EARNINGS PER SHARE AND STOCKHOLDERS' EQUITY (Details) (USD $)	1 Months Ended		3 Months Ended		6 Months Ended
	Sep. 30, 2011	Aug. 31, 2011	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Aug. 29, 2011 M
Basic earnings per share:
Net earnings			$ 12,977,000	$ 12,697,000	$ 22,992,000	$ 22,133,000
Denominator - weighted-average shares outstanding (in shares)			80,985,000	80,046,000	80,963,000	79,894,000
Basic earnings per share (in dollars per share)			$ 0.16	$ 0.16	$ 0.28	$ 0.28
Diluted earnings per share:
Net earnings			12,977,000	12,697,000	22,992,000	22,133,000
Denominator:
Weighted-average shares outstanding (in shares)			80,985,000	80,046,000	80,963,000	79,894,000
Dilutive effect of common stock options, warrants, and restricted stock as computed under the treasury stock method (in shares)			612,000	1,236,000	842,000	1,475,000
Denominator - diluted weighted-average shares outstanding (in shares)			81,597,000	81,282,000	81,805,000	81,369,000
Diluted earnings per share (in dollars per share)			$ 0.16	$ 0.16	$ 0.28	$ 0.27
Basic earnings per share attributable to Acxiom stockholders:
Numerator - net earnings			12,292,000	13,281,000	23,267,000	23,086,000
Denominator - weighted-average shares outstanding (in shares)			80,985,000	80,046,000	80,963,000	79,894,000
Basic earnings per share attributable to Acxiom stockholders (in dollars per share)			$ 0.15	$ 0.17	$ 0.29	$ 0.29
Diluted earnings per share attributable to Acxiom stockholders:
Numerator - net earnings			12,292,000	13,281,000	23,267,000	23,086,000
Denominator:
Weighted-average shares outstanding (in shares)			80,985,000	80,046,000	80,963,000	79,894,000
Dilutive effect of common stock options, warrants, and restricted stock as computed under the treasury stock method (in shares)			612,000	1,236,000	842,000	1,475,000
Denominator - diluted weighted-average shares outstanding (in shares)			81,597,000	81,282,000	81,805,000	81,369,000
Diluted earnings per share attributable to Acxiom stockholders (in dollars per share)			$ 0.15	$ 0.16	$ 0.28	$ 0.28
Stockholders' Equity
Outstanding options and warrants for the purchase of common stock (in shares)	10,400,000		10,400,000		10,400,000
Outstanding restricted stock units for purchase of common stock (in shares)	1,900,000		1,900,000		1,900,000
Number of shares outstanding under options, warrants and restricted stock units (in shares)			10,582,000	9,174,000	10,069,000	8,075,000
Range of exercise prices for options and warrants, low end of range (in dollars per share)			$ 11.50	$ 14.68	$ 13.14	$ 16.35
Range of exercise prices for options and warrants, high end of range (in dollars per share)			$ 62.06	$ 75.55	$ 62.06	$ 75.55
Stockholders' Equity
Period of common stock repurchase program (in months)							12
Maximum amount of common stock that may be repurchased		50,000,000
Shares repurchased (in shares)	3,700,000
Payment for repurchase of common stock	39,100,000				34,100,000
Cash paid for repurchases that differ from the aggregate purchase price	$ 34,100,000