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Stock Based Compensation (Tables) | 12 Months Ended
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Jun. 30, 2023
Share-Based Payment Arrangement [Abstract] |
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] | The following table summarizes non-vested restricted stock unit awards and performance unit awards as of June 30, 2023, as well as activity for the fiscal year then ended:
Unit awards | Shares |  | Weighted Average Grant Date Fair Value |  | Aggregate Intrinsic Value
Outstanding July 1, 2020 | 307 |  |  | $ | 136.41 |  |  |
Granted 1 | 113 |  |  | 170.69 |  |  |
Vested | (124) |  |  | 111.08 |  |  |
Forfeited 2 | (2) |  |  | 140.46 |  |  |
Outstanding July 1, 2021 | 294 |  |  | 160.22 |  |  |
Granted 1 | 135 |  |  | 178.60 |  |  |
Vested | (71) |  |  | 145.50 |  |  |
Forfeited 2 | (55) |  |  | 189.33 |  |  |
Outstanding July 1, 2022 | 303 |  |  | 166.50 |  |  |
Granted 1 | 136 |  |  | 214.78 |  |  |
Vested | (120) |  |  | 159.10 |  |  |
Forfeited 2 | (16) |  |  | 186.35 |  |  |
Outstanding June 30, 2023 | 303 |  |  | $190.08 |  | $50,765
1 Granted includes restricted stock unit awards and performance unit awards 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.
ScheduleOfShareBasedPaymentAwardRSUValuationAssumptionsTableTextBlock [Table Text Block] | The weighted average assumptions used in the Monte Carlo pricing model to estimate fair value at the grant dates for performance unit awards are as follows:
| Year Ended June 30,
Monte Carlo award inputs: | 2023 |  | 2022 |  | 2021
Compensation Peer Group:1 |  |  |  |  |
Volatility | 29.4 | % |  | 28.6 | % |  | 25.2 | %
Risk free interest rate | 2.96 | % |  | 0.32 | % |  | 0.11 | %
Annual dividend based on most recent quarterly dividend | $ | 1.96 |  |  | $ | 1.84 |  |  | $ | 1.72 |
Dividend yield | 0.9 | % |  | 1.1 | % |  | 1.0 | %
Beginning average percentile rank for TSR | 71 | % |  | 65 | % |  | 37 | %
S&P 1500 IT Index: |  |  |  |  |
Volatility |  |  |  |  | 25.2 | %
Risk free interest rate |  |  |  |  | 0.11 | %
Annual dividend based on most recent quarterly dividend |  |  |  |  | $ | 1.72 |
Dividend yield |  |  |  |  | 1.0 | %
Beginning average percentile rank for TSR |  |  |  |  | 30 | %
1 For fiscal 2023 and 2022, S&P 1500 S&S Index participants were included in the Compensation Peer Group.

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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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