XML 37 R26.htm IDEA: XBRL DOCUMENT
v3.25.3

Stock Based Compensation (Tables) | 3 Months Ended
--- | ---
Sep. 30, 2025
Share-Based Payment Arrangement [Abstract] |
Schedule of Nonvested Share Activity | The following table summarizes non-vested restricted stock unit awards and performance unit awards as of September 30, 2025:
Unit awards |  | Units |  | Weighted Average Grant Date Fair Value Per Unit |  | Aggregate Intrinsic Value
Outstanding July 1, 2025 |  | 348 |  |  | $ | 183.88 |  |  |
Granted 1 |  | 152 |  |  | 168.59 |  |  |
Vested |  | (105) |  |  | 190.99 |  |  |
Forfeited 2 |  | (32) |  |  | 230.09 |  |  |
Outstanding September 30, 2025 |  | 363 |  |  | $ | 171.46 |  |  | $ | 54,084 |
1 Granted includes restricted stock unit awards and performance unit awards with market conditions at 100% achievement. 2 Forfeited includes restricted stock unit awards and performance unit awards forfeited for service requirements not met and performance unit awards not settled due to underachievement of performance measures.
Schedule Of Share Based Payment Award PSU Valuation Assumptions [Table Text Block] | The Monte Carlo inputs used in the model to estimate fair value at the measurement date and resulting values for these performance unit awards are as follows:
Monte Carlo award inputs: | Fiscal 2026 |  |  |  |
Compensation Peer Group: |  |  |  |  |
Volatility | 23.6 | % |  |  |  |
Risk free interest rate | 3.66 | % |  |  |  |
Annual dividend based on most recent quarterly dividend | $2.32 |  |  |  |
Dividend yield | 1.36 | % |  |  |  |
Beginning average percentile rank for TSR | 20.0 | % |  |  |  |

X
- Definition us-gaap_ScheduleOfShareBasedPaymentAwardRSUValuationAssumptionsTableTextBlock [Table Text Block] + References No definition available. + Details
Name: | jkhy_ScheduleOfShareBasedPaymentAwardRSUValuationAssumptionsTableTextBlockTableTextBlock
Namespace Prefix: | jkhy_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the changes in outstanding nonvested shares. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ScheduleOfNonvestedShareActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration