Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Jan. 31, 2022	Jan. 31, 2021
Deferred tax assets:
Net operating loss carryforwards	$ 636,011	$ 416,887
Deferred revenue	64,765	36,467
Finance and operating lease liabilities	23,500	23,184
Other reserves	23,460	18,020
Gross deferred tax assets	747,736	494,558
Valuation allowance	(677,283)	(374,790)
Total deferred tax assets, net of valuation allowance	70,453	119,768
Deferred tax liabilities:
Finance and operating lease right-of-use assets	(16,765)	(15,907)
Convertible senior notes	0	(68,877)
Deferred commission	(43,063)	(25,605)
Other liabilities and accruals	(8,767)	(9,155)
Total deferred tax liabilities	(68,595)	(119,544)
Net deferred tax assets	$ 1,858	$ 224