Purchase accounting adjustments needed to revise the carrying amount of goodwill to fair value.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The increase (decrease) to the recorded value of goodwill for foreign currency translation adjustments.

+ Details

Name:	acxm_GoodwillTranslationAdjustments
Namespace Prefix:	acxm
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the number of components of the operating segments of the entity included in impairment testing.

+ Details

Name:	acxm_NumberOfComponentsTestedForImpairment
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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represent the percentage of passing margin component.

+ Details

Name:	acxm_PercentageOfPassingMarginComponent
Namespace Prefix:	acxm
Data Type:	us-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The number of reportable segments of the entity.

+ Details

Name:	acxm_ReportingSegmentsNumber
Namespace Prefix:	acxm
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_AssetImpairmentChargesAbstract
Namespace Prefix:	us-gaap
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Carrying amount as of the balance sheet date, which is the cumulative amount paid, adjusted for any amortization recognized prior to adoption of FAS 142 and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 43

+ Details

Name:	us-gaap_Goodwill
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_GoodwillImpairedAbstract
Namespace Prefix:	us-gaap
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 45
-Subparagraph e(2)

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 43

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 47
-Subparagraph b

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 20

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ Details

Name:	us-gaap_GoodwillRollForward
Namespace Prefix:	us-gaap
Data Type:	xbrli:stringItemType
Balance Type:	na
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GOODWILL (Details) (USD $)	3 Months Ended					3 Months Ended
GOODWILL (Details) (USD $)	Jun. 30, 2011	Jun. 30, 2011 Information services	Apr. 02, 2011 US Information Services	Mar. 31, 2011 US Information Services	Apr. 02, 2011 International Information Services	Jun. 30, 2011 Information products	Apr. 02, 2011 US Information Products	Mar. 31, 2011 US Information Products	Apr. 02, 2011 International Information Products
Asset Impairment Charges
Impairment charge related to goodwill	$ 77,300,000
Goodwill
Goodwill at the beginning of the period	417,654,000	347,411,000	0	306,300,000	0	70,243,000	0	51,200,000	0
Purchase adjustments	1,000	1,000
Change in foreign currency translation adjustment	1,333,000	972,000				361,000
Goodwill at the end of the period	418,988,000	348,384,000	0	306,300,000	0	70,604,000	0	51,200,000	0
Passing margin component (as a percent)		20.00%
Goodwill Impairment Testing
Goodwill included in each component tested	$ 418,988,000	$ 348,384,000	$ 0	$ 306,300,000	$ 0	$ 70,604,000	$ 0	$ 51,200,000	$ 0
Number of reportable segments	2
Number of components tested for impairment	7