Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Jan. 31, 2022	Jan. 31, 2021
Deferred tax assets:
Net operating losses carryforwards	$ 1,522,969	$ 479,564
Tax credit carryforwards	215,934	72,138
Stock-based compensation	88,743	49,548
Operating lease liabilities	48,682	50,834
Other	79,141	23,123
Total deferred tax assets	1,955,469	675,207
Less: valuation allowance	(1,858,730)	(599,603)
Net deferred tax assets	96,739	75,604
Deferred tax liabilities:
Deferred commissions	(28,368)	(21,506)
Intangible assets	(15,692)	(3,755)
Net unrealized gains on strategic investments	6,399	0
Operating lease right-of-use assets	(48,307)	(50,343)
Total deferred tax liabilities	(98,766)	(75,604)
Net deferred tax assets (liabilities)	$ (2,027)	$ 0