Stock-based Compensation - Restricted Stock Unit Activities (Detail) - Restricted Stock Unit [Member]	9 Months Ended
	Oct. 31, 2024 $ / shares shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares, Unvested, beginning balance | shares	2,432,640
Shares, Granted | shares	1,431,816
Shares, Vested | shares	(851,932)
Shares, Forfeited | shares	(151,000)
Shares, Unvested, ending balance | shares	2,861,524
Weighted-Average Grant-Date Fair Value, Unvested, beginning balance | $ / shares	$ 82.54
Weighted-Average Grant-Date Fair Value, Granted | $ / shares	62.12
Weighted-Average Grant-Date Fair Value, Vested | $ / shares	75.81
Weighted-Average Grant-Date Fair Value, Forfeited | $ / shares	118.07
Weighted-Average Grant-Date Fair Value, Unvested, ending balance | $ / shares	$ 72.45