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Income Taxes - Additional information (Detail) - USD ($)
$ in Millions
 12 Months Ended
Jul. 04, 2025
Aug. 31, 2025
Aug. 31, 2024
Aug. 31, 2023
Aug. 31, 2019
Aug. 31, 2018
Aug. 31, 2017
Operating Loss Carryforwards [Line Items]              
Income tax and earnings from unconsolidated affiliates,Domestic u.s. operations   $ 255.3 $ 111.4 $ 32.2      
Income tax and earnings from unconsolidated affiliates,Foreign operations   $ 29.1 $ 112.3 $ 58.8      
Statutory federal corporate tax rate   21.00% 21.00% 21.00% 21.00% 25.70% 35.00%
Carryback of 2021 loss   $ 22.9          
Percentage of provisions for bonus depreciation on assets 100.00%            
Deferred tax assets, valuation allowance   13.9 $ 15.9        
Net increase (decrease) in the valuation allowance   (2.0)          
Accrued interest related to uncertain tax provisions   1.2 0.8        
Increase (reduction) in interest expense relating to reserves for uncertain tax provisions   0.4 $ 0.2 $ 0.5      
Settlement with Taxing Authority              
Operating Loss Carryforwards [Line Items]              
Decrease in unrecognized tax benefits within next twelve months   1.3          
Federal              
Operating Loss Carryforwards [Line Items]              
Credit carryforwards   16.3          
Net operating loss carryforwards that do not expire   5.6          
State              
Operating Loss Carryforwards [Line Items]              
Operating loss carryforwards   $ 108.5          
Credit carryforwards expiration year   2031          
Net operating loss carryforwards that do not expire   $ 40.2          
Foreign              
Operating Loss Carryforwards [Line Items]              
Operating loss carryforwards   $ 16.1          
Operating loss carryforwards expiration year   2027          
Net operating loss carryforwards that do not expire   $ 27.8