INCOME TAX (Details)	6 Months Ended
Sep. 30, 2012
INCOME TAX
Anticipated effective tax rate for fiscal 2013 (as a percent)	39.00%

Represents the anticipated effective tax rate for fiscal 2013.

No definition available.

Name:	acxm_EffectiveIncomeTaxRateAnticipated
Namespace Prefix:	acxm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration