Name:	acxm_SharebasedCompensationArrangementBySharebasedPaymentAwardAcceleratedOriginalGrantDateFairValueCompensationCost
Namespace Prefix:	acxm_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

Share-based Compensation Arrangement by Share-based Payment Award, Conversion Percentage

No definition available.

Name:	acxm_SharebasedCompensationArrangementBySharebasedPaymentAwardConversionPercentage
Namespace Prefix:	acxm_
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Additional share-based compensation cost recognized as a result of an occurrence of an event that accelerates its recognition.

No definition available.

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAcceleratedCompensationCost
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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Period Type:	duration

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
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An excess of the fair value of the modified award over the fair value of the award immediately before the modification.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(2)(iii)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationIncrementalCompensationCost
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Data Type:	xbrli:monetaryItemType
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Number of shares for which recognition of compensation cost was accelerated.

No definition available.