Business and Summary of Significant Accounting Policies | Recently Adopted Accounting Standards (Details) (Details) - USD ($) $ in Thousands	Jan. 31, 2020	Apr. 30, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating Lease, Right-of-Use Asset	$ 242,336	$ 206,800
Operating Lease, Liability	$ 241,413	$ 205,800