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Litigation and Environmental - Portland (Details) - Portland Harbor Superfund Site, Willamette River, Portland, Oregon
$ in Millions
12 Months Ended
Dec. 31, 2023
USD ($)
Terminals
Parties
Environmental Protection Agency | KMLT  
Site Contingency [Line Items]  
Estimated Remedy Implementation Period 10 years
Number of Parties Involved In Site Cleanup Allocation Negotiations | Parties 90
Number of Liquid Terminals | Terminals 2
Site Contingency, Loss Exposure Not Accrued, Best Estimate | $ $ 2,800
Environmental Protection Agency | KMBT  
Site Contingency [Line Items]  
Number of Liquid Terminals | Terminals 2
State And Federal Trustees | KMLT  
Site Contingency [Line Items]  
Loss Contingency, Damages Sought, Value | $ $ 5