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Variable Interest Entities (Details) - USD ($) $ in Millions		9 Months Ended
	Apr. 19, 2021	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Assets
Cash and cash equivalents		$ 3,498		$ 3,313
Property, plant, and equipment, net		30,440		30,389
Liabilities
Current liabilities, including current portion of debt and finance lease obligations		14,313		9,283
Debt and finance lease obligations, less current portion		13,071		13,954
Variable Interest Entity (Textual)
Proceeds from sale of membership interest in unconsolidated joint venture		270	$ 0
Gain on sale of partial interest in MVP Terminalling, LLC (MVP)		62	$ 0
MVP Terminalling, LLC (MVP) [Member]
Variable Interest Entity (Textual)
Percent membership interest in unconsolidated joint venture sold (percent)	24.99%
Proceeds from sale of membership interest in unconsolidated joint venture	$ 270
Gain on sale of partial interest in MVP Terminalling, LLC (MVP)	$ 62
Membership percentage in VIE (percent)	25.01%
Variable Interest Entity, Primary Beneficiary [Member]
Assets
Cash and cash equivalents		176		161
Other current assets		223		251
Property, plant, and equipment, net		2,879		1,918
Liabilities
Current liabilities, including current portion of debt and finance lease obligations		1,033		718
Debt and finance lease obligations, less current portion		50		26
Diamond Green Diesel Holdings LLC (DGD) [Member]
Assets
Cash and cash equivalents		159		144
Other current assets		191		219
Property, plant, and equipment, net		2,110		1,232
Liabilities
Current liabilities, including current portion of debt and finance lease obligations		320		90
Debt and finance lease obligations, less current portion		28		1
Central Mexico Terminals [Member]
Assets
Cash and cash equivalents		0		1
Other current assets		10		24
Property, plant, and equipment, net		676		590
Liabilities
Current liabilities, including current portion of debt and finance lease obligations		700		620
Debt and finance lease obligations, less current portion		0		0
Other VIEs [Member]
Assets
Cash and cash equivalents		17		16
Other current assets		22		8
Property, plant, and equipment, net		93		96
Liabilities
Current liabilities, including current portion of debt and finance lease obligations		13		8
Debt and finance lease obligations, less current portion		$ 22		$ 25