Variable Interest Entities (Details) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Assets
Cash and cash equivalents	$ 4,537	$ 4,657
Property, plant, and equipment, net	28,236	29,314
Deferred charges and other assets, net	7,393	7,092
Liabilities
Current liabilities, including current portion of debt and finance lease obligations	14,677	15,495
Debt and finance lease obligations, less current portion	10,265	9,720
Variable Interest Entity, Primary Beneficiary [Member]
Assets
Cash and cash equivalents	188	374
Other current assets	1,048	1,027
Property, plant, and equipment, net	4,430	4,517
Deferred charges and other assets, net	380	166
Liabilities
Current liabilities, including current portion of debt and finance lease obligations	412	383
Debt and finance lease obligations, less current portion	628	642
Diamond Green Diesel Holdings LLC (DGD) [Member]
Assets
Cash and cash equivalents	164	353
Other current assets	987	976
Property, plant, and equipment, net	3,737	3,806
Deferred charges and other assets, net	301	86
Liabilities
Current liabilities, including current portion of debt and finance lease obligations	354	304
Debt and finance lease obligations, less current portion	628	642
Central Mexico Terminals [Member]
Assets
Cash and cash equivalents	0	0
Other current assets	18	9
Property, plant, and equipment, net	629	647
Deferred charges and other assets, net	69	69
Liabilities
Current liabilities, including current portion of debt and finance lease obligations	55	75
Debt and finance lease obligations, less current portion	0	0
Other VIEs [Member]
Assets
Cash and cash equivalents	24	21
Other current assets	43	42
Property, plant, and equipment, net	64	64
Deferred charges and other assets, net	10	11
Liabilities
Current liabilities, including current portion of debt and finance lease obligations	3	4
Debt and finance lease obligations, less current portion	$ 0	$ 0