CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020
Income Statement [Abstract]
Revenue	$ 4,099,864	$ 2,651,368	$ 622,658
Cost of revenue	1,054,554	821,989	115,396
Gross profit	3,045,310	1,829,379	507,262
Operating expenses:
Research and development	362,990	164,080	67,079
Sales and marketing	1,135,959	684,904	340,646
General and administrative	482,770	320,547	86,841
Total operating expenses	1,981,719	1,169,531	494,566
Income from operations	1,063,591	659,848	12,696
Gains on strategic investments, net	43,761	2,538	0
Other (expense) income, net	(5,720)	15,648	13,666
Total	1,101,632	678,034	26,362
(Benefit from) provision for income taxes	(274,007)	5,718	1,057
Net income	1,375,639	672,316	25,305
Undistributed earnings attributable to participating securities	(582)	(789)	(3,555)
Net income attributable to common stockholders	$ 1,375,057	$ 671,527	$ 21,750
Net income per share attributable to common stockholders:
Basic (in dollars per share)	$ 4.64	$ 2.37	$ 0.09
Diluted (in dollars per share)	$ 4.50	$ 2.25	$ 0.09
Weighted-average shares used in computing net income per share attributable to common stockholders:
Basic (in shares)	296,334,894	283,853,654	233,641,336
Diluted (in shares)	305,826,505	298,127,669	254,298,014