Acquisitions and Equity Method Investments (Narrative) (Details) € in Millions, $ in Millions	3 Months Ended			9 Months Ended		12 Months Ended
	Jul. 31, 2023 USD ($)	Jul. 31, 2023 EUR (€)	Apr. 30, 2023 USD ($)	Apr. 30, 2024 USD ($)	Apr. 30, 2023 USD ($)	Dec. 31, 2023 EUR (€) employee
Business Acquisition
Acquisitions, net of cash acquired				$ 2.0	$ 62.3
Goodwill	$ 481.1			$ 475.3
Medica S.p.A
Business Acquisition
Number of employees (employee) | employee						700
Revenue | €						€ 80.0
Remaining equity interest (percentage)				51.00%
Medica S.p.A | Scenario, Plan
Business Acquisition
Equity method investment (percentage)				49.00%
Univercells Technologies
Business Acquisition
Acquisitions, net of cash acquired	147.2	€ 134.6
Goodwill	95.8
Intangible assets acquired	52.5
Deferred tax liabilities	13.1
Add deferred tax asset	7.0
Net working capital	(0.9)
Other noncurrent assets	6.6
Other noncurrent liabilities	$ 0.7
Isolere
Business Acquisition
Acquisitions, net of cash acquired			$ 62.4
Goodwill			28.2		28.2
Intangible assets acquired			44.5		44.5
Deferred tax liabilities			10.9		10.9
Net working capital			(0.4)		(0.4)
Other noncurrent assets			1.2		1.2
Other noncurrent liabilities			$ 0.2		$ 0.2