Debt - Capped Calls (Details) $ / shares in Units, $ in Thousands, shares in Millions	3 Months Ended	6 Months Ended
	Jul. 31, 2025 USD ($) $ / shares shares	Jul. 31, 2025 USD ($) $ / shares shares
Line of Credit Facility [Line Items]
Purchase of capped calls related to convertible senior notes | $	$ 88,550	$ 88,550
Capped Calls | Convertible notes | Class A
Line of Credit Facility [Line Items]
Initial strike price (in dollars per share) | $ / shares	$ 124.76	$ 124.76
Anti-dilution adjustments (in shares) | shares	9.2	9.2
Initial cap price (in dollars per share) | $ / shares	$ 175.10	$ 175.10
Purchase of capped calls related to convertible senior notes | $	$ 88,600