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INCOME TAX: (Details)	3 Months Ended
INCOME TAX: (Details)	Jun. 30, 2013
INCOME TAX
Anticipated effective tax rate for fiscal 2014 (as a percent)	38.00%

X

- Definition

Tax rate for fiscal 2014.

+ References

No definition available.

+ Details

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

X

- Details

Name:	us-gaap_IncomeTaxDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration