Net Income Per Share - 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, 2025	Oct. 31, 2024	Oct. 31, 2025	Oct. 31, 2024
Denominator:
Weighted-average shares used in computing net income per share, basic (in shares)	298,660,092	307,529,696	301,807,298	308,443,893
Weighted-average shares used in computing net income per share, diluted (in shares)	305,024,411	314,191,269	308,702,227	314,514,244
Net income per share, basic (in dollars per share)	$ 2.05	$ 0.67	$ 4.06	$ 2.08
Net income per share, diluted (in dollars per share)	$ 2.01	$ 0.66	$ 3.97	$ 2.04
Class A
Numerator:
Net income, basic	$ 547,285	$ 176,222	$ 1,077,946	$ 544,814
Reallocation of net income	(1,824)	(1,076)	(3,551)	(3,746)
Net income, diluted	$ 545,461	$ 175,146	$ 1,074,395	$ 541,068
Denominator:
Weighted-average shares used in computing net income per share, basic (in shares)	266,698,435	261,741,448	265,345,610	261,599,394
Weighted-average shares used in computing net income per share, diluted (in shares)	271,473,538	265,777,344	270,513,743	264,913,871
Net income per share, basic (in dollars per share)	$ 2.05	$ 0.67	$ 4.06	$ 2.08
Net income per share, diluted (in dollars per share)	$ 2.01	$ 0.66	$ 3.97	$ 2.04
Class B
Numerator:
Net income, basic	$ 65,588	$ 30,828	$ 148,122	$ 97,559
Reallocation of net income	1,824	1,076	3,551	3,746
Net income, diluted	$ 67,412	$ 31,904	$ 151,673	$ 101,305
Denominator:
Weighted-average shares used in computing net income per share, basic (in shares)	31,961,657	45,788,248	36,461,688	46,844,499
Weighted-average shares used in computing net income per share, diluted (in shares)	33,550,873	48,413,925	38,188,484	49,600,373
Net income per share, basic (in dollars per share)	$ 2.05	$ 0.67	$ 4.06	$ 2.08
Net income per share, diluted (in dollars per share)	$ 2.01	$ 0.66	$ 3.97	$ 2.04