Revenue - Costs to Obtain a Contract (Details) - USD ($) $ in Millions	12 Months Ended
	Apr. 30, 2024	Apr. 30, 2023	Apr. 30, 2022
Disaggregation of Revenue [Line Items]
Costs to obtain and fulfill a contract, expense	$ 7.2	$ 5.9	$ 5.1
Prepaid Expenses and Other Current Assets
Disaggregation of Revenue [Line Items]
Costs to obtain and fulfill a contract	7.0	6.2
Other Assets
Disaggregation of Revenue [Line Items]
Costs to obtain and fulfill a contract	$ 11.0	$ 14.5