Integration and Restructuring Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2020
2021 Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost	$ 28.5	$ 24.1
Total costs incurred to date	52.6
2021 Restructuring Program | Employee-related costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost	6.3	17.3
Total costs incurred to date	23.6
2021 Restructuring Program | Other transition and termination costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost	22.2	6.8
Total costs incurred to date	29.0
Ainsworth [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost	$ 0.0	$ 0.0	$ 16.5
Total costs incurred to date			48.6
Ainsworth [Member] | Employee-related costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost			2.4
Total costs incurred to date			17.9
Ainsworth [Member] | Other transition and termination costs
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, incurred cost			14.1
Total costs incurred to date			$ 30.7