Goodwill and Intangible Assets - Narrative (Details) $ in Thousands	12 Months Ended
	Apr. 30, 2023 USD ($) unit	Apr. 30, 2022 USD ($)	Apr. 30, 2021 USD ($)
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 700,813	$ 695,897
Number of reporting units | unit	9
Tradenames	$ 84,400	84,400
Amortization expense	65,730	63,795	$ 57,645
Depreciation and amortization expense
Finite-Lived Intangible Assets [Line Items]
Amortization expense	65,700	$ 63,800	$ 57,600
Geographic divisions
Finite-Lived Intangible Assets [Line Items]
Goodwill	593,000
Other
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 107,800