Balance Sheet Components - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Oct. 31, 2020	Jan. 31, 2020
Balance Sheet Components [Abstract]
Proceeds from employee equity transactions to be remitted to employees and tax authorities	$ 301,727	$ 49,287
Accrued compensation and benefits	110,981	36,732
Accrued expenses	102,241	17,475
Sales and other tax liabilities	19,001	3,774
Customer deposit liabilities	11,579	3,414
Operating lease liabilities, current	9,850	7,675
Other	10,141	4,335
Accrued expenses and other current liabilities	$ 565,520	$ 122,692