v3.22.4
Summary of Significant Accounting Policies - Additional Information (Details)
3 Months Ended 12 Months Ended
Nov. 07, 2022
USD ($)
Jointventureinterest
Nov. 30, 2022
USD ($)
Segment
Nov. 30, 2021
USD ($)
Aug. 31, 2022
USD ($)
Jointventureinterest
Aug. 31, 2021
USD ($)
Significant Accounting Policies [Line Items]          
Number of operating segments | Segment   1      
Number of reportable segments | Segment   1      
Bank Overdrafts   $ 52,000,000   $ 56,000,000  
Repayment of Advances with Scrap Metal   3,000,000 $ 3,000,000    
Insurance receivable       0 $ 10,000,000
Proceeds from legal settlements   7,000,000   $ 7,000,000  
Impairment in other loss, net   (4,000)      
Gain on Business Interruption Insurance Recovery, Statement of Income or Comprehensive Income [Extensible Enumeration]     Cost of Goods and Services Sold Cost of Goods and Services Sold  
Insurance recovery gain     $ 3,000,000 $ 15,000,000  
Increase in insurance receivable       25,000,000  
Received payment related to claims from various insurers       $ 30,000,000  
Number of Equity Method Investments | Jointventureinterest       2  
Proceeds from sale of equity method investments $ 2,000,000        
Gain (loss) from equity method investments   790,000 $ 236,000    
Gain (loss) recognized as a result of the sale $ 0        
Number of Joint Venture Investments | Jointventureinterest 1        
Insurance amount received       $ 25,000,000  
Impairment charges related to carrying value of plant and equipment assets lost in or damaged by fire       7,000,000  
Initial capital purchases and other costs of assets       $ 10,000,000  
Cash, FDIC Insured Amount   250,000      
Joint Venture Interests          
Significant Accounting Policies [Line Items]          
Equity Method Investment, Ownership Percentage 50.00%     50.00%  
Damage From Fire at Metals Recycling Facility in Everett, Massachusetts          
Significant Accounting Policies [Line Items]          
Insurance receivable   10,000,000   $ 10,000,000  
Received payment related to claims from various insurers       7,000,000  
Canadian Recycling          
Significant Accounting Policies [Line Items]          
Investment, Original Cost   5,000,000      
US Recycling          
Significant Accounting Policies [Line Items]          
Investment, Original Cost   6,000,000      
Cost of Goods Sold          
Significant Accounting Policies [Line Items]          
Gain on insurance receivable recognized       17,000,000 $ 10,000,000
Prepaid Expenses and Other Current Assets          
Significant Accounting Policies [Line Items]          
Prepaid expense   36,000,000   43,000,000  
Other Noncurrent Assets          
Significant Accounting Policies [Line Items]          
Insurance receivable   27,000,000   28,000,000  
Property loss and damage and business interruption claims environmental claims insurance receivable   10,000,000   10,000,000  
Environmental claims insurance receivable   6,000,000   7,000,000  
Third party claims insurance receivable   6,000,000   6,000,000  
Workers' Compensation insurance receivables   4,000,000   4,000,000  
Investments, Carrying Value   $ 7,000,000   11,000,000  
Other Accrued Liabilities          
Significant Accounting Policies [Line Items]          
Received payment related to claims from various insurers       $ 5,000,000