Income Taxes - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Income Tax Examination [Line Items]
Increase in valuation allowance	$ 168,900
Deferred tax liabilities, net	10,369	$ 849
Research tax credits	14,031	2,359
Unrecognized tax benefits, income tax penalties expense	254,900
Unrecognized tax benefits	396,824	7,460	$ 5,557
Unrecognized tax benefits that would effect tax rate	207,800	500
Unrecognized tax benefits, current	207,300
Unrecognized tax benefit reasonably possible to be realized	389,000
Interest and penalties recognized	52,100	$ 200	$ 100
Federal
Income Tax Examination [Line Items]
Net operating loss carryforwards	285,600
Research tax credits	17,900
State
Income Tax Examination [Line Items]
Net operating loss carryforwards	336,700
Research tax credits	3,900
Foreign
Income Tax Examination [Line Items]
Net operating loss carryforwards	$ 31,700