Fair Value Measurements - Narrative (Details) $ in Millions, $ in Millions	3 Months Ended
	Jul. 31, 2025 USD ($)	Jul. 31, 2024 USD ($)	Jul. 31, 2025 CAD ($)	Apr. 30, 2025 USD ($)	May 31, 2023 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of operating lease ROU assets	$ 1.1
Yvon
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration arrangement term	5 years		5 years
Current contingent consideration liability	$ 5.8
Noncurrent contingent consideration liability	22.7
Minimum | Yvon
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	0.0
Maximum | Yvon
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	33.5		$ 46.0
Interest rate swap agreements
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain on derivative instruments	0.2	$ 1.1
Expected earnings to be reclassified during next twelve months	0.3
Interest rate swap agreements | Prepaid expenses and other current assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities	0.3
Interest rate swap agreements | Other assets
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities	$ 1.1
Interest rate swap agreements | Term Loan Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional amount					$ 300.0
Capped interest rate (as a percent)					3.899%
Forward interest rate collar | Term Loan Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional amount				$ 300.0