convertible notes
Accounting Policies [Line Items]
Principal	$ 1,150,000	$ 1,150,000	$ 1,150,000
Interest rate			0.00%
Minimum
Accounting Policies [Line Items]
Contract duration (in years)		1 year
Payment terms (in days)		30 days
Maximum
Accounting Policies [Line Items]
Contract duration (in years)		5 years
Payment terms (in days)		60 days
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-08-01
Accounting Policies [Line Items]
Revenue, remaining performance obligation, percentage	52.00%	52.00%
Revenue, remaining performance obligation, expected timing of satisfaction, period	12 months	12 months