Restructuring - Additional Information (Detail) - MAP to Growth - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Nov. 30, 2019	Nov. 30, 2020	Nov. 30, 2019
Restructuring Cost And Reserve [Line Items]
Decrease in current total expected costs		$ 3.4
Consumer Segment | Cost of Sales
Restructuring Cost And Reserve [Line Items]
Inventory-related charges	$ 6.3		$ 7.2
PCG Segment | Cost of Sales
Restructuring Cost And Reserve [Line Items]
Inventory-related charges	$ 1.0		3.1
CPG Segment | Cost of Sales
Restructuring Cost And Reserve [Line Items]
Inventory-related charges			$ 0.3
Severance and Benefit Charges
Restructuring Cost And Reserve [Line Items]
Decrease in current total expected costs		4.5
Facility Closure and Other Related Costs
Restructuring Cost And Reserve [Line Items]
Increase in current total expected costs		0.6
Other Restructuring Costs
Restructuring Cost And Reserve [Line Items]
Increase in current total expected costs		$ 0.5