Restructuring - Additional Information (Detail) - MAP to Growth - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Feb. 28, 2021	Feb. 29, 2020	Feb. 28, 2021	Feb. 29, 2020
Restructuring Cost And Reserve [Line Items]
Increase in current total expected costs			$ 0.8
Consumer Segment | Cost of Sales
Restructuring Cost And Reserve [Line Items]
Inventory-related charges	$ 0.9	$ 0.2	1.0	$ 7.4
PCG Segment | Cost of Sales
Restructuring Cost And Reserve [Line Items]
Inventory-related charges		0.1		3.2
CPG Segment | Cost of Sales
Restructuring Cost And Reserve [Line Items]
Inventory-related charges		0.1		0.3
SPG Segments | Cost of Sales
Restructuring Cost And Reserve [Line Items]
Inventory-related charges		$ 0.1		$ 0.1
Severance and Benefit Charges
Restructuring Cost And Reserve [Line Items]
Increase in current total expected costs			1.3
Facility Closure and Other Related Costs
Restructuring Cost And Reserve [Line Items]
Increase in current total expected costs			0.2
Other Restructuring Costs
Restructuring Cost And Reserve [Line Items]
Decrease in current total expected costs			$ 0.7