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Commitments and Contingencies (Details) - USD ($)		3 Months Ended	6 Months Ended
Commitments and Contingencies (Details) - USD ($)	Mar. 23, 2026	Jun. 30, 2026	Jun. 30, 2026	Apr. 30, 2026
Loss Contingencies [Line Items]
Loss contingency, receivable, current		$ 78,000,000	$ 78,000,000
Insurance recoveries		0	0
Minimum [Member]
Loss Contingencies [Line Items]
Loss contingency, damages sought, value	$ 1,000,000
Favorable Regulatory Action [Member] \| DGD [Member]
Gain Contingencies [Line Items]
Refund claim				$ 51,000,000
Favorable Regulatory Action [Member] \| Diamond Green Diesel Holdings LLC (DGD) [Member]
Gain Contingencies [Line Items]
Receivable for recovery of import duties, gross				$ 51,000,000
Operating Segments [Member] \| Refining [Member]
Loss Contingencies [Line Items]
Cost of property repairs and maintenance		$ 15,000,000	$ 15,000,000