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Restructuring - Additional Information (Detail) - USD ($)
$ in Millions
12 Months Ended
May 31, 2021
May 31, 2020
May 31, 2019
Restructuring Cost And Reserve [Line Items]      
Inventory-related charges $ 3.7 $ 39.6 $ 29.4
Consumer Segment      
Restructuring Cost And Reserve [Line Items]      
Inventory-related charges   28.8 10.5
CPG Segment      
Restructuring Cost And Reserve [Line Items]      
Inventory-related charges     1.0
PCG Segment      
Restructuring Cost And Reserve [Line Items]      
Inventory-related charges   3.2 9.0
MAP to Growth      
Restructuring Cost And Reserve [Line Items]      
Increase in current total expected costs 5.2    
MAP to Growth | Consumer Segment | Cost of Sales      
Restructuring Cost And Reserve [Line Items]      
Inventory-related charges 1.5 16.3 2.1
Inventory-related charges, favorable adjustment     0.2
MAP to Growth | CPG Segment | Cost of Sales      
Restructuring Cost And Reserve [Line Items]      
Inventory-related charges 0.1 0.7 1.0
MAP to Growth | PCG Segment | Cost of Sales      
Restructuring Cost And Reserve [Line Items]      
Inventory-related charges   3.2 $ 9.0
MAP to Growth | SPG Segments | Cost of Sales      
Restructuring Cost And Reserve [Line Items]      
Inventory-related charges   $ 0.1  
MAP to Growth | Severance and Benefit Costs      
Restructuring Cost And Reserve [Line Items]      
Increase in current total expected costs 2.6    
MAP to Growth | Facility Closure and Other Related Costs      
Restructuring Cost And Reserve [Line Items]      
Increase in current total expected costs $ 2.6