Summary of Significant Accounting Policies, Recently Issued and Recently Adopted Accounting Standards, Recently Adopted and Issued Accounting Standards (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2021	Apr. 30, 2020
ROU Assets and Lease Liabilities [Abstract]
Operating lease, liability	$ 168,272
Operating lease, right-of-use assets	121,430	$ 142,716
ASU 2016-02 [Member] | Minimum [Member]
ROU Assets and Lease Liabilities [Abstract]
Operating lease, liability	178,000
Operating lease, right-of-use assets	142,000
ASU 2016-13 [Member]
Change in Provision for Credit Losses [Roll Forward]
Balance, beginning of period	18,335
Current period provision	6,957
Amounts written off, less recoveries	(4,463)
Foreign exchange translation adjustments and other	(1,131)
Balance, end of period	21,474
ASU 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Change in Provision for Credit Losses [Roll Forward]
Balance, beginning of period	$ 1,776