Receivables (Schedule Of Activity In The Allowance For Doubtful Accounts) (Details) - USD ($) $ in Thousands	2 Months Ended	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2022	Apr. 30, 2021	Apr. 30, 2020
Allowance for Doubtful Accounts [Roll Forward]
Beginning balance	$ 83,508	$ 87,976	$ 82,480	$ 81,473
Provision	4,617	66,807	73,451	76,621
Charge-offs, recoveries and other	(149)	(77,516)	(72,423)	(75,614)
Ending balance	87,976	77,267	83,508	82,480
EAs
Allowance for Doubtful Accounts [Roll Forward]
Beginning balance	27,704	27,704	32,034	27,535
Provision	0	14,814	14,319	21,771
Charge-offs, recoveries and other	0	(16,377)	(18,649)	(17,272)
Ending balance	27,704	26,141	27,704	32,034
All Other
Allowance for Doubtful Accounts [Roll Forward]
Beginning balance	55,804	60,272	50,446	53,938
Provision	4,617	51,993	59,132	54,850
Charge-offs, recoveries and other	(149)	(61,139)	(53,774)	(58,342)
Ending balance	$ 60,272	$ 51,126	$ 55,804	$ 50,446