Employee Benefits - Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions (Details) - $ / shares	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Employee Benefits
Expected dividend yield	1.52%	2.06%	1.79%
Expected volatility	36.53%	34.89%	29.67%
Risk-free interest rate	4.55%	4.12%	3.79%
Weighted-average expected life (years)	10 years	10 years	10 years
Weighted-average fair value of options granted during the year	$ 27.06	$ 15.88	$ 16.68