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Restructuring and Other Expense, Net - Additional Information (Detail)
$ in Thousands
3 Months Ended 9 Months Ended
Feb. 28, 2021
USD ($)
Feb. 29, 2020
USD ($)
Feb. 28, 2021
USD ($)
Feb. 29, 2020
USD ($)
Jan. 29, 2021
Property
Restructuring Cost and Reserve [Line Items]          
Net (gain) loss on sale of assets     $ 34,554    
Restructuring and other expense (income), net $ 28,212 $ 1,376 37,656 $ 1,781  
Cryogenics          
Restructuring Cost and Reserve [Line Items]          
Net proceeds from sale of business     21,275    
Net (gain) loss on sale of assets     7,064    
Pressure Cylinders          
Restructuring Cost and Reserve [Line Items]          
Restructuring and other expense (income), net 28,435 $ 747 $ 36,006 $ 747  
Pressure Cylinders | Oil & gas equipment          
Restructuring Cost and Reserve [Line Items]          
Restructuring and other expense (income), net 27,671        
Number of real property | Property         3
Pressure Cylinders | Oil & gas equipment | Maximum          
Restructuring Cost and Reserve [Line Items]          
Sales proceeds upon the exit of the business by the acquirer, Percent         15.00%
Engineered Cabs          
Restructuring Cost and Reserve [Line Items]          
Gain from auction of certain assets $ 181