Stockholders' Equity and Equity Incentive Plans - Summary of Restricted Stock Units Activity Under Equity Incentive Plan (Details) - RSUs	12 Months Ended
	Jan. 31, 2026 $ / shares shares
Unvested RSUs
Beginning balance (in shares) | shares	23,870,513
Granted (in shares) | shares	10,695,967
Vested (in shares) | shares	(11,309,015)
Cancelled/forfeited (in shares) | shares	(3,151,160)
Ending balance (in shares) | shares	20,106,305
Weighted-Average Grant Date Fair Value Per Share
Beginning balance (in dollars per share) | $ / shares	$ 73.48
Granted (in dollars per share) | $ / shares	80.21
Vested (in dollars per share) | $ / shares	76.45
Cancelled/forfeited (in dollars per share) | $ / shares	72.94
Ending balance (in dollars per share) | $ / shares	$ 75.51