Income Taxes (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2025 USD ($) negotiation	Oct. 31, 2024 USD ($)	Oct. 31, 2025 USD ($) negotiation	Oct. 31, 2024 USD ($)
Income Tax Examination [Line Items]
Benefit from income taxes	$ (174,247)	$ (14,844)	$ (169,677)	$ (7,236)
Unrecognized tax benefits which would impact the effective tax rate if recognized	9,100		9,100
Liability pertaining to uncertain tax positions	$ 5,400		$ 5,400
Number of bilateral transfer pricing negotiations | negotiation	2		2
Anticipated amount of QDMTT			$ 1,000
United States | Bilateral Transfer Pricing Negotiations
Income Tax Examination [Line Items]
Increase (decrease) in valuation allowance			(3,100)
Increase (decrease) in DTA			(3,100)
India
Income Tax Examination [Line Items]
Corporate income tax assessment appealed			2,100
Romania | Bilateral Transfer Pricing Negotiations
Income Tax Examination [Line Items]
Increase (decrease) in valuation allowance			5,500
Increase (decrease) in DTA			5,500
United States
Income Tax Examination [Line Items]
Increase (decrease) in valuation allowance	$ (175,100)		(175,100)
New York
Income Tax Examination [Line Items]
Increase (decrease) in valuation allowance	$ (9,300)		$ (9,300)