v3.26.3
Nature of Operations and Summary of Significant Accounting Policies (Details)
Sep. 30, 2026
client
Accounting Policies [Abstract]
Entity number of clients
7,200
X
- Definition
Entity number of customers
+ References
No definition available.
+ Details
Name:
jkhy_EntityNumberOfCustomers
Namespace Prefix:
jkhy_
Data Type:
xbrli:integerItemType
Balance Type:
na
Period Type:
instant
X
- References
No definition available.
+ Details
Name:
us-gaap_AccountingPoliciesAbstract
Namespace Prefix:
us-gaap_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration