XML 56 R45.htm IDEA: XBRL DOCUMENT v3.21.2

Stock Based Compensation RSU Measurement Date Assumptions (Details) - Compensation Peer Group [Member]	3 Months Ended
	Sep. 30, 2021 $ / 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: