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		6 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2023	Jul. 31, 2022
Numerator:
Net income	$ 181,974	$ 45,750	$ 197,418	$ 159,408
Net income attributable to common stockholders	$ 181,974	$ 45,746	$ 197,418	$ 159,389
Denominator:
Weighted-average shares used in computing net income per share attributable to common stockholders, basic (in shares)	299,093,452	298,553,379	297,281,846	298,865,676
Weighted-average shares used in computing net income per share attributable to common stockholders, diluted (in shares)	305,932,596	307,160,840	305,054,771	306,902,964
Net income per share attributable to common stockholders, basic (in dollars per share)	$ 0.61	$ 0.15	$ 0.66	$ 0.53
Net income per share attributable to common stockholders, diluted (in dollars per share)	$ 0.59	$ 0.15	$ 0.65	$ 0.52
Class A
Numerator:
Net income	$ 153,573	$ 38,594	$ 166,420	$ 134,075
Less: undistributed earnings attributable to participating securities	0	0	0	0
Net income attributable to common stockholders	153,573	38,594	166,420	134,075
Reallocation of net income attributable to common stockholders	(1,468)	(518)	(1,662)	(1,959)
Net income attributable to common stockholders, diluted	$ 152,105	$ 38,076	$ 164,758	$ 132,116
Denominator:
Weighted-average shares used in computing net income per share attributable to common stockholders, basic (in shares)	252,413,018	251,878,556	250,603,102	251,400,283
Weighted-average shares used in computing net income per share attributable to common stockholders, diluted (in shares)	255,717,521	255,661,184	254,587,009	254,389,537
Net income per share attributable to common stockholders, basic (in dollars per share)	$ 0.61	$ 0.15	$ 0.66	$ 0.53
Net income per share attributable to common stockholders, diluted (in dollars per share)	$ 0.59	$ 0.15	$ 0.65	$ 0.52
Class B
Numerator:
Net income	$ 28,401	$ 7,156	$ 30,998	$ 25,333
Less: undistributed earnings attributable to participating securities	0	(4)	0	(19)
Net income attributable to common stockholders	28,401	7,152	30,998	25,314
Reallocation of net income attributable to common stockholders	1,468	518	1,662	1,959
Net income attributable to common stockholders, diluted	$ 29,869	$ 7,670	$ 32,660	$ 27,273
Denominator:
Weighted-average shares used in computing net income per share attributable to common stockholders, basic (in shares)	46,680,434	46,674,823	46,678,744	47,465,393
Weighted-average shares used in computing net income per share attributable to common stockholders, diluted (in shares)	50,215,075	51,499,656	50,467,762	52,513,427
Net income per share attributable to common stockholders, basic (in dollars per share)	$ 0.61	$ 0.15	$ 0.66	$ 0.53
Net income per share attributable to common stockholders, diluted (in dollars per share)	$ 0.59	$ 0.15	$ 0.65	$ 0.52