Variable Interest Entities (Details) $ in Millions	Sep. 30, 2026 USD ($) plant subsidiary	Dec. 31, 2025 USD ($)
Assets
Cash and cash equivalents	$ 9,840	$ 4,688
Property, plant, and equipment, net	26,926	27,617
Liabilities
Current liabilities, including current portion of debt and finance lease obligations	19,469	14,109
Debt and finance lease obligations, less current portion	10,012	9,670
Variable Interest Entity, Primary Beneficiary [Member]
Assets
Cash and cash equivalents	399	228
Other current assets	1,489	1,173
Property, plant, and equipment, net	4,152	4,323
Liabilities
Current liabilities, including current portion of debt and finance lease obligations	242	344
Debt and finance lease obligations, less current portion	596	616
Diamond Green Diesel Holdings LLC (DGD) [Member]
Assets
Cash and cash equivalents	365	196
Other current assets	1,338	1,106
Property, plant, and equipment, net	3,489	3,643
Liabilities
Current liabilities, including current portion of debt and finance lease obligations	215	297
Debt and finance lease obligations, less current portion	$ 596	616
Variable Interest Entity (Textual)
Number of plants owned by DGD joint venture | plant	2
Central Mexico Terminals [Member]
Assets
Cash and cash equivalents	$ 2	2
Other current assets	15	18
Property, plant, and equipment, net	605	619
Liabilities
Current liabilities, including current portion of debt and finance lease obligations	22	43
Debt and finance lease obligations, less current portion	$ 0	0
Variable Interest Entity (Textual)
Number of subsidiaries | subsidiary	3
Other VIEs [Member]
Assets
Cash and cash equivalents	$ 32	30
Other current assets	136	49
Property, plant, and equipment, net	58	61
Liabilities
Current liabilities, including current portion of debt and finance lease obligations	5	4
Debt and finance lease obligations, less current portion	$ 0	$ 0