Stock-Based Compensation (Assumptions Used To Value Options) (Details) - Performance-Based Nonvested Share Units - $ / shares	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Apr. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected volatility, minimum	10.17%		23.19%
Expected volatility, maximum	157.11%		88.48%
Expected term, years	3 years	3 years	3 years
Risk-free interest rate, maximum	4.54%	3.43%
Weighted-average fair value (in dollars per share)	$ 44.06	$ 48.58	$ 27.07
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	0.00%	0.00%	0.00%