CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended
		Apr. 30, 2022	Apr. 30, 2021
Revenues:
Total revenues		$ 505,102	$ 433,573
Cost of revenues:
Total cost of revenues	[1]	139,515	116,136
Gross profit		365,587	317,437
Operating expenses:
Research and development	[1]	113,475	83,226
Sales and marketing	[1]	76,115	64,610
General and administrative	[1]	48,325	41,155
Total operating expenses	[1]	237,915	188,991
Operating income		127,672	128,446
Other income, net		2,709	4,564
Income before income taxes		130,381	133,010
Provision for income taxes		30,266	17,443
Net income		$ 100,115	$ 115,567
Net income per share:
Basic (in usd per share)		$ 0.65	$ 0.76
Diluted (in usd per share)		$ 0.62	$ 0.71
Weighted-average shares used to compute net income per share:
Basic (in shares)		154,514	152,444
Diluted (in shares)		161,928	162,213
Other comprehensive income:
Net change in unrealized loss on available-for-sale investments		$ (10,999)	$ (1,086)
Net change in cumulative foreign currency translation loss		(1,254)	(2,213)
Comprehensive income		87,862	112,268
Subscription services
Revenues:
Total revenues		402,632	341,119
Cost of revenues:
Total cost of revenues	[1]	58,953	51,217
Professional services and other
Revenues:
Total revenues		102,470	92,454
Cost of revenues:
Total cost of revenues	[1]	$ 80,562	$ 64,919

[1] (1) Includes stock-based compensation as follows:Cost of revenues:Cost of subscription services$1,277 $906 Cost of professional services and other9,990 7,422 Research and development25,823 16,837 Sales and marketing16,893 11,555 General and administrative13,151 11,769 Total stock-based compensation$67,134 $48,489