Revenues by Product - Summary of Total Revenues (Detail) - USD ($) $ in Thousands		3 Months Ended
		Apr. 30, 2019	Apr. 30, 2018
Disaggregation Of Revenue [Line Items]
Total revenues		$ 244,752	$ 195,547
Subscription services, Veeva Commercial Cloud [Member]
Disaggregation Of Revenue [Line Items]
Total revenues		105,796	93,109
Subscription services, Veeva Vault [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	[1]	92,319	62,894
Subscription services [Member]
Disaggregation Of Revenue [Line Items]
Total revenues		198,115	156,003
Professional services, Veeva Commercial Cloud [Member]
Disaggregation Of Revenue [Line Items]
Total revenues		17,221	16,161
Professional services, Veeva Vault [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	[1]	29,416	23,383
Professional services [Member]
Disaggregation Of Revenue [Line Items]
Total revenues		$ 46,637	$ 39,544

[1] Veeva Vault revenues includes revenue from legacy Zinc Ahead products.