SUBSEQUENT EVENT (Details) (Disposal of subsidiary, MENA subsidiary, USD $) In Millions	1 Months Ended
Jul. 31, 2011
Disposal of subsidiary \| MENA subsidiary
Subsequent event
Cash payment to acquirer and release of any claims	$ 1.0
Expected loss on disposal of discontinued operations	$ 3.3

Name:

acxm_DiscontinuedOperationExpectedLossFromDisposalOfDiscontinuedOperation

Namespace Prefix:

acxm

Data Type:

xbrli:monetaryItemType

Balance Type:

debit

Period Type:

duration