Stock-Based Compensation (Summary Of Nonvested Shares) (Details) - $ / shares shares in Thousands	12 Months Ended
	Jun. 30, 2022	Apr. 30, 2021	Apr. 30, 2020
Restricted Share Units and Deferred Stock Units
Shares
Outstanding, beginning of the year (in shares)	2,012
Granted (in shares)	1,158
Released (in shares)	(897)
Forfeited (in shares)	(303)
Outstanding, end of the year (in shares)	1,970
Weighted-Average Grant Date  Fair Value
Outstanding, beginning of the year (in usd per share)	$ 21.84
Granted (in usd per share)	27.30
Released (in usd per share)	22.73
Forfeited (in usd per share)	22.33
Outstanding, end of the year (in usd per share)	$ 24.40
Performance-Based Nonvested Share Units
Weighted-Average Grant Date  Fair Value
Expected volatility, minimum	23.19%	21.14%	13.47%
Expected volatility, maximum	88.48%	84.49%	66.33%
Risk-free interest rate			1.70%
Risk-free interest rate, minimum		0.14%
Risk-free interest rate, maximum	0.37%	0.18%
Performance-Based Nonvested Share Units | Minimum
Weighted-Average Grant Date  Fair Value
Dividend yield	0.00%	0.00%	0.00%
Performance-Based Nonvested Share Units | Maximum
Weighted-Average Grant Date  Fair Value
Dividend yield		3.95%	3.55%
Nonvested Shares And Performance Nonvested
Shares
Outstanding, beginning of the year (in shares)	1,973
Granted (in shares)	576
Released (in shares)	(478)
Forfeited (in shares)	(153)
Outstanding, end of the year (in shares)	1,918
Weighted-Average Grant Date  Fair Value
Outstanding, beginning of the year (in usd per share)	$ 23.49
Granted (in usd per share)	27.94
Released (in usd per share)	24.55
Forfeited (in usd per share)	22.88
Outstanding, end of the year (in usd per share)	$ 23.79