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Litigation and Environmental - Portland Harbor (Details) - Portland Harbor Superfund Site, Willamette River, Portland, Oregon $ in Millions	6 Months Ended
	Jun. 30, 2024 USD ($) Terminals Parties
Environmental Protection Agency | KMLT
Site Contingency [Line Items]
Number of Liquid Terminals | Terminals	2
Site Contingency, Loss Exposure Not Accrued, Best Estimate | $	$ 2,800
Site Contingency, Disbursement Period, Estimate, Unrecognized	10 years
Loss Contingency, Number of Defendants | Parties	90
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

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