Goodwill and Intangible Assets - Narrative (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Jan. 31, 2025 USD ($)	Apr. 30, 2025 USD ($) unit	Apr. 30, 2024 USD ($)	Apr. 30, 2023 USD ($)
Finite-Lived Intangible Assets [Line Items]
Goodwill		$ 881,334	$ 853,767
Impairment of goodwill		$ 42,454	0	$ 0
Number of reporting units | unit		10
Tradenames		$ 84,400	84,400
Ames Reporting Unit
Finite-Lived Intangible Assets [Line Items]
Goodwill		65,300
Impairment of goodwill	$ 42,500
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Amortization		54,000
Other
Finite-Lived Intangible Assets [Line Items]
Amortization		300
Depreciation and amortization expense
Finite-Lived Intangible Assets [Line Items]
Amortization		81,100	64,200	$ 65,700
Operating Segments
Finite-Lived Intangible Assets [Line Items]
Goodwill		816,000	746,000
Segment Reporting, Reconciling Item, Excluding Corporate Nonsegment
Finite-Lived Intangible Assets [Line Items]
Goodwill		$ 65,300	$ 107,800