Leases (Lease Costs) (Details) - USD ($) $ in Thousands	2 Months Ended	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2022	Apr. 30, 2021	Apr. 30, 2020
Leases [Abstract]
Operating lease costs	$ 36,853	$ 233,004	$ 239,357	$ 242,314
Variable lease costs	14,359	79,923	77,758	71,319
Subrental income	(52)	(520)	(650)	(1,277)
Total lease costs	51,160	312,407	316,465	312,356
Cash paid for operating lease costs	35,394	236,946	240,299	223,080
Operating lease right of use assets obtained in exchange for operating lease liabilities	$ 48,307	$ 222,352	$ 167,827	$ 345,079
Weighted-average remaining operating lease term (years)	2 years	2 years	3 years	3 years
Weighted-average operating lease discount rate	2.90%	2.80%	3.00%	3.30%