Document and Entity Information - shares	3 Months Ended
	Sep. 30, 2014	Nov. 03, 2014
Document and Entity Information [Abstract]
Entity Registrant Name	HENRY JACK & ASSOCIATES INC
Entity Central Index Key	0000779152
Current Fiscal Year End Date	--06-30
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q/A
Document Period End Date	Sep. 30, 2014
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Amendment Flag	true
Amendment Description	Explanatory Note Restatement of Consolidated Financial Statements On May 6, 2015, Jack Henry & Associates, Inc. (the "Company") announced that it had identified historical accounting errors relating to its accounting for certain software license and maintenance agreements. The Company has corrected these errors in the accompanying restated condensed consolidated financial statements (unaudited). See Note 11 - Restatement of Condensed Consolidated Financial Statements which is included in "Financial Statements" in Item 1 of this Amended Quarterly Report for the fiscal quarter ended 30 September, 2014 on Form 10-Q/A. Internal Control over Financial Reporting Management reevaluated its assessment of disclosure controls and procedures as of September 30, 2014. As a result of that reassessment, management concluded that disclosure controls and procedures were not effective due to a material weakness. For a description of the material weakness and actions taken and to be taken to remediate the material weakness, see "Part I - Item 4 - Controls and Procedures." This Amended Quarterly Report on Form 10-Q/A does not reflect events occurring after the Original Filing on November 5, 2014 or modify or update those disclosures affected by subsequent events, except for the effects of the restatement. Disclosures not affected by the restatement are unchanged and reflect the disclosures made at the time of Original Filing. The following items in the Original Filing have been amended: Part I, Item 1 Financial Statements Part I, Item 2 Management's Discussion and Analysis of Financial Condition and Results of Operations Part I, Item 4 Controls and Procedures Part II, Item 6 Exhibits The Company's Chief Executive Officer and Chief Financial Officer are providing currently dated certifications in connection with this Amended Quarterly Report on Form 10-Q/A; the certifications are filed as Exhibits 31.1, 31.2 and 32.1. The Company is concurrently filing an amended Annual Report on Form 10-K/A for the year ended June 30, 2014 and its Quarterly Reports on Form 10-Q for the fiscal quarters ended December 31, 2014 and March 31, 2015 to reflect the effects of the restatement therein.
Entity Common Stock, Shares Outstanding		81,775,635
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	No