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	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Earnings Per Share, Basic [Abstract]
Net income	$ 637,462	$ 103,711	$ 1,375,639
Less: undistributed earnings attributable to participating securities	0	(7)	(582)
Net Income (Loss) Available to Common Stockholders, Basic	$ 637,462	$ 103,704	$ 1,375,057
Earnings Per Share, Diluted [Abstract]
Weighted-average shares used in computing net income (loss) per share attributable to common stockholders, basic (in shares)	300,748,162	296,560,501	296,334,894
Weighted-average shares used in computing net income (loss) per share attributable to common stockholders, diluted (in shares)	308,519,897	304,231,350	305,826,505
Net income (loss) per share attributable to common stockholders, basic (in dollars per share)	$ 2.12	$ 0.35	$ 4.64
Net income (loss) per share attributable to common stockholders, diluted (in dollars per share)	$ 2.07	$ 0.34	$ 4.50
Class A
Earnings Per Share, Basic [Abstract]
Net income	$ 538,554	$ 87,246	$ 1,105,368
Less: undistributed earnings attributable to participating securities	0	0	0
Net Income (Loss) Available to Common Stockholders, Basic	538,554	87,246	1,105,368
Reallocation of net income attributable to common stockholders	(4,653)	(1,205)	(23,891)
Net income attributable to common stockholders, diluted	$ 533,901	$ 86,041	$ 1,081,477
Earnings Per Share, Diluted [Abstract]
Weighted-average shares used in computing net income (loss) per share attributable to common stockholders, basic (in shares)	254,084,540	249,494,904	238,214,936
Weighted-average shares used in computing net income (loss) per share attributable to common stockholders, diluted (in shares)	258,398,674	252,413,234	240,531,470
Net income (loss) per share attributable to common stockholders, basic (in dollars per share)	$ 2.12	$ 0.35	$ 4.64
Net income (loss) per share attributable to common stockholders, diluted (in dollars per share)	$ 2.07	$ 0.34	$ 4.50
Class B
Earnings Per Share, Basic [Abstract]
Net income	$ 98,908	$ 16,465	$ 270,271
Less: undistributed earnings attributable to participating securities	0	(7)	(582)
Net Income (Loss) Available to Common Stockholders, Basic	98,908	16,458	269,689
Reallocation of net income attributable to common stockholders	4,653	1,205	23,891
Net income attributable to common stockholders, diluted	$ 103,561	$ 17,663	$ 293,580
Earnings Per Share, Diluted [Abstract]
Weighted-average shares used in computing net income (loss) per share attributable to common stockholders, basic (in shares)	46,663,622	47,065,597	58,119,958
Weighted-average shares used in computing net income (loss) per share attributable to common stockholders, diluted (in shares)	50,121,223	51,818,116	65,295,035
Net income (loss) per share attributable to common stockholders, basic (in dollars per share)	$ 2.12	$ 0.35	$ 4.64
Net income (loss) per share attributable to common stockholders, diluted (in dollars per share)	$ 2.07	$ 0.34	$ 4.50