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Incentive Plans - Equity Incentive Plan Policy Valuation Assumptions (Details) - Equity Incentive Plans - Stock Option
12 Months Ended
Jun. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expected volatility 20.30%
Weighted-average volatility 20.30%
Expected dividend yield 3.40%
Expected term (in years) 7 years 4 months 24 days
Risk-free interest rate 1.40%