Variable Interest Entities (Details) $ in Millions	Sep. 30, 2025 USD ($) plant subsidiary	Dec. 31, 2024 USD ($)
Assets
Cash and cash equivalents	$ 4,764	$ 4,657
Property, plant, and equipment, net	27,741	29,314
Deferred charges and other assets, net	7,370	7,092
Liabilities
Current liabilities, including current portion of debt and finance lease obligations	14,729	15,495
Debt and finance lease obligations, less current portion	9,687	9,720
Variable Interest Entity, Primary Beneficiary [Member]
Assets
Cash and cash equivalents	169	374
Other current assets	1,100	1,027
Property, plant, and equipment, net	4,376	4,517
Deferred charges and other assets, net	604	166
Liabilities
Current liabilities, including current portion of debt and finance lease obligations	352	383
Debt and finance lease obligations, less current portion	622	642
Diamond Green Diesel Holdings LLC (DGD) [Member]
Assets
Cash and cash equivalents	136	353
Other current assets	1,044	976
Property, plant, and equipment, net	3,690	3,806
Deferred charges and other assets, net	524	86
Liabilities
Current liabilities, including current portion of debt and finance lease obligations	299	304
Debt and finance lease obligations, less current portion	$ 622	642
Variable Interest Entity (Textual)
Number of renewable diesel plants owned by joint venture | plant	2
Central Mexico Terminals [Member]
Assets
Cash and cash equivalents	$ 1	0
Other current assets	18	9
Property, plant, and equipment, net	624	647
Deferred charges and other assets, net	68	69
Liabilities
Current liabilities, including current portion of debt and finance lease obligations	49	75
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	21
Other current assets	38	42
Property, plant, and equipment, net	62	64
Deferred charges and other assets, net	12	11
Liabilities
Current liabilities, including current portion of debt and finance lease obligations	4	4
Debt and finance lease obligations, less current portion	$ 0	$ 0