Variable Interest Entities (Details) $ in Millions	Mar. 31, 2026 USD ($) subsidiary plant	Dec. 31, 2025 USD ($)
Assets
Cash and cash equivalents	$ 5,733	$ 4,688
Property, plant, and equipment, net	27,113	27,617
Liabilities
Current liabilities, including current portion of debt and finance lease obligations	17,652	14,109
Debt and finance lease obligations, less current portion	10,465	9,670
Variable Interest Entity, Primary Beneficiary [Member]
Assets
Cash and cash equivalents	195	228
Other current assets	1,602	1,173
Property, plant, and equipment, net	4,268	4,323
Liabilities
Current liabilities, including current portion of debt and finance lease obligations	379	344
Debt and finance lease obligations, less current portion	609	616
Diamond Green Diesel Holdings LLC (DGD) [Member]
Assets
Cash and cash equivalents	162	196
Other current assets	1,496	1,106
Property, plant, and equipment, net	3,593	3,643
Liabilities
Current liabilities, including current portion of debt and finance lease obligations	341	297
Debt and finance lease obligations, less current portion	$ 609	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	20	18
Property, plant, and equipment, net	614	619
Liabilities
Current liabilities, including current portion of debt and finance lease obligations	36	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	$ 31	30
Other current assets	86	49
Property, plant, and equipment, net	61	61
Liabilities
Current liabilities, including current portion of debt and finance lease obligations	2	4
Debt and finance lease obligations, less current portion	$ 0	$ 0