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Commitments and Contingencies (Guarantees) (Details)
$ in Millions
Dec. 31, 2024
USD ($)
Financial Guarantee | Guarantee of Indebtedness of Others | LOOP and LOCAP LLC  
Loss Contingencies [Line Items]  
Maximum potential undiscounted payments $ 212
Financial Guarantee | Guarantee of Indebtedness of Others | Bakken Pipeline System  
Loss Contingencies [Line Items]  
Maximum potential undiscounted payments 78
Other Guarantees  
Loss Contingencies [Line Items]  
Maximum potential undiscounted payments $ 191
Indirect | Bakken Pipeline System  
Loss Contingencies [Line Items]  
Equity method investments, ownership percentage 9.19%