Document and Entity Information - shares	9 Months Ended
	Jan. 31, 2016	Mar. 04, 2016
Document And Entity Information [Abstract]
Entity Registrant Name	Bazaarvoice Inc
Entity Central Index Key	0001330421
Current Fiscal Year End Date	--04-30
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	Jan. 31, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q3
Trading Symbol	BV
Amendment Flag	false
Entity Common Stock, Shares Outstanding		81,473,833