Document and Entity Information - USD ($)	12 Months Ended
	Jun. 30, 2014	Aug. 20, 2014	Dec. 31, 2013
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-K/A
Document Period End Date	Jun. 30, 2014
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
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 consolidated financial statements, as well as in the quarterly financial information (unaudited). See Note 15 - Restatement of Consolidated Financial Statements which is included in "Financial Statements and Supplementary Data" in Item 8 of this 2014 Amended Annual Report on Form 10-K/A. Internal Control over Financial Reporting Management reassessed its evaluation of the effectiveness of its internal control over financial reporting as of June 30, 2014 based on the framework established in Internal Control - Integrated Framework (1992) issued by the Committee of Sponsoring Organizations of the Treadway Commission ("COSO"). As a result of that reassessment, management confirmed the existence of a material weakness and, accordingly, has concluded that the Company did not maintain effective internal control over financial reporting as of June 30, 2014. For a description of the material weakness in internal control over financial reporting and actions taken and to be taken to remediate the material weakness, see "Part II - Item 9A - Controls and Procedures." This 2014 Amended Annual Report on Form 10-K/A does not reflect events occurring after the Original Filing on August 27, 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 1A Risk Factors Part II, Item 6 Selected Financial Data Part II, Item 7 Management's Discussion and Analysis of Financial Condition and Results of Operations Part II, Item 8. Financial Statements and Supplementary Data Part II, Item 9A. Controls and Procedures Part IV, Item 15. Exhibits and Financial Statement Schedules The Company's Chief Executive Officer and Chief Financial Officer are providing currently dated certifications in connection with this 2014 Amended Annual Report on Form 10-K/A; the certifications are filed as Exhibits 31.1, 31.2 and 32.1. The Company is concurrently filing an amended Quarterly Report on Form 10-Q/A for the fiscal quarter ended September 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		82,481,908
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	No
Entity Public Float			$ 4,998,746,579