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, 2023	Jan. 31, 2022	Jan. 31, 2021
Earnings Per Share, Basic [Abstract]
Net income	$ 103,711	$ 1,375,639	$ 672,316
Less: undistributed earnings attributable to participating securities	(7)	(582)	(789)
Net income attributable to common stockholders	$ 103,704	$ 1,375,057	$ 671,527
Earnings Per Share, Diluted [Abstract]
Weighted-average shares used in computing net income (loss) per share attributable to common stockholders, basic (in shares)	296,560,501	296,334,894	283,853,654
Weighted-average shares used in computing net income (loss) per share attributable to common stockholders, diluted (in shares)	304,231,350	305,826,505	298,127,669
Net income (loss) per share attributable to common stockholders, basic (in dollars per share)	$ 0.35	$ 4.64	$ 2.37
Net income (loss) per share attributable to common stockholders, diluted (in dollars per share)	$ 0.34	$ 4.50	$ 2.25
Class A
Earnings Per Share, Basic [Abstract]
Net income	$ 87,246	$ 1,105,368	$ 432,968
Less: undistributed earnings attributable to participating securities	0	0	0
Net income attributable to common stockholders	87,246	1,105,368	432,968
Reallocation of net income attributable to common stockholders	(1,205)	(23,891)	(14,321)
Net income attributable to common stockholders, diluted	$ 86,041	$ 1,081,477	$ 418,647
Earnings Per Share, Diluted [Abstract]
Weighted-average shares used in computing net income (loss) per share attributable to common stockholders, basic (in shares)	249,494,904	238,214,936	183,015,245
Weighted-average shares used in computing net income (loss) per share attributable to common stockholders, diluted (in shares)	252,413,234	240,531,470	185,860,412
Net income (loss) per share attributable to common stockholders, basic (in dollars per share)	$ 0.35	$ 4.64	$ 2.37
Net income (loss) per share attributable to common stockholders, diluted (in dollars per share)	$ 0.34	$ 4.50	$ 2.25
Class B
Earnings Per Share, Basic [Abstract]
Net income	$ 16,465	$ 270,271	$ 239,348
Less: undistributed earnings attributable to participating securities	(7)	(582)	(789)
Net income attributable to common stockholders	16,458	269,689	238,559
Reallocation of net income attributable to common stockholders	1,205	23,891	14,321
Net income attributable to common stockholders, diluted	$ 17,663	$ 293,580	$ 252,880
Earnings Per Share, Diluted [Abstract]
Weighted-average shares used in computing net income (loss) per share attributable to common stockholders, basic (in shares)	47,065,597	58,119,958	100,838,409
Weighted-average shares used in computing net income (loss) per share attributable to common stockholders, diluted (in shares)	51,818,116	65,295,035	112,267,257
Net income (loss) per share attributable to common stockholders, basic (in dollars per share)	$ 0.35	$ 4.64	$ 2.37
Net income (loss) per share attributable to common stockholders, diluted (in dollars per share)	$ 0.34	$ 4.50	$ 2.25