CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Income Statement [Abstract]
Revenue	$ 4,527,224	$ 4,392,960	$ 4,099,864
Cost of revenue	1,077,801	1,100,451	1,054,554
Gross profit	3,449,423	3,292,509	3,045,310
Operating expenses:
Research and development	803,187	774,059	362,990
Sales and marketing	1,541,307	1,696,590	1,135,959
General and administrative	579,650	576,431	482,770
Total operating expenses	2,924,144	3,047,080	1,981,719
Income from operations	525,279	245,429	1,063,591
Gains (losses) on strategic investments, net	109,770	(37,571)	43,761
Other income (expense), net	197,263	41,418	(5,720)
Income before provision for (benefit from) income taxes	832,312	249,276	1,101,632
Provision for (benefit from) income taxes	194,850	145,565	(274,007)
Net income	637,462	103,711	1,375,639
Undistributed earnings attributable to participating securities	0	(7)	(582)
Net income attributable to common stockholders	$ 637,462	$ 103,704	$ 1,375,057
Net income per share attributable to common stockholders:
Basic (in dollars per share)	$ 2.12	$ 0.35	$ 4.64
Diluted (in dollars per share)	$ 2.07	$ 0.34	$ 4.50
Weighted-average shares used in computing net income per share attributable to common stockholders:
Basic (in shares)	300,748,162	296,560,501	296,334,894
Diluted (in shares)	308,519,897	304,231,350	305,826,505