v3.22.4
Commitments and Contingencies - Recycling Operations - Recycling Operations (Details)
$ in Thousands
1 Months Ended 3 Months Ended
Feb. 28, 2021
Apr. 30, 2020
USD ($)
Dec. 31, 2017
Potentially_responsible_party
Jan. 31, 2017
USD ($)
Nov. 30, 2022
USD ($)
Aug. 31, 2022
USD ($)
Aug. 31, 2021
USD ($)
Jan. 30, 2017
Party
Potentially_responsible_party
Aug. 31, 2007
USD ($)
Loss Contingencies [Line Items]                  
Accrual for Environmental Loss Contingencies         $ 65,985 $ 68,500      
Liabilities Established         920        
Insurance receivable           0 $ 10,000    
Other Noncurrent Assets                  
Loss Contingencies [Line Items]                  
Insurance receivable         27,000 28,000      
Portland Harbor Superfund Site                  
Loss Contingencies [Line Items]                  
Accrual for Environmental Loss Contingencies         6,000 6,000      
Number Of Other Potentially Responsible Parties Signing Settlement Agreement and Order on Consent | Potentially_responsible_party     3            
Number of Years for Pre-Remedial Design     2 years            
Site contingency expected completion term for remedial design   4 years              
Site contingency EPA estimated completion cost for remedial design   $ 4,000              
Insurance receivable         3,000 $ 3,000      
Number Of Potentially Responsible Parties Joining Allocation Process | Potentially_responsible_party               100  
Parties named in Litigation | Party               30  
Portland Harbor Superfund Site | Other Noncurrent Assets                  
Loss Contingencies [Line Items]                  
Insurance receivable         $ 2,300        
Portland Harbor Superfund Site | Minimum                  
Loss Contingencies [Line Items]                  
Percentage of area require active clean up in remedial design phase 100.00%                
Lower Willamette Group | Portland Harbor Superfund Site | Minimum                  
Loss Contingencies [Line Items]                  
Remedial Investigation and Feasibility Study Costs                 $ 155,000
Potential Responsible Parties | Portland Harbor Superfund Site                  
Loss Contingencies [Line Items]                  
Estimated Cost of Selected Remedy Undiscounted       $ 1,700,000          
Estimated Cost of Selected Remedy Discounted       $ 1,050,000          
Estimated Cost of Selected Remedy, Discount Rate       7.00%          
Site Contingency, Estimated Construction Time Frame       13 years          
Potential Responsible Parties | Portland Harbor Superfund Site | Minimum                  
Loss Contingencies [Line Items]                  
Estimated Cost of Selected Remedy, Range       50.00%          
Potential Responsible Parties | Portland Harbor Superfund Site | Maximum                  
Loss Contingencies [Line Items]                  
Estimated Cost of Selected Remedy, Range       (30.00%)