Document and Entity Information - shares	9 Months Ended
	Dec. 31, 2015	Feb. 01, 2016
Document and Entity Information
Entity Registrant Name	ACXIOM CORP
Entity Central Index Key	0000733269
Document Type	10-Q
Document Period End Date	Dec. 31, 2015
Amendment Flag	false
Current Fiscal Year End Date	--03-31
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		77,724,143
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q3