XML 55 R45.htm IDEA: XBRL DOCUMENT
v3.22.1

Stock Based Compensation RSU Measurement Date Assumptions (Details) - Compensation Peer Group [Member] | 9 Months Ended
--- | ---
Mar. 31, 2022 $ / shares Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |
Volatility | 28.55%
Risk free interest rate | 0.32%
Estimated annual dividend | $ / shares | $ 1.84
Beginning total shareholder return | 65.00%

X
- Definition Beginning total shareholder return + References No definition available. + Details
Name: | jkhy_BeginningTotalShareholderReturn
Namespace Prefix: | jkhy_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Annual dividend based on most recent quarterly dividend + References No definition available. + Details
Name: | jkhy_EstimatedAnnualDividend
Namespace Prefix: | jkhy_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iv) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Rate of weighted-average expected volatility for award under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ValuationTechniqueAxis=jkhy_CompensationPeerGroupMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |