Information about Geographic Areas - Revenues by Geographic Area (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020
Revenues by geography
Total revenues	$ 455,594	$ 353,683	$ 889,167	$ 690,789
North America
Revenues by geography
Total revenues	259,125	200,334	505,425	395,991
Europe
Revenues by geography
Total revenues	127,549	98,395	248,853	187,817
Asia Pacific
Revenues by geography
Total revenues	55,850	44,569	109,482	86,861
Middle East, Africa, and Latin America
Revenues by geography
Total revenues	$ 13,070	$ 10,385	$ 25,407	$ 20,120