Net Income Per Share Attributable to Common Stockholders - Schedule of Computation of Basic and Diluted Net Income Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2023	Oct. 31, 2022
Numerator:
Net income	$ 141,212	$ 48,353	$ 338,630	$ 207,761
Net income attributable to common stockholders	$ 141,212	$ 48,353	$ 338,630	$ 207,744
Denominator:
Weighted-average shares used in computing net income per share attributable to common stockholders, basic (in shares)	302,493,182	295,537,026	299,037,999	297,765,848
Weighted-average shares used in computing net income per share attributable to common stockholders, diluted (in shares)	310,389,905	301,986,341	306,852,190	305,273,812
Net income per share attributable to common stockholders, basic (in dollars per share)	$ 0.47	$ 0.16	$ 1.13	$ 0.70
Net income per share attributable to common stockholders, diluted (in dollars per share)	$ 0.45	$ 0.16	$ 1.10	$ 0.68
Class A
Numerator:
Net income	$ 119,429	$ 40,726	$ 285,778	$ 174,835
Less: undistributed earnings attributable to participating securities	0	0	0	0
Net income attributable to common stockholders	119,429	40,726	285,778	174,835
Reallocation of net income attributable to common stockholders	(920)	(568)	(2,634)	(2,516)
Net income attributable to common stockholders, diluted	$ 118,509	$ 40,158	$ 283,144	$ 172,319
Denominator:
Weighted-average shares used in computing net income per share attributable to common stockholders, basic (in shares)	255,832,539	248,917,590	252,365,545	250,595,877
Weighted-average shares used in computing net income per share attributable to common stockholders, diluted (in shares)	260,488,614	250,803,759	256,573,508	253,217,436
Net income per share attributable to common stockholders, basic (in dollars per share)	$ 0.47	$ 0.16	$ 1.13	$ 0.70
Net income per share attributable to common stockholders, diluted (in dollars per share)	$ 0.45	$ 0.16	$ 1.10	$ 0.68
Class B
Numerator:
Net income	$ 21,783	$ 7,627	$ 52,852	$ 32,926
Less: undistributed earnings attributable to participating securities	0	0	0	(17)
Net income attributable to common stockholders	21,783	7,627	52,852	32,909
Reallocation of net income attributable to common stockholders	920	568	2,634	2,516
Net income attributable to common stockholders, diluted	$ 22,703	$ 8,195	$ 55,486	$ 35,425
Denominator:
Weighted-average shares used in computing net income per share attributable to common stockholders, basic (in shares)	46,660,643	46,619,436	46,672,454	47,169,971
Weighted-average shares used in computing net income per share attributable to common stockholders, diluted (in shares)	49,901,291	51,182,582	50,278,682	52,056,376
Net income per share attributable to common stockholders, basic (in dollars per share)	$ 0.47	$ 0.16	$ 1.13	$ 0.70
Net income per share attributable to common stockholders, diluted (in dollars per share)	$ 0.45	$ 0.16	$ 1.10	$ 0.68