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Pending Acquisition - Additional Information (Detail)
$ in Thousands, € in Millions, shares in Millions
3 Months Ended
Sep. 18, 2018
EUR (€)
shares
Oct. 31, 2018
USD ($)
Oct. 31, 2018
EUR (€)
Sep. 18, 2018
USD ($)
Business Acquisition [Line Items]        
Foreign currency forward contract liability   $ 42,555    
Erwin Hymer Group        
Business Acquisition [Line Items]        
Payments to acquire business | € € 1,700      
Business acquisition, equity consideration | shares 2.3      
Business acquisition, debt assumed | €     € 440  
Foreign currency forward contract liability   42,555 € 1,625  
Other expenses   $ 14,534    
Erwin Hymer Group | Term Loan [Member]        
Business Acquisition [Line Items]        
Credit facility term 7 years      
Amount of debt financing       $ 2,300,000
Asset Based Credit Facility [Member] | Erwin Hymer Group        
Business Acquisition [Line Items]        
Credit facility term 5 years      
Amount of debt financing       $ 750,000
Line of credit facility, unused capacity commitment fee percentage 0.25%      
Line of credit, fixed charge coverage ratio 100.00%      
Asset Based Credit Facility [Member] | Erwin Hymer Group | LIBOR rate | Us Tranche        
Business Acquisition [Line Items]        
Interest rate   3.75% 3.75%  
Asset Based Credit Facility [Member] | Erwin Hymer Group | EURIBOR rate | Euro Tranche        
Business Acquisition [Line Items]        
Interest rate   4.00% 4.00%  
Asset Based Credit Facility [Member] | Erwin Hymer Group | Minimum | LIBOR rate        
Business Acquisition [Line Items]        
Line of credit facility, interest rate       1.25%
Asset Based Credit Facility [Member] | Erwin Hymer Group | Maximum | LIBOR rate        
Business Acquisition [Line Items]        
Line of credit facility, interest rate       1.75%
Asset Based Credit Facility [Member] | Erwin Hymer Group | Term Loan [Member]        
Business Acquisition [Line Items]        
Line of credit facility, minimum principal payment percentage   1.00%    
Line of credit facility, installment payment percentage   0.25%    
Line of credit, frequency of installment payments   Quarterly