Variable Interest Entities (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Assets
Cash and cash equivalents	$ 4,047	$ 2,583
Property, plant, and equipment, net	30,729	29,264
Liabilities
Current liabilities, including current portion of debt and finance lease obligations	8,122	13,160
Debt and finance lease obligations, less current portion	14,577	9,178
Variable Interest Entity, Primary Beneficiary [Member]
Assets
Cash and cash equivalents	238	110
Other current assets	289	689
Property, plant, and equipment, net	1,681	1,192
Liabilities
Current liabilities, including current portion of debt and finance lease obligations	683	483
Debt and finance lease obligations, less current portion	26	31
Diamond Green Diesel Holdings LLC (DGD) [Member]
Assets
Cash and cash equivalents	222	85
Other current assets	234	567
Property, plant, and equipment, net	1,032	706
Liabilities
Current liabilities, including current portion of debt and finance lease obligations	88	66
Debt and finance lease obligations, less current portion	0	0
Central Mexico Terminals [Member]
Assets
Cash and cash equivalents	0	0
Other current assets	31	33
Property, plant, and equipment, net	551	381
Liabilities
Current liabilities, including current portion of debt and finance lease obligations	588	409
Debt and finance lease obligations, less current portion	0	0
Other VIEs [Member]
Assets
Cash and cash equivalents	16	25
Other current assets	24	89
Property, plant, and equipment, net	98	105
Liabilities
Current liabilities, including current portion of debt and finance lease obligations	7	8
Debt and finance lease obligations, less current portion	$ 26	$ 31

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